Aortic graft-enteric and paraprosthetic-enteric fistulas

Area of Science:

• Vascular Surgery
• Gastroenterology
• Infectious Disease

Background:

• Aortoenteric fistula is a rare but life-threatening complication following aortic reconstructive surgery with prosthetic grafts.
• Gastrointestinal hemorrhage is frequently a late and severe manifestation of this fistula.
• Paraprosthetic-enteric fistula formation is a precursor to true aortoenteric communication.

Purpose of the Study:

• To review the clinical presentation, diagnostic modalities, and management strategies for aortoenteric fistulas.
• To highlight the importance of early diagnosis and intervention in improving patient outcomes.
• To analyze the mortality associated with delayed treatment.

Main Methods:

• Review of 21 patients diagnosed with aortoenteric fistula.
• Analysis of diagnostic methods including endoscopy, aortography, CT scans, and radionuclide scanning.
• Evaluation of treatment outcomes based on surgical intervention timing.

Main Results:

• Gastrointestinal hemorrhage, including hematochezia and melena, was a common late sign.
• Aggressive diagnostic studies aided in earlier detection.
• Delayed operative treatment was associated with a high mortality rate of 74%.

Conclusions:

• Aortoenteric fistula requires prompt diagnosis and aggressive management.
• Surgical treatment involving graft excision, bowel repair, antibiotics, and revascularization is essential.
• Early intervention significantly impacts survival rates, emphasizing the need for timely surgical correction.