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Stroke volume equation for impedance cardiography [PDF]
Medical & Biological Engineering & Computing, 2005 The study's goal was to determine if cardiac output (CO), obtained by impedance cardiography (ICG), would be improved by a new equation N, implementing a square root transformation for dZ/dtmax/Z0, and a variable magnitude, mass-based volume conductor Vc.
Donald P. Bernstein, Harry J. M. Lemmens
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Exercise stroke volume relative to plasma-volume expansion
Journal of Applied Physiology, 1988The effects of plasma-volume (PV) expansion on stroke volume (SV) (CO2 rebreathing) during submaximal exercise were determined. Intravenous infusion of 403 +/- 21 ml of a 6% dextran solution before exercise in the upright position increased SV 11% (i.e., 130 +/- 6 to 144 +/- 5 ml; P less than 0.05) in untrained males (n = 7). Further PV expansion (i.e.
M. K. Hopper +2 more
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Hospital volume and stroke outcome [PDF]
Neurology, 2007 Although hospital-outcome relationships have been explored for a variety of procedures and interventions, little is known about the association between annual stroke admission volumes and stroke mortality. Our aim was to determine whether facility type and hospital volume was associated with stroke mortality.All hospital admissions for ischemic stroke ...
G, Saposnik +5 more
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Anaesthesia, 2014
Current guidelines for intra‐operative fluid management recommend the use of increments in stroke volume following intravenous fluid bolus administration as a guide to subsequent fluid therapy.
G. Godfrey, S. Dubrey, J. Handy
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Current guidelines for intra‐operative fluid management recommend the use of increments in stroke volume following intravenous fluid bolus administration as a guide to subsequent fluid therapy.
G. Godfrey, S. Dubrey, J. Handy
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Stroke volume optimisation: is the fairy tale over?
Anaesthesia, 2014Advanced haemodynamic monitoring is espoused as a means to achieve optimisation of cardiac stroke volume during surgery. It is believed that individuals are ‘normovolaemic’ when their stroke volume is at the plateau of the Frank-Starling curve in the ...
G. Minto, R. Struthers
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Nongeometric Doppler stroke volume determination
The American Journal of Cardiology, 1989Abstract Accurate noninvasive measurement of cardiac output is a long-sought goal with obvious advantages. Numerous methods have yielded varying success. Recent Doppler echocardiographic studies have produced promising results. 1,2 These studies depend on geometric measurements, that is, the cross-sectional flow area of a valve or vessel.
Hitoshi Koito, David H. Spodick
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Measurement of stroke volume with impedance cardiography
Clinical Physiology, 1982Summary. Simultaneous determination of stroke volume with impedance cardiography and the dye dilution technique was compared in 11 healthy men before and after exercise. The correlation coefficient for all measurements was 0·82. Mean stroke volume determined by impedance cardiography was significantly (P<0·001) lower than mean stroke volume ...
Torsten Olsson +3 more
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An evaluation of computed stroke volume in man
American Heart Journal, 1966Abstract Data for validation in man of a method for determining continuous cardiac output are presented. Seventy-three points of comparison between a Fick or dye-dilution value and a value computed from the pressure pulse in the ascending aorta give a correlation coefficient of 0.90.
William B. Jones +2 more
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Acta Anaesthesiologica Scandinavica, 2013
To determine the volumes required for stable haemodynamics and possible effects on the coagulation, we studied stroke volume (SV)‐directed administration of hydroxyethyl starch (HES 130 kDa/0.4) and Ringer's acetate (RAC) in neurosurgical patients ...
Anja Carita Lindroos +5 more
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To determine the volumes required for stable haemodynamics and possible effects on the coagulation, we studied stroke volume (SV)‐directed administration of hydroxyethyl starch (HES 130 kDa/0.4) and Ringer's acetate (RAC) in neurosurgical patients ...
Anja Carita Lindroos +5 more
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Initial stroke volume is an independent outcome predictor
Nature Reviews Neurology, 2012A new study suggests that lesion volume assessed within 72 h of stroke onset is an important independent predictor of 90-day functional outcome and neurological recovery. If used in stroke trials, outcome models including stroke volume, age and NIH Stroke Scale scores could increase power for detecting treatment effect.
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