American Society of Hirudotherapy

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

Technical note published in ORL; journal for oto-rhino-laryngology and its related specialties (2022)

Last Updated: November 1, 2026Reviewed by: ASH Editorial Board
Research article — evidence reviewArticle reference
Evidence: Research reportClinical LiteratureAmanian A et al. · ORL; journal for oto-rhino-laryngology and its related specialties, 2022

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

A novel intraoral technique attaches leeches inside a clear cup or plastic lid with sutures, enabling safer treatment of venous congestion in head and neck free flaps with reduced airway-migration risk and less manipulation.

Why This Matters for Hirudotherapy

This report describes a novel technique for administering intraoral hirudotherapy to manage venous congestion following head and neck free flap reconstruction, in which a leech is sutured inside a clear cup or plastic lid and then applied to the compromised flap. The work addresses well-recognized barriers to intraoral leech use—including risks of airway migration, infection from repeated manipulation, and application difficulty for less experienced staff—by proposing a standardized, pre-assembled device-based approach. The study describes practical engineering and workflow solutions proposed for leech therapy in complex reconstructive settings. The abstract presents only a technical description without quantitative outcome data, patient results, or comparative analysis, and the authors note that prospective studies are warranted to assess efficacy.

Citation

Reference (Vancouver style)

Amanian A, Butskiy O, Zhao K, Anderson DW. Intraoral Hirudotherapy for Venous Congestion following Free Flap Head and Neck Reconstruction: Novel Intraoral Technique. ORL J Otorhinolaryngol Relat Spec. 2022;84(2):174-178. doi:10.1159/000516576. PMID: 34293746

Bibliographic details (authors, volume, pages, DOI) are taken from the PubMed record.

Added to ASH library: March 18, 2026 · Site last updated: November 1, 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.