Trauma Flashcards
Triage categories can change based upon what
Number of injured
Available resources
Nature and extent of injuries
Change in patients condition
Hostile threat in the area
How do you define multiple casualties
The number of patients and the severities of their injuries do NOT exceed the resources and capabilities
How do you define mass casualties
The number of patients and the severities of their injuries DO exceed the resources and capabilities
What are the five principles of triage
Degree of life threat posed by the injuries sustained
Injury severity
Salvageability
Resources
Time, distance, and environment
Which principal of triage entails looking at each patient in a total global fashion
Injury severity
When is application of triage principles used
Decisions made are based on the best information available at the time
A large number of patients into small manageable groups
Mode of evacuating and transporting patients
What are the categories of military triage
Delayed
Immediate
Minimal
Expectant
Define the immediate military triage category
Needs lifesaving interventions within minutes up to 2 hours on arrival to avoid death or major disability
What are examples of an immediate patient
Penetrating chest wound WITH respiratory distress
Torso, neck, or pelvis injuries WITH shock
Threatened loss of limb
Retrobulbar hematoma (threat to loss of sight)
Define the delayed military triage category
Requires medical attention but CAN wait
What are examples of a delayed patient
Moderate to severe burns with less than 20% of total body surface area (greater than 20% is immediate)
Define the minimal triage category
Can be treated with self aid, buddy aid, or corpsman aid
Define the expectant military triage category
Require complicated treatments that may not improve life expectancy
What is the fourth stripe on the tag - casualties are dead or non-salvageable and entails no care is needed
Black (deceased/expectant)
What is the third stripe on the tag - casualties have minor injuries and will need minimal care
Green (minimal)
What is the second stripe on the tag - casualties are in the most need of care and/or transport to a higher echelon of care
Red (immediate)
What is the first stripe on the tag - casualties will need care, but in no hurry
Yellow (delayed)
What is primary triage
Simple and quickly categorizing patients; identifying and stop life threats. Breaks patients down into more manageable patients
Immediate life sustaining care and situation awareness are part of what triage
Primary triage
What is secondary triage
Allows for adjustment on patient response, to direct more in-depth treatment and prepare for a nine-line medical evacuation request
What is tertiary triage
Continued management of patients where more complicated procedures should be weighed against situation
Early trauma deaths are due to disruptions in one, or all, of the three bodily systems - what are those
The respiratory system
The vascular system
Or the central nervous system
What is combat stress
Rapid identification and immediate segregation of stress casualties from injured patients will improve the odds of a rapid recovery
What are the categories of combat stress
Light stress
Heavy stress
Define light stress
Immediate return to duty or return to unit or unit’s non combat support element with duty limitations or rest
Define heavy stress
Send to combat stress control restoration center for up to 3 days reconstitution
What is the pneumonic used where resources and tactical situations allow
BICEP:
Brief
Immediate
Central
Expectant
Proximal
Simple
Or refer
Define brief from “BICEP”
Keep interventions to 3 days or less of rest, food and reconditioning
Define immediate from “BICEP”
Treat as soon as symptoms are recognized. Do not delay ***
Define central from “BICEP”
Keep in one area for mutual support and identity as service member
Define expectant from “BICEP”
Reaffirm that we expect them to return to duty after brief rest; normalize the reaction and their duty to return to their duty
Define proximal from “BICEP”
Keep them as close as possible to the unit
Define simple from “BICEP”
Do not engage in psychotherapy… address the present stress response and situation only, using rest, limited catharsis and brief support
Define the “or refer” of “BICEP”
Must be referred to a facility that is better quipped or staffed for care
Define level 1 echelon of care
First medical care military personnel receive. Includes immediate life-saving measures, disease and non-battle injury prevention and care, combat and operational stress control (COSC), patient location and acquisition.
What treatment is provided by level 1 echelon of care
Self-aid and buddy aid
Combat life saver
Medical personnel
Examples include: BAS, cruisers, destroyers
What is level 2 echelon of care
Initial resuscitative care is primary objective of care - saving life, limb and when necessary - stabilization for evacuation to level 3
What are examples of level 2 echelon of care
CRTS: LHD (largest medical capability), LHA, CVN
MEDBN - provides surgical care for the MEF (Consists of 1 HQ company and 3 surgical companies)
STP (shock trauma platoon) - a small forward unit with one physician supporting the MEF
FRSS (forward resuscitative surgical suite)
What is R2LM and R2E and what echelon of care do they fall under
R2LM - Role 2 Light Maneuver; light, highly mobile medical units designed to support lane maneuver formations
R2E - role 2 enhanced; provides basic secondary healthcare built around primary surgery, intensive care unit, and ward beds
Define level 3 echelon of care
The highest level of care available within a combat zone - advanced resuscitative care is the primary objective of care
What are examples of level 3 echelon of care
Fleet hospitals, fleet ships (USNS comfort/mercy)
Define level 4 echelon of care
Definitive medical care is the primary objective at this level
What is an example of level 4 echelon of care
OCONUS hospital - NH Yokosuka
Define level 5 echelon of care
Restorative and rehabilitative care is the primary objective of care at this level
What is an example of level 5 echelon of care
CONUS hospital - NMCSD
What is a MEDEVAC
Timely, efficient movement and en route care provided by medical personnel to the wounded being evacuated from the battlefield to the MTF
What is a CASEVAC
Movement of casualties from the point of injury to medical treatment by non-medical personnel (may not receive en route medical care
What is AE
Aeromedical evacuation - generally utilizes USAF fixed-winged aircraft to move sick or injured personnel within the theater of operations (intra-theater) or between two theaters (Inter-theater)
What litters are used to transport casualties
Standard litter - prefabricated and may have accessories to be used with them
Stokes litter - most commonly used litter onboard ships
SKED litter - compact and lightweight transport system
Improvised litter - made from various materials
What are methods of ground evacuation
M997 Ambulance: protection for crew and patients
M1035 Ambulance: removable soft top
MK 23 7 ton: non-medical vehicle that may be utilized for casualty transport when available
What are the methods of air evacuation
UH-60A Blackhawk
UH-60B Seahawk
CH-46 Sea Knight
CH-53 D/E Sea Stallion
CH-1 Huey
MV-22 Osprey
C-2 Greyhound
P-3 Orion
C-130 Hercules
What are the MEDEVAC/CASEVAC priorities
Urgent - casualty must be evacuated within 2 hours in order to save life, limb or eyesight
Priority - casualty must be evacuated within 4 hours or condition could worsen
Routine - casualty must be evacuated within 24 hours for further care
What are examples of an urgent MEDEVAC/CASEEVAC
Cardio respiratory distress
Uncontrolled hemorrhage
Shock not responding to IV therapy
Head injuries with signs of increased ICP
Extremities with neurovascular compromise
What are examples of a priority MEDEVAC/CASEVAC
Flail chest segments without respiratory compromise
Open fractures
Spinal injuries
Major burns
What are examples of routine MEDEVAC/CASEVAC
Minor to moderate burns
Simple, closed fractures
Minor open wounds
Terminal casualties
What is line 3 of the 9 line
Number of patients by precedence:
A - urgent
C - priority
D - routine
What is line 4 of the 9 line
Special equipment needed
A - none
B - hoist
C - extraction equipment
D - ventilator
What is line 7 of the 9 line
Method of marking pickup site
A - panels
B - pyrotechnics ***
C - smoke
D - none
E - other
The MIST report consists of what categories
Mechanism of Injury
Injuries sustained
Signs/symptoms
Treatment
What states that every object will remain at rest or in uniform motion unless compelled to change its state by the action of an external force
Newton’s first law - commonly known as inertia
What is Newton’s second law
Builds on the first and further defines a force (F) as equal to the product of the mass (M) and acceleration (A): F=ma
Force = mass x acceleration/deceleration
What forms can energy take
Mechanical
Thermal
Electrical
Chemical
Who first proposed that the kinetic energy possessed by the bullet was dissipated in four ways
Theodore Kocher
What are the ways a bullet is dissipated
Heat
Energy used to move tissue radically outward
Energy used to form a primary path by direct crush of the tissue
What is cavitation
When a solid object strikes the human body or when the body is in motion and strikes a stationary object, the tissue particles are knocked out of their normal position creating a hole or cavity
What is the momentary stretch or movements of tissue away from the path of the bullet
The temporary cavity (think a vaccine)
What forms at the time of impact and is caused by compression or tearing of tissue, but it does not necessarily rebound to its original shape and can be seen later
The permanent cavity (think GSW)
What is the deviation of the projectile in its longitudinal axis from the straight line of flight
Yaw
What is the forward rotation around the center of mass
Tumbling
What is a mushrooming of the projectile that increases the diameter of the projectile, usually by a factor of 2, increases the surface area, and, hence, the tissue contact area by four times; hollow point, soft nose, and dum-dum bullets all promise deformation
Deformation
What is multiple projectiles can weaken the tissue in multiple places and enhance the damage rendered by cavitation. This usually occurs in high-velocity misses
Fragmentation
What are the energy levels of projectiles
Low
Medium
High
What is an example of a low level energy projectile
Knives, needles, ice picks
What is an example of medium energy projectiles
9 mm
What is an example of a high energy level of projectiles
.44 magnum
Elastic tissue tolerate damage better than non-elastic organs, what are examples of each organ group
Elastic tissue - bowel and lung
Non-elastic tissue - heart, liver, kidney and brain
The approach to thoracic injuries typically depends upon the mechanism, severity, and the location of injury, list examples of each
Mechanism - penetrating vs. blunt
Severity - life threatening vs. stable
Location of injury - chest wall vs. pleura vs. lung
What categories are blast injuries subdivided into
Primary - remember perforated tympanic membrane
Secondary - flying debris/fragments
Tertiary - body displacement
Quaternary - burns
What are the TCCC approved tourniquets
Combat application tourniquets (C.A.T.)
Special operations forces tourniquet - tactical (SOFT-T)
Emergency and military tourniquet (EMT)
What can be used as a temporary measure and works most of the time for external bleeding and can even be used for carotid and femoral bleeding
Direct pressure
What are the TCCC approved hemostatic agent
Combat gauze
Celox gauze or chito gauze - active ingredient is chotosan, a mucoadhesive, it functions independent of the coagulation cascade
XStat - best for deep narrow tract junctional wounds
What are the locations of junctional wounds
Groin
Buttocks
Perineum
Axillae
Base of the neck
Extremities
What are the CoTCCC Junctional tourniquets
Combat ready clamp
Junctional emergency treatment tool
SAM junctional tourniquet
What is the primary involuntary respiratory center
Medulla
What is connected to the respiratory muscles by the vagus nerve
The pons
Primary control centers come from the medulla and pons; what is this called
Neural control
What factors increase and decrease respirations
Increases respirations: body temperature, emotion, pain, hypoxia, acidosis, stimulant drugs
Deceases respirations: depressant drugs, sleeping agents, drugs like morphine
What is anoxia
There is no oxygen available at all
What is hypoxia
Literally means “deficient in oxygen”, that is an abnormally low oxygen availability to the body or an individual tissue or organ
What is hypoxemia
Insufficient oxygenation; that is decreased partial pressure of oxygen in blood
True or false: All trauma casualties should receive appropriate ventilator support with supplemental oxygen to ensure that hypoxia is corrected or averted entirely
True
What are indications for oxygen therapy
Cardiac and respiratory arrest
Hypoxemia
Hypotension
Low cardiac output and metabolic acidosis
Respiratory distress
When is hyperbaric oxygen used
For decompression illness (the “bends”)
Carbon monoxide poisoning
Why is Sellick’s maneuver helpful
Aids in preventing aspiration, particularly during BVM ventilation
Prevention of gastric aspiration is one of the key components in airway maintenance
Which maneuver improves the visualization of the larynx structures and eases the intubation
BURP maneuver
What is an indication to apply an OPA on a patient
Casualty who are unable to maintain their airway
What is a complication to using an OPA
Due to gag reflex stimulation, use of the OPA may lead to gagging, vomiting, and laryngospasm in casualties who are conscious
What are complications to using an NPA
Bleeding cause by insertion may be a complication
Inserting the NPA into the brain with a basilar skull fracture
Nasal turbinate injury
What is an i-Gel
A supraglottic airway
What is a contraindication to doing endotracheal intubation
Cervical fractures
What are complications of endotracheal intubation
Hypoxemia from prolonged intubation attempts
Trauma to the airway with resultant hemorrhage
Right mainstem bronchus intubation
Esophageal intubation
Vomiting leading to aspiration
Loose or broken teeth
Injury to vocal cords
What is the sniffing position
The head is extended, and the neck is flexed
What is also known as a blind insertion airway device (BIAD) often used in the pre-hospital, emergency setting
The Combitube - esophageal tracheal airway
What is an indication to use the combitube airway
Airway management in trapped patients
What is a contraindication of using the combitube airway
Patients with known esophageal pathology
Patients with intact gag reflexes
What are complications os using the combitube airway
Increased incidence of sore throat, dysphasia and upper airway hematoma when compared to endotracheal intubation and LMA
Esophageal rupture is a rare complication but has been described
May be partially preventable by avoiding over-inflation of the distal and proximal cuffs
Confirm tube placement of the combitube airway can be confirmed using what
End tidal CO2 detector or esophageal bulb device
What does not provide a definitive airway, and proper placement of the device is difficullt without appropriate training
The LMA
What are complications of using an LMA
Aspiration, because LMA does not completely prevent regurgitation and protect the trachea
Layngospasm
Sore throat
What is not a definitive airway device and plans to provide a definitive airway are necessary
LTA
What are complications of using an LTA
The laryngeal tube may be displaced during repositioning the patients head and neck for operation
Aspiration
Poor seal with inability to ventilate
What is the purpose for doing surgical cricothyrotomy
To provide an emergency breathing passage for a patient whose airway is closed by:
Traumatic injury to the neck
Burn inhalation injuries
By closing of the airway due to an allergic reaction to bee or wasp stings
Or by unconsciousness
What is considered a technique of “last resort” in prehospital airway management
Surgical cricothyrotomy
What are indications to performing surgical cricothyrotomy
Massive midface trauma precluding the use of BVM device
Inability to control the airway using less invasive maneuvers
Ongoing tracheobronchial hemorrhage
What is a contraindication to performing surgical cricothyrotomy
casulaties with acute laryngeal disease of traumatic or infectious origin
What are complications of performing a surgical cricothyrotomy
Prolonged procedure time
Hemorrhage
Aspiration
Misplaced or false passage of the ET tube
Injury to neck structures or vessels
Perforation of the esophagus
The longer the period of use, the greater the risk of complications
True or false: with the non-dominant hand to immobilize the thyroid cartilage and hold the skin taut over the membrane. Make a 3cm vertical incision centered over the cricothyroid membrane
True
A surgical cricothyrotomy can be left in place for how long
24 hours but should be replaced within that time period by a formal tracheotomy performed in a higher level of care
Needle decompression should be performed when what criteria is met
Evidence of worsening respiratory distress or difficulty with BVM device
Decrease or absent breath sounds
Decompressed shock (SBP <90 mm Hg)
What is a simple pneumothorax
A collapsed lung caused by the rupture of a congenitally weak area lung
I.e. spontaneous pneumothorax
When does a simple pneumothorax usually occur
Young white males
Age 16 to 25 year olds
Those who possess a very lanky, thin, runners build
Spontaneous simple pneumothorax occur WITH or WITHOUT evidence of trauma
WITHOUT
What is released air that becomes trapped within the subcutaneous tissue. Feels like “rice crispies” underneath the skin
Subcutaneous emphysema
Hemothorax occurs when blood enters the pleural space. Because this space can accommodate how much liquid
2500 and 3000 ml, hemothorax can represent a source of significant blood loss
The mechanisms resulting in hemothorax are the same as those causing the various types of pneumothorax. The bleeding may come from where
The chest wall musculature, the intercostal vessels, the lung parenchyma, pulmonary vessels, or the great vessels of the chest
The primary cause of hemothorax is lung laceration or laceration of an intercostal vessel or internal mammary artery due to what
Either penetrating or blunt trauma
What are the indications for performing a chest tube
Drainage of large pneumothorax
Drainage of hemothorax
After needle decompression of a tension pneumothorax
Pleural effusion
Emphysema
Simple/closed pneumothorax
Open pneumothorax
What are contraindications to placing a chest tube
Infection over insertion site
Uncontrolled bleeding
No contraindication if the procedure is emergent
What is a flail chest
The breaking of 2 or more ribs in 2 or more places
What are some signs/symptoms of a patient with a flail chest
Shortness of breath
Paradoxical chest movement
Bruising/swelling of affected chest area
Crepitus
What is the chief physiological abnormality of a pulmonary contusion
Prevention of gas exchange because no air enters these alveoli; blood and edema fluid in the tissue between the alveoli further impedes gas exchange in the alveoli that are ventilated
Fresh whole blood contains all the functional components required by the body such as what
Red blood cells
Platelets
Plasma