Topical nitroglycerin and lidocaine to dilate the radial artery prior to transradial cardiac catheterization: A randomized, placebo-controlled, double-blind clinical trial: The PRE-DILATE Study

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• 作者：Anna T. Beyer ; Ramford Ng ; Amardeep Singh ; Jeffrey Zimmet ; Kendrick Shunk ; Yerem Yeghiazarians ; Thomas A. Ports ; Andrew J. Boyle
• 关键词：Transradial ; Cardiac catheterization ; Radial artery ; Vasodilation
• 刊名：International Journal of Cardiology
• 出版年：2013
• 出版时间：3 October, 2013
• 年：2013
• 卷：168
• 期：3
• 页码：2575-2578
• 全文大小：369 K

文摘

Background/Objectives

Transradial access (TRA) is being increasingly used for both diagnostic and interventional cardiac procedures. Use of TRA offers many advantages: decreased bleeding, vascular complications, reduced length of hospital stay, and reduced cost. However, the small size of the radial artery limits the size of the equipment that can be used via this approach. We sought to determine whether pre-procedural administration of topical nitroglycerin and lidocaine increases the size of the radial artery.

Methods

Patients undergoing transradial cardiac catheterization were randomized in a double-blind fashion to a topical combination of nitroglycerin + lidocaine or placebo ointment. The primary endpoint was change in radial artery size. Secondary endpoints included radial artery spasm and radial artery patency.

Results

86 patients were enrolled (43 allocated to treatment group and 43 to placebo group). Patients underwent ultrasound of the radial artery at baseline and before the catheterization. Complications were rare: one hematoma (placebo group) and one radial artery occlusion (placebo group). Baseline demographic and clinical characteristics were similar. The baseline radial artery cross-sectional area (CSA) was similar in both groups (4.95 ¡À 0.24 mm² in placebo group and 5.14 ¡À 0.34 mm² in the treatment group). However, the final CSA decreased to 4.66 ¡À 0.25 mm² in the placebo group and increased to 5.78 ¡À 0.38 mm² in the treatment group (p = 0.02), which corresponded to a decrease in CSA by ? 5.6 ¡À 2.1 % and an increase in CSA by 16.5 ¡À 4.2 % (p < 0.0001), respectively.

Conclusions

Pre-procedural administration of topical mixture of nitroglycerin + lidocaine increases the size of the radial artery in patients undergoing transradial cardiac catheterization.

ClinicalTrials.gov Identifier

NCT01155167