Study compares carotid ligation approaches in dogs
Bottom line
A new cadaveric study in Veterinary Surgery describes and compares lateral and ventral surgical approaches for temporary or permanent common carotid artery ligation at the level of the medial retropharyngeal lymph node in dogs, with or without concurrent lymphadenectomy. The investigators reviewed 10 contrast-enhanced CT scans to map the local anatomy, then tested four procedural variations in 12 medium-breed dog cadavers. Both approaches provided reliable access to the common carotid artery and nearby cervical lymph nodes, and the authors reported successful bilateral ligation with minimal vascular trauma. The technique is positioned as a practical option when hemorrhage control is needed in head and neck surgery, or when carotid ligation may be combined with planned lymph node removal. (eurekamag.com)
Why it matters: For veterinary surgeons, this study adds an anatomic and technical roadmap for a high-stakes but uncommon maneuver in dogs undergoing oral, maxillofacial, or cervical procedures. The medial retropharyngeal lymph node is clinically important in head and neck cancer staging, but it's anatomically challenging to access because of its proximity to the common carotid artery and other critical structures. Prior literature has described carotid ligation as a way to control severe hemorrhage in oral and maxillofacial surgery, and separate ventral approaches for retropharyngeal lymphadenectomy, so this paper helps connect those needs into one operative field. Still, the findings come from cadavers, not live patients, and published case literature shows carotid ligation can carry neurologic risk in some dogs, especially when bilateral occlusion is involved. (journals.sagepub.com)
What to watch: The next step is whether clinical case series show this approach improves hemorrhage control, surgical efficiency, or oncologic workflow in live dogs without adding meaningful neurologic or vascular complications. (eurekamag.com)
Key facts
- Study type
- Cadaveric comparative study
- Journal
- Veterinary Surgery
- Species
- Dogs
- Sample size
- 10 contrast-enhanced CT scans, and 12 medium-breed dog cadavers
- Procedures compared
- Lateral and ventral common carotid ligation, with or without lymphadenectomy
- Anatomic target
- Common carotid artery at the level of the medial retropharyngeal lymph node
- Main finding
- Both approaches provided reliable access to the artery and nearby cervical lymph nodes
- Safety finding
- Successful bilateral ligation with minimal vascular trauma in cadavers
- Clinical use
- A practical option for hemorrhage control in head and neck surgery, or when combined with planned lymph node removal
A newly published cadaveric study in Veterinary Surgery offers a detailed surgical roadmap for common carotid artery ligation at the level of the medial retropharyngeal lymph node in dogs, a region that matters in both hemorrhage control and head-and-neck oncology. In the study, Braiden M. Blatt, Elizabeth A. Maxwell, Judith Bertran, and Josep Aisa evaluated lateral and ventral approaches, with and without lymphadenectomy, and found that each provided reliable access to the artery and regional lymph nodes with minimal vascular trauma in cadaver models. (eurekamag.com)
The work builds on two existing strands of veterinary surgery literature. One is the long-standing need for dependable hemorrhage control during oral and maxillofacial procedures, where severe bleeding can be difficult to manage once vessels retract or become inaccessible. A 2016 Journal of Veterinary Dentistry paper described common carotid ligation as a step-by-step option for controlling blood loss in these settings. The other is the growing recognition that the medial retropharyngeal lymph node is a key drainage center for the canine head and neck, despite being harder to sample or remove because of its deep location and adjacency to major neurovascular structures. (journals.sagepub.com)
According to the study summary, the authors first assessed 10 contrast-enhanced CT scans from medium-breed dogs for spatial relationships among the carotid artery, lymphocenters, and adjacent anatomy. They then randomized 12 cadavers to undergo two of four procedures: lateral or ventral carotid ligation, each performed with or without concurrent lymphadenectomy. Across those cadaver procedures, both approaches allowed access for unilateral or bilateral temporary or permanent ligation at the medial retropharyngeal lymph node level. (eurekamag.com)
That anatomic overlap is what makes the paper notable. Earlier reports have described a single ventral midline incision for bilateral mandibular and medial retropharyngeal lymph node removal in dogs with head and neck cancers, and later work documented how often metastasis reaches those nodes in canine head malignancies. In other words, surgeons are already working in this region for staging and treatment, and this new study suggests carotid control may sometimes be incorporated into the same operative neighborhood rather than approached as a wholly separate problem. (onlinelibrary.wiley.com)
Direct outside commentary on this specific 2026 paper was limited in public sources at the time of reporting. But the broader literature gives a useful frame: common carotid ligation has been described as feasible in dogs because collateral circulation can preserve cerebral perfusion, yet it is not risk-free. A published case report in Frontiers in Veterinary Science described a striate artery infarct after bilateral carotid artery ligation in a dog, underscoring that technical success does not eliminate the possibility of neurologic complications. That tension, between access and hemostatic control on one hand, and perfusion risk on the other, is likely to shape how clinicians interpret the new cadaver data. (pmc.ncbi.nlm.nih.gov)
Why it matters: For veterinary professionals, especially surgeons, dentists, and oncologists managing complex head and neck disease, this study is useful because it addresses a real procedural intersection: bleeding control, lymph node access, and difficult cervical anatomy. The medial retropharyngeal lymph node is highly relevant in oncologic staging and treatment planning, while carotid ligation remains a potential salvage or planned adjunct in select maxillofacial cases. A comparative description of lateral versus ventral access could help teams think more deliberately about exposure, workflow, and whether lymphadenectomy and vascular control can be coordinated in one surgery. But the evidence remains preclinical. Cadaveric feasibility does not answer live-patient questions about hemorrhage, collateral perfusion, operative time, postoperative morbidity, or case selection. (eurekamag.com)
What to watch: The key next development will be clinical follow-up, ideally case series or multicenter retrospective data, showing when surgeons choose this approach in live dogs, whether one exposure proves more practical than the other, and how often neurologic or vascular complications emerge after unilateral versus bilateral ligation. (eurekamag.com)