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A comparison of three sub-Tenon's cannulae.
Eye (Lond). 2004 Sep; 18(9):873-6.E

Abstract

PURPOSE

To compare the quality of anaesthesia and complication rates between three sub-Tenon cannula of increasing length (anterior Greenbaum, mid Kumar-Dodds, and posterior Steven's sub-Tenon's cannulae).

METHODS

A total of 150 patients undergoing cataract extraction were randomised to receive a sub-Tenon injection of 5 ml of 2% lidocaine with hyaluronidase with one of the three cannulae. The development of akinesia was assessed every 2 min over a 6-min period. Complications were also recorded.

RESULTS

There was no difference in the onset of akinesia, with 46, 50, and 46 patients achieving adequate akinesia within 6 min for the anterior, mid, and posterior groups respectively (P>0.05). There was an increase in retained lid opening with anterior compared to mid and posterior cannulae (P=0.0001). There was significantly less retained lid closure with the posterior compared to the mid or anterior cannulae (P<00001). The mean (range, SD) scores for pain during injection were 0.4 (0-5, 0.83), 1.2 (0-9, 1.96), and 1.1 (0-6, 1.19) for the anterior, mid, and posterior groups, respectively. These were not significantly different between the anterior and mid groups, or the mid and posterior groups (P>0.05), but there was significantly more pain on injection with the posterior compared to the anterior groups (P<0.01). All patients scored intraoperative pain as zero. There was significantly more chemosis in the anterior group (76%) compared to the mid (20%) and posterior (32%) groups (P<0.0001). There were significantly (P=0.0004) more conjunctival haemorrhages in the anterior group (56%) than the mid (20%) or posterior (20%) groups.

CONCLUSIONS

We have shown that all three cannulae provide high-quality anaesthesia with minor differences in retained muscle activity, chemosis, and haemorrhage rates.

Authors+Show Affiliations

Department of Anaesthesia, The James Cook University Hospital, Middlesbrough, UK. cmkumar@boas.orgNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Clinical Trial
Comparative Study
Journal Article
Randomized Controlled Trial

Language

eng

PubMed ID

14963484

Citation

Kumar, C M., et al. "A Comparison of Three sub-Tenon's Cannulae." Eye (London, England), vol. 18, no. 9, 2004, pp. 873-6.
Kumar CM, Dodds C, McLure H, et al. A comparison of three sub-Tenon's cannulae. Eye (Lond). 2004;18(9):873-6.
Kumar, C. M., Dodds, C., McLure, H., & Chabria, R. (2004). A comparison of three sub-Tenon's cannulae. Eye (London, England), 18(9), 873-6.
Kumar CM, et al. A Comparison of Three sub-Tenon's Cannulae. Eye (Lond). 2004;18(9):873-6. PubMed PMID: 14963484.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - A comparison of three sub-Tenon's cannulae. AU - Kumar,C M, AU - Dodds,C, AU - McLure,H, AU - Chabria,R, PY - 2004/2/14/pubmed PY - 2004/12/28/medline PY - 2004/2/14/entrez SP - 873 EP - 6 JF - Eye (London, England) JO - Eye (Lond) VL - 18 IS - 9 N2 - PURPOSE: To compare the quality of anaesthesia and complication rates between three sub-Tenon cannula of increasing length (anterior Greenbaum, mid Kumar-Dodds, and posterior Steven's sub-Tenon's cannulae). METHODS: A total of 150 patients undergoing cataract extraction were randomised to receive a sub-Tenon injection of 5 ml of 2% lidocaine with hyaluronidase with one of the three cannulae. The development of akinesia was assessed every 2 min over a 6-min period. Complications were also recorded. RESULTS: There was no difference in the onset of akinesia, with 46, 50, and 46 patients achieving adequate akinesia within 6 min for the anterior, mid, and posterior groups respectively (P>0.05). There was an increase in retained lid opening with anterior compared to mid and posterior cannulae (P=0.0001). There was significantly less retained lid closure with the posterior compared to the mid or anterior cannulae (P<00001). The mean (range, SD) scores for pain during injection were 0.4 (0-5, 0.83), 1.2 (0-9, 1.96), and 1.1 (0-6, 1.19) for the anterior, mid, and posterior groups, respectively. These were not significantly different between the anterior and mid groups, or the mid and posterior groups (P>0.05), but there was significantly more pain on injection with the posterior compared to the anterior groups (P<0.01). All patients scored intraoperative pain as zero. There was significantly more chemosis in the anterior group (76%) compared to the mid (20%) and posterior (32%) groups (P<0.0001). There were significantly (P=0.0004) more conjunctival haemorrhages in the anterior group (56%) than the mid (20%) or posterior (20%) groups. CONCLUSIONS: We have shown that all three cannulae provide high-quality anaesthesia with minor differences in retained muscle activity, chemosis, and haemorrhage rates. SN - 0950-222X UR - https://www.unboundmedicine.com/medline/citation/14963484/A_comparison_of_three_sub_Tenon's_cannulae_ L2 - http://dx.doi.org/10.1038/sj.eye.6701332 DB - PRIME DP - Unbound Medicine ER -