need help with your account or subscription? click here to email us (or see the contact page)
join telegramNEW! discord
jump to exam page:
search for anything ⋅ score predictor (โ€œpredict me!โ€)

NBME 17 Answers

nbme17/Block 0/Question#0 (reveal difficulty score)
A 63-year-old man comes to the physician ...
Calcified 80% stenosis ๐Ÿ” / ๐Ÿ“บ / ๐ŸŒณ / ๐Ÿ“–
tags:

 Login (or register) to see more


 +6  upvote downvote
submitted by โˆ—waitingonprometric(264)
get full access to all contentpick a username

6-month history of exertional chest pain that is relieved by rest = stable angina. Per FA2019, pg. 301--stable angina is usually secondary to atherosclerosis with more than 70% occlusion.

Contrary to what you might think (or at least this is doublethink for me!), plaques that occlude a larger percentage of the lumen are usually older and more stable (i.e. calcified) and this makes them less dangerous. These larger, older occlusions usually have a well-developed fibrous cap that makes them less likely to rupture and cause unstable angina/NSTEMI or STEMI.

B/c this guy has had symptoms that are not increasing in intensity over the past 6 months, he likely has a calcified, lg. plaque.

get full access to all contentpick a username
jdc_md  nice job, further adding NSTEMI is caused by less than 100% obstruction. STEMI= 100% occlusion. For stable angina to present typically you would need at least 70% occlusion for symptoms to emerge. +1



Must-See Comments from nbme17

cassdawg on Membrane lipid peroxidation
cassdawg on Haemophilus influenzae type b
cassdawg on Pelvic Splanchnic
cassdawg on Actinic keratosis
cassdawg on Early septic shock
cassdawg on Epinephrine
flapjacks on Placebo effect
cassdawg on 0.9% Saline
waitingonprometric on Tubular adenoma
bingcentipede on Surface kappa:surface lambda ratio
cassdawg on Free T4
tinyhorse on 25%
cassdawg on Absence of functional LDL receptors in ...
bingcentipede on Residual volume: โ†‘; Arterial PO2: โ†“; ...

search for anything NEW!