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  • Title: Incidence and predictors of radial artery spasm at the beginning of a transradial coronary procedure.
    Author: Gorgulu S, Norgaz T, Karaahmet T, Dagdelen S.
    Journal: J Interv Cardiol; 2013 Apr; 26(2):208-13. PubMed ID: 23190016.
    Abstract:
    OBJECTIVES: Our aim was to establish the frequency of radial artery spasm (RAS) and its predictors at the beginning of a transradial approach (TRA). METHODS: This was a single-center prospective study. A total of 1,722 consecutive patients undergoing their first transradial coronary procedure were recruited. After radial artery puncture, a hydrophilic sheath was used to complete arterial puncture, then 500 μg glycerol trinitrate and 2.5 mg verapamil were injected into radial artery along the sheath. After retrograde radial arteriography spasm was defined angiographically as a stenosis greater than 25%. Patient demographics, procedural data such as total procedural duration, the number of catheters and guidewires used, the amount of contrast media usage, dose area product (DAP) and fluoroscopy time, and vascular complications were recorded. RESULTS: The overall spasm incidence was 10.3%. The procedural success rate was lower in patients with spasm than in patients without spasm (80% vs. 95.7%, P < 0.001). The patients with spasm were older (mean age 63.9 ± 9.4 years vs. 60.0 ± 11.2 years, P < 0.001) and more commonly female (51.3% vs. 34.4%, P < 0.001). Spasm was more common in hypertensive patients (66% vs. 56%, P < 0.009). Surprisingly, smoking was less common in patients with spasm (17% vs. 29%, P < 0.001). Multiple logistic regression analysis showed that female gender (OR = 1,524, 95% CI: 1.033-2.248, P = 0.034) was the only independent predictor of RAS at the beginning of the procedure. CONCLUSIONS: The incidence of RAS was 10,3%, and female gender was the sole independent predictor of RAS at the very beginning of the procedure in patients undergoing a TRA.
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