Dobutamine is a beta1-adrenergic agonist that increases cardiac contractility (positive inotropic effect) and heart rate. It is commonly used intravenously in the management of acute heart fai

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12. Dobutamine is a $\beta_1$-adrenergic agonist that increases cardiac contractility (positive inotropic effect) and heart rate. It is commonly used intravenously in the management of acute heart failure and cardiogenic shock to improve cardiac output due to its rapid onset and short duration of action. Digoxin and Digitalis are cardiac glycosides used for chronic heart failure, not typically for emergency acute situations due to their slower onset. Adrenaline (epinephrine) is a potent vasoconstrictor and cardiac stimulant, primarily used in cardiac arrest or anaphylaxis, but not the primary drug for acute heart failure without arrest.
    • B. Dobutamine