Echocardiographic Dimensions in Man
نویسندگان
چکیده
Physiologic changes in the circulatory system caused by performing the Valsalva maneuver are blunted or absent in patients with congestive heart failure. Previously there has been no noninvasive method for examining cardiac chamber size during this maneuver. M-mode echocardiography was used to evaluate possible changes in cardiac chamber dimensions in 12 normal subjects (group I) and 15 patients with cardiovascular disease (group II). In group I, the left ventricular end-diastolic dimension decreased 11.2% (±1.5%) and the end-systolic dimension 9.5% (±1.32%), with a fall in stroke volume of 29%. The left atrial (LA) dimension decreased 30%.
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تاریخ انتشار 2005