Question 1

Which pharmacologic agent should be administered to a patient with abnormally low vascular resistance?

Accepted Answer

Abnormally low SVR and SVRI are caused by excessive vasodilation. The resulting fall in blood pressure leads to underperfused and underoxygenated tissues. This may decrease coronary perfusion and cause myocardial ischemia, reducing the cardiac output. In this case, vasopressor drugs are needed to induce vasoconstriction.

Question 2

How soon after coronary artery occlusion should fibrinolytics be administered to improve survival?

Accepted Answer

Drugs that dissolve blood clots (fibrinolytic therapy) improve the survival of patients suffering acute coronary artery occlusion, especially if the drug is given within 2 hours of the occlusion.

Question 3

A PCWP of 25 mm Hg and a CI of 1.5 L/min/m² is consistent with which of the following conditions?

Accepted Answer

A PCWP of 25 mm Hg and a CI of 1.5 L/min/m² is consistent with left ventricular pumping failure.

Question 4

What is a major concern in the administration of inotropic drugs for myocardial infarction?

Accepted Answer

A major concern in administration of inotropic drugs is that these agents may worsen myocardial ischemia by increasing myocardial work and oxygen demand.

Quiz 20: Control of Cardiac Output and Hemodynamic

Which pharmacologic agent should be administered to a patient with abnormally low vascular resistance?

How soon after coronary artery occlusion should fibrinolytics be administered to improve survival?

A PCWP of 25 mm Hg and a CI of 1.5 L/min/m² is consistent with which of the following conditions?

What is a major concern in the administration of inotropic drugs for myocardial infarction?