Formulas

Question 1

Parkland formula

Answer 1

(4mL)(% BSA with 2°/3° burns)(BW in kg)
= fluid resusitation in first 24 hours
1/2 in first 8 hours, 1/2 in second 16 hours

They also need maintenance fluid.

Question 2

SIRS criteria

Answer 2

• HR > 90
• T > 100.4F (38C) or < 96.8F (36C)
• RR > 20 or PaCO2 < 32 mmHg
• WBC > 12 or < 4, or > 10% bands

POS = >2/4

Question 3

Lights criteria

Answer 3

Fluid:serum protein < 0.5
Fluid:serum LDH < 0.6
Fluid LDH < 200

Transudate (all 3 criteria satisfied) DDx:

• CHF
• Cirrhosis
• Nephrotic syndrome
• PE

Exudate (any one violated) DDx:

• malignancy
• PNA
• TB
• pancreatitis
• esophageal rupture
• collagen vascular disease
• chylothorax/hemothorax

Question 4

CENTOR Criteria

Answer 4

• no Cough (+1)
• Exudates (+1)
• Nodes (+1)
• Temp (+1)
  < 15 yo (+1) OR > 44 yo (-1)

Question 5

Drugs given via ET Tube

Answer 5

Everyone:

• Lidocaine
• Atropine
• Naloxone
• Epinephrine

Adults Only:
- Vasopressin

Question 6

Ranson’s criteria

Answer 6

At admission:

• age > 55
• WBC > 16
• glucose > 200
• LDH > 350
• AST > 250

After 48 hours:

• hct fall >10%
• BUN rise >5
• Ca <8
• PO2 <60
• base deficit >4
• Fluid sequestration

Question 7

Wells probability of PE

Answer 7

• clinical s/s
• other dx less likely
• HR >100
• immobilization x3days or <4wks post-op
• h/o DVT/PE
• hemoptysis
• tx for malignancy w/in 6mo or palliative care

Question 8

PE findings on EKG

Answer 8

“S1Q3T3”

• large S wave in lead I
• large Q wave in lead III
• inverted T wave in lead III

or RBBB

Question 9

Nexus criteria

Answer 9

“NSAID”

• Neuro deficit
• Spinal tenderness (midline)
• AMS
• Intoxication
• Distracting injury

Can clear c-spine if all negative

Question 10

Delta Pressure for compartment syndrome

Answer 10

Delta Pressure = diastolic BP - compartment pressure

If < 30 –> acute compartment syndrome

Question 11

Galeazzi vs Monteggia injuries

Answer 11

Galeazzi: (distal)
- distal radius fx
- distal radioulnar joint dislocation
+/- ant. interosseous branch of median nerve injury

Monteggia: (proximal)

• proximal-mid ulnar fx
• radial head dislocation

Question 12

Peds uncuffed ET tube sizes

Answer 12

(Age + 16)/4

ET depth: (age/ 2) +12

Question 13

MAP

Answer 13

MAP = (SBP + (2 x DBP))/3
MAP = (CO x SVR) + CVP

Question 14

Peds Maintenance IVF

Answer 14

4 ml/kg/hr (first 10 kg)
2 ml/kg/hr (next 10 kg)
1 ml/kg/hr (each 1kg additional)