Alpha blockade by beta-receptor antagonists results in decreased peripheral resistance, orthostatic hypotension, and:

A. thickening of the ventricular septum
B. increased tachyarrhythmias
C. vasodilation
D. vasoconstriction


c
Rationale: Alpha blockade by beta-receptor antagonists results in vasodilation, decreased peripheral resistance, and or-thostatic hypotension.

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