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      A Simple and Effective Regimen for Prevention of Radial Artery Spasm during Coronary Catheterization

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          Radial artery spasm occurs frequently during the transradial approach for coronary catheterization. Premedications with nitroglycerin and verapamil have been documented to be effective in preventing radial spasms. Verapamil is relatively contraindicated for some patients with left ventricular dysfunction, hypotension and bradycardia. We would like to know whether nitroglycerin alone is sufficient for the prevention of radial artery spasm. We conducted a randomized controlled trial to compare the spasmolytic effect between heparin alone, heparin plus nitroglycerin and heparin plus nitroglycerin and varapamil during transradial cardiac catheterization. In this study, a total of 406 patients underwent transradial cardiac catheterization and intervention. After successful cannulation and sheath insertion of radial arteries, 133 patients in group A received 3,000 units of heparin, 100 µg of nitroglycerin and 1.25 mg of verapamil via sheath, 135 patients in group B received 3,000 units of heparin and 100 µg of nitroglycerin, and 93 patients in group C received 3,000 units of heparin. Five patients in group A (3.8%), 6 patients in group B (4.4%) and 19 patients in group C (20.4%) showed radial spasms. There is no statistically significant difference between groups A and B (p = 0.804), but there are strong statistically significant differences between groups A and C (p = 0.001) and groups B and C (p = 0.003). Intra-arterial premedication with 100 µg nitroglycerin and 3,000 units of heparin is effective in preventing radial spasms during transradial cardiac catheterization.

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          Most cited references 22

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          A randomized comparison of percutaneous transluminal coronary angioplasty by the radial, brachial and femoral approaches: the access study.

          This study sought to compare procedural and clinical outcomes of percutaneous transluminal coronary angioplasty (PTCA) performed with 6F guiding catheters introduced through the radial, brachial or femoral arteries. Transradial PTCA has been demonstrated to be an effective and safe alternative to transfemoral PTCA; however, no randomized data are currently available. A randomized comparison between transradial, transbrachial and transfemoral PTCA with 6F guiding catheters was performed in 900 patients. Primary end points were entry site and angioplasty related. Secondary end points were quantitative coronary analysis after PTCA, procedural and fluoroscopy times, consumption of angioplasty equipment and length of hospital stay. Successful coronary cannulation was achieved in 279 (93.0%), 287 (95.7%) and 299 (99.7%) patients randomized to undergo PTCA by the radial, brachial and femoral approaches, respectively. PTCA success was achieved in 91.7%, 90.7% and 90.7% (p = NS) of patients, with 88.0%, 87.7% and 90.0% event free at 1-month follow-up, respectively (p = NS). Major entry site complications were encountered in seven patients (2.3%) in the transbrachial group, six (2.0%) in the transfemoral group and none in the transradial group (p = 0.035). Transradial PTCA led to asymptomatic loss of radial pulsations in nine patients (3%). Procedural and fluoroscopy times were similar, as were consumption of guiding and balloon catheters and length of hospital stay ([mean +/- SD] 1.5 +/- 2.5, 1.8 +/- 3.8 and 1.8 +/- 4.2 days, respectively). With experience, procedural and clinical outcomes of PTCA were similar for the three subgroups, but access failure is more common during transradial PTCA. Major access site complications were more frequently encountered after transbrachial and transfemoral PTCA.
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            Effect of transradial access on quality of life and cost of cardiac catheterization: A randomized comparison.

            Transradial access is a recently developed alternative for diagnostic cardiac catheterization. Its effects on quality of life after the procedure, patient preference, and cost are unknown. We performed a randomized single-center trial in which 99 patients underwent transfemoral and 101 underwent transradial diagnostic cardiac catheterization. Quality of life was measured with the SF-36 and visual analog scales at baseline, 1 day, and 1 week. Patients were examined at 1 day and at 1 week after for complications. Costs were measured prospectively. One patient in the femoral group and 2 in the radial group crossed over to the alternative access site. There were no major access site complications. One patient in the transfemoral group had a minor stroke. Transradial catheterization significantly reduced median length of stay (3.6 vs 10.4 hours, P <.0001). Over the first day after the procedure, measures of bodily pain, back pain, and walking ability favored the transradial group (P <.05 for all comparisons). Over the week after the procedure, changes in role limitations caused by physical health, bodily pain, and back pain favored the transradial group (P <.05 for all comparisons). There was a strong patient preference for transradial catheterization as well (P <. 0001). Transradial catheterization led to significant reductions in bed, pharmacy, and total hospital costs ($2010 vs $2299, P <.0001). Among patients undergoing diagnostic cardiac catheterization, transradial access leads to improved quality of life after the procedure, is strongly preferred by patients, and reduces hospital costs.
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              Left radial approach for coronary angiography: results of a prospective study.

              Although radial approach has been shown to be feasible for coronary angiography, angioplasty, and even stent placement, there have been no prospective evaluations of ease and safety of left radial approach for coronary angiogram. We examined procedural duration and success as well as complications in 415 consecutive patients. Radial artery occlusion was assessed immediately post-procedure and at 2 month follow-up using echo-Doppler measurements. Procedure failure rate was 9%, mean time for sheath insertion was 4.7 +/- 4.7 min, and mean procedure duration was 19.1 +/- 8.2 min. No major complications occurred. Asymptomatic radial artery occlusion was noted in 71% of the first 49 patients, decreased to 24% in the next 119 receiving 2,000-3,000 units of heparin, and to 4.3% in the last 210 receiving 5000 (p < 0.05). Comparison with the femoral approach in the same laboratory suggested that the radial approach took longer, but provided similarly high-quality results without great difficulty in coronary cannulation. Hence, the left radial approach for coronary angiography (with heparin administration) allows immediate ambulation and may be especially useful for outpatients and when the femoral approach is not possible.

                Author and article information

                S. Karger AG
                November 2005
                24 November 2005
                : 105
                : 1
                : 43-47
                Section of Cardiology, Department of Internal Medicine, Buddhist Tzuchi Dalin General Hospital, Chia-Yi, Taiwan, ROC
                89246 Cardiology 2006;105:43–47
                © 2006 S. Karger AG, Basel

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                Tables: 1, References: 25, Pages: 5
                Original Research


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