Evidence map›Paper›PMID 42907851›Full record

SynthesisHead & face medicine2026

Intraoperative facial nerve monitoring on operative duration in parotidectomy: a systematic review and meta-analysis.

Jheng-Liang Chen, I-Chen Lin, Eric Yi-Liang Shen, Cheng-Ming Luo, Yao-Te Tsai, Shih-Chi Su, Li-Jen Hsin, Yi-Chan Lee

Abstract readSystematic ReviewMeta-Analysis
PubMed Full text at PMC Publisher
In one paragraph

Synthesis in Head & face medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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2 · The registry

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3 · Its place in the literature

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4 · The record

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5 · Who and what money

Authors and funding

8 authors.

Jheng-Liang ChenDepartment of Otolaryngology - Head and Neck Surgery, Chang Gung Memorial Hospital, 222, Maijin Rd., Anle Dist., Keelung City, 204, Taiwan.
I-Chen LinCollege of Medicine, Chang Gung University, Taoyuan, Taiwan.
Eric Yi-Liang ShenDepartment of Radiation Oncology, Chang Gung Memorial Hospital, Taoyuan, Taiwan.
Cheng-Ming LuoDepartment of Otolaryngology - Head and Neck Surgery, Chang Gung Memorial Hospital, 222, Maijin Rd., Anle Dist., Keelung City, 204, Taiwan.
Yao-Te TsaiDepartment of Otolaryngology - Head and Neck Surgery, Chang Gung Memorial Hospital, Chiayi, Taiwan.
Shih-Chi SuWhole-Genome Research Core Laboratory of Human Diseases, Chang Gung Memorial Hospital, Keelung, Taiwan.
Li-Jen HsinDepartment of Otolaryngology - Head and Neck Surgery, Chang Gung Memorial Hospital, Taoyuan, Taiwan.
Yi-Chan LeeDepartment of Otolaryngology - Head and Neck Surgery, Chang Gung Memorial Hospital, 222, Maijin Rd., Anle Dist., Keelung City, 204, Taiwan. alberttylee@gmail.com.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIntraoperative facial nerve monitoring (IONM) can be used during parotidectomy. However, its effect on operative duration remains controversial. This systematic review and meta-analysis aimed to evaluate the association between IONM use and operative duration in parotidectomy.

methodsA systematic search of MEDLINE, Embase, and the Cochrane Library was conducted for studies published up to January 2026. Studies reporting operative duration for parotidectomy performed with and without IONM were included. Data extraction and quality assessment were performed independently by reviewers. Random-effects meta-analyses were conducted to calculate mean differences (MDs) with corresponding 95% confidence intervals (CIs) for operative duration and tumor size. Subgroup, sensitivity, and publication bias analyses were also performed.

resultsEight studies comprising 1677 patients were included. Overall, IONM use was associated with a statistically significant reduction in operative duration (MD, - 5.62 min; 95% CI, - 11.02 to - 0.23). In procedure-specific analyses, operative duration was significantly shorter with IONM in superficial parotidectomy (MD, - 9.09 min; 95% CI, - 17.49 to - 0.70), whereas no significant difference was observed in total parotidectomy. Pooled analyses showed no significant differences in tumor size between IONM and non-IONM groups in either the overall cohort or the superficial parotidectomy group.

conclusionsIONM use is associated with a reduction in operative duration in parotidectomy overall and in superficial parotidectomy. These findings suggest a potential procedural efficiency benefit of IONM in selected parotidectomy cases.

Indexed as

Facial NerveFacial Nerve InjuriesMonitoring, IntraoperativeOperative TimeParotid GlandParotid NeoplasmsHumansFacial nerve monitoringOperative durationParotidectomy

Identifiers

PMID42907851
PMCPMC13688902

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.