Does the routine collection of PD fluid cultures 2 weeks after the completion of antibiotics for PD peritonitis detect relapsing or recurrent peritonitis more effectively than waiting for clinical signs/symptoms of peritonitis to develop in the absence of repeat cultures? What are the recommendations around this practice?

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Danielle F, Nurse from Canada asked
Does the routine collection of PD fluid cultures 2 weeks after the completion of antibiotics for PD peritonitis detect relapsing or recurrent peritonitis more effectively than waiting for clinical signs/symptoms of peritonitis to develop in the absence of repeat cultures? What are the recommendations around this practice?

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Doctor (Canada) February 8, 2019

There is no evidence that doing routine dialysate cultures is of benefit after successful treatment of a peritonitis episode. Typically, if there are still organisms in the dialysate, the patient will have ongoing signs and symptoms of peritonitis (cloudy fluid, abdominal pain, etc). If they are free of symptoms and their fluid is clear, the yield of routine fluid cultures would be extremely low. 
 

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