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PURPOSE: Many studies show the important factors for better patency rate of the arteriovenous patients. accoding the former articles, age, the site of artery, the presence of diabete or hypertension and the BUN and creatinine level are most important factors. In this article is willing to identify factors that may influence the patency rate of arteriovenous fistulae. METHOD: 125 consecutive patients who underwent internal arteriovenous fistula formation in chonnam national university during 18 months from 1997 to 1998 were reviewed and analyzed. The analyzing factors were age, sex, presence of DM, and hypertension, the level of BUN, Creatinine. RESULT: Overall patency rates of upper arm arteriovenous fistular were 73.3% at one year and 71.5% at the end of two year. BUN level at the time of the fistula formation was another significant factor, and one year patency rates of the groups with BUN less than 50 mg/dL, BUN between 50 and 99 mg/dL, and BUN over 100 mg/dL were, 50.4%, 64.8% and 87.5% respectively, and these differences continued at least for 30 months after the fistular creation (P=0.046). Serum creatinine level also had close relationship with patency and one year patency rate of group with serum creatinine levels less than 5 mg%, 5-9.9 mg%, over the 10 mg% were, 48.5%, 67.5% and 84.5% respectively (P=0.014) Differences in patency rates were also noted according the presence of diabete mellitus (P=0.0397) and the hypertension (P=0.0424) Age is also meaningful factor and significant in this study. CONCLUSION: Among the suspected factors that may influence the patency of fistula, BUN, serum creatinine, and the presence of DM or hypertension were statistically significant on multivariant analysis.
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