Final answer:
Dobutamine is administered to improve cardiac function in a patient with cardiogenic shock, as it is a positive inotropic agent that increases cardiac output.
Step-by-step explanation:
In a patient case of cardiogenic shock, which is the inability of the heart to maintain cardiac output, a medication that might be administered to improve cardiac function is Dobutamine. Dobutamine acts as a positive inotrope, which means it increases the force of the heart's contraction and improves cardiac output. Unlike nitroglycerin which is used in the immediate treatment of myocardial infarction (MI) due to its vasodilatory effects, or furosemide which is a diuretic, or insulin which is for glucose control, Dobutamine is specifically used to enhance cardiac contractility in cases of severe heart failure or cardiogenic shock.