RESUMO
Objective To investingate the possible predictory of radial artery occlusion(RAO) after transradial approach and its preventive measures.Methods We prospectively assessed the occurrence of RAO in 669 consecutive patients undergoing transradial approach and 63 patients were excluded from the final study (24of them did not meet the inclusion criterium,31 patients converted to other artery approaches,6 patients lost clinical follow-up and 2 patients died).Artery occlusion was evaluated with Doppler ultrasound in 2 days and 1 year after the intervention.The risk factors of RAO including sex,body mass index (BMI),smoking,hypertension,diabetes,dyslipidemia,puncture site,vessel spasm,and artery diameter/ sheath ratio were evaluated using a multivariate model analysis.Results Among the 606 patients,RAO occurred in 56 patients.There were no differences in sex,age,BMI,coronary lesions,rates of vessel spasm,vessel length,medication given and operation time between the 2 group of patients with vs without ROA (all P＞0.05).Univariate logistic analysis showed puncture site at 0 cm away from radial styloid and artery diameter/sheath ratio ≤ 1 were possible risk factory and puncture site ＞ 4 cm from radial styloid was possible protective factor.Further multivariate analysis showed the odds ratio (OR) for occlusion risk at 0 cm and 1 cm were 9.65 (P=0.033) and 8.90 (P=0.040),respectively.The RAO occurred in the ratio of the arterial diameter to the sheath diameter ≤ 1 (OR=2.45,P=0.004).Conclusions Distal puncture sites (0-1 cm away from the radius styloid process) can lead to a higher rate of RAO.