Nephrology
Clinical discussions on kidney disease management, dialysis, transplantation, and electrolyte disorders.
Recent Discussions
Would you proceed with renal transplant in a patient with lupus nephritis who has progressed to ESRD and is clinically stable, but has persistently elevated dsDNA and low complements despite appropriate doses of hydroxychloroquine and mycophenolate?
Short answer: Yes—if the patient’s clinical lupus is quiescent for at least 6 months, it is reasonable to proceed with kidney transplantation even in the presence of persistent serologic activity (e.g., low complement, elevated anti-dsDNA).Why this matters: Transplant > Dialysis: Patients with LN-ES...
What is your systolic blood pressure target for patients over 80 with frailty and multiple comorbidities?
The target of 150/90 mmHg for adults over 80 primarily comes from the HYVET study, which demonstrated benefit in reducing stroke and mortality in this age group. However, as with all decisions in geriatric care, treatment should be individualized and guided by the patient’s functional status and goa...
In patients with an acute gout flare who have stage 3–4 CKD or are on anticoagulation, what is your preferred first-line treatment?
This is a challenge. Intra-articular steroids may be the best option. Colchicine is an extremely complicated issue. A single dose of colchicine at 0.3 or 0.15 mg might be considered. Systemic steroids probably should be avoided because they reduce resistance to infection in an already compromised in...
Has the recent large observational data suggesting that continuing metformin during hospitalization is associated with lower post-discharge mortality and hypoglycemia changed your approach to holding it on admission in stable, non-critically ill patients with T2DM?
I really like this paper, but I don't think it is plausible that a 5-day difference in receipt of metformin (the median length of stay was 5 days) could really affect 90-day mortality.The study question is a good one because the evidence that metformin causes lactic acidosis is extremely limited. In...
What is the role for checking uric acid levels in evaluation of SIADH in hospitalized older adults?
Uric acid is typically not a first-line test for evaluation of hyponatremia. It's usually used when trying to differentiate between hypovolemic states (not SIADH by definition) and euvolemic states (including SIADH). The utility stems from how uric acid is handled in the nephron, i.e., it's reabsorb...
What is your approach to patients with ESKD who request intravenous diphenhydramine during hemodialysis sessions for various perceived dialysis related complaints?
I would try to avoid giving anyone intravenous diphenhydramine. The only issue comes up with patients who have already been on dialysis for a while and have already been receiving diphenhydramine. I have given it in these cases.
How long would you wait before repeating a kidney biopsy procedure in a patient with inadequate tissue obtained on a prior attempt which was also complicated by a small perinephric hematoma?
I don't think we have any evidence to guide this decision. Somewhat depends on the urgency of the need to get tissue and how easy the first biopsy attempt was. If it is thought that the path to the next biopsy would need to go through the hematoma and no urgency could wait until resolved but usually...
Would you recommend starting tolvaptan at 7.5 mg per day, which is half the typical starting dose, to reduce the risk of overcorrection in an inpatient with SIADH and a serum sodium level of 122 mEq/L?
If it is for SIADH, I always start with 7.5 mg. See this, my fellow and I put together years ago. Dosing in SIADH: A Tale of Two Tolvaptans If it is for CHF, I would start with 15 mg as those patients are so pre-renal, their distal delivery is so impaired, and tolvaptan is limited by that. I haven't...
How do you recommend mitigating the risks of using beta blocker and clonidine therapy in combination for management of hypertension?
Beta blockers vary in lipophilicity, which affects blood-brain barrier permeability. Propranolol and metoprolol readily cross the blood-brain barrier, while other beta-blockers like nebivolol do not. The CNS side effects of fatigue, depression, and insomnia are more likely to worsen if using a lipop...
Do you accept a decline in eGFR during aggressive diuresis for heart failure if the patient is successfully decongesting, given data suggesting modest eGFR decline with improved congestion may still be associated with lower mortality?
Yes, I accept a modest decline in eGFR during diuresis in patients with heart failure. Previous studies of patients hospitalized with acute decompensated heart failure have shown that mortality and readmission rates are reduced by effective decongestion even if the creatinine rises. The study by Oka...