EMT Exam 1 Flashcards
Physical traits of good EMT
- Ability to lift and carry equipment and patients
- Good eyesight
- Good communication skills
Personal traits of good EMT
- Pleasant
- Sincere
- Cooperative
- Resourceful
- Self Starter
- Emotionally Stable
- Leader
- Neat and Clean
Medical Director
A physician that has ultimate responsibility for patient care aspects of EMS system
- All patient care performed under their direction
- Oversees training
- Develops treatment protocols
Examples of off-line medical control
Standing orders, protocols
Examples of on-line medical control
Orders by phone or radio
Pnea
Breath, respiration
Arthr
Joint
Dys
Difficulty
Febrile
Fever
De
Away from
A
Not
Iac
Has
Itis
Inflammatory
Intra
Between
Endo
Within
Infra
Below
Hemato
Pertaining to blood
Nas(o)
Nose
Tachy
Fast
Thorax
Chest cavity
+LOC
Positive loss of consciousness
Extra
Outside
GSW
Gunshot wound
“Fell out”
Lost consciousness
MVC
Motor vehicle collision
Emesis
Vomit
Superior vs Inferior
Top vs Bottom
Mid-axillary
Runs along armpit line
S/P
Status Post
Anatomy
Study of body structure
Physiology
Study of body function
Supine
Lying horizontal with face and torso up
Prone
Face down
Recovery Position
AKA left lateral recumbent position; side (allows things like vomit to drain out of mouth)
Fowler/Semi Fowler
Upright
Three main functions of musculoskeletal system
- Gives the body shape
- Protects internal organs
- Provides for body movement
How many vertebrae do humans start off with in the spinal column vs have in adulthood
33, 24 in adulthood
What is the spinal column essential for
Movement, sensation, and vital functions
What does the thorax contain
Contains the heart, lungs, and major blood vessels
What does the thorax protect
Protects the heart, lungs, and major blood vessels
Parts of the spinal column
Cervical (1-7), Thoracic (1-12), Lumbar (1-5)
Joints
Formed when bones connect to other bones
Types of muscles
Voluntary (skeletal), involuntary (smooth), cardiac
Which two areas does the pharynx include
Oropharynx and the nasopharynx
Larynx
Voice box containing the vocal cords; cricord cartilage forms the lower portion
Is inhalation an active or passive process?
Active
Is exhalation an active or passive process
Passive
Process of inhalation
Diaphragm and intercostal muscles contract, diaphragm moves downward, ribs move upward and outward; negative pressure pulls air into lungs
Process of exhalation
Diaphragm and intercostal muscles relax; positive pressure pushes air out of lungs
How does the process of ventilation occur in lungs?
The alveoli allows for CO2/O2 to exchange
Respiration
Exchange of gases between cells and bloodstream or alveoli and blood
Pathway of blood through heart
Right atrium –> right ventricle –> left atrium –> left ventricle
What is blood made of
Plasma, RBCs, WBCs, platelets
What makes up more than half the volume of blood
Plasma
What do platelets help with
Clotting
Pulse
Pressure wave of blood flowing down an artery when the left ventricle contracts; can be felt by compressing artery over a bone
Blood Pressure
Force blood exerts against the walls of blood vessels
Systolic
Upper blood pressure reading; arterial pressure when left ventricle contracts
Diastolic
Lower blood pressure reading; pressure when left ventricle refills
Perfusion
Adequate circulation of blood and exchange of oxygen and waste products
Hypoperfusion
Shock; when flow becomes inadequate
Functions of lymphatic system
- Captures fluid
- Maintains balance of fluid
Parts of central nervous system
Brain and spinal cord
Parts of peripheral nervous system
Sensory nerves and motor nerves
Parts of autonomic nervous system
Involuntary motor functions
What does the digestive system provide
It provides the mechanism by which food travels through the body and is digested
Functions of the integumentary system
- Protection
- Water balance
- Temp regulation
- Excretion
- Shock impact
Layers of the skin
Epidermis, dermis, subcutaneous layer
Function of endocrine system
Produces hormones that regulate many body activities and functions
What do adrenal glands secrete
Epinephrine
Function of renal system
Helps the body regulate fluid levels, filter chemicals, and adjust body pH
Bladder
Fluid reservoir for urine
Ureters
Transports urine to bladder from kidneys
Urethra
Excretes urine from the bladder to external environment
Pathophysiology
Study of how disease processes affect function of body
Cell membrane
Protects; allows water/other substances in and out of cell
Mitochondria
Converts glucose and other nutrients into ATP; fuel for other cell functions
Glucose
Building block for energy; supply of insulin must match body’s glucose requirement
Aerobic metabolism
Cellular functions using oxygen
Anaerobic metablism
Cellular functions not using oxygen; creates less energy and more waste; body becomes acidic, impairing many body functions
How does disease affect the membrane and therefore the body?
Many diseases alter membrane permeability; allows substances into cell that shouldn’t be there which can interfere with regulation of water
Homeostasis
Regulated in the brain; maintained through nervous system feedback and messaging
Parasympathetic nervous system
- “Feed or breed” functions
- Neurotransmitters regulate digestion and reproduction
- Reduces heart rate and blood pressure
Sympathetic nervous system
- “Fight or flight” response
- Epinephrine and norepinephrine
- Enhances body’s ability to protect itself
- Increase heart rate and blood pressure
Cardiopulmonary system
Respiratory and cardiovascular systems work together to bring oxygen into body, distribute it to cells, and remove waste products; breakdown means system failure
Airway/bronchial tree
Each mainstem bronchus enters a lunch and branches into smaller bronchi, ending with smallest bronchioles
What are the alveoli (airs acs) connected to
Bronchioles
Airways
Must have open (patent) airway for system to function
Tidal volume
Volume of air moving in and out during each breath cycle
Minute volume
Amount of air moved in and our of lungs in one minute
Minute volume equation
Tidal volume * respiratory rate = minute volume
What happens when something interferes with minute volume
Respiratory dysfunction
What part of the brain controls respirations
The medulla oblongata
What can affect minute volume
- Any event impacting function of medulla oblongata such as infection, drugs, toxins, trauma
- Disruption of pressure through thorax being compromised (through punctures, rib fractures); ability to inhale/exhale is impacted and minute volume is reduced
- Air/blood accumulating in chest (pleural space) also compromises respiration
- Disruption of lungs tissue through alveoli being compromised; can result in hypoxia and hypercapnia
Hypoxia
Low oxygen levels
Hypercapnia
High carbon dioxide levels
Respiratory Compensation
-Body attempts to compensate for gas exchange deficits which chemoreceptors detect; body stimulates respiratory system to increase rate/tidal volume
Plasma oncotic pressure
Proteins in plasma attract water away from around cells and pulls it into bloodstream
Hydrostatic pressure
Water pushed out of blood vessels towards cells
True of false: problems with proteins concerning plasma oncotic pressure and hydrostatic pressure can cause an imbalance
True
True or false: without enough blood, oxygen and carbon dioxide can’t be properly moved around
True
What controls pressure in blood vessels
Blood vessels need adequate pressure to make cycle work; pressure controlled by changing diameter of blood vessel
What is blood vessel pressure monitored by
Stretch receptors; pressure can be increased/decreased depending on situation
What causes blood vessel dysfunction
- Loss of tone which affects ability to constrict and dilate
- Pressure drops
- Trauma, infection, allergic reaction
- Excessive permeability; capillaries leak; caused by severe infection, high altitude, disease
- Hypertension caused by abnormal constriction of vessels
- Loss of regulation caused by blockage of chemical signals; can cause shock
Stroke volume
Volume of blood pumped out by left ventricle during each cardiac contraction; usually about 70mL per contraction
Stroke volume is based on
- Preload (amount of blood returning to heart)
- Contractility (how hard heart squeezes)
- Afterload (pressure the heart has to pump against to force blood into system)
Cardiac output equation
Stroke volume * bpm = cardiac output
Pediatric compensation
Fast heart rate indicates compensation
What causes heart dysfunction
- Mechanical problems (physical trauma, squeezing forces, cell death (MI))
- Electrical problems (can’t regulate rate)
What must there be a balance of for cardiopulmonary system to work
Balance between ventilation and perfusion
Hypoperfusion
AKA shock; breakdown in system; can result in death
What are the 4 categories of shock
Hypovolemic, distributive, cardiogenic, obstructive
Hypovolemic Shock
One category of shock; caused by low blood volume
Distributive shock
One category of shock; caused by low blood vessel tone
Cardiogenic shock
One category of shock; caused by failure of heart to pump
Obstructive shock
One category of shock; caused by blood not being able to flow
Signs of compensated shock
- Slight mental status change
- Increased heart rate
- Increased respiratory rate
- Delayed capillary refill time
- Pale, cool, clammy skin
- Sweating
When does decompensated shock occur
When compensatory measures fail; characterized by decreased blood pressure and altered mental status
When does irreversible shock occur
When inadequately perfused organ systems begin to die; death commonly follows
Body fluid precentages
- Body is 60% water
- Intracellular: 70%
- Intravascular: 5%
- Interstitial: 25%
What regulates thirst and elimination of excess fluid
Brain and kidneys
What pulls fluid into the bloodstream
Blood plasma proteins
Disruptions of fluid balance
- Fluid loss/dehydration (decrease in total water volume)
- Poor fluid distribution (water doesn’t go where its supposed to eg. edema)
What are the skull and spine covered by
Several protective layers (meninges) and a layer of shock absorbing fluid (cerebrospinal fluid)
What are the brain and spinal cord protected by
The skull and spine
What causes nervous system dysfunction
- Trauma (mvc, falls)
- Medical dysfunction (strokes, infection, low blood sugar)
What is the purpose of the endocrine system
Glands secrete hormones; hormones sends chemical messages to the body
What causes endocrine system dysfunction
- Organ or gland problems
- Present at birth or result of illness
- Too man hormones (graves disease)
- Problems with heart rate and temp regulation
- Not enough hormones (diabetes)
What is the purpose of the digestive system
Allows food, water, and other nutrients to enter the body
What causes digestive dysfunction
- Gastrointestinal bleeding
- Vomiting and diarrhea may occur
- Impacts hydration levels and nutrient transfer
What is the purpose of the immune system
Responsible for fighting infections; responds to specific invaders by identifying them, marking them, destroying them
Hypersensitivity
AKA allergic reaction; result of exaggerated immune response; results in rapid drop in blood pressure
Why are vital signs important
Outward signs of what goes on in body; can identify conditions/trends in patients
What is reported with pulse
Rate, quality, regularity, equality
Normal findings for pulse
- 60-100 bpm
- Strong (not thready/bounding)
- Regular
- Equality: central and peripheral equal
Tachycardia
Pulse that is too fast
Bradycardia
Pulse that is too slow
Central vs peripheral pulses
- Central: Carotid and femoral
- Peripheral: Radial and brachial
What is reported with respirations?
Rate, rhythm, and quality
Normal findings with respiratory rate
- Around 12-20 breath per minute, above 24 or below 8 are potentially serious findings
- Normal and non-labored
- Regular intervals
Best places to assess skin color
- Nail beds
- Inside of cheek
- Inside of lower eyelids
Normal findings for skin color
Pink
Abnormal findings for skin color
- Pale
- Cyanotic
- Flushed
- Jaundiced
- Mottled/blotchy
How to check skin temperature
Feel back of patient’s hand
Normal findings with skin temperature
Warm and dry
When do you evaluate capillary refill
With patients 6 years old and younger
How to check capillary refill
Press on nail bed and observe how long it takes normal pink color to return
Normal vs abnormal findings for capillary refill
Normal is less than 2 seconds, longer is abnormal
What to assess with pupils
Size, equality, and reactivity
How to check pupils
Cover eye, shine light, repeat with other eye
Normal findings with pupil
- Midpoint
- Pupils are equal size
- Reactive to light
Normal findings for blood pressure
Systolic no greater than 120 mmHg; diastolic no greater than 80 mmHg
What is the palpation method and when is it used
In noisy environment when you are unable to auscultate a blood pressure; you only receive the systolic blood pressure
Possible locations to check temperature
- Temporal (forehead)
- Rectal
- Oral
- Tympanic (ear)
- Axilla (armpit)
Normal findings for temperature
98.6 F or 37 C; above 100.4 F is considered fever
Oxygen saturation (SpO2)
Ratio of amount of oxygen present in the blood to amount that could be carried; measured using pulse oximeter
Normal findings for oxygen saturation
94%-100%
Blood glucose level
Measures quantity of glucose in the bloodstream; measured by glucometer
Normal findings for blood glucose level vs abnormal
Normal: 60-140 mg/dL; anything above or below is abnormal
True of false: Permission from medical direction or by local protocol is required to perform blood glucose monitoring
True
Capnography
Measures amount of carbon dioxide exhaled; indirectly indicates how well tissues are using oxygen and performing other functions
Normal levels for capnography
35 to 45 mmHg
What to do before beginning a lift
- Estimate patients weight and then add weight of equipment
- Know your limitations
- Plan and communicate with partner
Rules for lifting
- Position feet properly
- Use legs
- Never twist or turn
- Do not compensate when lifting with one hand
Power grip
- Use as much hand surface as possible
- Hands ten inches apart
Rules for reaching
- Keep back in locked-in position
- Avoid twisting while reaching
- Avoid reaching more than 15-20 inches in front of body
- Avoid prolonged reaching when strenuous effort required
Stretcher rules
- Always have two providers holding stretcher
- Don’t move around at load height
- The person in the front steers
- Person in rear pushes
Moving patients with suspected spinal injury
- Keep spine in straight line
- Immobilize head, neck, and spine before move
Emergency move
One of the three types of moves; should only be used when absolutely necessary; try to move patient in line with long axis of the spine
Three situations that may require the use of an emergency move
- Hazardous scene
- Care of life-threatening conditions that require repositioning
- The necessity to reach other patients
Urgent move
One of the three types of moves; required treatment can only be performed if patient is moved; patients condition rapidly deteriorating; performed with precautions for spinal injury
Urgent move: onto long spine board
Used if immediate threat to life and suspicion of spine injury; place spine board next to body and log-roll patient onto stretcher
Non-urgent move
Patient is stable; no immediate life threat; patient can be treated and moved in normal way; take all required precautions not to aggravate existing conditions
Dead space air
Air moved in ventilation not reaching alveoli
Alveolar ventilation
Air actually reaching alveoli
Ventilation
Both inhaling and exhaling
Diffusion
Movement of gases from high to low concentration
External respiration
Diffusion of oxygen and carbon dioxide between alveoli and circulating blood; aka alveolar respiration
Internal (cellular) respiration
Exchange of gases between blood and cells
Oxygen from blood diffuses into
The cell
Carbon dioxide diffuses from the cell into
The blood
Types of ventilation/respiratory problems
- Mechanics of breathing disrupted
- Gas exchange interrupted
- Circulation problems
When evaluating respiration, what are the signs of compensation for hypoxia or hypercapnea
- Shortness of breath
- Increased respiratory rate and depth
- Increased heart rate
What are the three stages that the body goes through when respiratory compensation is needed
- Respiratory distress
- Respiratory failure
- Respiratory arrest
Respiratory distress
First stage of respiratory compensation; body compensating for a respiratory challenge and meeting metabolic needs
Signs of respiratory distress
- Relatively normal mental status
- Relatively normal oxygen saturation and end tidal carbon dioxide
- Relatively normal skin color
- Shortness of breath
- Increased respiratory rate and heart rate
- Accessory muscle use and position changes
Respiratory failure
AKA inadequate breathing; second stage of respiratory compensation; occurs when compensatory steps can no longer continue
Signs of respiratory failure
- Signs of respiratory distress with evidence that compensation is no long effective; signs of decompensation include:
- No/poor air movement
- Diminished breath sounds
- Breathing rate irregular
- Patient can’t speak
- Unusual noises
Respiratory arrest
Third stage of respiratory compensation; breathing completely stops
When to intervene during respiratory failure
When breathing is inadequate
Positive Pressure Ventilation (PPV)
One type of respiratory intervention; forcing air into lungs when a patient has stopped breathing/inadequate breathing; uses force which is opposite of how body usually draws air into lungs
Negative side effects of PPV
- Decreasing cardiac output/dropping BP
- Gastric distention
- Hyperventilation
Mouth to mask ventilation
One type of PPV; performed using a pocket face mask
Bag-Valve Mask (BVM)
One type of PPV; handheld ventilation device
Types of respiratory failure/arrest intervention tools
PPV through mouth to mask ventilation, bag-valve mask, Flow restricted oxygen powered ventilation device, or ATV
Two rescuer BVM ventilation
Recommended by AHA because its hard to obtain adequate mask seal while squeezing bag at the same time
Key concerns with PPV
- Don’t ventilate vomiting patient; can force into lungs
- Watch chest rise and fall with each ventilation
- Ensure rate of ventilation is sufficient
What to do when there is no chest rise during BVM ventilation
- Reposition head
- Check for escape or air around mask/reposition fingers
- Check for airway obstruction in body/BVM
- Use another method
Ventilating a breathing patient
After explaining, seal mask on patient’s face and squeeze bag with patient’s inhalation
Ventilation of a stoma breather
- Clear mucus or secretions, leave head and neck in neutral position
- Use pediatric mask to seal around stoma
- If it doesn’t work, seal stoma and attempt ventilation through mouth and nose
Flow restricted oxygen powered ventilation device
- One type of PPV
- Aka manually triggered ventilation device
- Adults only
- Follow same procedures for mask seal as for BVM, trigger device until chest rises, repeat every 5 seconds
Automatic transport ventilator
- Provides automated ventilations
- Can adjust ventilation rate and volume for patient’s size and condition
What prevent of air is oxygen
21%
In what cases can patients benefit from a higher percentage of inhaled oxygen
- Respiratory/cardiac arrest
- Shock
- Respiratory distress and lung diseases
- Head injuries
Nonrebreather mask use, concentrations, and flow rate
- A type of oxygen delivery device
-The best way to deliver high concentration of oxygen to a breathing patient - Provides oxygen concentration of 80%-100%
- Minimum flow of 8lpm, normal flow rate of 12-15lpm
Nasal Cannula use, concentrations, and flow rate
- A type of oxygen delivery device
- Best choice for patient who refuses to wear an oxygen face mask or for titration
- Provides oxygen concentrations of 24%-44%
- Should no provide flow rate higher than 2-6lpm
Partial rebreather mask use, concentrations, flow rate
- A type of oxygen delivery device
- Very similar to nonrebreather mask except no one-way valve opening to reservoir mask
- Delivers 40%-60% oxygen
- 9-10lpm
Venturi Mask
- A type of oxygen delivery device
- Delivers specific concentrations of oxygen by mixing oxygen with inhaled air
- Some have set percentage/flow rate, others have adjustable venturi port
Tracheostomy Mask
- A type of oxygen delivery device
- Placed over stoma or tracheostomy tube to provide supplemental oxygen
What type of advanced airway device requires direct visualization
Endotracheal Intubation (ET)
Humidifier use and purpose
- Connected to flowmeter
- Provides moisture to dry oxygen from supply cylinder
- Important for long term oxygen user because of dry mucus membranes
Advanced airway devices that are inserted blindly
- iGel
- King
- LMA
Where does the upper airway begin
It begins at the mouth and nose; air is warmed and humidified in nasal turbinates
Where does the upper airway end
The glottic opening
Three parts of the pharynx in (in order)
Oropharynx, nasopharynx, and laryngopharynx
Where does the lower airway begin
The glottic opening
Where does the lower airway end
Alveoli which is surrounded by pulmonary capillaries
What can cause airway obstruction
- Foreign objects (food, toys)
- Liquids (blood, vomit)
- Swelling from infection, allergy, etc
- Poor muscle tone caused by altered mental status
Bronchoconstriction
Disorder of lower airway where the smooth muscle constricts internal diameter of airway and affects the ability to move air
What two questions are asked when assessing airway
- Is airway open?
- Will airway stay open?
How to check if airway is open with conscious vs unconscious person
Conscious: Look for signs of open airway like being alert, talking, crying
Unconscious: Look, listen, feel
Signs of inadequate airway
- Foreign bodies in airway
- No air felt or heard
- Absent/minimal chest movements
- Abnormal breathing sounds
How to open patients airway?
- Head-tilt, chin-lift maneuver
- Jaw thrust maneuver
How to achieve neutral pediatric airway position
Pad behind patients shoulders (lying flat may cause hyperflexion of neck and airway occlusion
General way to manage airway
- Make it: Open airway with either maneuver
- Check it: Check for signs of obstruction
- Keep it: If needed, use airway adjuncts
Airway Adjuncts
Airway adjuncts provide longer term air channel as opposed to maneuvers; the two types are Oropharyngeal airway and nasopharyngeal airway
Oropharyngeal Airway (OPA)
- Type of airway adjunct used to KEEP airway
- Device used to move tongue forward as it curves back to pharynx
How to size OPA
Size from the corner of the patient’s mouth to the tip of the earlobe
Nasopharyngeal Airway (NPA)
- Type of airway adjunct used to KEEP airway
- Flexible tube inserted through nostril and into hypopharynx
- Moves tongue ad soft tissue forward to provide air channel
- Can be used in patients with intact gag reflex or clenched jaw
How to size an NPA
Size from the patient’s nostril to the tip of the earlobe/angle of the jaw
Rules for using airway adjuncts
- Use OPA only on patients without gag reflexes
- Open patient’s airway manually (with maneuvers) before using adjunct
- Don’t continue inserting if patient gags
- Don’t push patient’s tongue into pharynx
Why do you suction a patient’s airway and what do you suction
- Suction obvious liquids (blood, secretions, vomit)
- These liquids can cause aspiration in lungs
Rigid pharyngeal suction tip
- Aka hard cath
- Larger bore than flexible catheters
- Suction only as far as you see, don’t lose sight of distal end
Flexible suction catheter
- Designed to be used when rigid tip can’t be used
- Not usually large enough to suction vomit or thick secretions
- Can be passed through a tube (like endotracheal tube)
- Can be used to suction nasopharynx
Suctioning Rules
- Suction no longer than 10 seconds at a time unless patient is vomiting for longer than 10 seconds
- In event of thick secretions, consider using rigid suction tube
- Suction on the way out, moving catheter side to side
What can prolonged suctioning cause
Hypoxia and bradycardia
What are some manual techniques that can remove objects from the airway
- Abdominal thrusts, chest thrusts, finger sweeps
Should you/when should you remove dental appliances during airway procedures
Leave dental appliances in place when possible during airway procedures (gives mouth structure); prepare to remove if it endangers the airway
Parts of scene size up
- BSI (Body substance isolation)
- Scene safety
- Nature of illness (NOI)/mechanism of injury (MOI)
- Number of patients
- Additional resources
- C-spine consideration
Scene safety consideration
(1) Keep yourself safe
(2) Keep your partner/rescuers safe
(3) Keep bystanders safe
(4) Keep patient safe
Scene safety consideration upon approaching scene
- Look for other emergency units
- Look for signs of collision related power outage
- Observe traffic
- Look for smoke
Scene safety consideration when within sight of scene
- Look for hazardous materials
- Look for victims
- Look for smoke not seen at distance
- Look for broken utility poles and downed wires
- Look for other emergency personnel
Scene safety considerations as you reach the scene
- Follow instructions of incident commander
- Don appropriate PPE
Staging
- Parking away from scene until it is secure
- Certain calls call you to advise to stage, but can always make that decision for yourself
Mechanism of injury (MOI)
- Apart of nature of the call
- Forces that caused the injury
- Can help predict patterns/injury
What is considered a severe call in adults vs children
Adults: More than 20 feet
Child: More than 10 feet (or 2-3 times child’s height)
What are the important factor of a severe fall
- Height from which patient fell
- Surface patient fell onto
- Part of patient that hit the ground
- Anything that interrupted the fall
Low-velocity (knife) injuries
- Type of penetrating trauma
- Damage limited to area penetrated but there may be multiple wounds
Medium and high velocity (handgun/shotgun) injury
- Type of penetrating trauma
- Damage from a bullet itself and damage from cavitation
Blunt-force trauma
- Injury caused by a blow that strikes body but doesn’t penetrate skin or other body tissues
- Signs are often subtle and easily overlooked
- Maintain index of suspicion based on mechanism of injury
Nature of illness (NOI)
- Apart of nature of call
- Reason the person calls EMS
- Essentially evaluates the chief complaint
- More commonly used for med calls
Nature of the call
Determining why EMS has been called; determined by MOI and NOI
What are additional resources/in which situations would we need them
- More than one ambulance
- Fire
- Technical rescue
- Hazardous materials response
- Bariatric patient
What to consider for number of patients
- How many patients present
- Are there sufficient resources on hand to care for all patients
C-Spine consideration
Based on the info obtained so far in scene size-up, start to consider if there MAY be a need for cervical spine precautions at the scene
Primary Assessment Steps
- General impression
- C-spine decision
- Assessing mental status (aka LOC) (AVPU)
- Assessing airway (Abc)
- Assessing breathing (aBc)
- Assessing circulation (abC)
- Determining patient priority/transport decision
How to determine order of ABC
- Apart of primary assessment
- Depends on initial impression of patient
- ABC if patient has signs of life
- CAB if patient appears lifeless, no pulse
General impression
- Part of primary assessment
- Assesses environment, chief complain, and appearance
- Helps determine severity and set priorities for care and transport
- Look, listen, smell
C-Spine decision
- Apart of primary assessment
- Decision should be formed once you get general impression
- If any possibility of c-spine injury, get provider to hold manual c-spine
Findings that indicate a critical patient during general impression
- Altered mental status
- Anxiety
- Pale, sweaty skin
- Obvious trauma to head, chest abdomen, pelvis,
- Specific positions indicating distress
Level of consciousness/metal status
- Apart of primary assessment
- Mental status is assessed by using AVPU (alert, verbal, painful, unresponsive)
A of AVPU
- Apart of assessing LOC during primary assessment; stands for alert
- The patient is alert if they are awake, answering questions
- Determine orientation by asking questions like person, place, time, event
- A patient who is alert and completely oriented is documented as CAOx4
V of AVPU
- Apart of assessing LOC during primary assessment; stands for verbal
- Patient is only responsive to verbal stimuli and may appear appear lethargic
P of AVPU
- Apart of assessing LOC during primary assessment; stands for painful
- Patient is responsive to tactile stimuli; they may withdraw of localize pain
U of AVPU
- Apart of assessing LOC during primary assessment; stands for unconscious
- If the patient does respond to any of the previous AVPU stimuli, they are unresponsive
A of ABC
- ABC is part of primary assessment; A stands for airway
- If airway isn’t open or is endangered, take measures to open it (make it, check it, keep it)
B of ABC
- ABC is part of primary assessment; B stands for breathing
- Situations that call for breathing assistance are:
(1) Respiratory arrest
(2) Not alert, inadequate breathing
(3) Some alertness, inadequate breathing
(4) Adequate breathing but signs suggest respiratory distress and hypoxia
C of ABC
- ABC is part of primary assessment; C stands for circulation
- Assess pulse
- Assess skin: Normal circulation would have warm, pink, dry skin; shock would have pale, clammy skin
- Assess bleeding: Check for signs of major bleeding; do gross blood sweep
- Consider shock; If patient is in shock: Shock position, keep patient warm, deliver oxygen
Determining patient priority
- Apart of primary assessment; determine stability
- Stable: No threats to ABCs found and gen impression not concerning
- Potentially stable: Potential for deterioration can indicate potentially being unstable
- Unstable: Threat to ABCs
Priority transport
- Apart of primary assessment
- Initiate priority transport if a life-threatening problem can’t be controlled or threatens to recur
- Continue assessment and care en-route
How is history of patient obtained
- By talking to patient
- If patient is unable to respond, gather history from: Family, bystsanders, meds, other thing observed at scene
History-taking techniques
- Develop rapport with patient
- Ask open-ended questions unless immediate answer is needed
History of the present illness (HPI)
Info gathered regarding the symptoms and nature of the patient’s current concern; obtained using OPQRST(-AS/PN)
Past medical history
Info gathered regarding the patient’s health problems in the past; obtained using SAMPLE(R)
OPQRST(-AS/PN)
- Used for history of present illness
- Onset
- Provocation
- Quality
- Region; Radiation
- Severity
- Time
- Associated Signs
- Pertinent Negatives
SAMPLE(R)
- Used for past medical history
- Signs and symptoms
- Allergies
- Meds
- Pertinent past history
- Last oral intake (incase of surgery)
- Events leading up to injury/illness
When is a physical exam performed
Before, during, or after patient history
What are the three primary techniques for performing a physical examination
- Observe: Look at patient for an overall sense of patient condition
- Auscultate: Listen for sounds of an abnormal condition
- Palpate: Feel an area for deformities or other abnormal findings
Respiratory system history and physical exam
History:
- Obtain history of existing resp conditions and meds
- Determine if meds have been taken as prescribed
- Determine if signs and symptoms of this episode match previous episodes
Physical Exam:
- Mental status
- Level of respiratory distress
- Chest wall motion
- Auscultate lung sounds
- Use pulse ox
- Observe edema
- Fever
Cardiovascular system history and physical exam
History:
- Existing cardiac conditions and meds
- Signs and symptoms of episodes
- Description of chest pain using OPQRST
- Determine specific characteristics of discomfort
Physical exam:
- Look for signs condition may be severe
- Obtain pulse, bp, pulse pressure
- Look for jugular vein distention (JVD)
- Palpate chest
- Observe posture and breathing
Nervous system history and physical exam
History:
- Determine patient’s mental status
- Determine patient’s normal state of mental functioning
- Obtain history of neurologic conditions
- Note patient’s speech
Physical exam:
- Perform stroke scale
- Check peripheral sensation and movement
- Gently palpate spine
- Check extremity strength
- Check patients pupils
- Examine patients gait
Endocrine system history and physical examination
History:
- Diabetes mellitus or thyroid disease history
- Current meds, being taken properly
- Has patient eaten or exerted unusual level of energy
- Whether patient is sick
- Whether patient has taken blood glucose or uses insulin pump
Physical exam:
- Evaluate patient’s mental status
- Observe the patient’s skin
- Obtain blood glucose level
- Look for insulin pump and medical jewelry
Gastrointestinal system history and physical exam
History:
- Pain/discomfort
- Oral intake
- History of GI issues
- Vomiting
- Bowel movements
Physical exam:
- Observe patient’s position
- Assess the abdomen and other GI parts
- Inspect vomit or feces
Immune system history and physical exam
History:
- History of allergies, reactions
- History of asthma
- Tightness in chest or throat
- GI distress, itchiness, or rash
- Meds for allergic reaction
Physical examination:
- Inspect point of contact with allergen
- Inspect skin for rashes/hives
- Inspect for swelling
- Listen to patient speak
- Listen to lungs; ensure adequate breathing
Musculoskeletal system history and physical exam
History:
- Prior injuries
- Whether patient takes blood-thinning meds
- Underlying conditions that makes fractures more common
- History to determine if med problem caused traumatic injury
Physical Exam:
- Inspect for signs of injury, like deformity
- Palpate areas of suspected injury; compare sides for symmetry
- Be alert for crepitation
- Assess patient head-to-toe if multiple injuries or unresponsive
EMS approach to diagnosis
- Must be efficient
- Work in uncontrolled environment
- Limited tools and skillset
- Narrow educational focus
- Considers most serious conditions associated with patient and rules them in or out to create diagnoses
Heuristics
Aka shortcuts; based on pattern recognition and narrowing possibilities to reach diagnoses more quickly
Common heuristics biases
- Representativeness
- Availability
- Overconfidence
- Confirmation bias
- Illusory correlation
- Anchoring and adjustment
- Search satisfying
When to do rapid trauma exam vs focused exam for trauma pathway of secondary assessment
Rapid trauma exam:
- Un-responsive or AMS
- Significant MOI
- Multiple injuries
- Multiple body system involved
Focused exam:
- No significant MOI
- Responsive/Alert and oriented
- Single injury
When to do rapid medical exam vs focused exam for medical pathway of secondary assessment
Rapid medical exam:
- Un-responsive or AMS
- Unknown issues
Focused exam:
- No significant distress
- Responsive/ alert and oriented
What to do for secondary assessment if faced with trauma patient that has significant MOI and AMS
- C-spine
- Perform rapid trauma assessment (DCAP/P-BTLS)
- SAMPLE (bystanders)
- Baseline vitals in route
- Care based on findings
What to do for secondary assessment if faced with trauma patient with no significant MOI and CAO
- Baseline vitals
- SAMPLE hx
- OPQRST
- Additional hx
- Preform physical exam
- Care based on findings
What to do for secondary assessment for a medical patient who’s responsive
- Establish C/C
- SAMPLE hx
- OPQRST hx
- Additional hx
- Perform a focused medical assessment
- Baseline vitals
- Care based on findings
What to do for secondary assessment for a medical patient who’s unresponsive
- Rapid medical assessment
- Baseline vitals
- Position patient to protect airway
- SAMPLE hx
- Consult medical command as needed
- Care based on findings
How to do rapid physical exam
- Similar to physical exam for trauma patient
- Assess head, neck, chest, abdomen, pelvis, extremities, and posterior
- Consider ALS backup
What are important physical findings when doing a rapid physical exam
- Neck: JVD, med ID devices
- Chest: Breath sounds
- Abdomen: Distention, firmness/rigidity
- Pelvis: Incontinence
- Extremities: Pulse, motor function, sensation, ox saturation, med ID devices
Focused physical exam
- Usually brief
- Examines areas of concern based on chief complaint
- For secondary assessment for patients with no significant MOI and who are oriented
DCAP-BTLS
- Used for rapid trauma physical exam for secondary assessment of trauma patient with significant MOI and AMS
- Deformities
- Confusions
- Abrasions
- Punctures/Penetrations
- Burns
- Tenderness
- Lacerations
- Swelling
General principles for rapid trauma physical exam
- In all areas look for DCAP-BTLS
- Assume spinal injury
- Stop/alter assessment in process to provide care
How to do rapid physical exam for each part of body
- Head: Check head, face, neck
- Chest: Start at clavicle, sternum, apply c-collar (assume c-spine injury), complete sternum, check high and wet, check for paradoxical motion, crepitation
- Pelvis: Compression, flexion
- Genitals: As needed, check for priapism
- Extremities: DCAP-BTLS each extremity; when reaching distal portion of each extremity, check circulation, sensation, and motor function (CSM)
Three techniques for focused physical exam
Inspection: Look for abnormalities in symmetry, color, shape, movement
Auscultation: Listen for decreased or absent breath sounds
Palpation: Feel for abnormalities in shape, temp, texture, sensation
How to position infants head for airway
Keep head in neutral position
Detailed physical exam
- Usually done on way to hospital
- Gather additional info
- Complements primary and secondary assessments
- After all critical interventions completed
- Primary assessment re-evaluated again before initiated
What does reassessment Identify
- Changes
- Trends (deterioration, improvement)
- Guides priorities
What to repeat during reassessment
- Primary assessment
- Vital signs
- Repeat physical exams to identify any changes
- Check interventions (airways, bleeding interventions, etc)
How often do we reassess
- Every 15 minutes for stable patient (Q15)
- Every 5 minutes for potentially unstable patient (Q5)
- If there may have been a change in patient’s condition, repeat at least primary assessment
How to maintain well being as an EMT
- Maintain personal relationships
- Exercise
- Sleep
- Eat well
- Limit alcohol and caffeine
- Have regular check ups and vaccines
What are standard precautions
- Equipment and procedures that protect against blood and body fluids
When do you wear a gown
If patient has arterial bleeding, is in childbirth, or has multiple injuries; can also wear gown to protect self from fluids
Types of masks and when to wear them
- Surgical-type mask: Wear when there will be blood or fluid splatter
- N-95/high-efficiency particulate air respirator: Wear in cases when tuberculosis is expected
- Face shields: Offers entire face protection
What provides info on what PPE/BSI precautions to take
Scene size-up and protocols; when in doubt, wear it
How often should you wash your hands
After every patient encounter
Hepatitis B and C
- Disease of concern
- Infection that causes inflammation of the liver
- Can live in dried blood for several days
- Hep B has vaccine and hep C doesn’t; both are deadly
Tuberculosis
- Disease of concern
- Often infects lungs
- Highly contagious and spread through airs
- Consider precautions with any patient having a productive cough
HIV/AIDS
- HIV attacks immune system leaving patient unable to fight off infection
- AIDS is the set of conditions that results when immune system has been attacked by HIV
- Contact with blood is usual route of infection
- Lower risk for health care workers than hep or TB
Ryan White CARE Act
Allows EMS providers to find out if exposure to infectious disease has occurred, the agency’s infection control officer gathers facts about exposure and notifies EMS provider; agency refers EMS provider to health care professional
True or false: immunizations for hep B and other infectious diseases should be available through agency
True
Stages of stress
- 1st Alarm reaction: Fight/flight
- 2nd Resistance: Coping
- 3rd: Exhaustion: Loss of ability to resist or adapt to the stressor
Types of stress reactions
- Acute stress reaction
- Delayed stress reaction
- Cumulative stress reaction
Acute stress reaction
- One of the three stress reactions
- Often linked to catastrophe
- Signs and symptoms develop quickly
- Normal reactions to extraordinary situation
- May require intervention from mental health professional
Cumulative Stress Reaction
- One of the three types of stress reactions
- Early signs include vague anxiety, emotional exhaustion
- Progresses to physical complaints/loss of emotional control
- May present as severe withdrawal/suicidal thoughts
Delayed stress reaction
- PTSD
- Signs and symptoms not evident until long after incident
- Delay makes dealing with reaction harder
- Requires intervention
Critical incident stress management (CISM)
A system that includes education and resources to both prevent and deal with stress appropriately
What is patient consent; what are the types
- Permission from patient to assess, treat, and transport
- Expressed consent: must be informed
- Implied consent: assumed consent
Consent for children
Minors are not permitted to provide consent for treatment without permission from parent or guardian; possible exceptions
What are the exceptions for children needing a parent or guardian to consent for treatment
- In loco parentis (teacher or other adult gives permission if parent is not available)
- Emancipated minors
- Life-threatening illness or injury
Consent for mentally incompetent adults
State and local laws permit transport of such patients under implied consent
When do you involuntarily transport someone
- When a patient is considered a threat to themselves or others
- Usually requires a decision by a mental health professional or a cop; needs court order
What happens if a patient refuses care/transport
- They must be legally able to consent and mentally competent
- The EMT must inform them of risks
- They must sign a release form
- EMT may still be held liable
What to do if in doubt about refusal
- Discuss the decision with the patient and listen to why they refuse care
- Ensure the patient understands risks
- Consult medical direction
- Ask to contact family member
- Contact law enforcement
Things to consider during patient refusal
- Have witness to refusal
- Inform patient that if they change their mind, they can call back
- If possible, have a friend/relative remain with the patient
- Document refusal
Advance directives
Legal document expressing patient’s wishes if patient is unable to speak for self
Types of advance directives
- DNR
- Living will: Legal document where person specifies what actions can be done to save their life
- Health care proxy: Document in which a person appoints someone else to legally make healthcare decisions on behalf of them if they can’t
- Power of attorney: Legally gives you power of health care proxy
Scope of practice vs standard of care
Scope of practice is what you can do as your position; standard of care is how you should do it
What is duty to act, how does it relate to an EMT
Duty to act is the obligation to provide care; while on duty, an EMT is obligated to provide care if there is no threat to safety
Negligence
Something was not done, or was done incorrectly; a negligent EMT may be required to pay damages
What does someone need to prove to show that an EMT was being negligent
- EMT had duty to act
- Breach of duty (EMT failed to act or provide standard of care)
- Proximate causation: Patient suffered harm because of EMT action/inaction
Res ipsa loquitur
The thing speaks for itself; legal concept that is used to argue that the occurrence of an accident implies negligence
Abandonment
Once care if initiated, it may not be discontinued until the patient is transferred to a medical personnel of equal or greater training; if not it may count as abandonment
Good samaritan laws
- Grants immunity from liability if a person acts in good faith within their level of training
- Rarely applies to on-duty personnel
- Doesn’t protect people from gross negligence or violations of the law
Confidentiality (HIPAA)
Information on patient’s history, condition, and treatment if considered confidential and may only be shared with other health care personnel as part of patient care; otherwise this information must be obtained via subpoena
Organ donor
- Person with completed legal document allowing donation of organs and tissues in event of death
- Must be identified by family, donor card, or driver’s license
- The hospital or medical direction should be advised
Safe haven laws
- Allows a person to drop an infant/child to any fire, police, or EMS station
- Protects children who may be abandoned or harmed
Crime scenes
Location where crime was committed OR anywhere evidence may be found; EMT’s priority is patient care but you should know what evidence is and take steps to preserve it
Mandatory reporting
Mandatory reporters must report witnessed or suspected:
- Abuse
- Sexual assault
- Stab/gunshot would
- Animal attacks
Ethics
Morals or standards governing actions that aren’t always required by law
What type of communication systems does EMS use
- Radios
- One-way pagers
- Cell phones
- Traditional telephones
What do EMS radio stations consist of
- Base station
- Mobile radios
- Portable radios
- Repeaters
FCC roles in radio communication
- FCC regulates EMS radio communication
- Assigns and licenses designated radio frequencies
- Prevents interference
- Prohibits profanity
True or false: if two units transmit simultaneously, only one will be heard
True; dispatch will confirm transmission of what they heard by repeating it back
What is a hospital notification and what are its components
It is the report given to the destination hospital so it can prepare for arrival; only important details:
- Unit ID/level of provider
- ETA
- Patient age/sex
- C/C
- Brief history of present illness/injury
- Major past illness
- Mental status
- Baseline vitals
- Pertinent physical exam findings
- Emergency care given and response to care
- Medical direction if required
Medical command consult
On line medical direction from physician; possible reasons why it is needed could be medication administration, destination assistance, or patient refusal
What to do when requesting medical command consult
- Give patient info clearly
- Repeat orders from physician back word for word
- Ask physician to repeat if order unclear
- If order seems inappropriate, question physician
Verbal/bedside report
Given upon arrival at destination, introduce patient by name and give complete and detailed report
Elements of detailed verbal/bedside report
- C/C
- History of present illness/injury
- Assessment findings, including pertinent negatives
- Treatment given and response
- Complete vital signs
Prehospital care report (PCR)
Written documentation of everything that happened during the call; can be handwritten or electronic
Functions of PCR
- Assessment and treatment
- Conveys picture of scene
- Entered into patient’s medical record
- It is a legal document and can be subpoenaed and used against you
- Administrative (insurance info)
- Used in research
- Quality improvement
What is included in PCR
- Run data
- Agency info
- Use official time given by dispatch
- Patient info/demographics
- Info gathered during call (history, general impression, etc)
- Narrative summary of call
- Transport info
What is narrative summary and what is included in it
- It is apart of PCR
- Includes objective info and subjective info (often reported by patient), c/c, pertinent negatives
- Approved abbreviations, legible, appropriate med terminology
- If it happened, record
Documentation issues
- Confidentiality: Covered by HIPAA
- Refusals: High liability
- Falsification: Covering up errors, recording something you forgot
How do you fix and error in documentation or add something you forgot
Add it at the end; don’t cover up error
What counts as special situation reports
- Multiple casualty incidents (logistical problem, many patients, care and evaluation by several providers)
- Provider exposures/injuries
- Hazardous/unsafe scenes
- Referrals to social service agencies
- Reports of abuse