Normal left atrial function determined by 2-dimensional echocardiography
| Autor: | Nelson B. Schiller, Dennis Wahr, Jack M. Gutman, Yin Shi Wang |
|---|---|
| Rok vydání: | 1983 |
| Předmět: |
Adult
Male medicine.medical_specialty Cardiac Volume Left atrium Normal values Left atrial Reference Values Internal medicine medicine Left ventricular Stroke volume Humans cardiovascular diseases Aged business.industry Stroke Volume Stroke volume Middle Aged Atrial Function Myocardial Contraction 2 dimensional echocardiography medicine.anatomical_structure Ventricle Echocardiography cardiovascular system Cardiology Female Cardiology and Cardiovascular Medicine business |
| Zdroj: | The American journal of cardiology. 51(2) |
| ISSN: | 0002-9149 |
| Popis: | To obtain normal values for left atrial function noninvasively, volumes of the left atrium and ventricle were calculated in 52 volunteers by 2-dimensional echocardiography. A light pen digitizing and computation system, controlled by a microprocessor, was used to outline the left atrium and ventricle in orthogonal apical views. Then, to calculate end-systolic and end-diastolic atrial and ventricular volumes, a modified Simpson's rule formula was used. End-systolic left atrial volume (mean +/- standard deviation) was 37 +/- 11.7 ml or 21 +/- 6.6 ml/m2. The change in left atrial volume from end-systole to end-diastole was 24 +/- 7.6 ml or 13.5 +/- 4.3 ml/m2, which represented 37 +/- 12.9% of left ventricular stroke volume. The mean fractional emptying of the left atrium was 65 +/- 8.9% and the conduit volume was 41 +/- 14.0 ml or 23 +/- 7.9 ml/m2. These values are similar to those reported in studies in which left atrial function was calculated from contrast angiography. |
| Databáze: | OpenAIRE |
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