What is a common antiadrenergic effect of antipsychotic medications that the nurse should inform a client about?

Antipsychotic medications often exhibit antiadrenergic properties, meaning they can block adrenergic receptors. A common effect of this action is decreased blood pressure, particularly orthostatic hypotension, which can occur when a person stands up from a sitting or lying position. This drop in blood pressure can lead to dizziness or fainting, hence it is pertinent for nurses to inform clients about this potential side effect. By understanding this effect, clients can be more cautious when changing positions and may take measures to mitigate these symptoms, such as rising slowly from a sitting position.

In contrast, cough suppression does not generally relate to the antiadrenergic effects of antipsychotics, and increased heart rate is typically associated with adrenergic stimulation rather than blockade. Constipation may occur as a side effect of some medications but is not directly linked to antiadrenergic properties in the same manner as decreased blood pressure.