 i. Dialysis Prescription Eligible patients will receive a standardized CAPD prescription of 4 daily exchanges with 2 L of 2.5 dextrose dialysate, having dwell periods of 6 hours, 4 hours, 6 hours and 8 hours, respectively, starting 7 days prior to ertapenem administration day. On the study day, patients will perform 2 exchanges at the Hortense and Louis Rubin Dialysis Center. 