Statins in the prevention of contrast induced acute kidney injury

Earlier I linked a couple of studies that showed promise. Now here's a new meta-analysis that shows benefit:

A systematic review and meta-analysis was performed including randomized controlled trials of short-term high-dose statins (compared with either low-dose statin or placebo) for CIAKI prevention in patients undergoing coronary angiography. Study-specific odds ratios (ORs) were calculated, and between-study heterogeneity was assessed using the I2 statistic. We used a random-effects model meta-analysis to pool the OR. Twelve RCTs, including 5,564 patients, were included. CIAKI occurred in 94 of 2,769 patients (3.4%) pretreated with high-dose statins and 213 of 2,795 patients (7.6%) in the low-dose or no-statin group (OR 0.43, 95% confidence interval [CI] 0.33 to 0.55, I2 = 19%, p less than 0.001). Subgroup analysis showed that the occurrence of CIAKI did not differ in patients with diabetes (OR 0.60, 95% CI 0.43 to 0.85, I2 = 0%, p = 0.004) or in patients with documented renal insufficiency (creatinine clearance les than 60 ml/min/m2; OR 0.66, 95% CI 0.45 to 0.96, I2 = 0%, p = 0.03). In conclusion, pretreatment with high-dose statins, compared with low-dose statins or placebo, in patients undergoing coronary angiography reduces the incidence of CIAKI. This benefit was seen irrespective of the presence of diabetes and chronic kidney disease. Future studies should identify optimum dosing protocols for each statin.