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Middle East African Journal of Ophthalmology Middle East African Journal of Ophthalmology
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ORIGINAL ARTICLE
Year : 2016  |  Volume : 23  |  Issue : 4  |  Page : 307-310

Comparison of olive tipped and conventional steven's cannula for sub-tenon ophthalmic anesthesia


1 Department of Outreach and Eligibility, King Khaled Eye Specialist Hospital, Riyadh, Saudi Arabia
2 Department of Anesthesia, King Khaled Eye Specialist Hospital, Riyadh, Saudi Arabia
3 Research Department, King Khaled Eye Specialist Hospital, Riyadh, Saudi Arabia

Correspondence Address:
Abdul Zahoor
Department of Anesthesia, King Khaled Eye Specialist Hospital, POB 7191, Aruba Road, Riyadh, 11462
Saudi Arabia
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0974-9233.194080

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Purpose: To compare the efficacy of the olive tipped (OT) cannula to the conventional Steven's cannula for sub-Tenon block (STB) before cataract surgery. Methods: This prospective, randomized, double-masked compared STB delivered in cataract surgery patients with an OT cannula or a conventional Steven's cannula (ST). Outcome variables included the akinesia score and lid movement scores at 5 and 10 min. The patient perception of pain during delivery of the STB and surgery were also compared between groups. Surgeon satisfaction with anesthesia was compared between groups. P <0.05 was statistically significant. Results: There were sixty patients in each group. The age between groups was not statistically different (P = 0.4). The body mass index was higher in the ST group compared to the OT group (P < 0.001). The akinesia score at 5 and 10 min did not differ between groups (P = 0.07 and P = 0.6, respectively). The patient perception of pain during STB and surgery were similar between groups (P = 0.1 and P = 0.06, respectively). There were six patients with mild chemosis and redness in the OT group and 15 patients in the ST group. Conclusion: An OT cannula is equally effective as the conventional Steven's cannula for delivering STB anesthesia before cataract surgery.


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