Final answer:
The medication used to treat hypotension due to right ventricular failure stemming from PE and that has an inotropic effect, causes dilation, and decreases afterload is dopamine.
Step-by-step explanation:
The medication used to treat hypotension resulting from right ventricular failure due to a pulmonary embolism (PE) that also possesses an inotropic effect, causes vasodilation, and decreases afterload is dopamine. Dopamine has positive inotropic effects that increase myocardial contractility, thereby helping improve cardiac output in cases of right ventricular failure. Additionally, it causes dilation of blood vessels, which leads to a decrease in afterload. It is typically administered via intravenous infusion under careful medical supervision. Unlike dopamine, nitroglycerin primarily functions as a vasodilator without significant inotropic effects. Furosemide is a diuretic, mainly used to reduce fluid overload, and epinephrine has vasoconstrictive properties rather than vasodilatory.
It is important to note that Beta blockers and calcium channel blockers are examples of negative inotropic agents that can decrease cardiac output by reducing the strength of heart muscle contraction, which can worsen hypotension in acute right heart failure.