Feature | November 06, 2012

Trial Finds Benefits Using Radial vs. Femoral Access in STEMI

Results of the STEMI-RADIAL trial presented at TCT 2012

November 6, 2012 — A study has found several benefits in using the radial artery in the arm as the entry point for angioplasty or percutaneous coronary intervention (PCI) compared to the femoral artery in the leg. Results of the STEMI-RADIAL trial were presented at the 24th annual Transcatheter Cardiovascular Therapeutics (TCT) scientific symposium, sponsored by the Cardiovascular Research Foundation.

Recent data have demonstrated better clinical outcomes in patients undergoing primary PCI by the radial approach compared to the femoral approach. However, the experience of operators with the radial approach in previous trials has been variable. In the STEMI-RADIAL trial, investigators examined the net clinical benefit of using the radial versus femoral approach in patients presenting within 12 hours of symptom onset of acute ST-elevation myocardial infarction (STEMI). All investigators were high-volume (>200 PCI/year) operators with significant experience in the radial approach (>80 percent cases/year).

STEMI-RADIAL was a randomized, national, multicenter, parallel group trial conducted in 707 patients at four high volume centers. Patients eligible for both access sites without cardiogenic shock were randomized to the radial or femoral access approach. The primary endpoint was the cumulative incidence of major bleeding and vascular access site complications (requiring intervention) at 30 days.  Secondary endpoints included major adverse cardiovascular events (MACE: death, reinfarction and stroke), technical success, access site failure, procedural and fluoroscopy times, contrast volume, intensive care stay and target lesion revascularization.

The primary endpoint of major bleeding or access site complications occurred in 7.2 percent of the femoral access patients and 1.4 percent of the radial access patients (p=0.0001). The rate of MACE at 30 days was 4.2 percent in the femoral access group, and 3.5 percent in the radial access group (p=0.7).

“In patients with STEMI undergoing PCI within 12 hours, the radial approach was associated with a significantly lower incidence of major bleeding and access site complications, resulting in a significantly better net clinical benefit,“ said lead investigator Ivo Bernat, M.D., Ph.D., assistant professor of medicine at University Hospital Pilsen in the Czech Republic. “Moreover, the radial approach reduced significantly ICU stays and contrast volume compared to the femoral approach. Results of this trial support the use of the radial approach in primary PCI in high volume centers as a first choice.“

The trial was supported by the Charles University Research Fund, and was a project of the Ministry of Health, Czech Republic for development of University Hospital Pilsen. Bernat reported no financial conflicts of interest.

For more information: www.crf.org

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