Related Experiment Video
Updated: Jul 29, 2026

07:07
Endoscopy Guided Photoablation of Endometrial Cysts using a 980 nm Laser with a Contact Fiber in Mares
Published on: July 16, 2020
Endoscopic laser therapy for watermelon stomach
1Department of Gastroenterology, Westmead Hospital, Sydney, New South Wales, Australia.
Journal of Gastroenterology and Hepatology
|September 1, 1996
Summary
Neodymium:yttrium-aluminium-garnet laser coagulation effectively treats gastric antral vascular ectasia (watermelon stomach), resolving anemia caused by gastrointestinal bleeding. This safe therapy significantly reduces transfusion needs and improves hemoglobin levels.
Area of Science:
- Gastroenterology
- Hematology
- Medical Technology
Background:
- Gastric antral vascular ectasia (GAVE), also known as watermelon stomach, is a condition causing significant gastrointestinal blood loss.
- Anemia resulting from GAVE often necessitates frequent blood transfusions, impacting patient quality of life.
Purpose of the Study:
- To evaluate the efficacy and safety of neodymium:yttrium-aluminium-garnet (Nd:YAG) laser coagulation for treating anemia secondary to GAVE.
- To assess the impact of Nd:YAG laser treatment on transfusion requirements and hemoglobin levels in patients with GAVE.
Main Methods:
- A cohort of eleven patients with anemia due to GAVE underwent Nd:YAG laser coagulation therapy.
- Treatment involved a median of 3.0 sessions, with outcomes assessed over a mean follow-up period of 27.3 months.
Main Results:
- Nd:YAG laser coagulation led to a significant reduction in transfusion requirements, from 2.5 units/month pre-treatment to 0.4 units/month post-treatment (P < 0.02).
- Mean hemoglobin levels improved significantly from 7.7 g/dL to 11.9 g/dL (P < 0.001).
- Six patients became transfusion-independent, and two experienced minimal transfusion needs post-treatment.
Conclusions:
- Nd:YAG laser coagulation is a safe and effective first-line therapy for managing anemia associated with GAVE.
- The procedure demonstrates substantial clinical benefit by reducing transfusion dependency and improving hematological parameters.

