Trauma Flashcards
What percent of blood loss will typically not respond to 2 L of LR or NS?
30%
What is the most common complication of massive tranfusion?
Dilutional thrombocytopenia
(Followed by hypothermia and metabolic alkalosis)
What is the best measure of a patient’s resuscitation?
Lactate levels (less than 2.5 mg/dL)
What are the four things indicated SIRS?
HR over 90
WBC less than 4000 or greater than 12000
RRmore than 20 BPM
Tep less than 36 or greater than 38
What are the HR limits for shock classes 2-4?
2: Over 100
3: Over 120
4: Over 140
What is the MOA of TXA?
Competitive inhibitor of plasminogen activation
Motor recovery potential after repair of what nerve has the poorest recovery potential?
Peroneal nerve
What antibiotic for freshwater wound fracture?
Fluoroquinolones (cirpfloxacin)
(Target DNA gyrase, topoisomerase)
What does of ultrasound has been shown effective for healing acute fractures?
30 mW/cm2
Strain less than what percentage results in primary bone healing?
2%
(If it is over 10% it results in no bone formaiton)
What view for SC dislocation?
Serendipity view
What physis is the last to close?
Medial calvicular eiphysis (25 yo)
In PHF, what does Neer define as a part?
1 cm displacement or greater than 45 degrees of angulation
Surgery is indicated for PHF with GT displacement more than what?
5 mm
What is nonop parameters for humeral shaft?
Less than 20 degrees of anterior angulation, less than 30 degrees varus or valgus angulation, or less than 3 cm of shortening
After a radial nerve palsy, what is the first to return?
Brachioradialis followed by the ECRL
What defines the safe zone for ORIF of the radial head/neck?
Radial styloid - Lister’s tubercle (25% along the lateral side)
What are the 4 Bado classes?
- Anterior radial head dislocation with apex anterior proximal third ulna
- Posterior radial head dislocation and apex posterior proximal ulna (Annular ligament is disrupted)
- Lateral radial head dislocation and proximal ulna
- Anterior radial head and proximal third ulna & radius
If there is 3 mm of instability when radius is pulled proximally, what is injured in a monteggia?
Interosseous membrane
For a night stick fracture, when can I consider nonop for distal ulna?
Distal 2/3s, less than 50% displaced, less than 10 degrees of angulation
what pelvic view evaluates anterior or posterior displacement of the SI joint and internal/external rotational deformity?
Inlet
What pelvic view evalutes vertical displacement of SI joint and fixation of hemiplevis?
Outlet view