Effect of Warm Bupivacaine on Subtenon Block.

Launched by MANSOURA UNIVERSITY · Jul 18, 2025

Keywords

ClinConnect Summary

This clinical trial is looking at whether warming a local anesthetic called bupivacaine can make eye numbing (called a sub-Tenon’s block) work better during cataract surgery. Normally, doctors use this numbing technique to help patients stay comfortable during the operation. The researchers want to see if warming the medicine to body temperature (about 37°C) can help it start working faster and last longer, making the surgery experience smoother.

People who might join this study are adults scheduled for cataract surgery on one eye, who are generally healthy or have stable medical conditions (based on certain health guidelines). Patients who have serious mental health issues, allergies to anesthetics, certain nerve problems, or bleeding risks won’t be able to join. If you take part, you will receive the usual numbing medicine, but it will be warmed up first, and the doctors will watch to see how well and how quickly it works. This study hasn’t started enrolling patients yet, but it aims to find ways to improve comfort and safety during cataract surgery.

Gender

ALL

Eligibility criteria

• Inclusion Criteria:
• • American Society of Anesthesiology (ASA) I, II or III patients.
• • Patients scheduled for elective unilateral cataract surgery.
• Exclusion Criteria:
• • Patient refusal to participate in the study.
• • Altered mental status or un-cooperative patients or psychiatric disorder.
• • History of anesthetic drug allergy.
• • Pre-existing progressive demyelinating neurologic pathology or neuromuscular disorders.
• • Any contraindications to block (as bleeding or coagulation diathesis).