Transcatheter Embolization Techniques for Gastrointestinal Bleeding

Transcatheter arterial embolization has become a cornerstone in the management of acute and recurrent gastrointestinal haemorrhage, offering a minimally invasive alternative to surgery. Under fluoroscopic guidance, interventional radiologists advance a microcatheter into the culprit artery supplying the bleeding site and deploy an embolic agent to achieve haemostasis. Techniques range from proximal vessel occlusion to superselective embolization within tertiary branches, with choice of coils, particles, glues or resorbable sponges tailored to the clinical context. Advances in imaging and catheter design have improved the precision of vessel targeting and minimised non-target ischaemia. In elective and emergency settings alike, embolization demonstrates high technical success rates and acceptable complication profiles. Its global significance is underscored by widespread adoption in centres lacking surgical capacity, and by evolving indications from peptic ulcer and tumour-related bleeds to prophylactic embolization in endoscopically negative cases.

Research from Nature Portfolio

A recent investigation evaluated prophylactic embolization using quick-soluble gelatin sponge particles in patients with angiographically negative acute gastrointestinal bleeding. In a cohort treated between 2021 and 2023, technical success was universal and only one case of rebleeding occurred, managed effectively with repeat embolization. The rapid biodegradation of the sponge particles within hours allowed vessel recanalization, with no reported ischaemic complications. This study highlights the promise of short-lived embolics for cases where angiographic signs of bleeding are absent yet clinical risk of rebleeding remains high.

Transcatheter Embolization Techniques for Gastrointestinal Bleeding publication trend

The graph below shows the total number of articles in transcatheter embolization techniques for gastrointestinal bleeding across all publications each year (not limited to Nature Index journals).

Technical terms

Transcatheter arterial embolization (TAE): A minimally invasive procedure in which a catheter is navigated into a target artery to deliver occlusive materials and arrest bleeding.

Embolic agent: A substance such as coils, particles, glue or sponge introduced into the vasculature to obstruct blood flow and achieve haemostasis.

Microcoil: A small metallic coil that induces thrombosis at the tip of a catheter, enabling precise vessel occlusion.

n-butyl cyanoacrylate (NBCA): A liquid adhesive embolic that polymerises rapidly on contact with blood, forming a permanent occlusion.

Gelatin sponge particles: Biodegradable particles used for temporary vessel occlusion, typically absorbed within hours to weeks.

Superselective embolization: Targeted delivery of embolic material into a distal branch to minimise non-target ischaemia and preserve adjacent tissue.

References

1. Trans-arterial embolization for treatment of acute lower gastrointestinal bleeding—a multicenter analysis. European Radiology (2024).
2. Optimal combination of microcoils, flow control, and n-butyl cyanoacrylate–Lipiodol–iopamidol (2:3:1) for feasible embolization of medium-sized arteries in an in vitro vascular model. Japanese Journal of Radiology (2024).
3. Preliminary report on embolization with quick-soluble gelatin sponge particles for angiographically negative acute gastrointestinal bleeding. Scientific Reports (2024).
4. Empiric Transcatheter Arterial Embolization for Massive or Recurrent Gastrointestinal Bleeding: Ten-year Experience from a Single Tertiary Care Center. Cureus (2019).