The administration of vasoconstrictor medication would most likely result in what outcome?

The administration of vasoconstrictor medication typically leads to increased systemic vascular resistance (SVR). Vasoconstrictors work by causing the smooth muscles in the blood vessels to contract, which narrows the lumen of the vessels. This constriction increases the resistance that the heart must overcome to pump blood, resulting in higher blood pressure and increased SVR.

In clinical practice, this effect is essential in situations where there is hypotension or shock, as it helps to elevate blood pressure and improve perfusion to vital organs. Vasoconstrictors are often used in emergency settings to manage conditions that result in low blood pressure, as their primary action is to counteract hypotension by increasing vascular resistance.

Hypotension refers to lower blood pressure and would be counterproductive when administering vasoconstrictors. Decreased PVR does not occur with the administration of these agents because their purpose is to increase vascular resistance. Cardiac vessel dilation would also be contrary to the action of vasoconstrictors, which focus on constriction rather than dilation.