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How to lower BUN levels in an elderly person?

This Premium Q&A, reviewed and published, features a real conversation between an iCliniq user and a physician.

Patient's Query

Hello doctor,

This question is about my 91-year-old mother. Significant medical history includes permanent atrial fibrillation with AV node ablation and permanent pacemaker, hypertension, osteoarthritis with right knee replacement, diastolic dysfunction, multiple UTIs, osteoporosis, anxiety, COVID-19, and moderate to advanced dementia. Current medications include Eliquis, Megace for appetite, Famotidine for acid reflux, and Acetaminophen for arthritis pain. She was also diagnosed with early kidney injury.

We are concerned about her elevated BUN levels. Her cognition and mental status have decreased in the past two months significantly, and she is extremely sleepy and lethargic. She had medication-induced hepatitis also.

Why are her BUN levels elevated?

Please help.

Answered by Dr. Karthic Kumar

Education:

MBBS

Professional Bio:

Dr. Karthic Kumar is a renowned Nephrologist with 12 years of clinical experience, based in Coimbatore. He has been involved in nearly 1,000 renal transplant procedures and is known for his patient-centric approach, focusing on treating root causes rather than symptoms. An alumnus of SRM University, Chennai, he completed an ADA-accredited Diabetology Fellowship and a Fellowship in Nephrology from Apollo Hospitals. He is widely respected for his expertise, ethics, and commitment to kidney care.

This doctor is not available for online consultations on the platform anymore.

Hello,

Welcome to icliniq.com.

I went through your query.

I went through her reports (the attachments were removed to protect the patient's identity).

BUN (blood urea nitrogen) is not a specific marker for the kidneys. BUN may be elevated due to:

1. Dehydration.

2. High protein intake.

3. Abdominal bleeding.

4. Steroid use.

5. Certain drugs.

6. Aging.

So, there is no need to worry. I suggest you have an abdominal ultrasound.

I hope it helps.

Thank you.

Medically reviewed by iCliniq medical review team
Published At June 14, 2024
Reviewed At February 13, 2026

Education:

MBBS

Professional Bio:

Dr. Karthic Kumar is a renowned Nephrologist with 12 years of clinical experience, based in Coimbatore. He has been involved in nearly 1,000 renal transplant procedures and is known for his patient-centric approach, focusing on treating root causes rather than symptoms. An alumnus of SRM University, Chennai, he completed an ADA-accredited Diabetology Fellowship and a Fellowship in Nephrology from Apollo Hospitals. He is widely respected for his expertise, ethics, and commitment to kidney care.

This doctor is not available for online consultations on the platform anymore.

Same symptoms don't mean you have the same problem. Consult a doctor now!

Education:

MBBS

Professional Bio:

Dr. Karthic Kumar is a renowned Nephrologist with 12 years of clinical experience, based in Coimbatore. He has been involved in nearly 1,000 renal transplant procedures and is known for his patient-centric approach, focusing on treating root causes rather than symptoms. An alumnus of SRM University, Chennai, he completed an ADA-accredited Diabetology Fellowship and a Fellowship in Nephrology from Apollo Hospitals. He is widely respected for his expertise, ethics, and commitment to kidney care.

This doctor is not available for online consultations on the platform anymore.

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