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Background This study investigated the safety and efficacy of coronary angiography (CAG) and percutaneous coronary intervention (PCI) via distal transradial artery access (d-TRA). Methods For this single-centre prospective cohort study, a total of 1066 patients who underwent CAG or PCI procedures from September 2019 to November 2020 were included. Patients were divided into two groups: the d-TRA group (346) and the conventional transradial artery access (c-TRA) group (720) based on access site. A total of 342 pairs of patients were successfully matched using propensity score matching (PSM) for subsequent analysis. Results No significant differences in puncture success rate, procedural method, procedural time, sheath size, contrast dosage or fluoroscopy time were noted between the two groups. The puncture time in the d-TRA group was longer than that in the c-TRA group ( P  &lt; 0.01), and the procedure success rate was lower than that in the c-TRA group (90.94% vs. 96.49%,  P  = 0.01). The haemostasis time in the d-TRA group was shorter than that in the c-TRA group ( P  &lt; 0.01), and the visual analogue scale (VAS) was lower than that in the c-TRA group ( P  &lt; 0.01). In addition, the prevalence of bleeding and haematoma in the d-TRA group was lower than that in the c-TRA group (1.75% vs. 7.31%,  P  &lt; 0.01; 0.58% vs. 3.22%,  P  = 0.01, respectively). No significant difference in the incidence of numbness was noted between the two groups. No other complications were found in two groups. Conclusion d-TRA is as safe and effective as c-TRA for CAG and PCI. It has the advantages of improved comfort and fewer complications. Trail registration  Chinese Clinical Trial Registry, ChiCTR1900026519.

bmc cardiovascular disorders

Safety and efficacy of coronary angiography and percutaneous coronary intervention via distal transradial artery access in the anatomical snuffbox: a single-centre prospective cohort study using a propensity score method