Deterioration of Left Ventricular Chamber Performance After Bed Rest
نویسندگان
چکیده
منابع مشابه
Deterioration of left ventricular chamber performance after bed rest.
Performance After Bed Rest To the Editor: Perhonen et al1 estimate changes in the left ventricular (LV) diastolic rest volume before and after bed rest. By definition, diastolic rest volume is that volume which exists at zero transmural LV diastolic pressure (LVDPtm). Although they acknowledge the potential role of pericardial constraint in their discussion, they ignore this effect by assuming ...
متن کاملDeterioration of left ventricular chamber performance after bed rest : "cardiovascular deconditioning" or hypovolemia?
BACKGROUND Orthostatic intolerance after bed rest is characterized by hypovolemia and an excessive reduction in stroke volume (SV) in the upright position. We studied whether the reduction in SV is due to a specific adaptation of the heart to head-down tilt bed rest (HDTBR) or acute hypovolemia alone. METHODS AND RESULTS We constructed left ventricular (LV) pressure-volume curves from pulmona...
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Short periods of weightlessness are associated with reduced stroke volume and left ventricular (LV) mass that appear rapidly and are thought to be largely dependent on plasma volume. The magnitude of these cardiac adaptations are even greater after prolonged periods of simulated weightlessness, but the time course during and the recovery from bed rest has not been previously described. We colle...
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ژورنال
عنوان ژورنال: Circulation
سال: 2001
ISSN: 0009-7322,1524-4539
DOI: 10.1161/circ.104.25.e158