AIMS: The aim of this study was to compare incidences of radial artery occlusion (RAO) and spasm (RAS) associated with transradial coronary intervention (TRI) using a 6.5 Fr SheathLess hydrophilic-coated guide catheter (SH-GC) vs. a 6.0 Fr Glidesheath Slender (GSS). METHODS AND RESULTS: We conducted an open-label, single-centre, randomised study to compare radial complications in 600 consecutive patients undergoing elective TRI using 6.5 Fr SH-GC (n=300) or 6.0 Fr GSS (n=300) between 2015 and 2016. The primary endpoint was a composite of RAO evaluated by sonography and symptomatic RAS. The mean diameter of radial arteries was 2.20 mm in both groups; however, the sheath/radial artery diameter (S/RA) ratio was significantly smaller in the SH-GC group (1.03 vs. 1.17, p<0.001). SH-GC was associated with a higher rate of system crossover (1.7% vs. 0.7%, p=0.450) and coronary ostial dissection (1.0% vs. 0.3%, p=0.624), although there were no statistically significant differences. The incidence of major adverse cardiac events was comparable. A lower incidence of RAO and access-site crossover owing to RAS was significantly associated with SH-GC (0.0% vs. 2.0%, p=0.031). Multivariate analysis revealed that a larger S/RA ratio predicted RAO and RAS independently (p=0.007). CONCLUSIONS: The 6.5 Fr SH-GC offers a promising alternative to conventional TRI and is associated with fewer radial complications than the 6.0 Fr GSS.
RCT Entities:
AIMS: The aim of this study was to compare incidences of radial artery occlusion (RAO) and spasm (RAS) associated with transradial coronary intervention (TRI) using a 6.5 Fr SheathLess hydrophilic-coated guide catheter (SH-GC) vs. a 6.0 Fr Glidesheath Slender (GSS). METHODS AND RESULTS: We conducted an open-label, single-centre, randomised study to compare radial complications in 600 consecutive patients undergoing elective TRI using 6.5 Fr SH-GC (n=300) or 6.0 Fr GSS (n=300) between 2015 and 2016. The primary endpoint was a composite of RAO evaluated by sonography and symptomatic RAS. The mean diameter of radial arteries was 2.20 mm in both groups; however, the sheath/radial artery diameter (S/RA) ratio was significantly smaller in the SH-GC group (1.03 vs. 1.17, p<0.001). SH-GC was associated with a higher rate of system crossover (1.7% vs. 0.7%, p=0.450) and coronary ostial dissection (1.0% vs. 0.3%, p=0.624), although there were no statistically significant differences. The incidence of major adverse cardiac events was comparable. A lower incidence of RAO and access-site crossover owing to RAS was significantly associated with SH-GC (0.0% vs. 2.0%, p=0.031). Multivariate analysis revealed that a larger S/RA ratio predicted RAO and RAS independently (p=0.007). CONCLUSIONS: The 6.5 Fr SH-GC offers a promising alternative to conventional TRI and is associated with fewer radial complications than the 6.0 Fr GSS.
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