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Effect of different fentanyl concentrations added to local anesthetic mixture in peribulbar block on pain experience and cooperation of patients during training residents' phacoemulsification

Poster Details

First Author: H.Elmekawey EGYPT

Co Author(s):    I. Kamel   A. Mounier   A. Zaglol   I. Saied     

Abstract Details


Evaluation of the effect of different concentrations of fentanyl added to the local anesthetic mixture on pain expression and patients' cooperation during phacoemulsification by training residents.


Kasr Al Aini hospital, Cairo University, Egypt.


Double blinded randomized controlled clinical trial. 60 patients with cataract grade 1 to ASA grade I, II and III, scheduled for elective phacoemulsification under regional anesthesia. They were randomly divided into four groups, in Group 1 (Control Group), patients received Lidocaine 2% and Hyaluronidase 15 IU/ml. In Groups 2, 3 and 4 (Fentanyl Groups), the patients received Lidocaine 2% and Hyaluronidase 15 IU/ml in addition to Fentanyl 1 μg/ml, 2 μg/ml and 3μg/ml respectively. Every patient was graded using a visual analogue scale (VAS) from 0 (no pain) to 10 (unbearable pain) after the surgery. The cooperation of the patient was graded from 0 (no event) to 3 (marked lids and eye squeezing) by the surgeon.


no statistically significant difference between the four groups in the onset and duration of lid and globe akinesia. There was a significant difference between the control group and the fentanyl groups as regard the duration of analgesia. In the control group and fentanyl 1μg/ml group, the patients' analgesia lasts for 100-103 minutes from the local anesthetic injection, while it lasts for 116±19 minutes and 144±11 minutes in the fentanyl 2μg/ml group, and 3μg/ml group, respectively.


Local peribulbar Fentanyl injection in combination with Lidocaine and Hyaluronidase is a safe and effective method in prolonging analgesia and improving patients cooperation during lengthy phacoemulsification done by training residents. FINANCIAL INTEREST: NONE

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