Age related change of nocturia in women.
OBJECTIVE
The precise etiology and classification of nocturia in women is not enough. We evaluated age related changes and classified the type of nocturia by age in women.


METHODS
We included 118 women 20 years or older with nocturia at least one time during night time. Subjects were divided into three groups by the age: group 1, under 40 years; group 2, 40 through 59 years; group 3, 60 years and above. The causes of nocturia and its pattern changed by age in women were evaluated using 3 days frequency volume chart. Nocturia was devided into three types: nocturnal polyuria, decreased nocturnal bladder capacity and mixed type.


RESULTS
The mean age was 57.2±11.8 and the mean nocturnal frequency was 2.7±1.8. In all age group, noctural polyuria was the major cause for noturia (40.8%), followed by low nocturnal bladder capacity (23.7%). As a major cause of nocturia, there was a significant increase of the incidence of nocturnal polyuria in aged people: group 1, 32.4%; group 2, 41.0%; group 3: 47.6% (P<0.04).


CONCLUSIONS
Nocturnal polyuria and decreased nocturnal bladder capacity are the major causes of nocturia in women. Nocturnal polyuria was the major cause of nocturia with age over 60 years old. In aged women, nocturnal polyuria should be considered as a main cuase of nocturia and treated based on these result.
Department of Urology, Chonnam National University Medical School, Gwangju, Korea.
Sun-Ouck
SO
Kim
Jun Seok
JS
Kim
Hee Sun
HS
Kim
Eu Chang
EC
Hwang
Kyung Jin
KJ
Oh
Dongdeuk
D
Kwon
Kwangsung
K
Park
Soo Bang
SB
Ryu
Am J Obstet Gynecol. 2001 Aug;185(2):514-21
11518919
J Urol. 2000 Jan;163(1):5-12
10604303
BJU Int. 1999 Jun;83(9):1017-22
10368248
Gerontologist. 1987 Apr;27(2):185-93
3583010
Br J Gen Pract. 1999 Nov;49(448):897-900
10818656
Scand J Prim Health Care. 1992 Jun;10(2):98-104
1641529
BJU Int. 2004 Jul;94(1):194-5
15217468
BJU Int. 2004 May;93(7):1001-4
15142151
Int J Clin Pract. 2005 Aug;59(8):938-45
16033616
Drugs Aging. 1999 Dec;15(6):429-37
10641954
Urology. 2000 Jul;56(1):71-5
10869627
Eur Urol. 2001;40 Suppl 1:13-8
11598348
Maturitas. 1996 May;24(1-2):73-81
8794437
J Am Geriatr Soc. 1995 Sep;43(9):985-92
7544816
Neurourol Urodyn. 2002;21(2):179-83
11857672
Invest Urol. 1978 Nov;16(3):204-6
711413
J Urol. 2006 Feb;175(2):596-600
16407003
J Urol. 2000 Oct;164(4):1201-5
10992366
Gerontologist. 1988 Feb;28(1):99-104
3342998
BJU Int. 2003 Dec;92(9):948-54
14632853
J Urol. 1996 Oct;156(4):1292-9
8808857
Int J Urol. 2004 May;11(5):282-7
15147543
Neurourol Urodyn. 1999;18(6):559-65
10529704