Inotropic refers to which cardiac property?

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Prepare for the ACLS Cardiac Arrest Test. Use flashcards and multiple choice questions; each detail includes hints and explanations. Get ready to excel!

Multiple Choice

Inotropic refers to which cardiac property?

Explanation:
The concept tested is the force of the heart’s contraction. Inotropic describes contractility—the strength of the myocardium’s squeeze during systole at a given preload. This is different from heart rate (chronotropic), which is about how fast the heart beats, or from conduction velocity (dromotropic) and rhythm regularity. Clinically, positive inotropes increase contractility to boost stroke volume and cardiac output, while negative inotropes decrease it. So the property described by inotropic is the force of contraction.

The concept tested is the force of the heart’s contraction. Inotropic describes contractility—the strength of the myocardium’s squeeze during systole at a given preload. This is different from heart rate (chronotropic), which is about how fast the heart beats, or from conduction velocity (dromotropic) and rhythm regularity. Clinically, positive inotropes increase contractility to boost stroke volume and cardiac output, while negative inotropes decrease it. So the property described by inotropic is the force of contraction.

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