cyanotic immediately after birth. - proteus

[ArchivalUser]

A newborn infant is found to be cyanotic immediately after birth. A cardiology work-up reveals an abnormal heart. The newborn's heart has a ventral septal defect with a single, large outflow tract that becomes the aorta and pulmonary arteries. This condition most likely resulted from which of the following?

A. Abnormal apoptosis
B. Abnormal fusion of the superior and inferior endocardial cushions
C. Abnormal fusion of the muscular and membranous ventricular septa
D. Abnormal neural crest cell migration
E. Maternal cocaine use
F. Abnormal mesodermal differentiation

[ArchivalUser]

BB?, but I am not in mood to answer your questions since you not give the answers from previous questions, which you posted two days ago....

[ArchivalUser]

d.

[ArchivalUser]

Is this VSD..so C

i second veroko.....

[ArchivalUser]

d

[ArchivalUser]

Choice (D) is the correct answer. The condition described is persistent truncus arteriosus, which is a congenital cyanotic heart condition. Persistent truncus arteriosus includes a large ventral septal defect and a single, large ventricular outflow tract that becomes the aorta and pulmonary arteries. The mixing of blood between the right and left ventricles results in right-to-left shunting and cyanosis. The condition is most likely caused by abnormal neural crest cell migration and malformation of the aorticopulmonary septum. If not treated surgically, infants usually die by the age of 2. The other choices are incorrect