Vascular Complications of Percutaneous Coronary Intervention Via Distal Radial Artery Approach in Patients With Acute Myocardial Infarction With and Without ST-Segment Elevation.

Objectives: Distal radial artery (DRA) access is a novel alternative to conventional radial artery access for coronary catheterization. This study investigated the incidence of vascular complications with percutaneous coronary intervention (PCI) from DRA access among patients with acute myocardial infarction (AMI) with and without ST-segment elevation.

Methods: Between April 2018 and October 2019, a total of 131 consecutive patients underwent primary PCI for AMI, among whom DRA access was used in 116 (88.5%), comprising 77 with ST-segment elevation myocardial infarction (STEMI) and 39 with non-ST-segment elevation myocardial infarction. The mean patient age was 70.4 ± 12.9 years and 71.6% were male. Right DRA was used in 110 patients (94.8%). A 5 or 6 Fr sheath was used in the PCI procedure. Patient backgrounds, procedural characteristics, and procedural complications were retrospectively analyzed. Patency of the radial artery was examined using Doppler ultrasound.

Results: Minor bleeding (Bleeding Academic Research Consortium [BARC] 2) was observed in 2 patients (1.7%) while no major bleedings (BARC 3a, 3b, 3c, and 5) were observed. On the Early Discharge After Transradial Stenting of Coronary Arteries Study (EASY) hematoma scale, a grade III hematoma (≥10 cm) was observed in 1 patient (0.9%), and no patients with hematoma were > grade IV. Doppler ultrasound of the radial artery was performed on 95 patients (81.9%). The incidence of radial artery occlusion was 1.1% (n = 1). The door-to-balloon time for STEMI patients was 40.0 ± 30.8 minutes.

Conclusions: The current study demonstrated that DRA access was associated with a low incidence of access-site complications within optimal revascularization time among patients with AMI who underwent PCI.