Evaluating the preemptive analgesia on the postoperative pain pain by using peribulbar block via local anesthesia

Scleral buckling is one of ophthalmic surgeries which may present as postoperative pain. One of the methods to control such a pain can be preemptive analgesia. There are limited studies in this regard. We evaluated the efficacy of preventive analgesia for reduction of postoperative pain by using peribulbar block via local anesthesia, acetaminophen pills & diclofenac Na suppository prior to scleral buckling surgeries.
Material & Our final sample consisted of 120 patients selected for scleral buckling surgery & divided into 4 groups. Each group had 30 patients including group 1 or peribulbar with 5ml lidocaine 2%, 5ml bupivacaine 0.5% & 150 IU hialoranidase injected peribulbar before surgery, the second group using acetaminophen 325mg tablets every 8h from 24h prior to surgery third group using diclofenac Na 75 mg suppository every 12h from 24h prior to surgery four group or control group did not receive any additional analgesia. All of the patients underwent general anesthesia similarly. The verbal pain score after surgery, the first time of requesting analgesic consumption after surgery, post anesthetic nausea & vomiting & the incidence of occulocardiac reflex during surgery were studied.
The first time of requested analgesia after surgery among peribulbar group (group 1) 58±20 minutes, among the second group 36±20 minutes, among the third group 34±12 minutes & 1n group 4 40±18 minutes were seen (P Peribulbar block with local anesthesia associated with general anesthesia prior to operation of scleral buckling considerably causes to reduce postoperative pain, prolong the first time of analgesia request after surgery and decrease the frequency & the mean of postoperative analgesic drugs as well as the incidence of PONV & occulocardiac reflex will be decreased.