Myocardial contractility
Myocardial contractility is preserved early but reduced late after ovariectomy in young female rats
... and contractility, although early effects of OSHs deprivation on myocardial contractility have not yet been ...ventricular contractility in rats after ...and contractility changes in ...
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Determinants of left ventricular ejection fraction and a novel method to improve its assessment of myocardial contractility
... of contractility index should be sensi- tive to changes in myocardial contractile state but indif- ferent to loading conditions ...upon myocardial contractility but also upon other ...
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Myocardial contractility in the echo lab: molecular, cellular and pathophysiological basis
... lated myocardial fiber by the maximal velocity of contrac- tion of unloaded muscle fiber (Vmax), to the in vivo beating ...ard) myocardial contractility at rest in the intact circula- tion and is ...
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Effects of experimental heart failure on the capacity of glucagon to augment myocardial contractility and activate adenyl cyclase
... Although glucagon exerts positive inotropic effects in patients with no or mild impairment of cardiac function, similar effects are not consistently observed in patients with chronic heart failure. Accordingly, the ...
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β3 adrenoceptor deficiency blocks nitric oxide–dependent inhibition of myocardial contractility
... of myocardial sys- tolic and diastolic performance were derived from pres- sure-volume data obtained both at steady state and dur- ing transient loading of the heart with direct occlusion of the abdominal ...
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Myocardial contractility in the stress echo lab: from pathophysiological toy to clinical tool
... of contractility, expressed in the isolated myocardial fiber by the maximal velocity of contraction of unloaded muscle fiber (Vmax), to the in vivo beating ...assessing myocardial ...
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Effects of Inspired Oxygen on Echocardiographic Assessment of Pulmonary Vascular Resistance and Myocardial Contractility in Bronchopulmonary Dysplasia
... Resistance and Myocardial Contractility in Bronchopulmonary Dysplasia Effects of Inspired Oxygen on Echocardiographic Assessment of Pulmonary Vascular. http://pediatrics.aappublications.[r] ...
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Elevated blood pressure and enhanced myocardial contractility in mice with severe IGF 1 deficiency
... experimental myocardial infarction in the rat produces hypertrophy of the noninfarcted myocytes with increased ventricular function in animals with large in- farcts (9); ventricular contractility is ...
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The Effects of Nitroglycerin on Coronary Collaterals and Myocardial Contractility
... Nitroglycerin (TNG) causes a prolonged dilatation of coronary collaterals. To demonstrate a functional significance of this dilatation we measured the effect of TNG on myocardial contractile force in dogs 2½-4 wk ...
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The effect of sulfonylurea drugs on rabbit myocardial contractility, canine purkinje fiber automaticity, and adenyl cyclase activity from rabbit and human hearts
... concentrations that are attained clinically, tolbutamide (10 mg/100 ml) increased contractility of driven rabbit atria to 124±5% of control, acetohexamide (3.9 mg/100 ml) to 140±5%, chlorpropamide (8.3 mg/100 ml) ...
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Role of nitric oxide in parasympathetic modulation of beta adrenergic myocardial contractility in normal dogs
... To assess whether cGMP could simulate the inhibitory effect of vagal nerve stimulation, 8-bromo-cGMP was infused after intracoronary atropine via the left coronary artery in two dogs dur[r] ...
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Contractile and hemodynamic forces coordinate Notch1b-mediated outflow tract valve formation
... and myocardial contraction ...than myocardial contractility, is considered to regulate the development of atrioventricular (AV) valves (6), whereas myocardial contractility was report- ...
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Uniqueness of local myocardial strain patterns with respect to activation time and contractility of the failing heart: a computational study
... Firstly, a global heart failure (HF) simulation was obtained by decreasing myocardial contractility (f,act) of the three ventricular walls to 50% of its normal value, so that LV ejection fraction was 30%. ...
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Carvedilol in hypertension treatment
... on myocardial contractility, vascular resistance (Man et al 1988), and carbohydrate and lipid metabolism (Sarafi dis and Bakris 2007), while newer agents with vasodilating properties, such as carvedilol and ...
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Transient left ventricular apical ballooning and exercise induced hypertension during treadmill exercise testing: is there a common hypersympathetic mechanism?
... Both of these cases suggest that actual, or relative, tran- sient hypertensive response during 'exercise' stress may give rise to altered myocardial contractility resulting in false positive results. ...
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Inhibitory Effect of Fentanyl on Phenylephrine Induced Contraction of the Rat Aorta
... 27 Previous studies have shown that fentanyl has no effect on myocardial contractility at a clinical dose and increases myocardial contractile force at supraclinical doses.28,29 Accordin[r] ...
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The Critical Assessment of the Experimental Techniques for Cardiac Performance
... mvocardial contractility is seen to occur (Mason et ...in contractility than peak dPfdt used SC paratci ...of myocardial contractility has been based on the way in which alterations of ...
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Platelet derived exosomes from septic shock patients induce myocardial dysfunction
... NO has been implicated for a long time in sepsis-induced myo- cardial dysfunction. Classic studies have linked cytokine pro- duction to cardiac dysfunction mediated by myocardial NOS [19,20]. One study reported ...
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... It is noteworthy that total peripheral resistance (indexed by the resistance of the vasculature to blood flow) and cardiac output directly affect blood pressure (Miller et al., 1987). Thus, it seems that although anger ...
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Application of peripheral-blood-derived endothelial progenitor cell for treating ischemia-reperfusion injury and infarction: a preclinical study in rat models
... min. Myocardial ischemia was confirmed by the ap- pearance of regional epicardial cyanosis over the myocar- dial surface and by ...and myocardial contractility were assessed as described ...
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