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Digoxin is one of the oldest medications used in the field of cardiology. It works by increasing myocardial contractility, increasing stroke volume and blood pressure, reducing heart rate, and somewhat extending the time frame of the contraction. [5] Digoxin is taken by mouth or by injection into a vein. [4]
Kidney function gradually decreases as someone ages. The elderly are also likely to be underweight. In addition, these older people tend to be dehydrated and be taking other medications. These factors increase the likelihood of developing side effects of digoxin and digoxin toxicity. Often lowering the dose is considered by the prescriber. [6]
An antihypotensive, also known as vasopressor, is an agent that raises blood pressure by constricting blood vessels, thereby increasing systemic vascular resistance. This is different from inotropes which increase the force of cardiac contraction. Some substances do both (e.g. dopamine, dobutamine).
For example, the ingestion of digoxin leads to increased cardiac output and decreased heart rate without significant changes in blood pressure; this quality allows it to be widely used medicinally in the treatment of cardiac arrhythmias. [1]
Digoxin helps alleviate symptoms and reduce hospitalizations related to heart failure, but it does not offer any mortality-reducing benefits. [86] Digoxin may be considered in patients who remain symptomatic despite receiving treatment with a first-line combination of an ACE inhibitor (or ARNI ), a beta-blocker , and a mineralocorticoid ...
Chlorthalidone is the thiazide drug that is most strongly supported by the evidence as providing a mortality benefit; in the ALLHAT study, a chlorthalidone dose of 12.5 mg was used, with titration up to 25 mg for those subjects who did not achieve blood pressure control at 12.5 mg. Chlorthalidone has repeatedly been found to have a stronger ...
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The level of digoxin for treatment is typically 0.5-2 ng/mL. [8] Since this is a narrow therapeutic index, digoxin overdose can happen. A serum digoxin concentration of 0.5-0.9 ng/mL among those with heart failure is associated with reduced heart failure deaths and hospitalizations. [9]