1128 Final Preload and Afterload quiz

What conditions below can result in an increased cardiac afterload? Select all that apply: A. Vasoconstriction B. Aortic stenosis C. Vasodilation D. Dehydration E. Pulmonary Hypertension

A.Vasoconstriction B. Aortic stenosis E. Pulmonary Hypertension

__________ is the amount of blood pumped by the left ventricle with each beat. A. Cardiac output B. Preload C. Afterload D. Stroke volume

D. Stroke volume

What two factors are used to calculate cardiac output? Select all that apply: A. Heart rate B. Blood pressure C. Stroke volume D. Mean arterial pressure

A. Heart rate C. Stroke volume

A patient has a blood pressure of 220/140. The physician prescribes a vasodilator. This medication will? A. Decrease the patient's blood pressure and increase cardiac afterload B. Decrease the patient's blood pressure and decrease cardiac afterload C. Decrease the patient's blood pressure and increase cardiac preload D. Increase the patient's blood pressure but decrease cardiac output.

B. Decrease the patient's blood pressure and decrease cardiac afterload

Stroke volume plays an important part in cardiac output. Select all the factors below that influence stroke volume: A. Heart rate B. Preload C. Contractility D. Afterload E. Blood pressure

B. Preload C. Contractility D. Afterload

Which statement below best describes the term cardiac preload? A.The pressure the ventricles stretch at the end of systole. B. The amount the ventricles stretch at the end of diastole. C. The pressure the ventricles must work against to pump blood out of the heart. D. The strength of the myocardial cells to shorten with each beat.

B. The amount the ventricles stretch at the end of diastole.

A patient with hypovolemic shock is given IV fluids. IV fluids will help _________ cardiac output by: A. decrease; decreasing preload B. increase, increasing preload C. increase, decreasing afterload D. decrease, increasing contractility

B. increase, increasing preload

Which treatments below would decrease cardiac preload? Select all that apply: A. IV fluid bolus B. Norepinephrine C. Nitroglycerin D. Furosemide

C. Nitroglycerin D. Furosemide

Select the statement below that best describes cardiac afterload: A.It's the volume amount that fills the ventricles at the end of diastole. B. It's the volume the ventricles must work against to pump blood out of the body. C. It's the amount of blood the left ventricle pumps per beat. D. It's the pressure the ventricles must work against to open the semilunar valves so blood can be pumped out of the heart.

D. It's the pressure the ventricles must work against to open the semilunar valves so blood can be pumped out of the heart.

True or False: Pulmonary and systemic vascular resistance both play a role with influencing cardiac afterload.

True