Key result
Prior radial catheterization is linked to ~0.11 mm greater radial artery intima-media thickness.
Why the study?
Radial artery intima-media thickness could be used to study structural vascular adaptation following transradial cardiac catheterization, requiring validation of the reliability and reproducibility of its measurement.
Observational (n=17)
Blinded
High-resolution ultrasound detects post-catheterization radial changes; leaves open effects on vessel patency or repeat access success.
Radial artery (RA) intima-media thickness (IMT) could be used to study short- and long-term structural vascular adaptation following transradial cardiac catheterization. We aimed at assessing the reliability and reproducibility of RA-IMT measurement. Using high-resolution ultrasound, we studied RA-IMT in 17 patients, who underwent transradial catheterization via the right RA 1 to 12 months before. Radial artery intima-media thickness was measured in both arms, with the left RA as control. Repeated measurements were performed by 2 examiners and offline analyses were performed by independent blinded interpreters. Radial artery intima-media thickness was highly reliable with an interclass correlation coefficient (ICC) of 0.911 [0.870-0.939], a high examiner (ICCexaminer 0.910 [0.883-0.931]), and interpreter agreement (ICCinterpreter 0.963 [0.954-0.971]). Intima-media thickness at the radial access site was significantly increased compared with the contralateral RA (0.30 ± 0.056 vs 0.41 ± 0.055 mm, P < .00001). Radial artery intima-media thickness can be measured reliably using high-resolution ultrasound. Initial data suggest that transradial catheterization leads to long-term structural adaption processes.
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Stegemann et al. (2014) conducted an observational in Prior transradial cardiac catheterization (n=17). High-resolution ultrasound measurement of radial artery intima-media thickness (RA-IMT) after transradial catheterization vs. Contralateral uncatheterized left radial artery was evaluated on Reliability of radial artery intima-media thickness (RA-IMT) measurement and difference in RA-IMT between punctured right radial artery and contralateral control radial artery (mm) (ICC 0.911, 95% CI 0.870-0.939, p=<0.00001). High-resolution ultrasound reliably measured radial artery IMT (ICC 0.911) and showed increased IMT at the catheterization site vs control (0.41 vs 0.30 mm, P < 0.00001).
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