Cardiac stroke volume predicts progressive central hypovolemia by three different non‐invasive methods
نویسندگان
چکیده
منابع مشابه
Arterial pulse pressure and its association with reduced stroke volume during progressive central hypovolemia.
BACKGROUND The reduction of stroke volume (SV) during hemorrhage reflects the degree of blood loss, but accurate assessment of SV in bleeding patients in the field currently is not possible. In a previous pilot study, we reported that arterial pulse pressure and estimated sympathetic nerve activity (SNA) in trauma patients who died of hemorrhagic injuries was significantly lower than that obser...
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We analyzed the heartbeat time series of 12 human subjects exposed to progressive central hypovolemia with lower body negative pressure. Two data processing techniques based on wavelet transforms were used to determine the change in the non-stationary nature of the time series with changing negative pressure. Our results suggest that autonomic neural mechanisms driving cardiac interbeat interva...
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During normothermia, a reduction in near-infrared spectroscopy (NIRS)-derived tissue oxygen saturation (So2) is an indicator of central hypovolemia. Hyperthermia increases skin blood flow and reduces tolerance to central hypovolemia, both of which may alter the interpretation of tissue So2 during central hypovolemia. This study tested the hypothesis that maximal reductions in tissue So2 would b...
متن کاملTissue oxygen saturation during hyperthermic progressive central 1 hypovolemia
3 4 Zachary J. Schlader, Eric Rivas, Babs R. Soller, Victor A. Convertino, Craig G. Crandall 5 6 1 Institute for Exercise and Environmental Medicine, Texas Health Presbyterian Hospital of Dallas, TX, 7 USA and the University of Texas Southwestern Medical Center, Dallas, TX, USA; 8 2 Department of Kinesiology, Texas Woman’s University, Denton, TX, USA; 9 3 Reflectance Medical Inc., Westborough, ...
متن کاملBreathing through an inspiratory threshold device improves stroke volume during central hypovolemia in humans.
Inspiratory resistance induced by breathing through an impedance threshold device (ITD) reduces intrathoracic pressure and increases stroke volume (SV) in supine normovolemic humans. We hypothesized that breathing through an ITD would also be associated with a protection of SV and a subsequent increase in the tolerance to progressive central hypovolemia. Eight volunteers (5 men, 3 women) were i...
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ژورنال
عنوان ژورنال: The FASEB Journal
سال: 2013
ISSN: 0892-6638,1530-6860
DOI: 10.1096/fasebj.27.1_supplement.1193.1