Emergency Medicine Flashcards
circulation: give what kind of fluids first?
2-3 L of crystalloids (normal saline or lactated ringers) then after then add blood
primary survey
A-airway with c-spine stabilization B-breathing C-circulation with hemorrhage control D-disability E-exposure
which injuries do you treat first?
the most lethal ones
how do you assess patience of airway?
c-spine injury? Stridor, signs of obstruction
Blood, loose tissue, avulsed teeth,
Fx’s: facial, mandibular, tracheal
when to intubate?
Altered mental status
Unable to maintain airway
when to do cricothyroidotomy?
If inability to intubate due to airway edema, hemorrhage, laryngeal fx.
airway interventions
Chin lift/jaw thrust Suctioning Oral or nasal airway Intubation Altered mental status Unable to maintain airway Cricothyroidotomy
what do you assess for circulation?
Vital signs: hypotension, tachycardia Pulse: strong vs. rapid/thready Level of consciousness: Impaired cerebral perfusion? Skin color: pink vs. pale/ashen Bleeding External: identify and control Internal: intra-abdominal, intra-thoracic, femur/pelvis fx. Need for emergent surgery?
how do you assess disability?
brief neuro exam: mental status ,pupil size, see if can move all 4 extremities
what doees AVPU stand for?
Alert
Responds to Verbal StimulI
Responds to Painful Stimuli
Unresponsive
3 std initial trauma x rays
lateral c-spine, CXR, pelvis
initial labs in trauma
Type and crossmatch in severely injured pt CBC, chem-7, amylase UA UPT in females ETOH, drug screen
secondary survey of head
Head Scalp bleeding Control with direct pressure Skull Signs of fx: creptius or stepoff Pupils Ears Hemotympanum? (basilar skull fx) Facial fractures
secondary survey of neck
C-spine tenderness
Laryngeal injury, tracheal deviation (tension pneumo)
Keep immobilized until injury definitely ruled out
secondary survey of cheset
Bruising, deformity, tenderness, crepitus Review CXR Injuries Sternal fx, rib fx Flail chest Tension pneumothorax Hemothorax Sucking chest wound Cardiac tamponade Aortic rupture
secondary survey of abdomen/pelvis
Distention (internal bleeding)
Ecchymosis
Penetrating wound
Tenderness
Pelvic instability (press on anterior superior iliac spine)
Place nasogastric or orogastric tube
Frequent reassessment to look for change
“High-riding” prostate suggests ?
pelvic fracture/urethral disruption
secondary survey of genitourinary
External inspection Bruises, hematomas, lacerations Rectal exam Blood? “High-riding” prostate suggests pelvic fracture/urethral disruption Bimanual vaginal exam Lacerations, blood Pregnancy test on females Place Foley catheter
secondary survey of m/S system
Musculoskeletal Back Log-roll patient while stabilizing C-spine Inspection Percussion for tenderness of thoracic or lumbar spine CVA tenderness Extremities Soft tissue injury Lacerations Fractures
secondary survey of neuro
Neuro More thorough neuro exam Level of consciousness Glascow Coma Score is the standard Re-eval of LOC and pupils Look for signs of deterioration Motor/Sensory of extremities
3 components of glasgow coma scale
eye opening, verbal response, motor response
lowest and highest scores of glasgow coma scale
3, 15
T or F: always assume hypotension is due to brain injury
F: always look for other source of hemorrhage head injuries usu cause hypertension
assessment of head trauma
Neurologic Exam
Level of consciousness
Glascow Coma Score
Pupil size/reactivity/equality
Motor exam
Unilateral deficit suggests intracranial mass lesion
If flaccidity, suspect spinal cord injury
Brainstem function
Corneal, gag reflexes
Repeated exams essential to detect deterioration
standard imaging for suspected head trauma
CT: head X-rays are worthless b/c don’t give you info on brain
tx of linear non depresses skull fx
none! if no depression, no problem with brain no tx needed
tx of depressed skull fx
feel for crepitus, surgery to elevate fragment, abx (if open)
basilar skull fx signs
Hemotypanum
Raccoon’s Eyes
Battle’s sign: mastoid ecchymosis
CSF rhinorrhea/otorrhea
tx of basilar skull fx
none! close observation
causes of airway obstruction
- Loss of muscle tone in obtunded pt: tongue obstructs oropharynx
- Foreign body aspiration
- Epiglottitis • Angioedema
- Oral-facial trauma
- Signs: stridor, inability to speak, breathe, cough
opening maneuvers of airway
- Head tilt/chin lift, jaw thrust (lift tongue away)
- If foreign body: finger sweep, back blows, Heimlich, direct visualization/removal with forceps
- If complete obstruction, consider cricothyroidotomy
life threatening causes of chest pain
- Unstable angina/acute MI
- Aortic dissection
- Pulmonary embolus • CHF
- Pneumothorax
- Pneumonia
generally benign causes of chest pain
- Costochondritis
- Pleurisy • Pericarditis
- GERD/esophageal spasm
who can have atypical presentations of chest pain/MI
women, elderly, diabetic pts
what does reversible ischemia look like on EKG?
- ST depression, T-wave flattening or inversion
* Changes resolve after episode is over
what does acute mI look like on EKG?
- ST elevation
- Reciprocal changes
- New LBBB
- Q-wave develops later
which cardiac enzyme is best to look for MI? how long do you follow?
troponin about 3-6 hours is detectable, follow for one day?
management of mI: mONAH
- Oxygen
- Aspirin (+/- clopidogrel) • Heparin/enoxaparin
- Nitrates • Beta-blockers
- If acute MI: emergent cardiac cath (vs. t-PA)
RFs for aortic dissection
age, HTN, atherosclerosis, Marfan’s syndrome
what is the typical and atypical presentation of aortic dissection?
typical: ripping or tearing pain in chest or BACK
atypical: if Dissection may occludes major vessels
− Carotids: stroke symptoms
− Coronaries: acute MI
− Brachial, iliac: arm/leg ischemia- common presentation
tx of aortic dissection
- Emergent cardiovascular surgery consult
- Lower BP, decrease shearing forces: propranolol, nitroprusside
- Proximal dissections require surgery- type II may not
what do contusions look like on brain?
white blood, surrounded by dark edema
Tearing/shearing of nerve fibers at time of impact
CT may be normal despite profound neurological deficit
Results in prolonged, possibly permanent coma
Mortality 33%, usually due to cerebral edema
diffuse axonal injury
Focal hemorrhagic area on brain, often surrounded by edema
cerebral contusion
how is intracerebral hemorrhage different from cerebral contusion/
more blood, possibility of expanding more d/t torn blood vesels
artery torn in epidural hematoma
middle meningeal
signs of impending brain herniation
ipsilateral dilated pupil and contralateral weakness
Bleeding between dura and arachnoid/brain
Appears “sickle-shaped” on CT
Due to tears of bridging veins between cerebral cortex and dura
Often with severe underlying brain injury
subdural hematoma
Bleeding between inner skull table and dura
Appears “lenticular” on CT
Usually due to skull fx. which tears middle meningeal artery
Often, little or no injury to underlying brain
May rapidly expand, causing herniation/death
If rapid surgical intervention, prognosis is often excellent
epidural hematoma
assume ___ in all pts with significant trauma
spinal injury
neuro assessment of spine
Entire spine: cervical, thoracic, lumbar Tenderness, deformity Log-roll pt to examine back One person maintains inline neck immobilization Neuro assessment Motor: corticospinal tract Pain: spinothalamic tract Position/vibration: posterior columns Rectal tone/perianal sensation
assessment of chest trauma
ABC’s,Vital signs Tachycardic? Hypotensive? Neck veins Distended? Expose chest completely Equal respiratory movement? Chest wall trauma? Crepitus? Bruising? Deformity? Quality of respiration Shallow? Rapid? Breath sounds Equal? Diminished?
signs of a tension pneumo
Resp distress Tachycardia Hypotension Tracheal deviation JVD Unilateral absent breath sounds A clinical diagnosis
these things make you think of which condition? what is the triad called?
Hypotension
Distended neck veins
Muffled heart tones
becks triad of pericardial tamponade
EKG pattern of electrical alternans signifies what?
of cardiac tamponade
tx of pericardial tamponade
IV fluids to
internal organs most commonly injured in trauma
spleen and liver
what sign will alert you to the fact that stomach or intestines have been punctured?
peritonitis and pertioneal findings; guarding, rebound tenderness, etc
organs in retroperitoneum
Duodenum, pancreas, kidneys, ureters
advantages and disadvantages of FAST exam (focused abdominal sonography for trauma)
Accurate, fast, noninvasive, portable (done at bedside)
Looks for free intraperitoneal fluid suggesting organ injury/bleed
Disadvantage: doesn’t show etiology of fluid
advantages and disadvtanges of abdominal CT for trauma
advantages: shows precise lesion, sensitive and specific
disadvatanges: takes extra time
signs of positive diagnostic peritoneal lavage (DPL)
> 100,000 RBC
>500 WBC
presence of bile or vegetable matter
signs or sx of compartment syndrome
Pain, paresthesia, pallor, pulselessness, paralysis of involved muscles
Measure compartment pressures
> 35-45
tests for near drowning
CXR, ABG, CBC, lytes
treatment of near drownign
Airway, ventilation, oxygenation C-spine stabilization and eval Cardiac monitor, O2 sat monitor, IV If persisten hypoxia: ntubation and mechanical ventilation Warming measures No role for steroids or antibx