Today we’ll be covering Cyanotic Congenital Heart Disease (CHD), going along with this month’s theme, Cardiology. If you haven’t listened to our podcast before, each week we have a case-based discussion about a medical topic to help you study for the pediatric medicine board exam. Episodes are released every weekend, and the case is then reviewed and reinforced on social media throughout the week.
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A mother with scant prenatal care gives birth. Almost immediately following delivery, the infant is cyanotic. An ABG is obtained, and the PaO2 is 35mmHg. The infant is exposed to 100% FiO2 for 10 minutes, and a repeat ABG is obtained. The PaO2 remains at 35mmHg. A chest x-ray is obtained and demonstrates an “egg on a string” appearance. An echocardiogram confirms the diagnosis, and the patient is taken emergently for an atrial balloon septostomy until definitive surgical correction can be prepared. What is the most likely underlying lesion/lesions?
- A VSD, an overriding aorta, right ventricular outflow obstruction, and right ventricular hypertrophy
- Parallel pulmonary and systemic circulation
- A common truncal outflow tract and truncal valve
- Abnormal return of the pulmonary veins
- Absence of the tricuspid valve
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Intro/Outro- Hotshot by Scott Holmes
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