MP79-15 RISK FACTORS FOR NOCTURNAL POLYURIA

Abstract

You have accessJournal of UrologyUrodynamics/Lower Urinary Tract Dysfunction/Female Pelvic Medicine: Non-neurogenic Voiding Dysfunction II1 Apr 2018MP79-15 RISK FACTORS FOR NOCTURNAL POLYURIA Harjot Singh, Jeffrey Weiss, Jerry Blaivas, Linda Dayan, and Noam Fine Harjot SinghHarjot Singh More articles by this author , Jeffrey WeissJeffrey Weiss More articles by this author , Jerry BlaivasJerry Blaivas More articles by this author , Linda DayanLinda Dayan More articles by this author , and Noam FineNoam Fine More articles by this author View All Author Informationhttps://doi.org/10.1016/j.juro.2018.02.2683AboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookTwitterLinked InEmail INTRODUCTION AND OBJECTIVES The aim of this study is to determine the prevalence of potential risk factors for nocturnal polyuria in patients with lower urinary tract symptoms (LUTS). METHODS This is a retrospective study of patients who completed the lower urinary tract symptom score (LUTSS) and at least one 24 hour bladder diary (24 HBD) during an evaluation of LUTS. The patients were divided into two groups based on the Nocturnal Polyuria Index (NPi): nocturnal polyuria (NP+) defined as an NPi >0.33 and normal nocturnal urine production (NP-) defined as an NPi <0.33. History, surgeries and medications were recorded. Binary logistic regression was performed to find the relations between potential risk factors and diary parameters with nocturnal polyuria. Values for general population prevalence were taken from the literature. RESULTS There were 524 patients, 338 males and 186 females (age range=12-99), 90% completed a LUTSS questionnaire. The mean age of NP+ and NP- groups were 71.5 (standard deviation=13.9) and 60 (SD=17.4), respectively (p<0.0001). Of the 145 NP+ patients, 96 (66%) were males and 49 (34%) were females (p<0.005). Of 379 NP- patients, 242 (64%) were males and 137 (36%) were females (p<0.005). The mean total number of voids for NP+ and NP- groups were 11.9 and 10.6, respectively (p<0.003), and the mean number of nocturnal voids of NP+ and NP- groups were 3.5 (SD=2.1) and 1.3 (SD=1.3), respectively (p<0.0001). The mean LUTSS value in the NP+ and NP- groups were 22.0 (SD=11.5) and 19.9 (SD=11.2), respectively (p=0.007). From all the potential risk factors queried, only age, number of voids per 24 hours, and nocturia episodes were strongly correlated with nocturnal polyuria. Table 1 shows a partial list of potential risk factors. Benign prostatic hyperplasia (BPH), pedal edema, sleep apnea, urethral obstruction, and hypertension were underrepresented, and overactive bladder (OAB) was overrepresented in the sample population. CONCLUSIONS We were surprised to see a lack of correlation between nocturnal polyuria and its known causes, such as sleep apnea and pedal edema. The data suggests that risk factors for nocturnal polyuria may be underreported in standard history taking. The 24 HBD remains the gold standard for diagnosing nocturnal polyuria. © 2018FiguresReferencesRelatedDetails Volume 199Issue 4SApril 2018Page: e1086-e1087 Advertisement Copyright & Permissions© 2018MetricsAuthor Information Harjot Singh More articles by this author Jeffrey Weiss More articles by this author Jerry Blaivas More articles by this author Linda Dayan More articles by this author Noam Fine More articles by this author Expand All Advertisement Advertisement PDF downloadLoading ...