Abstract
Background
Peritonitis is a frequent and serious complication of peritoneal dialysis (PD). Whether low immunoglobulin level is associated with PD-related peritonitis is unknown.
Methods
We conducted a prospective study to assess whether immunoglobulin levels at PD onset could predict the occurrence of peritonitis. All patients starting peritoneal dialysis between 01/2005 and 12/2010 at the University hospital of Besançon, France, were included in the study.
Results
Of 240 consecutive PD patients enrolled (mean follow-up 25 ± 12 months), 76 (32 %) had at least one episode of peritonitis. Mean immunoglobulin (Ig)G level at PD start was lower in patients who subsequently experienced peritonitis (7.9 + 3.4 vs. 9.7 + 3.4 g/l, p = 0.005). An increased IgG level at PD onset was associated with a reduced risk of peritonitis [hazard ratio (HR) 0.88, 95 % confidence interval (CI) 0.80–0.97 for each increase of 1 g/l in IgG, p = 0.008]. IgG level ≤6.4 g/l (“low IgG”) was the best predictive value for the occurrence of subsequent peritonitis: 52 patients (24 %) had low IgG levels. At multivariate analysis, both low IgG level (HR 2.49, 95 % CI 1.32–4.69, p = 0.005) and diabetes (HR 2.78, 95 % CI 1.49–5.20, p = 0.001) were predictive of the occurrence of peritonitis.
Conclusion
Low IgG levels predict the occurrence of PD-related peritonitis. Randomized studies should determine whether such patients could benefit from intravenous immunoglobulin administration.
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The authors have no conflict of interest as defined by Journal of Nephrology.
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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
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Informed consent was obtained from all individual participants included in the study.
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Courivaud, C., Bardonnet, K., Crepin, T. et al. Serum immunoglobulin G levels and peritonitis in peritoneal dialysis patients. J Nephrol 28, 511–515 (2015). https://doi.org/10.1007/s40620-015-0176-2
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DOI: https://doi.org/10.1007/s40620-015-0176-2