The effect of supine rotation on left ventricular dimensions in man: A study using radio-opaque epicardial markers
✍ Scribed by Vine, Donald L. ;Todd, Edward P. ;Cole, James S. ;Zeok, John V.
- Publisher
- John Wiley and Sons
- Year
- 1979
- Tongue
- English
- Weight
- 385 KB
- Volume
- 5
- Category
- Article
- ISSN
- 0098-6569
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✦ Synopsis
It has been reported that patlent rotation into the left lateral decubitus position (30" rao) produces significant changes in the regression equations used for left ventricular volume determination and that normal values for echocardiographic left ventricular dimensions obtalned from supine patients differ from those obtained after rotation. The purpose of this study was to establish whether patient rotation is associated with changes in left ventricular size and systolic function. The distances between left ventricular epicardial markers attached at the time o f cardiac surgery were measured using biplane cineradiography in 14 patients in order to determine left ventricular dimensions before and after rotation. Supine eplcardial left ventricular dimensions were not significantly different from those obtained with the patient rotated 30" rao. These results suggest that reported changes in invaslve and noninvasive measurements of left ventricular function assoclated with patient rotation are not primarily due to changes in left ventricular size.