1. Cardiac catheterization in interatrial septal defect
- Author
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Willard J. Zinn, David C. Levinson, Robert W. Oblath, Richard S. Cosby, George C. Griffith, George Jacobson, and Sim P. Dimitroff
- Subjects
medicine.medical_specialty ,Cardiac Catheterization ,Cardiac cycle ,Vascular disease ,business.industry ,medicine.medical_treatment ,Right-to-left shunt ,Cardiovascular Abnormalities ,General Medicine ,medicine.disease ,Cardiovascular System ,Atrial septal defects ,Surgery ,Superior vena cava ,Internal medicine ,medicine.artery ,cardiovascular system ,medicine ,Cardiology ,cardiovascular diseases ,Differential diagnosis ,business ,Shunt (electrical) ,Cardiac catheterization - Abstract
1.1. Ten proven and seven presumptive cases with atrial septal defects have been presented. 2.2. The importance of catheterization of the left auricle is emphasized, together with the differential diagnosis of atrial septal defect from transposed pulmonary veins. 3.3. A rise of oxygen content in the right atrium in comparison to the oxygen content of the superior vena cava is not necessarily present in proven atrial septal defects. 4.4. The cause for cyanosis in atrial septal defect lies primarily in the presence of a right to left shunt. 5.5. The direction of shunt is determined by the pressure gradient between the atria during the cardiac cycle. 6.6. Pulmonary vascular disease may contribute to the pulmonary resistance but is not a significant factor in the production of cyanosis.
- Published
- 1953