A nurse instructs a patient taking a drug that inhibits the action of a monoamine oxidase (MAO) to avoid certain foods and drugs because of the risk of:
a. hypotensive shock.
b. hypertensive crisis.
c. cardiac dysrhythmia.
d. cardiogenic shock.
ANS: B
Patients taking MAOI-inhibiting drugs must be on a tyramine-free diet to prevent hypertensive crisis. In the presence of MAOIs, tyramine is not destroyed by the liver and, in high levels, produces intense vasoconstriction, resulting in elevated blood pressure.
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