Nephrology
Clinical discussions on kidney disease management, dialysis, transplantation, and electrolyte disorders.
Recent Discussions
Is there a BUN threshold for which you recommend dialysis prior to a kidney biopsy to avoid risk for bleeding?
Probably not HD but I might give DDAVP.
Do you recommend parathyroid imaging testing for patients with recurrent nephrolithiasis who are incidentally found to have an elevated PTH but who do not have hypercalciuria, hypercalcemia, hypovitaminosis D, or chronic kidney disease?
Yes, but with caveats. The “yes” is because hyperparathyroidism is a surgically curable disease if done by an experienced parathyroid surgeon. The caveat is if previous stone analyses have not shown a substantial calcium phosphate component, the stone formation may be due to other causes and unaffec...
Do you recommend obtaining a DEXA scan for patients with recurrent nephrolithiasis and hypercalciuria of unknown etiology?
I think this is an important question. I agree with Dr. @Dr. First Last. In my practice, if the patient is female, especially peri- or postmenopausal, I generally recommend a DEXA scan. If bone density is borderline or low, I typically refer the patient to an endocrinologist in our Bone Clinic for c...
What are your recommendations for stone prevention for patients with recurrent calcium based nephrolithiasis who consume well water with a high calcium concentration?
Drink lots of it! Seriously, studies done long ago, looking at the geography of stone formers did not correlate with water hardness (mineral content), but rather with average temperature, the incidence of stone passage being higher in the southern parts of the United States. The amount of calcium co...
How do you determine which patients with ANCA associated vasculitis may be good candidates for reduced dose glucocorticoid tapering?
This is an important question. Currently there are several groups of patients that benefit from reduced dose glucocorticoids: The largest group are patients who are receiving avacopan for remission induction. The ADVOCATE trial demonstrated that avacopan can markedly reduce the dose of glucocorticoi...
Are there any special considerations to take into account when managing patients with recurrent nephrolithiasis who are found to have a horseshoe kidney?
Interesting question! Horseshoe kidneys are particularly susceptible to stones, primarily in the lower poles. Stones are typically composed of calcium oxalate. Renal embryology was a neglected topic during my medical education. The prometanephros are located near the fetal cervical spine. They subse...
What is your approach to immunosuppression in patients with preserved kidney function who are found to have nephrotic syndrome of unknown etiology and cannot safely undergo a kidney biopsy?
This is a difficult scenario. Would definitely try to get a biopsy at a Higher level of care perhaps by Interventional Nephrology. Would obtain a comprehensive laboratory workup including kidney function, serum albumin level, random and 24-hour urine collection for albuminuria and proteinuria, Hepat...
Do you recommend a metabolic evaluation in a kidney transplant patient with no prior history of nephrolithiasis who is found to have donor derived kidney stones?
Thanks for an interesting question. It would help if we knew the relevant donor medical history, such as dietary indiscretions or enteric hyperoxalutia, which would not be issues in the recipient. Since this information is typically not available, I would collect two 24-hour urinary supersaturation ...
Do you use delayed-release budesonide over prednisone or methylprednisolone for the treatment of IgA nephropathy, considering the available safety and efficacy data?
The two agents (TRF-budesonide and systemic glucocorticoids, the latter of which include prednisone and methylprednisolone) have never been compared head-to-head, and so direct comparisons are unavailable. I try to present both options to patients, and in particular, I will focus on the side effect ...
How do you adjust the loading and maintenance doses for Keppra when treating status epilepticus in patients with ESRD, patients on HD, or patients on CVVH?
Ideally, if you have a patient with status epilepticus and known ESRD, then Keppra may not be an ideal first option. You should be reaching for your other status anti-seizure meds that aren’t exclusively renally excreted and are readily available in most hospitals; Depakote (40 mg/kg loading dose) o...