Nephrology
Clinical discussions on kidney disease management, dialysis, transplantation, and electrolyte disorders.
Recent Discussions
How do you time 24-hour urine collections when calculating creatinine clearance for patients receiving thrice-weekly hemodialysis?
Great question. I think no matter how one does it there is bound to be some inaccuracies but it would still be helpful. My routine is to do the urine collection starting the morning after dialysis and ending the morning of dialysis. Then to check serum creatinine before dialysis. Of course, the seru...
Would you initiate urgent start peritoneal dialysis for a patient with uremic symptoms who plans to pursue long-term hemodialysis but currently lacks an AV access, to avoid using a temporary dialysis catheter until they can obtain a functioning AV access?
Interesting question. My answer is no. Although generally I prefer PD, I would not go that route in this case. An AVF could be created now, and it may be ready to use in 2-3 months. Although a PD catheter could potentially be inserted and used even within the next 48 hours, the patient will need to ...
What factors influence your decision to start salt tablets, urea, or a vaptan first in the management of a patient diagnosed with SIADH?
In patients with SIADH, free water intake has to be less than the urinary electrolyte-free water clearance in order for the serum sodium level to increase, assuming no significant extra-renal fluid losses. Therefore, if urinary electrolyte-free water clearance is very low, then free fluid restrictio...
How do you counsel patients on the likelihood of resolution of their hypertension post adrenalectomy for primary hyperaldosteronism?
Primary hyperaldosteronism is a curable cause of hypertension. Removal of an Aldosterone producing adenoma results in correction of biochemical abnormalities in almost all patients. Hypertension also improves but not in all patients. Studies have shown that "cure" of hypertension occurs in about 27-...
Would you recommend starting an SGLT2 inhibitor in a proteinuric CKD patient with chronic asymptomatic bacteriuria?
In spite of the biological plausibility that SGLT2 inhibitors are associated with increased risk for UTI, population-based cohort studies, like the one of Dave et al in diabetic patients, did not show a higher risk of severe or minor UTI with SGLT2 inhibitor users and other antidiabetic drugs. The d...
Do you recommend preloading with IV magnesium to decrease the risk of cisplatin nephrotoxicity?
Although there have been studies demonstrating that hypomagnesemia has been associated with an increased risk of AKI, there have been no clinical trials indicating preloading with mag prevents AKI. I would recommend to have the magnesium above 2mg/dl prior to cisplatin.
How do you approach the management of patients with suspected membranous lupus nephritis who are found to have positive PLA2R antibodies?
In a patient with known SLE with proteinuria > 500 mg/g and (+) PLA2R antibodies in the serum, a kidney biopsy would be warranted. PLA2R staining should be performed on the kidney biopsy. PLA2R staining must co-localize on the subepithelial aspect in a granular fashion similar to IgG in PLA2R posit...
How would you approach the treatment for patients with renal-limited ANCA vasculitis who have persistent proteinuria, hematuria, and ANCA titers and have completed a steroid taper and received three doses of rituximab?
Renal limited ANCA is usually MPO associated. Isolated PR-3 involvement of the kidneys are rare. Further information is needed in making a decision for this case. We need to know when the patient was diagnosed with ANCA vasculitis. What was the Serum creatinine at presentation? When was the kidney b...
Do you recommend initiating immunosuppression and plasmapheresis in patients with dialysis dependent AKI in the setting of anti-GBM disease who do not have pulmonary involvement?
Anti-GBM disease is a rare disorder (incidence perhaps 1:1,000,000 adults/year) that is characterized as a small vessel vasculitis mediated by anti-GBM antibodies directed against the alpha-3-chain of collagen IV in basement membranes. Perhaps half of patients have disease that involves both the kid...
Are there instances when you use letermovir without the addition of acyclovir when managing a kidney transplant recipient for CMV prophylaxis?
I am assuming this question is about initial viral prophylaxis after transplant and exposure to induction immunosuppression. We have not used often letermovir as first line CMV prophylaxis outside of a research study, or during valcyte shortages. Cases where one might consider Letermovir as prophyla...