Promethazine is effective when the patient demonstrates which finding?

Promethazine is effective when the patient demonstrates which finding?

• A. Decreased sedation
• B. Less anxiety
• C. Increases progress of labor
• D. No effect on labor progress

Answer: (B)

Promethazine acts as an antiemetic and a sedating antihistamine, so its useful effect in labor is the calming, anxiolytic and anti-nausea action. When the patient shows less anxiety after administration, that expected sedative effect is being achieved. It does not speed up labor, and it often causes drowsiness rather than reducing it, so decreased sedation wouldn’t indicate effectiveness. Therefore, the best demonstration of its effectiveness is reduced anxiety.

Promethazine acts as an antiemetic and a sedating antihistamine, so its useful effect in labor is the calming, anxiolytic and anti-nausea action. When the patient shows less anxiety after administration, that expected sedative effect is being achieved. It does not speed up labor, and it often causes drowsiness rather than reducing it, so decreased sedation wouldn’t indicate effectiveness. Therefore, the best demonstration of its effectiveness is reduced anxiety.