临床医学专业儿科新生儿与新生儿疾病习题1
题目内容

A 2-hour-old full-term newborn infant is noted to be having episodes of cyanosis and apnea,which are worse when he is feeded but are better when he is stimulated and cries.The most important next step to quickly establish the diagnosis is(    )

2020-11-13

A.Echocardiogram

B.Ventilation perfusion scan

C.Passage of catheter into nose

D.Hemoglobin electrophoresis

E.Bronchoscopic evaluation of palate and larynx

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