Endoscopic ultrasound-guided intravascular therapy

Area of Science:

• Gastroenterology and Interventional Endoscopy
• Vascular Interventions
• Medical Imaging

Background:

• The gastrointestinal tract serves as an access point to mediastinal and abdominal vascular structures.
• Conventional endoscopic treatments for conditions like gastric varices have limitations.

Purpose of the Study:

• To explore the potential of interventional endoscopic ultrasound (EUS) for vascular access and therapy.
• To evaluate EUS-guided treatment for gastric varices and other vascular abnormalities.

Main Methods:

• Utilizing fine-needle aspiration (FNA) needles through EUS for targeted delivery of therapeutic agents (sclerosants, cyanoacrylate, coils).
• Performing EUS-guided interventions for gastric varices, portal vein angiography, pressure measurements, and shunt placement.

Main Results:

• EUS enables access to vascular structures via standard FNA needles for therapeutic agent delivery.
• EUS-guided treatment of gastric varices presents theoretical advantages over conventional methods.
• Novel indications include portal vein interventions and embolization of vascular structures.

Conclusions:

• EUS-guided vascular therapy is a promising field with expanding indications.
• Controlled studies are essential to establish the efficacy of EUS for variceal bleeding prevention.
• Therapeutic interventions targeting the heart and surrounding structures may also be feasible.