NCT02386059

Prevention of Postoperative Nausea and Vomiting in Patients Undergoing Vitrectomy Under Local Anesthesia

A Multicenter Randomized Trial to Evaluate the Efficacy and Safety of Three Different Prophylactic Treatments of Postoperative Nausea and Vomiting in Patients Undergoing Vitrectomy Under Local Anesthesia

• Status: Unknown
• Phase: Phase 4
• Study type: Interventional
• Enrollment: 1,200 (estimated)
• Sponsor: University of Catania · Academic / Other
• Sex: All
• Age: 18 Years – 85 Years
• Healthy volunteers: Not accepted

Summary

Vitreoretinal surgery is associated with a considerable incidence of postoperative nausea and vomiting (PONV), which is reported to be as high as 60%. Reasons for this high incidence may be the long duration of surgery and anesthesia and the high degree of manipulation of the eye. Postoperative vomiting after vitrectomy is an important risk factor for the onset of several complications, such as suprachoroidal hemorrhage, with disastrous visual consequences. To date there is no evidence as to the possible protective effect of anti-emetic therapy with regard to interventions of vitrectomy performed under local anesthesia. In this prospective, randomized, multicenter, double blind study, we evaluated the efficacy of Ondansetron alone, Dexamethasone alone and in combination in controlling nausea and vomiting in patients undergoing vitrectomy under local anesthesia.

Detailed description

Patients were randomly stratified to receive 1 of 4 prophylactic antiemetic treatments (3 pharmaceutical treatment and 1 placebo) in a double-blind manner at the start of the surgery and 15 minutes before the end of surgery. The syringes were prepared by a third, neutral person not involved in the perioperative care of the patient, immediately before the start of anesthesia. All vitrectomy surgeries were performed, in each unit,under local anesthesia by a retrobulbar block. Each patients was observed and treated during a period of 24 hours after the surgery. For patients who have nausea and vomiting despite the antiemetic prophylaxis, will be given a rescue dose of 4 mg ondansetron IV.

Conditions

• Postoperative Nausea and Vomiting

Interventions

Type	Name	Description
DRUG	PLACEBO	received normal saline, intravenously
DRUG	Dexamethasone	4 mg, intravenously, at the start of surgery
DRUG	Ondansetron	4 mg, intravenously, 15 minutes before the end of surgery.
DRUG	Dexamethasone + Ondansetron	4 mg dexamethasone, intravenously at the start of surgery and 4 mg ondansetron intravenously 15 minutes before the end of surgery.

Timeline

• Start date: 2015-03-01
• Primary completion: 2015-08-01
• Completion: 2015-09-01
• First posted: 2015-03-11
• Last updated: 2015-03-11

Locations

4 sites across 1 country: Italy