Property:AnswerDExp
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<font color="red">'''Incorrect.'''</font>- MRI is highly sensitive detecting masses and fluid especially in soft tissues.It has highly sensitive in orbital lesions and brain however according to the clinical history it is not needed to be done in that case. +
<font color="red">'''Incorrect.'''</font>- Electrophysiologic tests usually allow confirmation of the diagnosis in patients who have seronegative myasthenia gravis.Repetitive nerve stimulation (RNS) studies and single-fiber electromyography (SFEMG) have a diagnostic sensitivity in generalized myasthenia of about 75 % and 95 % respectively. +
Incorrect. Doxycycline is used to treat chlamydiae, but is not as effective to treat e.coli which is the most common cause of simple cystitis. +
Incorrect
Anticoagulants can cause or worsen hemorrhage in patients with endocarditis but may be carefully administered when needed. +
Incorrect
Anticoagulants can cause or worsen hemorrhage in patients with endocarditis but may be carefully administered when needed. +
Incorrect
Intravenous penicillin G sodium is the recommended 1st line of therapy according to American Heart Association guidelines. +
Incorrect
According to AHA recommendations, a combination of gram positive and gram negative antibiotics (intravenous penicillin G sodium+ gentamicin sulfate), should be used in resistant viridans group streptococci. Ceftriaxone sodium alone does not provide the gram positive and negative selectivity and coverage required for resistant strains. +
Incorrect
Although rheumatoid factor may be elevated, the patient is already have the diagnostic criteria needed to establish infective endocarditis diagnosis. +
Incorrect
Central pontine myelinolysis is a potentially neurologic complication that can result from the treatment of hyponatremia, not hyponatremia itself. +
Correct
In asymptomatic euvolemic hyponatremia, fluid restriction (less than 1 to 1.5 L per day) is the mainstay of the treatment. +
Activated charcoal may be the correct answer if Tricyclic antidepressant were ingested within two hrs. Since the time of ingestion is not known it may be futile to start activated charcoal now. +
Foscarnet is the second drug of choice for treatment of CMV retinitis . Since steroids are not indicated in AIDS foscarnet is the correct answer. +
HAART can be added to foscarnet for the treatment of CMV retinitis with HIV. HAART is not used for the maintenance therapy of CMV Retinitis. +
Cutting down coffee slowly may prevent a headache that usually occurs due to caffeine withdrawal. However it has not effect on cluster headache. +