Incidence of and Risk Factors for Contrast-Induced Nephropathy After Cardiac Catheterization in Japanese Patients

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Background: Contrast-induced nephropathy (CIN) is the third leading cause of all hospital-acquired renal insufficiency, accounting for 10%, and is associated with increased long-term mortality. The incidence of and risk factors for CIN after cardiac catheterization in Japanese patients are, however, unknown at present. Methods and Results: The 1,157 consecutive patients who underwent cardiac catheterization at Kyoto University Hospital from January 2003 to December 2004 were retrospectively examined. The incidence of CIN defined as an absolute increase in serum creatinine (SCr) ≥0.5 mg/dl, a relative ≥25% increase in SCr, and either an absolute or relative increase after cardiac catheterization were 4.0%, 13.8%, and 13.9%, respectively. Multivariate logistic models revealed that preexisting renal insufficiency and the use of high-volume contrast were independently associated with an absolute increase in SCr ≥0.5 mg/dl. Female gender, underweight, and high-volume contrast usage were independently associated with a relative ≥25% increase and either an absolute or relative increase in SCr. Conclusions: Although the incidence of and risk factors for CIN after cardiac catheterization varied in the study population according to the definition of CIN, careful attention should be paid to patients who have risk factors identified by each definition of CIN.
社団法人　日本循環器学会の論文
2009-07-20