Emergency Med Flashcards
Beck’s Triad
Distended jugular veins
Hypotension
Muffled heart sound
the pump that drives the system
preload
myocardial contractility
afterload
myocardial contractility
Presents with classic sign of inadequate perfusion
Class 1 Hemorrhage
Class 2 Hemorrhage
Class 3 Hemorrhage
Class 4 Hemorrhage
Class 3 Hemorrhage
Presents with classic sign of inadequate perfusion:
. Marked tachycardia and tachypnea
. Significant changes in mental status
. Measurable fall in systolic blood pressure
Nonsurgical removal of the limb from the body
Abrasions Punctures Incisions Avulsions Lacerations Amputations
Amputations
Alpha-granules liberate
platelet-derived growth factor (PDGF), platelet factor IV, and transforming growth factor (TGF)–β).
Pt is breathing with 29 breaths/min. What is next step?
measure perfusion (less than 30/min)
Massive burns (>85% BSA)
Disaster Response Level Level I Level II Level III Level IV
Level I
Disposition: depends on patient condition vs. resources
Triage Level Level 1 Level 2 Level 3 Level 4 Level 5
Level 2
Initial patient assessment and treatment in START should take how long?
less than 30 seconds/pt
What type of wounds rquire flaps?
radiation
Dx for Flail Chest
paradoxical movement of chest segment
Vitamin A deficiency role in wound healing is
collagen synthesis, antioxidant
Patients who are on steroids should receive this for wound healing
vitamin A
Triage mnemonic for triage Respiration, Perfusion and Mental Status?
R 30
P 2
M Can do
management of contaminated or infected wounds
Primary Closure
Spontaneous Healing
Delayed Primary Closure
Spontaneous Healing
How is perfusion measured in children?
palpable pulse
Uncomplicated hemorrhage for which crystalloid fluid resuscitation is required
Class 1 Hemorrhage
Class 2 Hemorrhage
Class 3 Hemorrhage
Class 4 Hemorrhage
Class 2 Hemorrhage
Victims seen 12-24 hrs
Disaster Response Level Level I Level II Level III Level IV
Level III
Types of wound healing
Primary Wound Healing or Primary Closure
Secondary Wound Healing or Spontaneous Healing
Tertiary Wound Healing or Delayed Primary Closure
What local anesthetic has the longest duration?
bupivacaine
Blood transfusion is required
Class 1 Hemorrhage
Class 2 Hemorrhage
Class 3 Hemorrhage
Class 4 Hemorrhage
Class 4 Hemorrhage
What are local anesthetic drugs used?
cocaine, procaine, tetracaine, lidocaine, lidocain with epi, bupivacaine
Second step in managing shock is to
identify the probable cause of shock and adjust treatment accordingly
Indications for systemic antibiotic for traumatic wounds
.Injury 6 hours old on the extremities .Injury 24 hours old on the face and scalp . Tendon, joint or bony involvement . Cartilage involvement . Mammalian bite . Co-morbidity (DM, extremes of age, steroid use, morbid obesity) . Puncture wound . Complex intraoral wound
BASICS OF PRIMARY SURVEY
Airway and Protection of Spinal Cord Breathing and Ventilation Circulation Disability Exposure and Control of the Environment
Diabetes affects wound healing by
Diminishing sensation and arterial inflow (plus plus) acute loss of diabetic control (arrow) diminished cardiac output, poor peripheral perfusion, and impaired polymorphonuclear leukocyte phagocytosis
Gradually disappearing contusion is how may days old?
. 14-15 days
In Disaster Response, what classifies as a massive burn?
> 85% BSA
Victim needs to be seen < 2 hr
Disaster Response Level Level I Level II Level III Level IV
Level I
hyperbaric medicine Raises the dissolved oxygen saturation in plasma from X to Y
0.3% to nearly 7%
Most important thing to know in disaster as Doctor
where the triage officer should be
US-FDA approved for diabetic foot ulcers
PDGF
EDGF
VEGF
PDGF - Becaplermin
Yellow contusion is how may days old?
. 7-10 days
Reverse triage
prioritzing the greatest number of people that can be treated
can reduce venous return and produce obstructive shock
Tension pneumothorax
What type of burn is TL 1?
respiratory tract burns
Low-velocity missile damages
only the tissues it comes into contact with
Pt has red triage color. What are possible wounds?
Respiratory arrest Airway obstruction Sucking Chest Wound Cardiac arrest Severe bleeding Shock Unconsciousness Respiratory tract burns Acute Coronary Syndromes Suicidal attempts Status epilepticus
where victims and the injured are collected in casualty
primary collection point
What are the respiratory requirements for children in JumpSTART?
between 15 and 45
Who is prioritised during mass casualty?
walking injured
Use trucks to transport them
Triage Level Level 1 Level 2 Level 3 Level 4 Level 5
Level 3
Green contusion is how may days old?
. 4-5 days
Cardiac tamponade also produces obstructive shock
as blood in the pericardial sac inhibits cardiac contractility and cardiac output
GOALS OF WOUND CARE
Facilitate hemostasis, Decrease tissue loss, Promote wound healing, Minimize scar formation
Local anesthesia for wound preparation are
Direct infiltration:
. 1% lidocaine with or without epinephrine
. Bupivacaine or sensorcaine for longer acting anesthesia
different types of tagging triage pt
classic, fluorescent flagging ribbons, tear-off, pre-labeled
Blood tumors
Petechiae
Contusion
Hematoma
Hematoma
Indications of Primary Closure
Indications: Recent (<24 hr old), Clean, Viable tissue, Tension-free
What is the difference between military and civilian triage?
Military triage prioritizes getting people back onto the battle field
FAST Exam
(Focused Abdominal Sonography in Trauma)
Provides definitive care in wide range of complex traumatic patients
Level 1
Level 2
Level 3
Level 4
Level 2
What type of burn is TL 3?
Partial-thickness burns of <20% BSA
Circumscribed extravasation of blood in the
subcutaneous tissue or underneath the mucous
membrane
Petechiae
Contusion
Hematoma
Petechiae
GCS at which we intubate
equal or less than 8
Drugs affects wound healing by
Steroids and antimetabolites impede proliferation of fibroblasts and collagen synthesis
Negative pressure wound therapy is used in what basic of wound healing? How is it done?
. Reduce edema
. Removes pericellular transudate & wound exudate as well as deleterious enzymes
. Cannot be used in ischemic, badly infected or inadequately debrided wounds or in malignancy
What are the open wounds?
Abrasions Punctures Incisions Avulsions Lacerations Amputations
may be given to trauma patients with signs of significant hemorrhage who present within three hours of injury
Tranexamic acid (TXA)
Clean, sharp edges, clean nonmobile areas, laceration less than 5cm in length
staples
adhesives
tape
adhesives
Another wound affects wound healing by
Competition for the substrates for wound healing
When is compression contraindicated?
in patients with ABI <0.7
Tensile strength develops as with primary closure
Primary Closure
Spontaneous Healing
Delayed Primary Closure
Delayed Primary Closure
Factors that affect wound healing mnemonic
DIDN’T HEAL
Diabetes Infection Drugs Nutritional Tissue Necrosis Hypoxia Excessive tension on wound edges Another wound Low temperature
Hypotension, without tachycardia or cutaneous vasoconstriction
Cardiogenic Shock
Cardiac Tamponade
Tension Pneumothorax
Neurogenic Shock
Neurogenic Shock
In Disaster Response, what GCS is considered advanced neurological defect?
<8
Provides initial stabilization and
treatment. May care for uncomplicated trauma
patients
Level 1
Level 2
Level 3
Level 5
Level 3
Role of epinephrin in wound prep and closure
Vasoconstrictive Increases duration of action Promotes hemostasis Avoid end-arterial blood supply areas May increase pain (low pH)
(shock) SV x HR = to?
CO
Most desirable sites for vascular access
forearms and antecubital veins
Indications for Delayed Primary Closure
Indications are
Infected or unhealthy wounds with high bacterial content
Wounds with a long time lapse since injury
Wounds with a severe crush component with significant tissue devitalization
If mental test is satisfactory, what is next step?
place pt in green or acute
Sequence of wound healing
Homeostasis, Inflammation, granulation proliferation
What are closed wounds?
Petechiae, Contusion, Hematoma
If crossmatched blood is unavailable and indicated for exsanguinating hemorrhage use this
type O PRBC
Complications include Late wound contracture and Hypertrophic scarring
Primary Closure
Spontaneous Healing
Delayed Primary Closure
Spontaneous Healing
Green
Triage Level Level 1 Level 2 Level 3 Level 4 Level 5
Level 3
In pregnancy, what is supine hypotensive syndrome. What is tx
. After 20 weeks, enlarged uterus with fetus and amniotic
fluid compresses inferior vena cava
. Decreases venous return and decrease cardiac output
. Keep pregnant patients in left lateral decubitus position to
avoid excessive hypotension
Contraindication for NPWT/VAC wound dressing
malignancy, ischemia, inadequately debrided or badly infected wounds
Procedure for Needle Thoracostomy
Midclavicular line
14 gauge angiocath
Over the 2nd rib
Rush of air is heard
15-30% Blood loss
Class 1 Hemorrhage
Class 2 Hemorrhage
Class 3 Hemorrhage
Class 4 Hemorrhage
Class 2 Hemorrhage
Role of hyperbaric O2 therapy in wound healing
limb salvage
Penetrating vs perforating
Penetrating: entered the body
Perforating: entered the visceral part
What is the name of tape used in wound closure
Steri-strips
sacrificing for the greatest good of the greatest number
Principle of Rights Medical Disaster Multiple, Major, Mass Casualty Incidents Spock Principle Triage
Spock Principle
Hydrocolloids promote wound debridement by
autolysis
peripheral vascular resistance
preload
myocardial contractility
afterload
afterload
Inadequately perfused and poorly oxygenated cells compensate by
shift to anaerobic metabolism resulting in formation of lactic acid and development of metabolic acidosis
Evaluates for fluid in the pouch of Douglas (Posterior to bladder)
Dependent potential space
RUQ/Morrison’s pouch
Sub-xiphoid:
LUQ:
Bladder:
Bladder
Evaluate for pericardial fluid
View through liver
Transhepatic or Parasternal
Searches for fluid between heart and pericardium
RUQ/Morrison’s pouch
Sub-xiphoid:
LUQ:
Bladder:
Sub-xiphoid:
best choice for wounds in well-vascularized areas
Primary Closure
Spontaneous Healing
Delayed Primary Closure
Primary closure
How many casualties to qualify as mass casualty?
100 or more
Administer an initial, warmed fluid bolus of isotonic fluid. The usual dose
is 1 liter for adults and 20ml/kg for pediatric patients weighing less than 40kg
If perfusion test is unsatisfactory, what is the next step?
look for gross bleeding and apply direct pressure
EBW for male and female
Male: 50 kg + 2.3 kg for every inch over 5 feet
Female: 45.5 kg + 2.3 kg for every inch over 5 feet
Urinary output is only mildly affected (20-30ml/hour in an adult)
Class 1 Hemorrhage
Class 2 Hemorrhage
Class 3 Hemorrhage
Class 4 Hemorrhage
Class 2 Hemorrhage
What are requirements of tagging triage pt
Durable, Visible from great distances, Simple/Self-explanatory, Cost effective, Numbered
This is essential for venous stasis ulcers
compression
Commonly injured with compression forces
spleen
Partial thickness burns 12% BSA including respiratory tract
Triage Level Level 1 Level 2 Level 3 Level 4 Level 5
Level 1
Black
Triage Level Level 1 Level 2 Level 3 Level 4 Level 5
Level 4
What is JumpStart triage?
triage in disasters for children
31-40% blood loss
Class 1 Hemorrhage
Class 2 Hemorrhage
Class 3 Hemorrhage
Class 4 Hemorrhage
Class 3 Hemorrhage
Nutritional affects wound healing by
. Protein-calorie malnutrition and deficiencies of vitamin A (collagen synthesis, antioxidant), C (collagen synthesis), and zinc (fibroblast proliferation)
. Malnutrition: impaired organ function, impaired collagen synthesis, impaired immune function, reduced antioxidant activity
Vitamin C deficiency role in wound healing is
collagen synthesis
Life-threatening
Triage Level Level 1 Level 2 Level 3 Level 4 Level 5
Level 1
wound left open and allowed to close by epithelialization and contraction
Primary Closure
Spontaneous Healing
Delayed Primary Closure
Spontaneous Healing
In triage what does Kiss-U principle mean?
KEEP IT STUPIDLY SIMPLE + UNIFORM
What local anesthetic has the shortest duration?
cocaine, procaine
JumpSTART children in yellow for non-ambulatory signifies?
significant external signs of injury are found
What parameters are used to categorize them?
Respiration, Perfusion and Mental Status
wounds created and closed in the operating room
Primary Closure
Spontaneous Healing
Delayed Primary Closure
Primary closure
Excessive tension on wound edges affects wound healing by
Local tissue ischemia and necrosis
It is the resistance to the forward flow of the blood
preload
myocardial contractility
afterload
afterload
White
Level 1 Level 2 Level 3 Level 4 Level 5
Level 5
In casualties what does START stand for?
Simple Triage And Rapid Treatment
If mental test is unsatisfactory, what is next step?
pt in immediate
Could be internal or External
Principle of Rights Medical Disaster Multiple, Major, Mass Casualty Incidents Spock Principle Triage
Medical Disaster
Traige success factors?
Pre-planning (conduct drills), Medical Triage Officer, Kiss-U Principle
Urinary output is one f the prime indicators of resuscitation and patient response
Adequate volume replacement: 0.5ml/kg/hr (adult); 1ml/kg/hr (under 1 year)
How does hyperbaric medicine promote wound healing?
Stimulates angiogenesis and fibroblast migration, enhances neutrophil and antibiotic killing action, and suppresses alpha toxin production in gas gangrene
Normal adult blood volume percentage of tbw. Child?
7% of body weight
child: 8-9%
Triage patient not breathing. Next step is?
If they breath, what TL? If not, what TL?
open airway; use Positioning the airway
yes: immediate or red
no: black, pt is dead or dying
Superficial, straight laceration under little tension
staples
adhesives
tape
tape
Degree of exsanguination is immediately life-threatening
Class 1 Hemorrhage
Class 2 Hemorrhage
Class 3 Hemorrhage
Class 4 Hemorrhage
Class 4 Hemorrhage
Rights to proper healthcare / rights to be seen by a who would want to see us / Everybody has their own right
Principle of Rights Medical Disaster Multiple, Major, Mass Casualty Incidents Spock Principle Triage
Principle of Rights
Rank these dressing’s absorption characteristics from low to high
Films
Foams, alginates, collagen
hydrocolloids
hydrogels
None: films
Low: hydrogels
Moderate: hydrocolloids
High: foams, alginates, collagen
Walking injured prioritised
Principle of Rights Medical Disaster Multiple, Major, Mass Casualty Incidents Spock Principle Triage
Multiple, Major, Mass Casualty Incidents
Exemplified by the condition of an individual who has donated 1 unit of blood
Class 1 Hemorrhage
Class 2 Hemorrhage
Class 3 Hemorrhage
Class 4 Hemorrhage
Class 1 Hemorrhage
Damage Control Resuscitation (DCR) in combination with Damage Control Surgery
to control hemorrhage rapidly and prevent
coagulopathy by minimizing crystalloid use and
transfusing early
View between the spleen and kidney
Another dependent place that fluid collects
Also see diaphragm in this view
RUQ/Morrison’s pouch
Sub-xiphoid:
LUQ:
Bladder:
LUQ:
Force applied causes the subcutaneous tissue will lead to
the accumulation of blood causing it to elevate
Petechiae
Contusion
Hematoma
Hematoma
Zinc deficiency role in wound healing is
fibroblast proliferation
Hypoxia affects wound healing by
. Especially the distal extent of the extremities
. Blood volume deficit, unrelieved pain, or hypothermia (arrow) sympathetic overactivity (arrow) local vasoconstriction (arrow) inadequate tissue oxygenation
<15% blood loss
Class 1 Hemorrhage
Class 2 Hemorrhage
Class 3 Hemorrhage
Class 4 Hemorrhage
Class 1 Hemorrhage
Deteriorating neurovital signs
Disaster Response Level Level I Level II Level III Level IV
Level II
Progressive vasoconstriction of cutaneous, muscular, and visceral circulation to preserve blood flow to the
kidneys, heart, and brain
Disposition: custodial care
Triage Level Level 1 Level 2 Level 3 Level 4 Level 5
Level 4
Infection affects wound healing by
. Potentiates collagen lysis
. Bacterial contamination (plus) susceptible host (plus) wound environment (equals) wound infection
. Foreign bodies (including sutures) potentiate wound infection
Triage Level I victims
Disaster Response Level Level I Level II Level III Level IV
Level IV
What is used for recalcitrant ulcers?
electrical stimulation
Complications of Spontaneous Healing
Late wound contracture
Hypertrophic scarring
BASIC OF TRAUMA ASSESSMENT
Preparation Triage Primary Survey Resuscitation Secondary Survey Monitoring and Evaluation, Secondary adjuncts Transfer to Definitive Care
What are disadvantages of tagging triage pt?
Organizational uncertainty, Tunnel-vision mentality. Some studies: no improvement in patient outcome, Expensive, Delays patient care and transport
Most common sign of shock
Tachycardia (HR > 100)
Important consideration for avulsion skin
Do not allow the avulsed portion to freeze
Do not immerse it in water or saline
Regional block anesthesia in important in wound preparation because
. Local infiltration proximally in order to avoid tissue disruption
. Smaller amount of anesthesia required
Pt has yellow triage color. What are possible wounds?
Open thoracic wound Penetrating Abdominal wound Severe eye injury Avascular limb Significant burns other than the face, neck or perineum Moderate bleeding Conscious patients with head injuries Anxiety states Multiple fractures
No Care
Triage Level Level 1 Level 2 Level 3 Level 4 Level 5
Level 5
wound closed by approximation of wound margins or by placement of a graft or flap
Primary Closure
Spontaneous Healing
Delayed Primary Closure
Primary closure
Determined by venous capacitance, volume status, venous flow
preload
myocardial contractility
afterload
preload
Delay of a few minutes: Fatal
Triage Level Level 1 Level 2 Level 3 Level 4 Level 5
Level 1
What type of burn is TL 2?
Significant burns other than the face, neck or perineum
Without surgical intervention
Primary Closure
Spontaneous Healing
Delayed Primary Closure
Spontaneous Healing
Dead and Dying
Triage Level Level 1 Level 2 Level 3 Level 4 Level 5
Level 4
What are the differences in prophylaxis for tetanus in clean wounds vs tetanus prone wounds?
clean: give toxoid after 10 yo
tetanus prone: give toxoid after 5 yo
EBW for pediactrics
1-11 months: (0.5 x age in months) + 4
1-5 years: (2 x age in years) + 8
6-12 years: (3 x age in years) + 7
Evacuees
Triage Level Level 1 Level 2 Level 3 Level 4 Level 5
Level 5
Ambulatory or Primary Care
Triage Level Level 1 Level 2 Level 3 Level 4 Level 5
Level 3
High-velocity missile damages
by forcing the tissues and body parts away from the track of the missile with a velocity only slightly less than that of the missile itself
Airway Interventions
Maintenance of Airway Patency
Airway Support
Definitive Airway
How is perfusion measured?
capillary filling time - press nail, wait 2 seconds
requiring prolonged life support in an intensive care unit
Disaster Response Level Level I Level II Level III Level IV
Level III
What is the AVPU scale
Alert
Responds to verbal stimulation
Responds to pain
Unresponsive
> 40% blood loss
Class 1 Hemorrhage
Class 2 Hemorrhage
Class 3 Hemorrhage
Class 4 Hemorrhage
Class 4 Hemorrhage
Much delayed degree of urgency
Triage Level Level 1 Level 2 Level 3 Level 4 Level 5
Level 3
Expectant or Pending Care
Triage Level Level 1 Level 2 Level 3 Level 4 Level 5
Level 4
Tissue Necrosis affects wound healing by
From local or systemic ischemia or radiation injury. Blood supply is important
is the earliest measurable circulatory sign of shock
Tachycardia
a lot of patients fall under this category
Triage Level Level 1 Level 2 Level 3 Level 4 Level 5
Level 3
What is show bridging?
Connective tissue or blood vessels are flattened
against the underlying hard surface
Disposition: Safe evacuation
Triage Level Level 1 Level 2 Level 3 Level 4 Level 5
Level 5
Only large puncture wounds are susceptible to infection?
True or false
False; possible in all puncture wounds
Tachycardia, muffled heart sounds, and dilated, engorged neck veins with hypotension and insufficient response to fluid therapy
Cardiogenic Shock
Cardiac Tamponade
Tension Pneumothorax
Neurogenic Shock
Cardiac Tamponade
Important consideration for grease contamination in wounds
Very hard to remove and so you make sure to give your Pt. anesthetic agent first.
If perfusion test is satisfactory, what is the next step?
measure mental status by giving simple command
Delayed, Acute or Non-ambulatory Care
Triage Level Level 1 Level 2 Level 3 Level 4 Level 5
Level 2
Includes: Open thoracic wound, Penetrating Abdominal wound, Severe eye injury, Avascular limb, Significant burns other than the face, neck or perineum
Triage Level Level 1 Level 2 Level 3 Level 4 Level 5
Level 2
Indications are
Infected or unhealthy wounds with high bacterial content
Wounds with a long time lapse since injury
Wounds with a severe crush component with significant tissue devitalization
Primary Closure
Spontaneous Healing
Delayed Primary Closure
Delayed Primary Closure
What pressure should compression be?
30 - 40 mmHg
Procedure for Tube Thoracostomy
Insertion site: 5th ICS; Anterior axillary line
2-3 cm incision along rib margin with #10
When does granulation tissue develop?
> 24hrs
can cause unexplained hypotension, cardiac dysrhythmia, usually bradycardia; insert nasal or oral tube
Gastric Dilation/ Decompression
Disaster Response Level 2 victims
Disaster Response Level Level I Level II Level III Level IV
Level III
Caused by a clean, sharp-edged object
Involve only the epidermis
Tend to bleed freely
Abrasions Punctures Incisions Avulsions Lacerations Amputations
Incisions
wounds that are too heavily contaminated for primary closure but appear clean and well vascularized after 4-5 days of open observation
Primary Closure
Spontaneous Healing
Delayed Primary Closure
Delayed Primary Closure
Tx for Hemothorax
Large Caliber Tube Thoracostomy
Why are vasopressors are contraindicated as a first-line treatment of hemorrhagic shock?
because they worsen tissue perfusion
Disability check in basic trauma
. Pupillary exam . AVPU scale . Gross neurological exam - extremity of movement . Glasgow Coma Scale: 3-15 . Rectal Exam
Low temperature affects wound healing by
(relatively) distal aspects of the upper and lower extremities (a reduction of 1-1.5C (2-3F) from normal core body temperature) is responsible for slower healing of wounds at these sites
Volume of venous blood return to the left and right sides of the heart
preload
myocardial contractility
afterload
preload
Secondary survey history mnemonic
AMPLE
Allergies Medications Past medical history, ob Last meal Events surrounding injury
What is the role of glucose in wound healing?
give energy for angiogenesis and the deposition of new tissue
Presence of granulation tissue
Primary Closure
Spontaneous Healing
Delayed Primary Closure
Spontaneous Healing
Suture removal guides in days for
Face Arm Anterior trunk Back Feet and hand Joint scalp
Face (3-5)
Arm (7)
Anterior trunk
Back (10-14)
Feet and hand
Joint
scalp
Topical anesthesia for wound preparation are
solution or paste: LET, TAC, EMLA
Neurogenic shock results from
extensive injury to the cervical or upper thoracic spinal cord caused by a loss of sympathetic tone and subsequent vasodilation
What is the role of fatty acids in wound healing?
essential for cell structure and have an important role in the inflammatory process
What is considered a massive transfusion?
> 10 of PRBC within the first 24 hours of admission or more than 4 units in 1 hour
Differences in head to body ratio and relative size and
location of anatomic features make children more
susceptible to
head injury, abdominal injury
Disposition: Immediate resuscitation and transport (Trauma and Tertiary Hospitals)
Triage Level Level 1 Level 2 Level 3 Level 4 Level 5
Level 1
What are the determinants of stroke volume?
preload, myocardial contractility, afterload
FAST can identify pericardial fluid, which suggests cardiac tamponade as the cause of shock
Cardiogenic Shock
Cardiac Tamponade
Tension Pneumothorax
Neurogenic Shock
Cardiac Tamponade
100 or more casualty
Principle of Rights Medical Disaster Multiple, Major, Mass Casualty Incidents Spock Principle Triage
Multiple, Major, Mass Casualty Incidents
Pt is breathing with 35 breaths/min. What is next step?
classify as immediate (more than 30/min)
What chemicals can be used for hemostasis? (stop the bleeding)
Epinephrine, Gelfoam, Oxycel, Act
Tension Pneumothorax
. Develops when air enters the pleural space, but a flap-valve mechanism prevents its escape
. Intrapleural pressure rises, causing total lung collapse and a shift of the mediastinum to the opposite side, with subsequent impairment of venous return and a fall in cardiac output
The first step in managing shock in trauma is to
recognize its presence.
Tx for Tension Pneumothorax
Needle Decompression
2nd Intercostal space, Midclavicular line
Tube Thoracostomy
5th Intercostal space, Anterior axillary line
approximation of wound margins occurs via reepithelialization and wound contraction by myofibroblasts
Primary Closure
Spontaneous Healing
Delayed Primary Closure
Spontaneous Healing
Includes: Minor bleeding, Minor soft tissue injuries, Contusions, sprains, Superficial burns, Partial-thickness burns of <20% BSA
Triage Level Level 1 Level 2 Level 3 Level 4 Level 5
Level 3
Transient response to initial fluid resuscitatoin
. Transient improvement, recurrence of decreased, blood pressure and increased heart rate
. Moderate blood loss (15-40%)
. Moderate to high need for blood
. Type specific blood adequate
Peeling
Abrasions Punctures Incisions Avulsions Lacerations Amputations
Avulsions
No changes in blood pressure, pulse pressure, or respiratory rate
Class 1 Hemorrhage
Class 2 Hemorrhage
Class 3 Hemorrhage
Class 4 Hemorrhage
Class 1 Hemorrhage
Wounds are torn rather than cut
Ragged irregular edges and masses of torn tissue
underneath
Abrasions Punctures Incisions Avulsions Lacerations Amputations
Lacerations
Where scar is less of an issue (hairy scalp)
staples
adhesives
tape
staples
What is the role of protein deficiency in wound healing?
contribute to poor healing rates with reduced collagen formation and wound dehiscence
In FAST exam
4 views of the abdomen to look for fluid.
RUQ/Morrison’s pouch
Sub-xiphoid: view of heart
LUQ: view of spleno-renal junction
Bladder: view of pelvis
Arterial hypotension in shock
Arterial Hypotension (SBP < 120)
Femoral Pulse – SBP > 80
Radial Pulse – SBP > 90
Carotid Pulse – SBP > 60
Disposition: depends on space availability
Triage Level Level 1 Level 2 Level 3 Level 4 Level 5
Level 3
Immediate or Critical Care
Triage Level Level 1 Level 2 Level 3 Level 4 Level 5
Level 1
Wound edges are approximated within 3-4 days
Primary Closure
Spontaneous Healing
Delayed Primary Closure
Delayed Primary Closure
Victim seen in 2-12 hrs
Disaster Response Level Level I Level II Level III Level IV
Level II
Advanced neurological deficits (GCS<8)
Disaster Response Level Level I Level II Level III Level IV
Level I
Primary closures are not made to prevent anaerobic infections
Abrasions Punctures Incisions Avulsions Lacerations Amputations
Punctures
requiring formal surgical care
Disaster Response Level Level I Level II Level III Level IV
Level III
How do you label geographic sorting?
Disaster flags, Chemical light sticks, Colored strobe lights
Usual response to acute circulating volume depletion is an (decrease/increase) in heart rate in an attempt to preserve cardiac output
Usual response to acute circulating volume depletion is an increase in heart rate in an attempt to preserve cardiac output
Yellow
Triage Level Level 1 Level 2 Level 3 Level 4 Level 5
Level 2
Red
Triage Level Level 1 Level 2 Level 3 Level 4 Level 5
Level 1
Between the liver and kidney in RUQ.
First place that fluid collects in supine patient
RUQ/Morrison’s pouch
Sub-xiphoid:
LUQ:
Bladder:
RUQ/Morrison’s pouch
Delay has no impact
Triage Level Level 1 Level 2 Level 3 Level 4 Level 5
Level 3, Level 4, Level 5
Second or third degree burns involving more than 50% of total BSA
Disaster Response Level Level I Level II Level III Level IV
Level II
Victims who do not require hospitalization
Triage Level Level 1 Level 2 Level 3 Level 4 Level 5
Level 3
BP of < 50 mmHg systolic and below despite initial resuscitation
Disaster Response Level Level I Level II Level III Level IV
Level I
Indications: Recent (<24 hr old), Clean, Viable tissue, Tension-free
Primary Closure
Spontaneous Healing
Delayed Primary Closure
Primary closure
Bleeding not profuse; Need medical attention for
disinfection
Abrasions Punctures Incisions Avulsions Lacerations Amputations
abrasion
Show bridging
Abrasions Punctures Incisions Avulsions Lacerations Amputations
Lacerations
Use refrigerated trucks
Triage Level Level 1 Level 2 Level 3 Level 4 Level 5
Level 4
Any injured patient who in what condition should be considered to be in shock until proven otherwise?
is cool to the touch and is tachycardic
Serious but stable
Triage Level Level 1 Level 2 Level 3 Level 4 Level 5
Level 2
Includes: Respiratory arrest, Airway obstruction, Sucking Chest Wound, Cardiac arrest, Severe bleeding
Triage Level Level 1 Level 2 Level 3 Level 4 Level 5
Level 1
Breakage of capillary vessels
Petechiae
Contusion
Hematoma
Petechiae
Anesthesia is what basic step in wound healing
Wound preparation and closure
shear force trauma from
. Acceleration/Deceleration Injury, E.g. Aorta
. Shearing force = Spectrum from Full thickness tear (Exsanguination) to Partial tear (Pseudoaneurysm)
Which is the most painful?
Abrasion
Incision
Lacerations
abrasion
Wound dressing requirements
. Maintain moist 24-48 hours (augments reepithelialization)
. Be “water-tight” after 48 hours
Those brought to you non-walking or stretcher will be what color/s?
red, yellow, black
(Shock) CO = to?
SV x HR
Basics in wound healing (IMPORTANT)
Wound evaluation and history Wound preparation and closure Optimize systemic parameters Debride nonviable tissue Reduced wound burden Optimize blood flow Reduce edema Use dressings appropriately Use pharmacologic therapy Close wounds with suturing/grafts/flaps as indicated
Early administration of blood products must be considered in
class 3 and 4 hemorrhage
Delay of few hours: no impact
Triage Level Level 1 Level 2 Level 3 Level 4 Level 5
Level 2
How is high pressure irrigation to wound done?
. High pressure irrigation (Normal Saline)
. Minimum 100-300 ml with continued irrigation
. At least 8 psi force to the wound (arrow) irrigation fluid dislodges foreign bodies, contaminants, and bacteria
After a wound the platelets do this
adhere to damaged endothelium and discharge adenosine diphosphate (ADP), promoting thrombocyte clumping, which dams the wound
Pt has green triage color. What are possible wounds?
Minor bleeding Minor soft tissue injuries Contusions, sprains Superficial burns Partial-thickness burns of <20% BSA