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Effect of Warm Bupivacaine on Subtenon Block.

NCT07085481 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 120

Last updated 2026-01-27

No results posted yet for this study

Summary

Sub-Tenon's anesthesia is now widely regarded as a preferred local anesthetic method for cataract surgery. Various techniques have been explored to prolong the duration, shorten onset time and improve the efficacy of local anesthetic nerve blocks with varying degrees of success. Warming local anesthetic may speed up its onset and prolong its effect by lowering its pKa.The aim of this study is to evaluate the effect of warming bupivacaine on the characteristics of a sub-Tenon's block in patients undergoing cataract surgery. It is hypothesized that warming bupivacaine 0.5% to 37°C will improve the characteristics of sub-Tenon's block. It will prolong the duration of sensory and motor block and accelerate the time onset time of sensory and motor block.

Conditions

  • Cataract

Interventions

DRUG

room temperature Bupivacaine

bupivacaine will be on a sterile shelf in the operating room at 23°C. The empty syringes and needles will be also on the same shelf before their use.

DRUG

warm Bupivacaine

bupivacaine will be warmed to 37◦C for 20 minutes. The empty syringes and needles, in their packaging, will be held at the same temperature for at least 2 hours before initiating the block.

Sponsors & Collaborators

  • Mansoura University

    lead OTHER

Principal Investigators

  • Amany H ELDeeb, MD · Faculty of Medicine, Mansoura University

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
75 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2025-10-01
Primary Completion
2025-12-30
Completion
2026-01-20

Countries

  • Egypt

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 NCT07085481 on ClinicalTrials.gov