How can I manage both OAB and hypertension at 55?

Question

Hello doctor,

I am a 55-year-old female diagnosed with overactive bladder (OAB) one year ago. I experience urinary urgency and frequency about 10 to 12 times during the day and three to four times at night, with occasional urge incontinence.

My post-void residual urine volume on ultrasound was 25 mL. I have had hypertension for the past 7 years, with my latest blood pressure readings averaging 148/88 mmHg despite taking Losartan 50 mg daily. My fasting blood sugar is 112 mg/dL, and my BMI is 28.2 kg/m².

Urinalysis performed last month was normal, and urine culture showed no growth. I have been practicing bladder training exercises and reducing caffeine intake, but my symptoms persist. I drink around two liters of water daily and avoid alcohol. My creatinine is 0.9 mg/dL, and eGFR is 86 mL/min/1.73m². I also experience mild lower back pain due to degenerative disc disease.

I am concerned about poor sleep from nighttime urination, its impact on my blood pressure, and the possibility of needing long-term medications. I would like to know what advanced treatments are available for OAB that are safe for someone with hypertension, and whether any lifestyle changes could further improve my symptoms.

Please help.

Answer 1

Hello,

Welcome to icliniq.com.

I understand your concern.

Your overactive bladder symptoms, including frequent daytime and nighttime urination with occasional urge incontinence despite bladder training and lifestyle modifications, suggest that additional therapeutic measures are needed.

Since your urinalysis and culture are normal and your post-void residual is low, obstruction or infection is unlikely.

First-line pharmacologic options include antimuscarinic agents such as Solifenacin, Tolterodine, or Oxybutynin, and beta-3 adrenergic agonists such as Mirabegron.

In your case, Mirabegron should be used with caution because it can slightly raise blood pressure, so careful monitoring is required, especially given your current elevated readings despite losartan. Antimuscarinics are safer from a blood pressure standpoint, although they may cause side effects such as dry mouth and constipation. If oral medications are not sufficient or not tolerated, advanced therapies include intradetrusor botulinum toxin injections, percutaneous tibial nerve stimulation, or sacral neuromodulation, all of which can be effective and do not significantly affect blood pressure.

Lifestyle adjustments can further help reduce urgency and frequency. These include:

Maintaining a regular voiding schedule.
Avoiding bladder irritants such as artificial sweeteners, acidic foods, and very cold beverages, and
Moderating total daily fluid intake while avoiding large volumes in the evening to reduce nocturia.
Pelvic floor muscle training under the guidance of a physiotherapist can also improve bladder control.

Optimizing your blood pressure, with potential adjustment of antihypertensive therapy, and ensuring good sleep hygiene will not only benefit cardiovascular health but also help improve overall bladder symptom control.

I hope this has helped you.

Please feel free to reach out to me again if you have further queries.

Thank you.