Will pregnancy affect my kidney disease or my baby?

Question

Hello doctor,

I am 43, and I was recently diagnosed with autosomal dominant polycystic kidney disease (ADPKD) after an ultrasound showed multiple cysts on both kidneys.

My creatinine is 1.8, and my GFR (glomerular filtration rate) is 42, which puts me in stage 3 chronic kidney disease. This finally explains the back pain and the blood in my urine that I have had for the past year.

My blood pressure has also been high, around 155/98, even though I am taking Lisinopril and Amlodipine.

What is scaring me the most is that I am 20 weeks pregnant with my third child. My nephrologist said this makes my pregnancy high-risk, especially for preeclampsia, even though my first two pregnancies were completely normal. They want to monitor me weekly, and I am anxious that my kidney function might worsen as the pregnancy progresses.

I also recently found out that my mother likely had the same condition, but was never diagnosed; she passed away at 52 from a brain aneurysm. Because of that, I am wondering if I should get an MRA (magnetic resonance angiography) to check for aneurysms myself. I am honestly terrified of something happening to me and leaving my kids without a mother.

I have so many questions:

Can pregnancy make ADPKD progress faster?
Will I need dialysis sooner because of this?
Should I get screened for aneurysms given my family history?
And what about my children? Could all three of them have inherited this disease from me?

I am overwhelmed and just need some clarity and guidance.

Please help.

Thank you.

Answer 1

Hello,

Welcome to icliniq.com.

I have read your query and can understand your concern.

I am really sorry you are dealing with all of this at once. Anyone in your situation would feel scared, especially with a new diagnosis, a high-risk pregnancy, and worries about the future. Let me walk you through everything clearly and honestly so you know what to expect and what steps actually help.

Yes, pregnancy can put extra strain on your kidneys, and in women with ADPKD, it can sometimes make the disease progress a little faster. That is why your doctors want to monitor you closely.

But with a GFR of 42, you are not near needing dialysis right now. Many women with Stage 3 CKD complete pregnancy safely with the right care. The main focus will be:

Protecting your kidney function.
Controlling your blood pressure.
Watching for early signs of preeclampsia.

Weekly follow-ups are not a sign of danger. They are a sign that your doctors want to prevent complications before they start.

Your BP (blood pressure) of 155/98 is high, even on medication, and that is likely what your team is most worried about. In ADPKD and pregnancy, managing blood pressure tightly is critical. Your doctors may adjust your medications to safer pregnancy-approved options and aim for a lower target BP to protect both you and the baby.

Aneurysm screening is important in your case. Because your mother died from a brain aneurysm, and because aneurysms are more common in ADPKD, getting an MRA of the brain is absolutely reasonable. It is a safe test in pregnancy and can give huge peace of mind.

Will pregnancy make my kidneys get worse faster? It can occur in a minority of women, especially if:

Blood pressure stays high.
There is protein in the urine.
There is preeclampsia.
There is rapid cyst growth.

But many women with Stage 3 CKD and ADPKD deliver safely and do not jump to Stage 4 or 5 right away. Close monitoring genuinely helps prevent that.

For your doubt, whether you need dialysis soon? With a GFR of 42, dialysis is not on the horizon right now. Dialysis is usually needed when GFR drops below 10 to 15.

Your kidney function does not usually crash suddenly.

ADPKD has a 50 percent chance of passing to each child. This means some may have it and some may not. Your children can undergo genetic counseling later if needed. There’s no urgent testing required right now during pregnancy.

Back pain and blood in the urine. These are classic symptoms of ADPKD. Blood in urine (hematuria) often comes from cysts rupturing. Back/flank pain is also widespread with enlarged kidneys.

We just want to be sure there is no infection, stones, or severe cyst bleeding. Your doctors may check urine tests and blood counts.

Investigations you should prioritize:

MRA brain - to screen for aneurysms.
Regular labs - Creatinine, eGFR, and electrolytes.
Urine protein/creatinine ratio - very important in pregnancy.
Frequent fetal ultrasounds and blood pressure monitoring.

Treatment plan: Tight blood pressure control.

Your doctors may:

Adjust doses of your current medications.
Switch to pregnancy-safe options (ACE inhibitors are usually stopped during pregnancy).

Monitoring: Weekly or bi-weekly visits during the second half of pregnancy.

For your preeclampsia prevention, our doctor may suggest:

Low-dose Aspirin (if not already on it).
Regular urine protein checks.

Kidney protection:

Stay well-hydrated.
Avoid NSAIDs (non-steroidal anti-inflammatory drugs).
Control any infections promptly.

Fetal monitoring: Frequent growth scans to ensure the baby is doing well.

Your fear about leaving your children behind is real and valid.

This is exactly how women with ADPKD safely get through pregnancy.

I can also help you understand your ultrasound report, blood tests, or the medications you are on.

I hope this answers your query.

Please let me know if I can assist you further.

Thank you.