This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Pharmacology
Dobutamine is preferred over Dopamine in cardiogenic shock because of its effects related to 
Select and explain. 
A. Better cardiac stimulation, B. Less peripheral Vasoconstriction, C. Lower risk of cardiac Arrythymia, D. More CNs stimulation
B: Less peripheral Vasoconstriction
Answer: B: Less peripheral Vasoconstriction 
Explanation: Dobutamine is a catecholamine with b-1 and b-2 adrenergic agonist propeies which help improve myocardial contractility. In patients with cardiogenic shock due to decompensated hea failure,dobutamine decreases left ventricular end-diastolic pressure and raises blood pressure by increasing cardiac output. Refer kDT 7/e p 134