Nephrology
Clinical discussions on kidney disease management, dialysis, transplantation, and electrolyte disorders.
Recent Discussions
Which anti-hypertensives do you hold and for how long when screening for hyperaldosteronism in a patient with resistant hypertension and initial screening with unsuppressed renin but elevated aldosterone >20 while on anti-hypertensive therapy?
Only spironolactone for 2-3 weeks. Suppressed renin is the most sensitive test to diagnose primary hyperaldosteronism.
Do you continue pre- and post-hydration for patients on amphotericin B who have non-oliguric AKI requiring dialysis?
I would continue saline loading to prevent further kidney injury only if the patient is not hypervolemic and the patient has adequate urinary output to tolerate the saline loading. Otherwise, I would discontinue the saline loading since these patients are at increased risk of developing fluid overlo...
What is your approach to performing outpatient hemodialysis in patients with LVADs, particularly regarding blood pressure assessment and ultrafiltration management when Doppler measurements are required due to low pulsatility?
Doppler-based MAP monitoring via Doppler ultrasound with a sphygmomanometer is the primary method for blood pressure monitoring during hemodialysis in these patients with LVAD. Crit-Line monitoring during hemodialysis may potentially be useful in guiding the rate of ultrafiltration in these patients...
Would you recommend transition to hemodialysis for a patient with calciphylaxis, hyperphosphatemia, and ESKD on peritoneal dialysis?
Changing from PD to HD is a tough decision but I would do it for calcemic uremic arteriopathy CUA (calciphylaxis) for two reasons, increase clearance and guarantee IV delivery of sodium thiosulfate (STS). Peritoneal STS has been describedMataic & Bastani, PMID 16771254But I think CUA is life-threate...
What is your approach to management of patients with recurrent nephrolithiasis and osteoporosis who are receiving teriparatide?
Bones and calcium containing kidney stones can interact. I find it interesting that patients who have primary hyperparathyroidism are prone to predominantly calcium phosphate kidney stones, since the action of parathyroid hormone on renal tubes is to reabsorb urine calcium. That’s why people with hy...
When giving albumin challenge, for acute kidney injury with suspected hepatorenal syndrome, do you administer a single dose daily or split the dose of albumin?
The main concern about albumin infusions is the potential risk for pulmonary edema (China et al., PMID 33657293). Therefore, I prefer to have albumin administered in divided doses of 25 grams at a time with a max daily dose of up to 100 grams, and I tend to stop IV albumin if the serum albumin level...
What is your approach to preventing exercise-associated hyponatremia?
Exercise-associated hyponatremia is typically due to fluid intake in excess of fluid loss. Therefore, athletes should avoid overconsumption of fluids. Rather, athletes should drink according to thirst. In addition, it is important to recognize that electrolyte-containing sport drinks does not provid...
Do you take any special considerations when working up a pregnant patient for secondary causes of hypertension?
Pregnancy does affect the approach to secondary causes of hypertension evaluation. Because of the relatively high prevalence of pre-eclampsia (3-5% of pregnancies), hypertension occurring after the 20th week of gestation with new proteinuria often does not require additional workup. Patients could b...
What is your approach to the diagnosis of acute kidney injury suspected secondary to renal infarction from thromboembolic disease?
Renal infarction should be suspected in a patient with acute flank/abdominal pain, hematuria, and elevated LDH with normal AST and ALT, especially in the setting of atrial fibrillation, left ventricular thrombus, dilated cardiomyopathy, prosthetic heart valve, renal artery injury/dissection or hyper...
How long would you wait before performing a kidney biopsy in a patient with possible AIN whose creatinine has plateaued, but not improved, after discontinuing the suspected offending agent?
If the kidney function has not resolved one week after withdrawal of the suspected offending agent, I would request a biopsy.