Prospective Study to Compare Changes in Central Retinal Peak Systolic Flow Velocity and End Diastolic Flow Velocity in Patients Undergoing Cataract Surgery Using Retrobulbar Anesthesia and Deep Topical Anesthesia
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- Category: Vol. 84, December 2016
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Prospective Study to Compare Changes in Central Retinal Peak Systolic Flow Velocity and End Diastolic Flow Velocity in Patients Undergoing Cataract Surgery Using Retrobulbar Anesthesia and Deep Topical Anesthesia, MONA M. LOTFY, SALWA M. HEFNAWY, AMINA A. MOUSA, DALIA S. TAWFIK and NOHA A. OSAMA
Abstract
Background: Local or regional block is the preferred anesthetic technique for day case cataract surgery. Local anesthesia has been associated with ischemic complication such. Many factors may account for the dramatic reduction of pulsatile ocular blood flow after anesthesia as volume effect vasoconstriction. In the present study the target is to find the safest technique for anesthesia of patients undergoing cataract surgery.
Methods: Sixty patients undergoing cataract surgery were studied prospectively; patients were divided into 2 groups; retrobulbar group (group R, n=30) received retrobulbar anes-thesia with and topical group (group T, n=30) received deep topical anesthesia.
Results: The percentage reduction in peak systolic flow velocity and end diastolic flow velocity 5 minutes after anesthesia compared to pre anesthetic level was significantly less (p<0.01) in group T (0.5±1.3, 0.3±0.8) compared to group R (4.9±1.9, 0.5±1.3).
Conclusion: Deep topical anesthesia technique is better than retrobulbar anesthesia for cataract surgery as regards the effect on ocular hemodynamics and is recommended.