The Efficacy of Superior Laryngeal Nerve Block for Chronic Cough: A Scoping Review.

IF 2.5 4区 医学 Q1 AUDIOLOGY & SPEECH-LANGUAGE PATHOLOGY Journal of Voice Pub Date : 2025-01-28 DOI:10.1016/j.jvoice.2025.01.004
Courteney McClutchy, Mark McKone, Annalize Sussman, Julia Barry, S Carter Wright, Lyndsay L Madden, Kathryn Ruckart
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引用次数: 0

Abstract

Objective: Chronic cough poses diagnostic and treatment challenges due to its often multifactorial nature. Chronic cough associated with laryngeal hypersensitivity is linked to sensory neuropathy of the superior laryngeal nerve and can be complex to manage. Superior laryngeal nerve (SLN) blocks are increasingly being utilized by laryngologists to treat refractory chronic cough with the intent of reducing inflammation and nerve hypersensitivity. This scoping review aims to provide an overview of the current literature examining the efficacy of SLN blocks for treatment of chronic cough, identify knowledge gaps, and guide future studies.

Methods: A search strategy was developed in collaboration with a medical librarian and run in Ovid Medline, Embase (Elsevier), Web of Science Core Collection (Clarivate), CINAHL Ultimate (Ebscohost), Cochrane, and Google Scholar (via Harzing's Publish or Perish). Search scope was from the inception of each database to March 5, 2024. Inclusion criteria were broad and focused on any study that utilized SLN block(s) for the treatment of chronic cough. The searches yielded 1264 articles that were loaded into Covidence systematic review software for deduplication and screening. Title and abstract and then full-text screening were performed.

Results: Twelve studies met inclusion criteria. Study designs varied, including retrospective reviews, case series, and one placebo-controlled trial. Outcome measures included validated patient-reported cough-specific quality of life measures and/or subjective patient reports. The number of blocks primarily ranged from an average of 2-4 per patient, with follow-up durations ranging anywhere from 2 weeks to 22.5 months. Adverse effects were minimal and primarily self-limiting. Other reported interventions included behavioral cough suppression therapy, used in conjunction with SLN blocks, and neuromodulators, which were often trialed prior to SLN therapy. All 12 studies reported improvement in cough, and while several studies reported significant improvements in patient-reported outcomes using Cough Severity Index and Leicester Cough Questionnaire questionnaires, only eight studies provided statistical testing with P values. The remaining studies did not perform statistical analyses or report confidence intervals, instead presenting descriptive or qualitative results.

Conclusions: Literature on the efficacy of SLN blocks for chronic cough reveals consistent positive outcomes. There is a need for randomized controlled trials, systematic studies with larger cohorts, longitudinal follow-up, and further comparison of ipsilateral versus bilateral blocks to determine the efficacy of SLN blocks for treatment of chronic cough.

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来源期刊
Journal of Voice
Journal of Voice 医学-耳鼻喉科学
CiteScore
4.00
自引率
13.60%
发文量
395
审稿时长
59 days
期刊介绍: The Journal of Voice is widely regarded as the world''s premiere journal for voice medicine and research. This peer-reviewed publication is listed in Index Medicus and is indexed by the Institute for Scientific Information. The journal contains articles written by experts throughout the world on all topics in voice sciences, voice medicine and surgery, and speech-language pathologists'' management of voice-related problems. The journal includes clinical articles, clinical research, and laboratory research. Members of the Foundation receive the journal as a benefit of membership.
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