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Positive Inotropy

Meaning

Positive Inotropy is a cardiovascular term referring to an increase in the force or energy of muscular contraction, specifically within the myocardium, or heart muscle. A positive inotropic agent enhances the heart’s contractility, allowing it to eject a greater volume of blood with each beat, thereby increasing the stroke volume and overall cardiac output. This physiological effect is clinically relevant for maintaining efficient systemic circulation, which is essential for optimal delivery of oxygen, nutrients, and circulating hormones to all peripheral tissues and endocrine glands. It is a critical factor in systemic vitality and physical performance.