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This is a report of the first 2 annual summaries of cardiac surgery performed in 21 units throughout the Federal Republic of Germany during 1978 and 1979. Including hospital mortality rates of the more conventional cardiac procedures, this register demonstrates development in and emphasis on cardiac surgery throughout the country over the years as well as it enables each cardiac surgeon to compare the work of his unit with that of other by giving a nationwide standard.

Summary:The ability of two-dimensional echocardiography (2DE) to quantitate the atrial septal defect size and left-to-right shunt magnitude was examined in 75 adult patients with simple ostium secundum atrial septal defect (ASD) with left-to-right shunts of 19-92% of systemic flow as determined by oximetry. The ASD was visualized in 7 1 of 75 (95 %) patients utilizing subcostal 2DE, and the end-systolic atrial septal defect diameters in subcostal 2DE (ASDe) were measured. The maximal diameters of ASD measured during operation (ASDop) were obtained in 45 of these patients, who then underwent surgical ASD repair. The correlation between ASDe and ASDop was high (r=0.91, p2.0 cm and RVD/LVD > 1.1 had a left-to-right shunt > 40%. In conclusion: (1) ostium secundum atrial septal defect size can be reliably

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