There was also evidence that RIPC reduced the incidence of postoperative atrial fibrillation by @ % ( @ % RIPC vs @ % control ; p = @ ) and decreased the incidence of acute kidney injury by @ % ( @ % RIPC vs @ % control ; p = @ ) , and intensive care unit stay by @day ( @ days RIPC ( CI @ to @ ) vs @ days control ( CI @ to @ ) ; p = @ ) .