Property:AnswerCExp
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Incorrect- Although cannabis use is not infrequently associated with paranoia, it rarely displays frank psychosis. +
Agenesis refers to the failure of an organ to develop due to the absence of primordial tissue. +
Mumps virus causes mumps, which typically presents with no rash but with parotitis and/or meningitis (pancreatitis, orchitis/oophoritis in young adults). +
Incorrect- It is an appropriate treatment for mania but it may take several days to weeks before significant therapeutic effects are achieved. +
The ductus arteriosus is thought to derive from the embryonic left sixth (not fourth) aortic arch. +
The Golgi apparatus is involved in the addition of mannose-6-phosphate to specific lysosomal proteins. +
Incorrect- Evans syndrome is an autoimmune disease in which an individual's antibodies attack their own red blood cells and platelets. Both of these events may occur simultaneously or one may follow on from the other. But findings of gastroenteritis and acute renal failure are more suggestive of HUS. +
Incorrect- This newborn is showing signs of Down syndrome. Ambiguous genitalia are commonly seen in CAH. +
Incorrect- Exercise stress testing is relatively contraindicated in the setting of symptomatic aortic stenosis. +
P. multocida is reported to be resistant to dicloxacillin, cephalexin, and clindamycin; many strains are resistant to erythromycin. +
Although ampicillin 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. Erythromycin lacks coverage for all three. +
Methylene blue and ascorbic acid (Vitamin C) have the ability to convert ferric ion into ferrous ion in hemoglobin and restores its oxygen-binding capacity to the proper state. +
Transposition of the great vessels is caused by failure of aorticopulmonary septum to twist and is commonly present in children of diabetic mothers. +
<font color="red">'''Incorrect.'''</font> Bicarbonate therapy (e.g. 1 ampule (45mEq) infused over 5 minutes) is effective in cases of metabolic acidosis. The bicarbonate ion will stimulate an exchange of cellular H+ for Na+, thus leading to stimulation of the sodium-potassium ATPase. It will not prevent acutely the development of arrhythmias. +