PURPOSE: To compare the effects of ropivacaine and bupivacaine-lidocaine combination on intraocular pressure, quality of block, and degree of postoperative pain in peribulbar block. METHODS: The study group involved 32 patients undergoing elective cataract surgery under peribulbar block. Patients were divided into two groups according to the local anesthetic used: Group 1 (n = 16), ropivacaine 0.75%; and Group 2 (n = 16), bupivacaine 0.5%-lidocaine 2% mixture. Intraocular pressure was measured at four time points: before block (control), 1 min after block, 5 min after block, and 15 min after block with Tonopen. Quality of block was evaluated using a three-point scoring system based on the reduction of globe motility. Patients were asked their degree of intraoperative pain by using a five-point verbal rating score after the surgery. RESULTS:Mean values of intraocular pressure after block were significantly lower in Group 1 in comparison to Group 2 (p < 0.05, Mann Whitney test). The quality of block was better in Group 2, and the degree of postoperative pain was lower in Group 1 (p < 0.05, Mann-Whitney test). CONCLUSIONS:Ropivacaine used in peribulbar block is better than bupivacaine-lidocaine mixture under the same standard conditions in terms of reducing intraocular pressure and postoperative pain in intraocular surgery.
RCT Entities:
PURPOSE: To compare the effects of ropivacaine and bupivacaine-lidocaine combination on intraocular pressure, quality of block, and degree of postoperative pain in peribulbar block. METHODS: The study group involved 32 patients undergoing elective cataract surgery under peribulbar block. Patients were divided into two groups according to the local anesthetic used: Group 1 (n = 16), ropivacaine 0.75%; and Group 2 (n = 16), bupivacaine 0.5%-lidocaine 2% mixture. Intraocular pressure was measured at four time points: before block (control), 1 min after block, 5 min after block, and 15 min after block with Tonopen. Quality of block was evaluated using a three-point scoring system based on the reduction of globe motility. Patients were asked their degree of intraoperative pain by using a five-point verbal rating score after the surgery. RESULTS: Mean values of intraocular pressure after block were significantly lower in Group 1 in comparison to Group 2 (p < 0.05, Mann Whitney test). The quality of block was better in Group 2, and the degree of postoperative pain was lower in Group 1 (p < 0.05, Mann-Whitney test). CONCLUSIONS:Ropivacaine used in peribulbar block is better than bupivacaine-lidocaine mixture under the same standard conditions in terms of reducing intraocular pressure and postoperative pain in intraocular surgery.