ScholarWorks@중앙대학교

초록

Background: Distal radial access (DRA) may improve vascular complications, patient comfort, and hemostasis time. DRA-associated operator radiation exposure data is limited. Objectives: This study compared operator radiation exposure between left DRA and right transradial access (TRA). Methods: In this prospective, multicenter, open-label trial, we randomly assigned 1010 patients scheduled to undergo coronary procedures in a 1:1 ratio to either the left DRA or right TRA group. The primary endpoint was operator radiation exposure (μSv) measured using a set of three real-time radiation detection dosimeters on the left wrist, head, and chest by five experienced DRA operators. The secondary endpoints included the incidence of access site crossover, total fluoroscopy time, total procedure time, and total contrast volume used. Results: The primary endpoint analysis included 1001 patients (501, left DRA group; 500, right TRA group). No significant differences were observed in operator radiation exposure to left wrist (4.76 vs. 5.20 μSv, P=0.342), head (2.00 vs 1.83 μSv, P=0.416), and chest (1.28 ± vs. 1.07 μSv, P=0.199) between left DRA and right TRA groups. The incidence of crossover (6.6% vs. 5.2%, P=0.416), fluoroscopy time (4.5 vs. 4.2 min, P=0.673), procedure time (16.0 vs. 15.0 min, P=0.314), and contrast volume (80.0 vs. 80.0 mL, P=0.222) were not significantly different between the two groups. Conclusions: During coronary procedures, no significant differences were observed in the operator radiation exposure at the left wrist, head, and chest between left DRA and right TRA groups.

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