Peribulbar Block Versus Subtenon's Injection in Redo Vitreoretinal Surgery

Not Applicable

Recruiting

• Conditions: Analgesia
• Interventions: Procedure: peribulbar block versus subtenon's block

• Registration Number: NCT04978415
• Lead Sponsor: Abeer Samir Salem

Brief Summary

To compare the efficacy and efficiency of peribulbar block versus sub-Tenon's capsule injection of local anesthetic in redo vitreoretinal surgery

Detailed Description

Sixty patients undergoing vitreoretinal surgery were randomized to receive either peribulbar or sub-Tenon's capsule injection of 8 ml of a 20:80 mixture of 2% lidocaine and 0.5% bupivacaine with 60 IU hyalouronic acid.

The primary outcome measured was intraoperative eye pain, which was rated by patients in both groups using an 11-point (0-10) numerical visual analogue scale immediately after.

The surgeons indicated whether they perceived patient discomfort during 4 different stages of the operation: opening of the conjunctiva, vitrectomy (if performed), placement of scleral buckle (if performed) or using the laser probe, and closing of the conjunctiva.

The need for supplemental local anesthesia, and use of IV sedation for additional pain control intraoperatively were compared between the two groups.

Study Timeline

• Study First Submitted: 2021-07-02
• Study First Submitted QC: 2021-07-25
• Study First Posted: 2021-07-27
• Study Start: 2021-10-01
• Status Verified: 2022-09
• Last Update Submitted: 2022-09-10
• Last Update Posted: 2022-09-13
• Primary Completion: 2022-11-30
• Study Completion: 2022-11-30

Recruitment & Eligibility

• Status: RECRUITING
• Sex: All
• Target Recruitment: 60

Inclusion Criteria

• age between 18 and 80

Exclusion Criteria

• Uncooperative patients
• Bleeding disorders
• High axial length (30mm) with previous buckle surgery

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SEQUENTIAL

Arm && Interventions

Group	Intervention	Description
subtenon's block	peribulbar block versus subtenon's block	we use the subtenon cannula to inject the local anesthetic mixture
peribulbar block	peribulbar block versus subtenon's block	we use the usual 25G sharp needle to inject the local anesthetic mixture

Primary Outcome Measures

Name	Time	Method
intraoperative pain	during whole surgery duration (around 2 hours)	11 point verbal rating score from 0 to 10 where 0 is no pain and 10 is intolerable pain patient will be asked immediately after surgery about pain the need for intraoperative sedation will be recorded

Trial Locations

Locations (1)

Research Institute of Ophthalmology; 🇪🇬 Giza, Egypt