dp/dt
Arterial dP/dt max accurately reflects left ventricular contractility during shock when adequate vascular filling is achieved
... hemodynamic conditions such as endotoxin-induced shock and catecholamine infusion. Methods: Ventricular pressure-volume data obtained with a conductance catheter and invasive arterial pressure obtained with a ...
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Estimation of Vmax in auxotonic systoles from the rate of relative increase of isovolumic pressure: (dP/dt)kP
... (micromanometer) and its first derivative were used to calculate contractile element velocity (Vce) during the isovolumic period of auxotonic beats in anesthetized dogs. At 0.5-2.0 msec intervals of isovolumic systole, ...
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The effect of physical training upon the mechanical and metabolic performance of the rat heart
... Atrial pacing at more rapid rates caused greater differences in these functions, and left ventricular pressure and maximal rate of pressure rise dp/dt became higher in CH than in SH.. At[r] ...
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... After 2 hr of reperfusion, the snare was retightened and a fluorescent polymer microsphere was injected to distinguish the normal, non-ischemic region and the area at risk (AR). The hearts were removed from the ...
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Potent immunomodulation and angiogenic effects of mesenchymal stem cells versus cardiomyocytes derived from pluripotent stem cells for treatment of heart failure
... In this study, direct intramyocardial transplantation of hESC-CMs and iPSC-MSCs was performed after induc- tion of HF. At 8 weeks follow-up, we observed signifi- cant improvement in LV function as determined by ...
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Effects of Acute Increases in Left Ventricular Preload on Indices of Myocardial Function in Conscious, Unrestrained and Intact, Tranquilized Baboons
... LV dP/dt max and the maximum velocity of myocardial fiber shortening (LV dD/dt max ) did not ...LV dP/dt max and LV dD/dt max despite the increase in ...
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Evidence of Incomplete Left Ventricular Relaxation in the Dog: PREDICTION FROM THE TIME CONSTANT FOR ISOVOLUMIC PRESSURE FALL
... dimension values at the end of prolonged diastoles after interruption of pacing. For 167 beats during pacing under widely varying hemodynamic conditions, diastolic pressure- dimension values encountered this line ...
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Pharmacologic and Hemodynamic Influences on the Rate of Isovolumic Left Ventricular Relaxation in the Normal Conscious Dog
... [(+) dP/dt] by 1,275±227 (SE) mm Hg/s (P < 0.001) and dP/dt at an isopressure point of 35 mm Hg during isovolumic relaxation [(−) dP/dt 35 ] by 435±80 mm Hg/s (P < ...(−) ...
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The role of low pressure baroreceptors in reflex vasoconstrictor responses in man
... and dP/dt and significant increases in heart rate accompanied the further reductions in central venous pressure, forearm blood flow, and forearm vascular ...
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How to Identify Latent Systolic Dysfunction and Post Operative Risk in Patients with Mitral Incompetence and Normal Ejection Fraction?
... + dp/dt is estimated from MR jet as the rate of pressure rise from 1 to 3 m/sec) and short- ening assessed by GLPSS (this Doppler technology allowed measurement of LV systolic strain for the en- tire length ...
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Cardiac reserve mobilization trend during exercise and recovery after exercise
... ventricular dP/dt and ejection fraction (EF) in humans, and S1, corrected for S2, is decreased in patients with impaired LV systolic function [9]; ...
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In vivo and ex vivo effects of propofol on myocardial performance in rats with obstructive jaundice
... Background: Responsiveness of the “jaundiced heart” to propofol is not completely understood. The purpose of this study was to evaluate the effect of propofol on myocardial performance in rats with obstructive jaundice. ...
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IBVS Volume 6101
... In Figure 5, the (all CCD) ET differences are plotted for the time interval 1993-2013; the earlier photographic and visual timings are not plotted because the gaps impose an uncertainty as to the correct cycle count. ...
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Role of intact cardiac nerves and reflex mechanisms in desensitization to catecholamines in conscious dogs
... To study chronic catecholamine desensitization, mini-osmotic pumps were implanted subcutaneously to deliver NE, (0.5 micrograms/kg/min) or saline over 3-4 wk in dogs instrumented with left ventricular (LV) pressure ...
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Clinical review: Hemodynamic monitoring in the intensive care unit
... ventricular dp/dt max has been widely accepted as an index of the contractile performance of the left ...ventricular dp/dt max is a satisfac- tory index of ventricular ...
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The Neurogenic Vasoconstrictor Effect of Digitalis on Coronary Vascular Resistance
... = 5; HR, heart rate; MAP, mean aortic pressure; LV dp/dt, the peak first derivative of left ventricular pressure; LVEDP, left ventricular end-diastolic pressure... Neurogenic Vasoconstri[r] ...
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Comparison of Enoximone, Amrinone, or Levosimendan Enriched St. Thomas’ Hospital Cardioplegic Solutions Used for Myocardial Preservation in Isolated Guinea Pig Hearts
... A recent multicenter study clearly showed that enoxi- mone improves exercise capacity in patients with heart failure without increasing adverse events (8). In ischemic human hearts with significant left anterior ...
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Effects of Catecholamines, Exercise, and Nitroglycerin on the Normal and Ischemic Myocardium in Conscious Dogs
... shortening, dP/dt, dP/dt/P, arterial pressure, left circumflex coronary blood flow, and coronary vascular resistance were examined in healthy conscious dogs with normal coronary perfusion and ...
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Effect of inhibition of lipolysis on myocardial oxygen consumption in the presence of isoproterenol
... ventricular pressure (dP/dt), heart rate and cardiac output, augmentation of Vo 2 was larger before (on average 7.6 ml/min·100 g) than after inhibition of lipolysis either by antilipolytic drugs (on average ...
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An Erosion Aggressiveness Index (EAI) Based on Pressure Load Estimation Due to Bubble Collapse in Cavitating Flows Within the RANS Solvers
... Despite numerous research efforts, there is no reliable and widely accepted tool for the prediction of erosion prone material surfaces due to collapse of cavitation bubbles. In the present paper an Erosion Aggressiveness ...
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