From the Guidelines
For an 89-year-old male experiencing nighttime urination, the most effective approach is to first implement lifestyle changes, such as reducing fluid intake, especially in the evening, and then consider medication like desmopressin if nocturnal polyuria is diagnosed. To address nighttime urination in this patient, it's crucial to start by evaluating the cause of the nocturia. According to 1, if the patient has predominant significant nocturia, getting out of bed to void 2 or more times per night, a frequency-volume chart (FVC) for 3 days should be completed to check for 24-hour polyuria or nocturnal polyuria. Some key points to consider in managing nocturia include:
- Reducing fluid intake, especially in the evening, as suggested by 1 and 1
- Avoiding caffeine and alcohol consumption
- Elevating legs in the evening to mobilize fluid
- Considering desmopressin if nocturnal polyuria is diagnosed, as mentioned in 1 It's also important to note that medical evaluation is essential before starting any treatment, as nocturia could be caused by various conditions including benign prostatic hyperplasia, diabetes, heart failure, or sleep apnea, as discussed in 1. Given the patient's advanced age, any medication should be started at the lowest possible dose with careful monitoring for side effects. The patient should be followed to assess treatment success or failure and possible adverse events, with follow-up repeated approximately once a year, as outlined in 1.
From the Research
Treatment Options for Nocturia
- Desmopressin is a synthetic antidiuretic hormone analogue that has been shown to be effective in reducing the mean number of nocturnal voids and normalizing the rate of nocturnal urine production in adults with nocturia associated with nocturnal polyuria 2.
- The medication has been approved for the treatment of nocturia and has been found to increase the initial sleep period or mean maximum period of uninterrupted sleep by approximately 2 hours 2.
- A newer formulation of desmopressin, a sublingual tablet, has been licensed for the symptomatic treatment of nocturia due to idiopathic nocturnal polyuria in adults of any age, with regular serum monitoring for those over 65 3.
Dosage and Efficacy
- The optimal dosage of desmopressin for men is typically a minimum of 50 μg, while women usually benefit from a minimum of 25 μg 4.
- Desmopressin has been found to be effective in reducing the number of nocturnal voids, voided volume, and improving sleep period in adults with nocturia 2, 4.
- The medication has been found to be generally well-tolerated, with most desmopressin-related adverse events being transient and mild or moderate in severity 2.
Safety Profile
- Hyponatremia remains a major concern with desmopressin treatment, especially in patients over 65 years of age 2, 4.
- Clinically significant hyponatraemia was reported in approximately 5% of patients and required withdrawal from studies in less than or equal to 3% of patients 2.
- Regular serum monitoring is recommended for patients over 65 years of age taking desmopressin 3.