Management of Nocturia and Nocturnal Polyuria.

Nocturnal polyuria (NP), characterized by overproduction of urine at night (greater than 20%-33% of total 24-hour urine volume depending on age), is a major contributing factor in most nocturia cases. Nocturia can be caused by intake, urological, nephrological, hormonal, sleep, and cardiovascular factors. It is therefore important to accurately diagnose both the type of nocturia and the potentially associated medical conditions to determine appropriate treatment. Diagnostic tools, in addition to a thorough history and physical examination, include voiding/bladder diary analyses and questionnaires to diagnose nocturia type (NP, diminished nocturnal/global bladder capacity, global polyuria) and causative factors. Lifestyle modifications are the first intervention implemented for the management of nocturia and NP but, as symptoms progress, such measures may be insufficient, and pharmacotherapy may be initiated. While drugs for benign prostatic hyperplasia and overactive bladder have demonstrated statistically significant reductions in nocturnal voids, patients often fail to achieve a clinically meaningful response. Antidiuretic treatment is warranted for patients with nocturia due to NP because, in many patients, it treats the underlying cause (ie, insufficient secretion of antidiuretic hormone arginine vasopressin) that leads to overproduction of urine at night and has been shown to provide statistically significant reductions in nocturnal voids. Desmopressin, a synthetic analog of arginine vasopressin, is the only antidiuretic treatment indicated specifically for nocturia due to NP. Overall, the pathophysiology of NP is complex and differs from that of other types of nocturia. A multidisciplinary approach is necessary to effectively diagnose and manage this bothersome condition.

Classification of nocturia by analyzing frequency volume chart and relations with international prostate symptom score in male patients with lower urinary tract symptoms in Korea.

Purpose: To evaluate the categories of nocturia and relationships with the international prostate symptom score (IPSS) in Korean men with lower urinary tract symptoms (LUTS) accompanying nocturia. Materials and Methods: Five hundred twenty-one male patients from five different hospitals, aged ≥18 years, were included. The 3-day frequency volume chart was used to identify nocturia. We also used the IPSS and The International Consultation on Incontinence Modular Questionnaire-Nocturia (ICIQ-N) module to verify the correlation between nocturia and quality of life. Results: The distribution of nocturia events varied from 1 to 11, and 2 nocturia events were most prevalent (48.4%). Across the various numbers of nocturia events, the mean age, first sleep period, functional bladder capacity (FBC), nocturnal polyuria index (NPI), nocturia index (NI), predicted number of nightly voids, and nocturnal bladder capacity index (NBCI) were statistically different. Patients with pure nocturnal polyuria showed different night lengths, nocturnal urine volume, FBC, NPI, NI, and predicted number of nightly voids than those without nocturnal polyuria. Patients with severely reduced NBCI were prominent in the IPSS >20 group, and the degree of vexation increased with the number of nocturia events. The IPSS storage symptom score and ICIQ-N symptom score positively correlated with nocturia events. Conclusions: In Korean male LUTS patients with nocturia, mixed-type nocturia was prominent, and patients with a high IPSS had a much poorer sleep quality than those with a low IPSS.

Would a new definition and classification of nocturia and nocturnal polyuria improve our management of patients? ICI-RS 2014.

The following is a report of the proceedings of the Nocturia Think Tank sessions of the annual International Consultation on Incontinence-Research Society, which took place September 22-24, 2014 in Bristol, UK. The report is organized into sections pertaining to the main topic of discussion focussing on the question as to whether a new definition and classification of nocturia and nocturnal polyuria would improve the outcome of management in our patients. First, discussions identified theoretical and practical shortcomings of current definitions. Secondly, the utility of several nocturnal polyuria definitions was tested in a real life population in relation to the symptom nocturia, in order to display weaknesses of these definitions. Thirdly, we explored in a clinical population the utility of bladder diary based parameters by asking the question: when nocturia improves, which of these parameters improve most? Based on the above explorations the Think Tank summarized elements of the current definitions that need reconsideration and suggests proposals for further research to reach more practical and more clinically meaningful definitions.

Nocturia causes vary with each decade.

PURPOSE OF REVIEW: To review the published literature within the last 18 months that comment on the causes of nocturia, varying with age. The causes are categorized into organized subsets: nocturnal polyuria, storage or reduced bladder capacity, 24-h polyuria, and sleep-associated nocturia. RECENT FINDINGS: Prevalence of nocturia is high, but has been reported at varying rates in the epidemiologic studies. Similarly, reported incidence has a high rate of variability. Nocturia causes were associated with nocturnal polyuria, bladder storage issues, metabolic syndrome, abnormal bowel habits, obesity, Parkinson's disease, global polyuria, insomnia, sleep disturbances, heart failure, anxiety, and depression. Although age was commented on in many articles, it was never the primary examined variable. SUMMARY: There is a lack of standardization in definition and classification of the causes of nocturia. Confounding variables included a lack of use of a standard definition of nocturia, identifying nocturia at its true onset, and a fundamental underutilization of frequency volume charts to identify patients with nocturia. The confounding variables make it difficult to compare studies. Thus, the strength of conclusion on cause will be better defined when standards are set controlling definition, identification, and diagnosis.

[Management of nocturia: a nosological entity within lower urinary tract symptoms in men]. / Prise en charge de la nycturie: une entité nosologique au sein des troubles mictionnels de l'homme.

AIM: To review the definition, pathophysiology, impact and management of nocturia in men METHODS: We conducted a literature review using Medline and Embase with the following keywords: nocturia or nocturnal polyuria. RESULTS: Nocturia in men is a multifactorial condition that may results from prostate but also kidney, bladder, heart, or lung diseases. It affects up to 60 % of men over 70 years and is responsible for major morbidity (sleep disorders, depression, falls, fractures), especially in the elderly. Pathophysiologically, we distinguish nocturia related to excessive urine production from those resulting from a reduction in the maximum voided volume. Thus, the first and most important workup is a frequency-volume chart conducted on a 72-hour-period. The initial assessment should then be continued to clearly identify the factors contributing to polyuria (disturbance of the pattern of endogenous production of arginine vasopressin, obstructive sleep apnea...) or to a reduction in the maximum voided volume (benign prostatic hyperplasia, overactive bladder). Treatment is then targeted: treatment of benign prostatic hyperplasia, antimuscarinic in case of overactive bladder, analogue of arginin vasopressin (demopressine) if nocturnal polyuria is involved, or continuous positive airway pressure in case of a sleep apnea syndrome. CONCLUSION: Nocturia is a common and serious condition due to its morbidity. Its understanding and management have evolved significantly in recent years and are now based on a multimodal approach.

Lower urinary tract symptom: still too much focus on the prostate?

PURPOSE OF REVIEW: Male patients with lower urinary tract symptoms have historically been managed in a prostate centric fashion. Population studies highlighting the prevalence and significance of storage symptoms, including nocturia, have meant a shift in the way men with lower urinary tract symptoms are assessed and managed. We review the recent guidelines and publications that have addressed this change in approach. RECENT FINDINGS: A new ß-3 adrenoreceptor agonist has demonstrated significant improvement in storage symptoms and appears to be well tolerated. SUMMARY: We support a continued move towards a patient-focused and management using the current guidelines.

Nocturia Think Tank: focus on nocturnal polyuria: ICI-RS 2011.

The following is a report of the proceedings of the Nocturia Think Tank sessions of the annual International Consultation on Incontinence-Research Society, which took place June 13-15, 2011 in Bristol, UK. The report is organized into sections pertaining to the main topics of discussions having occurred at that meeting, centering on the relationship of nocturnal polyuria (NP) and nocturia but also synthesizing more current evidence advancing our knowledge of the diagnosis and management of nocturia. This article is not meant to be a comprehensive review on the subject of nocturia, a number of which are available in the recent literature. All authors were physically present during, or in a preliminary session just prior to, the meeting in Bristol.

Nocturia: new directions.

The Nocturia Think Tank (TT) met during the 2010 meeting of the International Consultation on Incontinence-Research Society to discuss present knowledge and future directions in care and research of this prominent component of the spectrum of lower urinary tract symptoms. Questions raised included whether nocturia should be re-defined as a function of its bother, effects on quality of life, and economic impact upon society. At issue is the need to delineate the determinants of successful nocturia management. The multifactorial nature of nocturia requires that progress in its treatment will be dependent upon the cooperative investigation on the part of urologists, urogynecologists, geriatricians, epidemiologists, medical economists and pharma. Areas for future avenues of research were outlined at the conclusion of the meeting.

New aspects of the classification of nocturia.

Nocturia, one of the most bothersome urologic symptoms, has been poorly classified and understood. Multiple factors may cause nocturia, such as behavioral or environmental factors and pathologic conditions, including cardiovascular disease, diabetes mellitus, lower urinary tract obstruction, anxiety or primary sleep disorders, and sleep apnea. Nocturia caused by any combination of these and other conditions may be attributed to nocturnal polyuria, diminished nocturnal or global bladder capacity, global 24-hour polyuria, or a combination of these factors. Distinction among these classes of nocturia is made by a simple arithmetic analysis of the 24-hour voiding diary. Nocturia has been poorly studied and only recently classified according to its etiology and pathogenesis. After reviewing the current state of knowledge, we present a scheme for rational diagnosis of patients suffering from loss of sleep due to nocturnal micturition. This article reviews the current state of knowledge and presents algorithms for the diagnosis and classification of nocturia.

The relationship between the action of arginine vasopressin and responsiveness to oral desmopressin in older men: a pilot study.

OBJECTIVES: To identify whether oral desmopressin (ddAVP) reduced nocturnal urine volume (NUV) in older men with nocturia without obvious bladder outlet obstruction and to determine whether deficiencies in arginine vasopressin (AVP) release and action demonstrated using water deprivation testing predicted responsiveness to ddAVP. DESIGN: Participants had a 2-day Clinical Research Center (CRC) evaluation followed by a double-blinded, placebo-controlled, crossover trial of individually titrated oral ddAVP. SETTING: Participants were from a single Department of Veterans Affairs Medical Center. MEASUREMENTS: Maximum urine osmolality and percentage increase in osmolality were measured after subjects received aqueous vasopressin as part of the overnight water deprivation study; these data were used to categorize participants as normal, having partial central AVP deficiency, or having impaired renal responsiveness to AVP. Response to ddAVP was assessed using data from frequency-volume records. RESULTS: Fourteen participants completed the CRC stay and ddAVP trial. Subjects given ddAVP reduced NUV significantly from baseline (P=.02) and had significantly lower NUV than when on placebo (P=.01). The mean net reduction in NUV from ddAVP compared to placebo was 14+/-18%. Using water deprivation testing to categorize participants, 10 were normal, two had partial central AVP deficiency, and two had impaired renal responsiveness. The mean net reduction in NUV for those with abnormal water deprivation tests was 11+/-25%, versus 15+/-16% for those with normal water deprivation testing (P=.70). CONCLUSION: In this small randomized, controlled trial in older men with nocturia, ddAVP reduced NUV. Counter to expectations, participants deemed normal according to water deprivation tests had approximately equivalent responsiveness to ddAVP. Although this study cannot offer definitive conclusions on the lack of prediction of water deprivation testing for ddAVP benefit, these data offer additional information that may help clarify the pathophysiology and optimal treatment of nocturia in older men.

Correlation of pelvic organ prolapse quantification system scores with obstetric parameters and lower urinary tract symptoms in primiparae postpartum.

This study investigated the correlation between results of the pelvic organ prolapse quantification (POPQ) system at 3 days and at 2 months postpartum with obstetric parameters and lower urinary tract symptoms (LUTS) in 125 primiparae with vaginal delivery. The clinical characteristics, prevalence of pregnancy-related LUTS, and POPQ scores were evaluated. Regarding the relationship of obstetric parameters with POPQ scoring, the gh was found positively correlated with the body mass index and vaginal laceration at 2 months postpartum. The POPQ evaluation did not find the LUTS to be significantly related to the prolapse score. The mean scores of points C and D were significantly increased, and gh, pb, and tvl were significantly decreased between the initial and 2-month follow-up scores. Our results revealed that a decrease in vaginal size is the principal change during the first 2 months postpartum and that with the exception of gh, neither the obstetric parameters nor the LUTS were associated with the POPQ scoring system.

[Epidemiology and pathophysiology of overactive bladder]. / Epidemiologie und Pathophysiologie der überaktiven Blase.

According to the new ICS classification overactive bladder (OAB) is defined as a complex of symptoms such as frequency, nocturia, and urgency with or without urge urinary incontinence. Urgency is the key symptom that leads to the diagnosis. The prevalence of overactive bladder in the general adult population is approximately 17%. This number increases with advancing age. Incontinence events are reported in approximately one-third of these patients. Symptoms of overactive bladder have a negative impact on quality of life in every second patient and on sexuality in every fourth patient. In addition to neurogenic and myogenic factors, nowadays urothelial dysfunction is being discussed in the etiology of OAB.