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Positive inotropes are used to support cardiac function in conditions such as decompensated congestive heart failure, cardiogenic shock, septic shock, myocardial infarction, cardiomyopathy, etc. [10] Examples of positive inotropic agents include: [citation needed] Digoxin; Berberine; Calcium; Calcium sensitisers Levosimendan [11] Catecholamines ...
Cardiotonic agents, also known as cardiac inotropes or stimulants, have a positive impact on the myocardium (muscular layer of the heart) by enhancing its contractility. . Unlike general inotropes, these agents exhibit a higher level of specificity as they selectively target the myocar
They are a class of sympathomimetic agents, each acting upon the beta adrenoceptors. [2] In general, pure beta-adrenergic agonists have the opposite function of beta blockers : beta-adrenoreceptor agonist ligands mimic the actions of both epinephrine - and norepinephrine - signaling, in the heart and lungs, and in smooth muscle tissue ...
A "heterocycle-phenyl-imidazole" (H-P-I) pattern has been considered to be necessary for positive inotropic activity in cardiac muscle and many second generation inhibitors fit this pattern. [6] The heterocycle region: Within each heterocycle there is the presence of a dipole and an adjacent acid proton (an amide function).
Pages in category "Inotropic agents" The following 19 pages are in this category, out of 19 total. This list may not reflect recent changes. ...
A cardiac stimulant is a drug which acts as a stimulant of the heart – e.g., via positive chronotropic action (increased heart rate) and/or inotropic action (increased myocardial contractility). They increase cardiac output (the amount of blood pumped by the heart over time).
Lusitropy or lucitropy is the rate of myocardial relaxation. The increase in cytosolic calcium of cardiomyocytes via increased uptake leads to increased myocardial contractility (positive inotropic effect), but the myocardial relaxation, or lusitropy, decreases.
The positive inotropic effect of amrinone is mediated by the selective enhancement of high-gain CICR, which contributes to the contraction of myocytes by phosphorylation through cAMP dependent protein kinase A (PKA) and Ca 2+ calmodulin kinase pathways.