Introduction Transradial access (TRA) for endovascular procedures has gained popularity in neurointerventional society. The RIST 079 Radial Access System (Medtronic) is the first available device dedicated to TRA. To the best of our knowledge, we present the largest cohort of patients treated with RIST TRA.
Aim of Study To evaluate the application, safety, and limitations of the RIST catheter.
Methods Neurointerventional procedures in a single institution from April 2021 to April 2023 with TRA with RIST catheter were retrospectively evaluated. Information on demographic, indications, procedure type, complications, and success rate, defined as the ability to finish the procedure without switching to a different access site or catheter, were reviewed.
Results 237 Patients underwent 253 neurointerventional procedures. Right radial artery was used in most cases (98.4%); classic TRA was slightly more frequent than distal (57.3% vs. 42.7%). The most common procedure was stent-assisted coiling (24.5%), followed by simple coiling (17.4%), mechanical thrombectomy (15.4%), and arterio-venous malformation embolization (13.4%). The success rate was 97.2%, with 5 patients requiring conversion to femoral access, and 2 patients requiring additional femoral access. There were 3 access site complications: 1 forearm hematoma and 2 radial artery spasms. There were also 2 other procedural complications: 1 small ischemic infarct and 1 intracerebral hemorrhage.
Conclusion RIST Radial Access System is an effective tool for various neurointerventions. With a low conversion rate, it provides safer access than the femoral approach. Soon, like in cardiology, TRA, especially with RIST catheter, may become the standard of care in interventional neurosurgery.
Disclosure of Interest Nothing to disclose
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