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8200 Medicine

A 22-year-old woman is evaluated in the emergency department because of symptoms of prolonged palpitations. She complains of no associated chest discomfort, shortness of breath, or lightheadedness. The palpitations have occurred twice before, but they always stopped spontaneously after 5 minutes, and she cannot associate them with any triggers. The past health history is negative and she is not on any medications.On physical examination, the blood pressure is 110/70 mm Hg, heart rate is 160/min and regular. The heart and lung examinations are normal, and the ECG is shown in Figure below. The heart rate abruptly changes to 72/min after applying carotid sinus pressure. Which of the following is the most likely diagnosis?

Asinus tachycardia
Bparoxysmal atrial fibrillation
Cparoxysmal atrial flutter
Dparoxysmal supraventricular tachycardia (PSVT)
Medicine
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8203 Medicine

A 20 year old female was diagnosed with acute myeloid leukaemia & underwent allogenic stem cell transplantation a year ago. In her follow up visit, she has manifestations of chronic graft-versus-host disease but otherwise is doing well & has no evidence of recurrence. Which of the following vaccines should not be administered to this patient at this point of time?

ADiphtheria-tetanus
B23-Valent pneumococcal polysaccharide
CMeasles, mumps, and rubella
DPoliomyelitis injection
Medicine
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