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  • Title: Intraperitoneal cefazolin and ceftazidime during short-dwell exchange in peritoneal dialysis patients with peritonitis.
    Author: Triyawatanyu P, Chariyavilaskul P, Phaisal W, Peerapornratana S, Kanjanabuch T, Praditpornsilpa K, Katavetin P.
    Journal: Perit Dial Int; 2020 Mar; 40(2):179-184. PubMed ID: 32063189.
    Abstract:
    BACKGROUND: Intraperitoneal (IP) cefazolin and ceftazidime during the short-dwell (≤ 2 h) automated exchange has been shown to provide adequate dialysate and plasma concentrations for up to 24 h in peritoneal dialysis (PD) patients without peritonitis. This study aimed to evaluate plasma and dialysate concentration of this novel IP cefazolin and ceftazidime regimen during the first 24 h in PD patients with peritonitis. METHODS: Cefazolin and ceftazidime (2500 mg each) were added to in to a 5-L bag containing 2.5% of dextrose PD fluid which was placed on the warmer of PD cycling machine. Patients underwent five exchanges of 2-L PD fluid over 10 h by the PD cycling machine without last fill or additional dwell. Plasma samples and dialysate samples were collected over 24 h. Cefazolin and ceftazidime concentrations in plasma and dialysate were determined by high-performance liquid chromatography. RESULTS: Seven PD patients with peritonitis participated in this study. Plasma cefazolin and ceftazidime levels increased substantially within the first few hours, peaked around 6-10 h, and sustained well above the target plasma concentrations (10 mg L-1 for cefazolin and 16 mg L-1 for ceftazidime) until 24 h. Dialysate cefazolin and ceftazidime levels were sustained above the target peritoneal concentrations (2 mg L-1 for cefazolin and 8 mg L-1 for ceftazidime) throughout the PD session except in some samples which the antibiotics levels were unusually low, probably from beta-lactamase activity. CONCLUSIONS: IP cefazolin and ceftazidime during the short-dwell automated exchange could provide adequate dialysate and plasma concentrations in peritonitis patients. This novel regimen is a promising regimen for peritonitis in PD patients.
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