Underlying etiology in this patient is renal failure (uremia). The heart cannot fill properly, preload decreases, hypotension and tachycardia ensue, fluid backup leads to elevated JVP. A – Electrical alternans on boards means a big pericardial effusion (and usually cardiac tamponade physiology).It’s given to at-risk Rh- moms at 28 weeks and at delivery. C – The purpose of Rhogam is to bind to and remove the RhD antigens so that the mother does not form an immune response against the antigen in the fetus’ blood.C – Acetylcholine increases after drug X, which is the same we’d expect if drug X were a cholinesterase inhibitor.A – Intermittent hyperbilirubinemia/jaundice in an otherwise healthy individual is typical of Gilbert’s syndrome, which is caused by the decreased activity of UDP glucuronosyltransferase.B – In addition to penicillin, the treatment paradigm for step viridans endocarditis also includes the aminoglycoside gentamicin, which binds to the 30S subunit and accelerates bacterial clearing/decreases treatment duration.The 20 sets, for example, differed by 36 questions (in case you were curious). The less similar 2019 set is still available here for those looking for more free questions, and even older sets are all listed here.
#Usmle practice test block 1 answers pdf
The 2020 set explanations and pdf are available here the comments on that post may be helpful if you have questions. The asterisks (*) signify a new question, of which there are only 2 (#24 and 53). This year’s set was updated in February 2021 (PDF here).
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