Property:AnswerBExp
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Correct answer. Mitral valve prolapse is due to of myxomatous degeneration of the mitral valve leading to a floppy mitral valve. +
Varicella zoster virus (VZV) causes chicken pox, in which the rash typically begins from the trunk and then spreads to the face and extremities. +
Incorrect- Lamotrigine is efficacious in bipolar depression and in the maintenance phase, but it is not particularly effective in treating the manic phase. +
Oxygen-induced constriction of the ductus arteriosus fails in preterm infants potentially due to immaturity (not maturity) of oxygen-sensing receptors. +
Incorrect- It is not an essential part of physical examination for a newly diagnosed patient with hypertension. +
Incorrect- Purpura, arthritis and abdominal pain are known as the "classic triad" of Henoch–Schönlein purpura. But finding of acute renal failure are more suggestive of HUS. +
Incorrect- This newborn is showing signs of Down syndrome. High arched palates are associated with fragile X syndrome. +
Incorrect- Electrophysiologic studies would not play a role in the typical evaluation of aortic stenosis. +
P. multocida is reported to be resistant to dicloxacillin, cephalexin, and clindamycin; many strains are resistant to erythromycin. +
Although linezolid provides adequate coverage for staphylococcal species, it does not cover ''Salmonella'' species, which are highly likely in this case given the history of thalassemia and the culture results. +
Agents that lack anaerobic coverage as well as coverage against ''Eikenella corrodens'', ''Haemophilus'' species, and ''Staphylococcus aureus'' are not appropriate for prophylaxis. Dicloxacillin lacks ''Eikenella'' coverage. +
EDTA is a chelating agent for treating heavy metal poisoning. It is also an anticoagulant for keeping blood samples. +