Journal
CELL TRANSPLANTATION
Volume 31, Issue -, Pages -Publisher
SAGE PUBLICATIONS INC
DOI: 10.1177/09636897211073136
Keywords
recurrent laryngeal nerve; paralysis; thyroid; amniotic allograft
Funding
- Thyroid Cancer and Parathyroid Foundation, Tampa, Florida, USA
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This study found that intraoperative placement of a human amnion/chorion membrane (HACM) allograft on damaged recurrent laryngeal nerve (RLN) during thyroid surgery can reduce the occurrence and duration of RLN injury. These findings are significant in addressing a major complication of head and neck surgery.
Recurrent laryngeal nerve (RLN) damage is a significant and prevalent complication of thyroid surgery. Based on the beneficial role of a human amnion/chorion membrane (HACM) allograft in wound management and nerve regeneration, we investigated whether placement of a commercially available HACM allograft on dissected RLN could reduce the occurrence and/or duration of RLN injury during thyroidectomy. Among 67 patients undergoing thyroidectomy, 100 at-risk nerves (exposure of at least 3 cm of RLN) received intraoperative placement of HACM; 205 at-risk RLNs without HACM in 134 matched patients served as controls. Patient-reported vocal analysis, physician-assessed vocal analysis, and laryngoscopic assessment of vocal-fold dysfunction were performed before and after surgery. At 24 h after surgery, 17 patients in the control group (12.5%) had documented voice changes; these changes persisted for at least 3 weeks in seven patients (5%). Only one patient (1.5%) in the HACM group had vocal changes at 24 h after surgery, which resolved within 1 week (P < 0.01). Intraoperative placement of the HACM allograft over at-risk RLNs during thyroidectomy may reduce the incidence, severity, and/or duration of intraoperative RLN injury, which could address a significant complication of head and neck surgery. A larger prospectively designed clinical study is warranted to further investigate a possible benefit of the HACM allograft in thyroid surgery and to begin to understand the mechanisms through which a clinical benefit might be mediated.
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