American Society of Hirudotherapy

Intraoral Hirudotherapy for Venous Congestion following Free Flap Head and Neck Reconstruction: Novel Intraoral Technique

Technique report published in ORL (2021)

Last Updated: June 18, 2026Reviewed by: ASH Editorial Board
Research article — evidence reviewArticle reference
Evidence: Research reportClinical TrialsSafety & Infection ControlAmanian A et al. · ORL; journal for oto-rhino-laryngology and its related specialties, 2021

Abstract

Intraoral hirudotherapy is traditionally used for venous congestion following head and neck free flap reconstruction. Many institutions and healthcare teams have been reluctant to use intraoral leech therapy due to risks such as migration into the airway, increased infection from intraoral manipulation, and patient discomfort. Several protocols recommend blocking the path to the oropharynx via gauze or leaving a tracheotomy in place to protect the airway. This report pre-sents a novel technique for intraoral hirudotherapy that is safe and simple for treatment of free flap venous congestion. The base of a clear cup or a plastic lid is utilized, and the leech is attached onto the inside of the lid with 2 sutures near each end. Several cups with leeches attached are made at a time to reduce delay and difficulty of application by less experienced clinical staff. The leech is then applied onto the compromised flap and then simply removed once it has unlatched from the flap. This method allows the leech to be applied with ease by multiple members of the healthcare team, decreases the need for intraoral manipulation, and reduces the risk of migration into the aerodigestive tract. Future prospective studies are warranted to assess the efficacy of this technique.

Abstract sourced from PubMed (NCBI) for the cited record. See the original publication for the authoritative version.

Publication typeJournal Article
Indexed MeSH termsFree Tissue FlapsHumansHyperemiaLeechingNeckPlastic Surgery Procedures

Summary

Novel intraoral hirudotherapy technique using suture-secured leeches on a clear lid for safer free flap salvage in head and neck reconstruction.

Why This Matters for Hirudotherapy

This article describes a novel intraoral technique for applying leeches to treat venous congestion after head and neck free flap reconstruction, using a clear cup or plastic lid sutured to the leech to enable safe, simple application, reduce intraoral manipulation, and prevent migration into the aerodigestive tract. For ASH, this is relevant as a practical procedural refinement of hirudotherapy in a technically challenging anatomical setting where the therapy is already established. Honest caveat: this is a technique description from what appears to be a single-institution experience with no comparative outcomes, sample size, or efficacy data reported; the authors explicitly state that future prospective studies are warranted to assess efficacy.

Citation

Intraoral Hirudotherapy for Venous Congestion following Free Flap Head and Neck Reconstruction: Novel Intraoral Technique.

Amanian A et al. · ORL; journal for oto-rhino-laryngology and its related specialties, 2021

Added to ASH library: May 27, 2026 · Site last updated: June 18, 2026

This website provides educational information and does not constitute medical advice, diagnosis, or treatment recommendations. Medicinal leech therapy carries clinically meaningful risks and should be performed only by qualified clinicians under institutionally approved protocols. FDA 510(k) clearance for medicinal leeches is limited to specific indications; investigational and off-label discussions are labeled accordingly. For patient-specific guidance, consult a qualified healthcare provider.