Associations between nighttime and daytime maximum voided volumes: Relevance for nocturia?
| Autor: | Jason Lazar, Jeffrey P. Weiss, Lori A. Birder, Roger R. Dmochowski, Thomas F. Monaghan, Karel Everaert, Donald L. Bliwise |
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| Rok vydání: | 2020 |
| Předmět: |
Male
medicine.medical_specialty Urology Urinary Bladder 030232 urology & nephrology Urination Nocturnal 03 medical and health sciences 0302 clinical medicine medicine Nocturia Humans In patient Aged Retrospective Studies 030219 obstetrics & reproductive medicine business.industry Polyuria Functional bladder capacity Small bladder Middle Aged Etiology Urology clinic Female Neurology (clinical) medicine.symptom Prostatic obstruction business |
| Zdroj: | Neurourology and urodynamicsREFERENCES. 39(8) |
| ISSN: | 1520-6777 |
| Popis: | Aim The relationship between maximum voided volumes (MVV) during the night and day is poorly understood. Such measurements are important because they are often used to indicate functional bladder capacity (FBC), a relevant parameter for nocturia. This study examined the association of such nighttime and daytime measurements in men with nocturia. Methods We retrospectively analyzed 356 24-hour voiding diaries showing ≥2 nocturnal voids from 220 men at an outpatient urology clinic. We defined small FBC as MVV ≤ 200 mL. Results A total of 131 entries demonstrated a nocturnal MVV ≤ 200 mL, of which a majority (98 [74.8%]) also showed a 24-hour MVV ≤ 200 mL (ie, global small FBC), and 33 (25.2%) exceeded the 200 mL threshold during the day (ie, nocturnal-specific small FBC). Correspondingly, among voiding diaries without global small FBC (n = 258), most (225/258 [87.2%]) showed a nocturnal MVV > 200 mL. Data were similar when analyzing only the first complete voiding diary per case, when limiting analyses to those without benign prostatic obstruction, and when limiting analyses to cases with nocturnal polyuria. Conclusion Nocturia may be attributable to nocturnal-specific small FBC or global small FBC. Although the etiology of nocturnal-specific small FBC remains unclear, it was present in a significant minority of patients with small FBC, thus necessitating more directed research. Conversely, diminished nocturnal MVV was nevertheless relatively uncommon in the absence of global small FBC, such that nocturnal-only voiding diaries may provide a rational alternative for follow-up evaluation in patients with nocturia due to global small bladder capacity. |
| Databáze: | OpenAIRE |
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