Abstract

Although the transradial approach has reduced vascular complications, radial artery occlusion is still considered one of its limitations. The aim of this study was to evaluate radial artery patency after transradial cardiac catheterization. Prospective cohort study of patients undergoing cardiac catheterization using the transradial approach. Procedures were performed with 5 F and 6 F catheters with the administration of 5,000 IU of heparin and 200 μg of nitroglycerin through the radial sheath. Radial artery blood flow was assessed by Doppler before, immediately after bandage removal and 7 days after the procedure. The study included 120 patients of which 42.5% were males, with 59.1 ± 10.6 years of age, 25.8% were diabetic, weighing 77.4 ± 14.2 kg and height of 166 ± 8.1 cm. The number of catheters used was 2.3 ± 0.5 per patient, 55.8% using 6 F sheaths. The duration of the procedure was 14.8 ± 5.2 minutes, the puncture time was 129.7 ± 124.1 seconds, and the fluoroscopy time was 4 ± 2.3 minutes. Radial spasm and crossover to the femoral technique occurred in 20.8% and 1.7% of the procedures, respectively. Significant hematoma was observed in 2.4% of the patients. At 1 week of follow-up, arterial occlusion was observed in 1.7%, and reduced blood flow in 26.7% of the patients. Radial artery occlusion following diagnostic procedure using the transradial approach is rare and should not be considered as an important technique limitation. Avaliação da Patência da Artéria Radial após Cateterismo Transradial Embora a abordagem transradial tenha reduzido as complicações vasculares, a oclusão da artéria radial ainda é uma de suas limitações. O objetivo deste estudo foi avaliar a patência da artéria radial após cateterismo cardíaco transradial. Estudo de coorte prospectivo com pacientes submetidos a cateterismo cardíaco pela via transradial. Os procedimentos foram realizados com cateteres 5 F ou 6 F, com a administração de 5.000 U de heparina e 200 μg de nitroglicerina através do introdutor radial. O fluxo sanguíneo na artéria radial foi avaliado com o uso do Doppler antes, imediatamente após a retirada do curativo e 7 dias depois do procedimento. O estudo incluiu 120 pacientes, dos quais 42,5% eram do sexo masculino, com idade de 59,1 ± 10,6 anos, 25,8% eram diabéticos, com peso de 77,4 ± 14,2 kg e altura de 166 ± 8,1 cm. O número de cateteres utilizados foi de 2,3 ± 0,5 por paciente, 55,8% usando introdutores 6 F. A duração do procedimento foi de 14,8 ± 5,2 minutos, o tempo de punção foi de 129,7 ± 124,1 segundos e o tempo de fluoroscopia, de 4 ± 2,3 minutos. Espasmo e crossover para técnica femoral ocorreram em 20,8% e 1,7% dos procedimentos, respectivamente. Hematoma significativo ocorreu em 2,4% dos pacientes. Em uma semana de acompanhamento, observaram-se oclusões da artéria em 1,7% e redução do fluxo sanguíneo em 26,7% dos pacientes. A oclusão da artéria radial pós-procedimento diagnóstico utilizando a via de acesso radial é infrequente e não deve ser considerada limitação importante da técnica.

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