Women's Health Weekly
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Cardiology
Response to orthostatic stress is investigated
August 4th, 2005
Recently, researchers from Dallas' Institute for Exercise and Environmental Medicine tested the hypothesis that women have blunted sympathetic neural responses to orthostatic stress compared with men, which may be elicited under hypovolemic conditions. They measured muscle sympathetic nerve activity (MSNA) and hemodynamics in 8 healthy young women and 7 men in supine position and during 6 minutes of 60 degrees head-up tilt (HUT) under normovolemic and hypovolemic conditions (randomly), with approximately 4-week interval. They induced "acute hypovolemia produced by diuretic (furosemide) administration approximately 2 hours before testing" and determined "orthostatic...
Source: Women's Health Weekly (2005-08-04)
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