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<p>Aims: This study aims to examine the feasibility and the safety of in-office percutaneous trans-thyrohyoid laryngeal injection (TTH-LI) using a novel sex-specific double-bend needle (SS-DBN) by analysing the success rate, procedure-related difficulty, procedure duration, and procedure-related symptoms and complications. Additionally, we aim to compare the study outcome measures across different sexes. Methods: We conducted a cross-sectional observational study on 81 consecutive patients who underwent TTH-LI using a novel SS-DBN between 1st May 2021 and 1st September 2022. The novel SS-DBN was fabricated using 35&#xa0;mm 21G needles based on computed tomographic measurements of laryngeal dimensions from a previous study by the same institution. SS-DBNs were sterilised and dispensed by a dedicated researcher. The success rate, procedure duration, operator-related difficulties, and patients’ discomfort scale were measured and analysed. Results: Eighty-one TTH-LI procedures were carried out on 37 (45.7%) males and 44 (54.3%) females (<i>p</i> = 0.817) by two dedicated laryngologists for various indications (medialisation laryngoplasty (58.0%), botulinum toxin injection (38.3%), and steroid injection (3.7%) using the needles assigned specifically to each sex. The overall success rate was 96.3% (male 94.6%, female 97.7%) and mean duration for needle to reach injection site was 0.5&#xa0;min for the female needle group and 0.29&#xa0;min for the male needle group. The female needle group reported significantly higher procedure-related difficulty in petiole penetration, and higher pain score during and post-procedure. No serious complications were recorded during the study. Conclusion: In-office TTH-LI using SS-DBN demonstrates high success rates and safe, validating the feasibility of this approach.</p>

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Sex-Specific Double-Bend Needle Design for Office-Based Trans-Thyrohyoid Laryngeal Injection: A Prospective Feasibility Study

  • 期刊论文

  • 发表日期：

    2025年8月23日

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  • Mawaddah Azman,
  • Farhan Fader,
  • Faizah Mohd Zaki,
  • Kew Thean Yean,
  • Marina Mat Baki

摘要

Aims: This study aims to examine the feasibility and the safety of in-office percutaneous trans-thyrohyoid laryngeal injection (TTH-LI) using a novel sex-specific double-bend needle (SS-DBN) by analysing the success rate, procedure-related difficulty, procedure duration, and procedure-related symptoms and complications. Additionally, we aim to compare the study outcome measures across different sexes. Methods: We conducted a cross-sectional observational study on 81 consecutive patients who underwent TTH-LI using a novel SS-DBN between 1st May 2021 and 1st September 2022. The novel SS-DBN was fabricated using 35 mm 21G needles based on computed tomographic measurements of laryngeal dimensions from a previous study by the same institution. SS-DBNs were sterilised and dispensed by a dedicated researcher. The success rate, procedure duration, operator-related difficulties, and patients’ discomfort scale were measured and analysed. Results: Eighty-one TTH-LI procedures were carried out on 37 (45.7%) males and 44 (54.3%) females (p = 0.817) by two dedicated laryngologists for various indications (medialisation laryngoplasty (58.0%), botulinum toxin injection (38.3%), and steroid injection (3.7%) using the needles assigned specifically to each sex. The overall success rate was 96.3% (male 94.6%, female 97.7%) and mean duration for needle to reach injection site was 0.5 min for the female needle group and 0.29 min for the male needle group. The female needle group reported significantly higher procedure-related difficulty in petiole penetration, and higher pain score during and post-procedure. No serious complications were recorded during the study. Conclusion: In-office TTH-LI using SS-DBN demonstrates high success rates and safe, validating the feasibility of this approach.