Lacrimal dilator-facilitated incisionless vs. standard sub-Tenon's block: a randomized, prospective and non-inferiority comparative study

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dc.authoridKumar, Chandra M/0000-0002-5868-6004
dc.authoridYalcin Cok, Oya/0000-0003-3004-2626
dc.contributor.authorCoban-Karatas, Muge
dc.contributor.authorCok, Oya Yalcin
dc.contributor.authorKumar, Chandra M.
dc.date.accessioned2024-11-07T13:32:28Z
dc.date.available2024-11-07T13:32:28Z
dc.date.issued2021
dc.departmentNiğde Ömer Halisdemir Üniversitesi
dc.description.abstractBackground/objectives Standard sub-Tenon's block (STB) involves incision (dissection) of conjunctiva and Tenon's capsule with the help of blunt scissors and forceps, insertion of a blunt sub-Tenon's cannula under the Tenon's capsule and injection of local anaesthetic agent. STB is frequently associated with minor complications such as chemosis and postoperative subconjunctival haemorrhage but rare sight and life-threatening complications. To reduce these minor complications, several variations of incisionless STB have been described however, there are no comparative data. One such incisionless STB involves the use of lacrimal dilator which is easily available in the operating theatre. We compared incisionless lacrimal dilator-facilitated with the standard STB for effectiveness, chemosis, and postoperative subconjunctival haemorrhage. Subjects/methods After obtaining ethical approval, patients scheduled to undergo elective phacoemulsification cataract surgery were enroled to receive incisionless lacrimal dilator-facilitated STB (Group LD) or a standard STB using Wescott scissors and blunt forceps (Group WS). All patients received 3 mL 2% lidocaine without any adjuvant. No sedation was administered. Demographics of the patients, duration of the procedure, analgesia, akinesia, duration of the procedure intraoperative chemosis, and postoperative subconjunctival haemorrhage were compared. Results Both groups were comparable for demographic data, duration of the procedure, analgesia, and akinesia (p > 0.05). The severity of chemosis and postoperative subconjunctival haemorrhage were significantly lower in Group LD (n = 32) in comparison to Group WS (n = 31) (p < 0.001). Conclusions Incisionless lacrimal dilator-facilitated STB decreases intraoperative chemosis and postoperative conjunctival haemorrhage in comparison to standard STB. Analgesia and akinesia are comparable in both techniques.
dc.description.sponsorshipBaskent University Research Fund, Turkey
dc.description.sponsorshipThis study was supported and funded by Baskent University Research Fund, Turkey.
dc.identifier.doi10.1038/s41433-020-01207-0
dc.identifier.endpage1966
dc.identifier.issn0950-222X
dc.identifier.issn1476-5454
dc.identifier.issue7
dc.identifier.pmid33005046
dc.identifier.scopus2-s2.0-85091803206
dc.identifier.scopusqualityQ1
dc.identifier.startpage1961
dc.identifier.urihttps://doi.org/10.1038/s41433-020-01207-0
dc.identifier.urihttps://hdl.handle.net/11480/15437
dc.identifier.volume35
dc.identifier.wosWOS:000574317800003
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherSpringernature
dc.relation.ispartofEye
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_20241106
dc.subjectOphthalmic Regional Anesthesia
dc.subjectRefractive Surgery
dc.subjectCataract
dc.subjectComplications
dc.subjectCannula
dc.subjectPreferences
dc.subjectTrends
dc.titleLacrimal dilator-facilitated incisionless vs. standard sub-Tenon's block: a randomized, prospective and non-inferiority comparative study
dc.typeArticle

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