Differential cyanosis in infant show:( )
A. atrial septal defect
B. ventricular septal defect
C. patent ductus arteriosus
D. tetralogy of Fallot
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The time of observing PPD test result is:( )
A. in 12 hours
B. 12h-24h
C. 24h-48h
D. 48-72h
The main cause of death of infant tetany is:( )
A. brain edema
B. heart failure
C. laryngospasm
D. respiratory failure
Which is manifestation of osteoid tissue accumulation ?( )
A. Craniotabes
B. Harrison’groove
C. Genu varus
D. Enlargement of wrists
Synthesis of 1, 25-(OH)2D3 is finished in:( )
A. skin
B. skeleton
C. liver
D. kidney
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