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Acute kidney injury appears to be an increasing problem in cardiac and vascular surgeries, researchers found.

Severe cases marked by need for acute dialysis after major elective surgery -- although rare -- rose year over year from a rate of 0.2 percent in 1995 to 0.6 percent in 2009, Amit X. Garg, MD, PhD, of Western University in London, Ontario, and colleagues reported.

The increase was primarily in cardiac and vascular surgeries in the population-based study appearing online in the CMAJ.

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