11-06-2014, 04:14 PM
NBME 3 Q.
In a newborn, which of the following mechanisms increases the left atrial pressure above the right atrial pressure?
A-Closure of the ductus arteriosus
B-Closure of the ductus venosus
C-Decreased resistance to left ventricular output
D-Increased thickness of right ventricular wall
E-Decreased pulmonary vascular resistance
In a newborn, which of the following mechanisms increases the left atrial pressure above the right atrial pressure?
A-Closure of the ductus arteriosus
B-Closure of the ductus venosus
C-Decreased resistance to left ventricular output
D-Increased thickness of right ventricular wall
E-Decreased pulmonary vascular resistance