UWorld Blocks

Question 1

Pt with mitral stenosis. Best way to increase forward flow?

Answer 1

decrease afterload (afterload equals pressure in aorta). Bigger effect than decreasing preload

Question 2

Constrictive pericarditis vs cardiac tamponade - timescale?

Answer 2

Slow developing (months) vs rapid developing (days)

Question 3

Pt given muscle relaxant. Goes into V-fib and serum K = 10. Drug?

Answer 3

Succinylcholine. Increased K because of the continuous depol of phase I

Question 4

Vagus nerve branches (laryngeal nerves) and what they innervate?

Answer 4

External (from Superior) - cicothyroid
Internal (from superior) - sensory above vocal cords
Recurrent - all muscles except cricothyroid and sensory innervation below vocal cords

Question 5

Microbes with Edema factors?

Answer 5

Anthrax and Bordetella

Question 6

Virus ressortment or recombination?

Answer 6

if segmented, ressortment. If not, then recombination

Question 7

Virus: Phenotypic mixing?

Answer 7

co-infection by 2 viruses can lead to a swapping of nucleocapid materials