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Subtenon Block Combined With General Anesthesia for Vitreoretinal Surgery

NCT02282774 · Status: COMPLETED · Phase: PHASE3 · Type: INTERVENTIONAL · Enrollment: 80

Last updated 2014-11-04

No results posted yet for this study

Summary

To evaluate the effects of subtenon block (SB) as an adjunct to general anaesthesia on postoperative pain, oculocardiac reflex and postoperative nausea and vomiting for vitreoretinal surgery.

Conditions

  • Subtenon Anesthesia

Interventions

DRUG

2% lidocaine and 0.5% bupivacaine

Under general anesthesia and the operating microscope, a Lieberman lid speculum was placed and the conjunctiva was cleaned with 4% povidone iodine solution. The surgeon then created a fornix-based incision through conjunctiva and tenon's tissue inferonasally midway between the insertions of the medial and inferior rectus muscles, with blunt Wescott scissors to expose the scleral surface before tunneling posteriorly with curved Stevens scissors to create a small channel to the posterior subtenon space. A blunt-tipped subtenon cannula was then inserted into the posterior subtenon space, 4mL of 2% lidocaine and 0.5% bupivacaine (50:50) mixture versus saline was introduced and the drug solution was injected slowly into the subtenon space. After administration of local anesthetic mixture, the eyelid was gently taped down, and no ocular massage was performed

DRUG

Sham subtenon block

Sponsors & Collaborators

  • King Saud University

    lead OTHER

Principal Investigators

  • Marwan Abouammoh, MD · King Saud University

Study Design

Allocation
RANDOMIZED
Purpose
SUPPORTIVE_CARE
Masking
DOUBLE
Model
PARALLEL

Eligibility

Min Age
40 Years
Max Age
90 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2013-12-31
Primary Completion
2014-06-30

Countries

  • Saudi Arabia

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT02282774 on ClinicalTrials.gov