Department of Otorhinolaryngology Head and Neck Surgery - De La Salle University Medical Center Publication Information
Publication Sub Type
Journal Article, Original
Philippine Journal of Otolaryngology Head and Neck Surgery
Objective: To determine the relationship of the surgeon handedness and operative site laterality on operative duration and hearing improvement in otologic surgery, and to further explore whether this relationship may be related to surgeon experience.
Design: Retrospective Cohort
Setting: Tertiary Private Teaching Hospital
Participants: Seventy-three (73) patients aged 18 to 65 years old who underwent primary ear surgery under general anesthesia between January 2016 and December 2019 were retrospectively divided into two groups: 39 contralateral and 34 ipsilateral. The operative durations and hearing improvements were compared using independent t-tests, with consideration of surgeon experience in years further stratifying patients.
Results: There was no significant difference in operative duration, t(71) = 1.14, p = .26, between the contralateral (M = 281.95 minutes, SD = 71.82) and ipsilateral (M = 261.15, SD = 79.26) groups. This same pattern was more pronounced among surgeons with 10+ years of experience although there was also no significant difference in operative time, t(33) = 1.31, p = .19 for both ipsilateral and contralateral surgeries There was no statistically significant difference, t(36) = -0.72, p = .47, in overall mean hearing gain among patients in the contralateral (M = +2.22 dB, SD = 10.54) and ipsilateral (M = +5.12 dB, SD = 14.26) groups. Although the difference was also not statistically significant, t(16) = -1.94, p = .07 for contralateral (M = 0.00, SD = 5.43) and ipsilateral (M = +7.95 dB, SD = 11.52) procedures performed by surgeons with experience of 10 years or more, a mean hearing gain of +7 dB in the ipsilateral group compared to 0 dB in the contralateral group was notable. Conclusion: This study did not prove that regardless of surgeon experience, right-handed surgeons operating on the right ear and left-handed surgeons operating on the left ear have better ear surgery outcomes of operative duration and hearing improvement compared to righthanded surgeons operating on the left ear and left-handed surgeons operating on the right ear. Future studies on larger samples with more complete data may yet demonstrate this effect. References
1. McManus, IC . The history and geography of human handedness. In: Sommer, Iris EC and Rene SKahn. Language Lateralization and Psychosis Cambridge: Cambridge University Press, 2009. 37-57.
2. Zaghloul, M , Saquib, J , Al-Mazrou, A , Saquib, N . Laterality"A Qualitative Assessment of the impact ofhandedness among left-handed surgeons in Saudi Arabia" , January 2018
3. Mehta, S , Lotke, PA . "Impact of Surgeon Handedness and Laterality on Outcomes of Total KneeArthroplasties: Should Right-Handed Surgeons Do Only Right TKAs?"
Am Journal Orthop 36(10): 530-3, October 2007
4. Pennington, N , Redmond, A , Stewart, T , Stone, M . "The impact of surgeon handedness in total hipreplacement"
Ann R Coll Surg Engl 96(6): 437–441, September 2014
5. Luvisa, K , Fan, KL , Black, CK , Wirth, P , Won Lee, D , Del Corral, G . "Does surgeon handednessor experience predict immediate complications after mastectomy? A critical examination ofoutcomes in a single health system"
The Breast Journal 26(10): 1-8, August 2019
6. Naunheim, MR , Le, A , Dedmon, MM , Franco, RA , Anderson, J , Song, PC . "The effect of handednessand laterality in a microlaryngeal surgery simulator"
Am J Otolaryngol 38(4): 472-474, July 2017-August 2017
7. Gupta, S , Parmod, K , Sehgal, S , Gupta, N . "Review of Parameters Used To Assess HearingImprovement in Tympanoplasty"
IOSR-JDMS 15(2 ver X): 122-128, February 2016