Post-operative nausea and vomiting following orbital hydroxyapatite implant surgery.

Fifty-five consecutive patients undergoing a short-stay ophthalmic operation (orbital hydroxyapatite implantation) were recruited over 1 year to assess the frequency and duration of post-operative nausea and vomiting over 7 days. The incidence of nausea and vomiting in hospital was recorded. Patients scored their nausea and vomiting four times daily at home. By the end of the first day after surgery, 31 (75%) patients had experienced mild to severe nausea. Eighteen (38%) patients became nauseated on five or more occasions. Nineteen (35%) patients had vomited by the end of the first day after surgery and, over 7 days, 24 (43%) patients had vomited on one or more occasion. Three patients reported that they had vomited during the journey home. Vomiting was not correlated with pain or a past history of post-operative nausea and vomiting. However, there was a statistically significant correlation between nausea and pain. The high incidence of nausea and vomiting observed in this study appears to provide additional evidence of an oculo-emetic reflex. The timing of discharge and appropriate patient education are discussed.