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Cardiology A term male baby is found to be cyanotic shortly after birth and requires endotracheal intubation. On PE, his BP is 70/40 mm Hg (equal in all four extremities), pulse is 200/min, and respirations are 35/min. His precordium is dynamic, has a grade III systolic murmur, and a single S2. Chest radiography shows a normal heart size and increased pulmonary vascular markings. An arterial blood gas on an FiO2 of 100% shows pH 7.30; PaCO2, 50 mm Hg; PaO2, 40 mm Hg. Which of the following diagnoses is most consistent with these findings? 1-Pulmonary venous return anomaly 2-Atrial septal defect 3-Ventricular septal defect 4-Patent ductus arteriosus 5-Tetralogy of Fallot

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Subject: Tommy's Concepts

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Cardiology


A term male baby is found to be cyanotic shortly after birth and requires endotracheal intubation. On PE, his BP is 70/40 mm Hg (equal in all four extremities), pulse is 200/min, and respirations are 35/min. His precordium is dynamic, has a grade III systolic murmur, and a single S2. Chest radiography shows a normal heart size and increased pulmonary vascular markings. An arterial blood gas on an FiO2 of 100% shows pH 7.30; PaCO2, 50 mm Hg; PaO2, 40 mm Hg. Which of the following diagnoses is most consistent with these findings?
1-Pulmonary venous return anomaly
2-Atrial septal defect
3-Ventricular septal defect
4-Patent ductus arteriosus
5-Tetralogy of Fallot

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