PRE-OP AND POST-OP CARE

Question 1

Ejection fraction where you can’t do surgery

Answer 1

35%

Normal is 55%

Question 2

Single worst finding predicting high cardiac risk

Answer 2

Jugular venous distention

Tx with ACE inhibitors, beta blockers, digitalis, diuretics

Question 3

Malignant hyperthermia

Answer 3

Shortly after halothane or succinylcholine
Temperature >104F
Metabolic acidosis + hypercalcemia

Tx: IV dantrolene, 100% oxygen

Question 4

When does post op MI happen?

Answer 4

2-3 days later

Question 5

What prolongs paralytic ileus?

Answer 5

Hypokalemia

Question 6

Hypernatremia water loss - what is the equation?

Answer 6

Every 3mEq/L above 140 of serum sodium = 1L of water lost

Question 7

Fluids to use in alkalosis vs acidosis

Answer 7

Alkalosis - Normal saline

Acidosis - Ringer lactate

Question 8

Speed limit of K+ administration

Answer 8

10 mEq/h

Question 9

How does hypokalemia develop

Answer 9

Slowly - K+ lost from GI tract or in urine

Rapidly - DKA when K+ moves into the cells

Question 10

How does hyperkalemia develop

Answer 10

Slowly - kidney can’t excrete

Rapidly - K+ being dumped from cells (crush injuries, etc…)

Tx with hemodialysis