Heart, Lung and Circulation

Predictors of Radial to Femoral Artery Access Crossover During Primary Percutaneous Coronary Intervention for ST-Elevation Myocardial Infarction

Published:March 15, 2022DOI:


      Radial access for primary percutaneous coronary intervention (PCI) in ST elevation myocardial infarction (STEMI) is associated with reduced mortality and bleeding, when compared to femoral access. However, radial access failure may be associated with an increased door-to-device (DTD) time.


      To identify predictors of radial access failure requiring crossover to femoral artery access during primary PCI.


      From 2013 to 2020, 2,256 consecutive patients treated for PPCI at a single tertiary hospital were prospectively recruited into the Victorian Cardiac Outcomes Registry and followed for 30 days. Multivariable logistic regression was used to identify independent predictors of radial to femoral access crossover.


      From 2,256 STEMI patients, primary radial access was used in 1,778 (78.8%), with 171 (9.6%) experiencing radial-to-femoral crossover. Patients with failed versus successful radial access experienced longer DTD times (67 mins, interquartile range [IQR] 46–99 vs 54 mins [IQR 39-78]; p<0.001). Independent predictors of radial-to-femoral access crossover included female sex (Adjusted Odds Ratio [AOR] 2.1, 95% Confidence Interval [CI] 1.4–3.0; p<0.001) and baseline hypertension (AOR 1.5, 95% CI 1.1–2.1; p=0.018).


      In a real-world STEMI registry, almost 1 in 10 patients experienced access crossover from the radial to femoral artery which resulted in longer DTD times. Independent predictors of radial access failure included female sex and baseline hypertension. Knowing which patient characteristics are associated with increased risk of radial artery failure enables catheter laboratory staff to ensure equipment is readily available to maximise successful primary PCI are available.


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      Linked Article

      • Radial First in Primary Percutaneous Coronary Intervention—Ensuring At-Risk Groups Aren’t Left Behind
        Heart, Lung and CirculationVol. 31Issue 8
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          A decade ago, radial artery access for primary percutaneous coronary intervention (PCI) in ST elevation myocardial infarction (STEMI) represented less than 10% of procedures undertaken worldwide [1], with transfemoral access the most common route of procedural access. The landmark Radial Vs femorAL access for coronary angiography and intervention in acute coronary syndrome (ACS) patients (RIVAL) study, published in 2011, was instrumental in changing this paradigm of care. RIVAL demonstrated that radial access was associated with a significantly lower rate of vascular complications as compared to femoral access [2], a finding that has been subsequently confirmed in more recent studies demonstrating less bleeding and reduced mortality [3,4].
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