Outcomes of Dorsal Distal Radial, Radial, and Ulnar Artery Percutaneous Coronary Intervention With Ultrasound Guidance in Acute Myocardial Infarction.

Ultrasound utilization during access enables precise vessel cannulation. We sought to evaluate the outcomes of ultrasound guided dorsal distal radial artery (DDRA), radial, and ulnar cardiac catheterization (CC) and percutaneous coronary intervention (PCI). We performed a prospective observational study of 224 patients (58 ± 12 years) at an academic medical center from October 2016 to March 2020 (median follow-up of 13 months) and compared the outcomes of ultrasound guided DDRA, ulnar, or radial artery CC and PCI. Groups were divided into DDRA (n = 18, 8.0%), ulnar (n = 94, 42.0%) and radial access (n = 112, 50.0%). Primary endpoints included the number of access attempts and conversion to femoral access. Secondary endpoints included all-cause mortality, cardiac mortality, acute myocardial infarction (AMI), stroke, repeat revascularization, stent thrombosis, in-stent restenosis, and access site complications. In the primary endpoints, no significant difference was found amongst groups in the number of access attempts (P = 0.272) or conversion to femoral access (P = 0.381). In the radial group (59 ± 11 years, median follow-up of 16 months), 2 cardiac mortalities (1 lymphocytic myocarditis, 1 AMI) and 2 noncardiac mortalities occurred. None of the secondary endpoints occurred in the DDRA (66 ± 17 years, median follow-up of 13 months) or ulnar group (56 ± 11 years, median follow-up of 14 months). DDRA and ulnar PCI was safe and efficacious with no complications. Femoral conversion or the number of access attempts was not different between DDRA, ulnar, or radial. Therefore, DDRA and ulnar are viable alternatives for PCI, which can preserve radial for future use.