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5743 Pediatrics

A 4-year-old girl is brought to the pediatrician’s office. Her father reports that she suddenly became pale and stopped running while he had been playfully chasing her and her pet Chihuahua. After 30 minutes, she was no longer pale and wanted to resume the game. She has never had a previous episode and has never been cyanotic. Her physical examination was normal, as were her chest x-ray and echocardiogram. An ECG showed the pattern seen on the next page, which indicates which of the following?

AParoxysmal ventricular tachycardia
BParoxysmal supraventricular tachycardia
CWolff-Parkinson-White syndrome
DStokes-Adams pattern
Pediatrics
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5747 Pediatrics

For the below set of immunologic abnormalities, select the most likely clinical presentation.Serum IgGSerum IgASerum IgMT-cell functionParathyroid functionNormalHighLowDecreasedNormal

AA 5-year-old boy who, after 3 months of age, developed recurrent otitis media, pneumonia, diarrhea, and sinusitis, often with simultaneous infections at two or more disparate sites
BA distinctive-appearing 8-month-old boy with an interrupted aortic arch, hypocalcemia, and cleft palate
CA 1-year-old boy with severe eczema, recurrent middle-ear infections, lymphopenia, and thrombocytopenia
DA 9-year-old boy with an eczema-like rash and recurrent severe staphylococcal infections
Pediatrics
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