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While negative inotropism may precipitate or exacerbate heart failure in the short term, certain beta blockers (e.g. carvedilol, bisoprolol and metoprolol) have been believed to reduce long-term morbidity and mortality in congestive heart failure. [13] Examples of negative inotropic agents include: Beta blockers [14]
This effect is particularly well suited in the treatment of ventricular tachycardia as it slows the action potential propagation through the atria to the ventricles. Disopyramide does not act as a blocking agent for beta or alpha adrenergic receptors, but does have a significant negative inotropic effect on the ventricular myocardium. [8]
Therefore, the net effect is the interplay of direct and reflex actions. Class I agents have the most potent negative inotropic effect and may cause heart failure. Class II agents do not depress conduction or contractility. Class III agent has negligible inotropic effect and causes almost no reflex tachycardia.
Their inotropic properties make cardiactonic agents critical in addressing inadequate perfusion, and acute heart failure conditions including cardiogenic shock, as well as for long-term management of heart failure. These conditions arise when the heart's ability to meet the body's needs is compromised.
Sleep apnea is an under-recognized risk factor for heart failure. Uncontrolled sleep apnea may increase the risk of heart failure by up to 140%. [4] Weight reduction – through physical activity and dietary modification, as obesity is a risk factor for heart failure and left ventricular hypertrophy. Effective weight management has been shown ...
Because of the negative inotropic effects of flecainide, it should be used with caution in individuals with depressed ejection fraction, and may worsen congestive heart failure in these individuals. It should be avoided in people with ischaemic heart disease and the elderly.
The phenylalkylamine class of CCBs mainly affect the cells of the heart and have negative inotropic and negative chronotropic effects. The benzothiazepine class of CCBs combine effects of the other two classes. Because of the negative inotropic effects, the nondihydropyridine calcium channel blockers should be avoided (or used with caution) in ...
In clinical trials, a similar increase in heart rate was observed in both Cleviprex and comparator arms. Dihydropyridine calcium channel blockers can produce negative inotropic effects and exacerbate heart failure. Heart failure patients should be monitored carefully. Cleviprex gives no protection against the effects of abrupt beta-blocker ...
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