I'm 45, female, with CKD and T2D. How to control the damage?

Question

Hi doctor,

I am a 45-year-old woman with chronic kidney disease, and my latest labs show an eGFR of 32 mL/min/1.73 m², creatinine 1.9 mg/dL, urine albumin–creatinine ratio 420 mg/g, potassium 5.1 mEq/L, bicarbonate 20 mEq/L, hemoglobin 9.6 g/dL, ferritin 85 ng/mL, and TSAT 17%.

I was told this is CKD stage 3b with significant albuminuria. I also have type 2 diabetes with an HbA1c of 7.9%, and my blood pressure averages around 150/95 mmHg at home despite medication. I am on Ramipril 10 mg daily, Dapagliflozin 10 mg daily, Metformin 500 mg twice a day, and a low-dose loop diuretic, but I am unsure if metformin is still safe at my kidney function.

I have been feeling very fatigued and short of breath on exertion, which I am worried might be due to anemia from CKD. My potassium has been creeping up, so I am anxious about continuing the ACE inhibitor and whether I need a potassium binder.

I am also worried about bone health because my PTH is 180 pg/mL and phosphorus is 4.9 mg/dL. Does this mean I already have CKD–mineral and bone disorder, and should I start vitamin D or phosphate binders?

Diet-wise, I am confused about how much protein, potassium, and phosphorus I should actually be eating, and whether I need a renal dietitian. Should I be on IV iron or an erythropoiesis-stimulating agent given my hemoglobin and iron indices? How often should I repeat labs like eGFR, UACR, potassium, and bicarbonate, and when should I see a nephrologist versus my endocrinologist? Are there any vaccines I should prioritize (like hepatitis B or pneumococcal) because of CKD? Do SGLT2 inhibitors and Finerenone together make sense for me, and how do we monitor for hyperkalemia if I start Finerenone? Could metabolic acidosis at a bicarbonate of 20 mEq/L be contributing to my fatigue, and should I be on oral bicarbonate?

Finally, what else can I do, medication-wise or lifestyle-wise, to slow CKD progression while still getting my diabetes under better control?

Please advise.

Answer 1

Hi,

Welcome to icliniq.com

First, with an estimated glomerular filtration rate (eGFR) of 32 and albuminuria of 420 mg/g, you are in a high-risk category for chronic kidney disease (CKD) progression, and your blood pressure goal should ideally be under 130/80 mmHg.

Ramipril and Dapagliflozin are excellent choices for kidney protection, but potassium does need close monitoring, especially if adding Finerenone, which can further increase potassium; in your case, regular labs (potassium, bicarbonate, eGFR, and UACR) every one to three months is reasonable. If potassium continues rising, a potassium binder like Patiromer could be considered.

Your bicarbonate level of 20 suggests mild metabolic acidosis, which may contribute to fatigue and should be corrected with oral sodium bicarbonate if persistent. Regarding metformin, with an eGFR of 32, it can be continued cautiously, especially at a low dose, but some doctors prefer to stop it below 30 due to lactic acidosis risk.

The anemia likely stems from CKD, given the hemoglobin of 9.6 and transferrin saturation (TSAT) of 17%; you may benefit from intravenous iron therapy to optimize TSAT above 20% before starting an erythropoiesis-stimulating agent (ESA), which would be considered if symptoms persist or Hb remains below 10 g/dL despite iron repletion.

Your elevated PTH and phosphorus indicate early CKD–mineral and bone disorder (CKD-MBD); a low-phosphorus diet, non-calcium-based phosphate binders (if needed), and vitamin D analogs can help, but a nephrologist should guide this. Protein intake should be moderate (~0.8 g/kg/day), while potassium and phosphorus intake should be individualized—seeing a renal dietitian would be very helpful here.

Vaccinations against hepatitis B and pneumococcal infections (both PCV15/20 and PPSV23) are strongly recommended. Lastly, lifestyle-wise, strict glycemic control (targeting glycated hemoglobin HbA1c ~7%), dietary sodium restriction, regular physical activity, and weight management (if applicable) can all help preserve kidney function.

I hope this answers your query.

Thank you.