Trauma Flashcards
for penetrating trauma, energy is transferred to the body when? (ATOI)
at time of impact
for perforating trauma, energy is deposited where? (ITT)
in the tissue
what cervical spine number is the most commonly injured?
C7
what are the 6 P’s of SCI?
pain, paralysis, paresthesia, position, ptosis, priapism
high SCI can result in knocking out the sympathetic mediated fibers resulting in no opposition of vagal innervation when the injury is greater than what thoracic number?
T6
Succs is okay in the first how many hours after SCI?
48 hours
what are the 5 S/S of spinal shock below the level of the lesion? (B, A, GA, H, H)
bradycardia, atony, GI atony, hypotension, hypothermia
what is the “drug of choice” for spinal shock?
dopamine
short term high dose therapy of what improves neurological outcomes in SCI?
steroids
what is the methylprednisolone dose for first hour after SCI? (mg/kg/hr)
30 mg/kg/hr
what is the methylprednisolone dose for last 23 hours after SCI? (mg/kg/hr)
5.4 mg/kg/hr
where is the trigger located that causes autonomic hyper-reflexia?
below the level of injury
what are the 3 treatment options for autonomic hyper-reflexia? (RS, DA, AV)
remove stimulus, deepen anesthetic, administer vasodilator (nicardipine, nitroglycerine, nitroprusside)
autonomic hyper-reflexia: vasoconstriction above or below SCI?
below
autonomic hyper-reflexia: vasodilation above or below SCI?
above
what is the cardinal sign of autonomic hyper-reflexia?
paroxysmal HTN with severe bradycardia
autonomic hyper-reflexia happens in pts with a chronic spinal injury above what thoracic level?
T5-6
what is the preferred means to maintain a patent airway in a trauma pt? (JTWIS)
jaw thrust with inline stabilization
do you avoid N2O in trauma pts?
yes
what should FiO2 always be at?
100%
what 2 scans are the “gold standard” for SCI?
CT or MRI
what are the 2 views for preliminary C-spin fx?
lateral and swimmer’s view
what is the ketamine trauma dose? (mg/kg)
0.5-1 mg/kg
what is the etomidate trauma dose? (mg/kg)
0.1-0.2 mg/kg
what is the thiopental dose? (mg/kg)
0.5-2 mg/kg
what induction agent causes hypotension?
thiopental
what induction agent causes enhanced C/V stability and decreases CMRO2, CBF and ICP?
etomidate
what induction agent increases CMRO2, CBF, and ICP?
ketamine
what 2 muscle relaxants cause histamine release?
atracurium, mivacurium
what are 7 signs of a pneumothorax? (H, SQE, IP, IBS, HR, TS, DNV)
- hypotension
- SQ emphysema
- increase PIP
- ipsilateral breath sounds
- hyper-resonance
- tracheal shift (late sign)
- distended neck veins
what is a temporary fix for a pneumothorax?
14 gauge IV 3-6 cm long into 2nd ICS midclavicular line
what are the 3 signs of Beck’s triad?
neck vein distention, hypotension, muffled heart tones (also widened mediastinum)
for a flail chest is there inspiratory or expiratory retraction?
inspiratory
is a hemothorax dull or hyperresonant?
dull
Blood volume deficit for these:
- unilateral hemothorax
- hemoperitoneum with abd distention (range)
- pelvic fx (range)
- femur fx (range)
- tibia fx (range)
- 3000 mL
- 2000-2500 mL
- 1500-2000 mL
- 800-1200 mL
- 350-650 mL
Hemorrhage classifications (% of TBV and mL)
- Class 1
- Class 2 (range for both)
- Class 3 (range for both)
- Class 4 (range for both)
- 15%, 750 mL
- 20-25%, 1000-1250 mL
- 30-35%, 1500-1800 mL
- 40-45%, 2000-2500 mL
HR and RR > what for these hemorrhage classes:
- class 2
- class 3
- class 4
- HR > 100, RR > 20
- HR > 120, RR > 30
- HR > 140, RR > 35
SBP for these hemorrhage classe:
- class 2 (> what?)
- class 3 (< what?)
- class 4 (< what?)
- 100
- 90
- 60
Whose law says flow is directly proportional to the 4th power of the radius and inversely related to length?
Poiseuelle’s law
what is the replacement ratio of crystalloid to blood loss?
3:1
what is the IV solution for head trauma?
NS
what is the IV solution for trauma resuscitation?
LR
what is the replacement ratio of colloid to blood loss?
1:1
what are the 4 S/S of TRALI? (RD, H, H, LGF)
resp distress, hypoxemia, hypotension, low grade fever
the ratio of 1:1:1 for blood product transfusion is for what products?
PRBC:plts:FFP
what 2 ion concentrations increase after a massive blood transfusion?
K+ and H+