Study on the clinical efficacy of sub-tenon anesthesia using a ropivacaine and lidocaine mixture for strabismus surgery

• Published in: Guo ji yan ke za zhi Vol. 14; no. 4; pp. 774 - 776
• Main Authors: Si-Ming Zeng, Fan Xu
• Format: Journal Article
• Language: Chinese; English
• Published: Press of International Journal of Ophthalmology (IJO PRESS) 01.04.2014
• Subjects: local anesthesia; ropivacaine; strabismus surgery
• ISSN: 1672-5123; 1672-5123
• DOI: 10.3980/j.issn.1672-5123.2014.04.61

AIM: To assess the clinical efficacy of sub-tenon anesthesia using a ropivacaine and lidocaine mixture for strabismus surgery. METHODS: Totally 80 patients with horizontal strabismus who underwent local anaesthesia surgery were randomly divided into test group and control group. All cases received either sub-tenon anesthesia or subconjunctival anesthesia with 7.5g/L ropivacaine and 20g/L lidocaine mixtures randomly. Intraoperative and postoperative pain scores and oculocardiac reflex were assessed. RESULTS: All 80 cases were successful completion of the surgery under local anesthesia. According to visual analogue scale(VAS), excellent 12 cases, good 21 cases, fair 6 cases, poor 1 case in test group and excellent 2 cases, good 25 cases, fair 12 cases, poor 1 case in control group. There was significant difference by rank sum test(P<0.01). The number of ocular rectus muscle and oculocardiac reflex condition during operation: muscular traction in test group was 74, oculocardiac reflex was 26; in control group it was 76 and 48 respectively. The incidence of oculocardiac reflex between the two groups was significant difference by χ2 test(P<0.01). Rank sum test were used in oculocardiac reflection grade of two groups, there was no statistically difference(P>0.05).CONCLUSION: Sub-tenon anesthesia using a 7.5g/L ropivacaine and 20g/L lidocaine mixture proves to be an efficient procedure for strabismus surgery, which is worth popularizing and applying.