Particularly useful for patients undergoing these procedures, with a history of nausea, vomiting or motion sickness, or obese patients: opthalmological surgery, laproscopic surgery or gynecologic procedures
If not desirable for preanesthetic medication, drugs may be administered IV at the conclusion of surgery.
Some drug options
Low doses; administered usually IV and prevents postoperative nausea/vomiting
Some reports: droperidol better than either metoclopramide or domperidone
Droperidol reported useful as antiemetic for patients having cesarean section using spinal anesthesia
Low doses: not always effective but higher doses (at the end of surgery) may cause excessive recovery room sedation
Inconsistent, controversial for preoperative use
5-HT3 receptor antagonist (serotonin antagonist)
Administration: IV, 4-8 mg (adult) before induction: highly efficacious in preventing postoperative nausea/vomiting
Should be used selectively
Phenothiazines (e.g.,prochlorperazine); hydroxyzine;diphenidol
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