INFEXIT: Implementing vaginal disinfection prior to cesarean section

To evaluate the rate of implementation after adding vaginal disinfection to the cesarean section protocol and its effect on post cesarean infections and hospital readmissions.

This is an intervention study where two groups were compared. Women the year before (n = 1384) and one year following (n = 1246) the addition of vaginal disinfection, with povidone-iodine 1% prior to the cesarean section, to the protocol. Primary outcome was the rate of implementation. Secondary outcomes were the rates of endometritis, wound infection and postoperative fever. With the effect expressed in the number of hospital readmissions.

The implementation rate was 85.6%. Intention-to-treat analysis showed endometritis rates of 2.0% versus 1.1% (p = 0.07). For women with preoperative ruptured membranes there was a significant decrease in endometritis, from 3.4% to 1.3% (p = 0.02). Per-protocol analysis showed endometritis rates of 2.0% to 1.0% (p = 0.05). Women with ruptured membranes, 3.4% versus 1.3% (p = 0.02), and women who were in the second stage of labor, 4.7% versus 0.0% (p = 0.01), had a significant decrease in endometritis. For wound infection and postoperative fever rates were similar. The decrease of infections had a significant effect on hospital readmissions, 27 versus 10 (p = 0.04).

The implementation of this quality improvement measure shows to be adequate as the vast majority of women undergoing a cesarean received vaginal disinfection. Vaginal disinfection showed a declining trend of endometritis and postoperative fever and for women with broken membranes prior to cesarean section the decrease in endometritis was significant. These beneficial effects have led to a statistical and clinically relevant decrease in hospital readmissions and thus cost reduction.