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[Evolution of contrast nephropathy in patients with chronic kidney disease undergoing a percutaneous coronary intervention].

INTRODUCTION
Current epidemiological transition from infectious to chronic-degenerative diseases is more and more demanding procedures requiring contrast medium, which turns out to be a risk factor for acute renal major damage in patients with chronic kidney disease. The aim of this article is to describe the frequency and evolution of Contrast-induced nephropathy in ambulatory patients with chronic kidney disease undergoing percutaneous coronary intervention.


METHODS
We included patients with renal damage at the time of exposure to the contrast medium. They took a risk and were adjusted prevention measures follow at 48 hrs. Statistical analysis was performed using descriptive statistics.


RESULTS
From 1236 cardiac catheterization procedure performed, 32 patients met the inclusion criteria. The 96.87% had chronic degenerative diseases such as diabetes or hypertension, overweight and obesity were a constant in 65.62% of cases, in 21.7% of patients the contrast dose was slightly higher than recommended. The 6.3% developed contrast-induced nephropathy with elevated creatinine greater than 25% at 48 hours after the procedure, despite preventive measures, however none of them required renal replacement.


CONCLUSIONS
The frequency of contrast medium-induced nephropathy in patients with high risk factors was lower than that reported in the literature; this may correspond to that in all cases nephrology assessment was performed before the procedure.