Peritonitis Bugs

The two most common organisms causing PD-related peritonitis are (1) Staph aureus and (2) Pseudomonas. Certainly there are other causes–for instance fungal peritonitis (one of the indications for immediate catheter removal) and coagulase-negative Staph species (which usually responds…

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Two Landmark PD Studies

How much peritoneal dialysis is enough? This question has been the basis of two major, landmark trials in the peritoneal dialysis community, the CANUSA study (named as such because it looked at PD patients in Canada and the…

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Nuclear Medicine Renal Imaging

There are numerous different types of radionuclide imaging which are used in renal imaging–more commonly in pediatric than in adult patients, and as such my knowledge of these procedures as it pertains to adult nephrology patients has always…

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cystic fibrosis & PKD

In order for renal cysts to grow in patients with polycystic kidney disease, it turns out this requires the pumping of chloride ion into the cyst lumen. This is carried out by the CFTR channel, the same chloride…

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Plasma Exchange for Myeloma?

A question which comes up not infrequently during nephrology fellowship is whether or not to perform pheresis on patients with multiple myeloma. Once very much in vogue, the results of a fairly recent (Annals of Internal Medicine, 2005)…

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Peritoneal Dialysis Color Coding

A quick one before the July 4th Weekend… Peritoneal dialysis solutions are often color-coded based on the dextrose concentration. Dextrose is used as the osmotically-active agent. As it is partially absorbed, patients with diabetes have to watch out…

peritoneal equilibration test (PET)

Not all peritoneal membranes are created equally. The peritoneal equilibration test (PET) is a standardized method for assessing peritoneal membrane function, and is used for tailoring an appropriate, individualized PD prescription. The test is based on the fact…

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