1. Rapid point-of-care test for diagnosis of peritonitis in peritoneal dialysis patients.
- Author
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Htay H, Choo JCJ, Huang DH, Jayaballa M, Johnson DW, Koniman R, Oei EL, Suai TC, Wu SY, and Foo MWY
- Subjects
- Humans, Male, Female, Middle Aged, Sensitivity and Specificity, Matrix Metalloproteinase 8 analysis, Aged, Predictive Value of Tests, Singapore epidemiology, Kidney Failure, Chronic therapy, Kidney Failure, Chronic complications, Peritonitis diagnosis, Peritonitis etiology, Peritoneal Dialysis adverse effects, Interleukin-6 blood, Point-of-Care Testing
- Abstract
Background: Periplex
® is a rapid point-of-care test based on the detection of interleukin-6 (IL-6) or matrix metalloproteinase-8 (MMP-8) to diagnose peritonitis in peritoneal dialysis (PD) patients., Methods: This single-centre study was conducted in Singapore General Hospital from 2019 to 2022. The study recruited PD patients suspected of having peritonitis. Periplex was performed at the presentation and recovery of peritonitis. Primary outcomes were sensitivity and specificity of Periplex at presentation. The positive and negative predictive values of tests were also performed., Results: A total of 120 patients were included in the study. The mean age was 60.9 ± 14.9 years, 53% were male, 79% were Chinese and 47.5% had diabetes mellitus. Periplex was positive in all patients with peritonitis ( n = 114); sensitivity of 100%; 95% confidence interval (CI): 100-100%. Periplex was falsely positive in three patients with non-infective eosinophilic peritonitis, resulting in a low specificity of 50%; 95% CI: 41.1-59.0%. Periplex had a positive predictive value of 97.4% and a negative predictive value of 100%. During recovery from peritonitis, Periplex had high specificity (93.6%) and negative predictive value (98.7%) to indicate the resolution of infection. MMP-8 was more sensitive than IL-6 in detecting peritonitis. Periplex was positive in all patients with peritonitis regardless of the types of PD solutions used., Conclusions: Periplex had high sensitivity, and positive and negative predictive values in the diagnosis of peritonitis can be considered as a screening tool for peritonitis. Given its high specificity and negative predictive value, it may also be used to document the resolution of peritonitis., Competing Interests: Declaration of conflicting interestsThe author(s) declared the following potential conflicts of interest with respect to the research, authorship, and/or publication of this article: HH has received consultancy fees, speaker’s honoraria and travel sponsorships from Baxter Healthcare and consultancy fees and travel sponsorships from AWAK Technologies, speaker’s honoraria from Fresenius Medical Care, grants from Johnson & Johnson Company, grants from SingHealth NIG, outside the submitted work, and MWYF has received grants from National Medical Research Council for the study; consultancy fees and speaker’s honoraria and travel sponsorships from Baxter Healthcare, consultancy fees and travel sponsorships from AWAK Technologies. DWJ has received consultancy fees, research grants, speaker’s honoraria and travel sponsorships from Baxter Healthcare and Fresenius Medical Care, consultancy fees from Astra Zeneca and AWAK, speaker’s honoraria and travel sponsorships from ONO and travel sponsorships from Amgen. The other authors have nothing to disclose.- Published
- 2024
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