Episode # 604 • 06 Jan 2026
Mythbusters: Provocative Mesenteric Angiography for GI Bleeds
A negative angiogram in a patient with recurrent lower GI bleeding often calls for provocative angiography. In this episode of the BackTable Podcast, IR hosts Mike Barraza and Sabeen Dhand team up to talk tools, techniques, and tPA dosing for safe and effective treatment of lower GI bleeds with provocative mesenteric angiography.
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Timestamps
00:00 - Introduction
02:04 - Provocative Angiography for Lower GI Bleeds
04:09 - Detailed Protocol for Provocative Angiography
11:13 - Technical Details and Best Practices
20:07 - Challenges in GI Bleeding Studies
22:40 - Selective Embolization Techniques
27:44 - Handling Negative Angiograms
32:56 - Real-World Case Studies
35:15 - Final Thoughts
Resources
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More about this episode
Dr. Dhand describes the utility of provocative angiography in recurrent lower GI bleed patients with negative CTA and angiography, addressing common myths and concerns that may contribute to its underutilization. The conversation covers detailed procedure steps for both targeted and untargeted angiography, including access sites, dosing of tPA, and angiographic technique. Dr. Dhand emphasizes the importance of gradual increases in tPA dosage in 2 mg increments, and clear communication with care teams and the patient about the nature of the procedure. He also emphasizes the effectiveness and safety of this procedure by sharing real-world cases.
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