TY - JOUR
T1 - Bladder outlet obstruction nomogram for women with lower urinary tract symptomatology
AU - Blaivas, Jerry G.
AU - Groutz, Asnat
PY - 2000
Y1 - 2000
N2 - The aim of our study was to construct a bladder outlet obstruction nomogram for women with lower urinary tract symptoms. A urodynamic database of 600 consecutive women was reviewed. Bladder outlet obstruction, utilizing strict diagnostic criteria, was diagnosed in 50 (8.3%) patients. A comparison of patient characteristics, uroflowmetry, and detrusor pressure-uroflow studies was carried out between the obstructed patients (mean age, 64.4 ± 17.6 years) and 50 age-matched unobstructed controls (mean age, 64.8 ± 10.7 years). Maximum flow rates were significantly higher in free uroflow studies (free Qmax) than in pressure-flow studies (Qmax), in both obstructed (9.3 ± 3.7 versus 5.7 ± 3.6 mL/s, respectively. P = 2.6 10-6) and unobstructed (25.6 ± 11.2 versus 11.8 ± 5.9 mL/s, respectively. P = 8.7 10--2) patients. Comparison of detrusor pressure at maximum flow (pdet. Qmax) and maximum detrusor pressure during voiding (pdet.max) values did not reveal significant differences, in both obstructed (39.3 ± 18.4 versus 49.7 ± 25.5 cm H2O, respectively) and unobstructed (16.5 ± 8.4 versus 20.6 ± 9.2 cm H2O, respectively) patients. Further statistical analysis was carded out to construct bladder outlet obstruction nomogram. The nomogram classifies any pair of values of free Qmax and pdet.max into one of the following four zones: No obstruction, mild obstruction, moderate obstruction, and severe obstruction. Of the 50 obstructed women, 34 (68%) were classified by the nomogram as mildly, 12 (24%) as moderately, and 4 (8%) as severely obstructed. A positive correlation was found between subjective severity of the symptoms (assessed by the AUA Symptom Index score) and the four nomogram zones. In conclusion, the nomogram makes it possible to differentiate between obstructed and unobstructed women and between various degrees of obstruction. We believe the nomogram may also serve as an instrument to assess treatment outcomes. (C) 2000 Wiley-Liss, Inc.
AB - The aim of our study was to construct a bladder outlet obstruction nomogram for women with lower urinary tract symptoms. A urodynamic database of 600 consecutive women was reviewed. Bladder outlet obstruction, utilizing strict diagnostic criteria, was diagnosed in 50 (8.3%) patients. A comparison of patient characteristics, uroflowmetry, and detrusor pressure-uroflow studies was carried out between the obstructed patients (mean age, 64.4 ± 17.6 years) and 50 age-matched unobstructed controls (mean age, 64.8 ± 10.7 years). Maximum flow rates were significantly higher in free uroflow studies (free Qmax) than in pressure-flow studies (Qmax), in both obstructed (9.3 ± 3.7 versus 5.7 ± 3.6 mL/s, respectively. P = 2.6 10-6) and unobstructed (25.6 ± 11.2 versus 11.8 ± 5.9 mL/s, respectively. P = 8.7 10--2) patients. Comparison of detrusor pressure at maximum flow (pdet. Qmax) and maximum detrusor pressure during voiding (pdet.max) values did not reveal significant differences, in both obstructed (39.3 ± 18.4 versus 49.7 ± 25.5 cm H2O, respectively) and unobstructed (16.5 ± 8.4 versus 20.6 ± 9.2 cm H2O, respectively) patients. Further statistical analysis was carded out to construct bladder outlet obstruction nomogram. The nomogram classifies any pair of values of free Qmax and pdet.max into one of the following four zones: No obstruction, mild obstruction, moderate obstruction, and severe obstruction. Of the 50 obstructed women, 34 (68%) were classified by the nomogram as mildly, 12 (24%) as moderately, and 4 (8%) as severely obstructed. A positive correlation was found between subjective severity of the symptoms (assessed by the AUA Symptom Index score) and the four nomogram zones. In conclusion, the nomogram makes it possible to differentiate between obstructed and unobstructed women and between various degrees of obstruction. We believe the nomogram may also serve as an instrument to assess treatment outcomes. (C) 2000 Wiley-Liss, Inc.
KW - Bladder outlet obstruction
KW - Female
KW - Nomogram
KW - Urodynamics
UR - http://www.scopus.com/inward/record.url?scp=0033795368&partnerID=8YFLogxK
U2 - 10.1002/1520-6777(2000)19:5<553::AID-NAU2>3.0.CO;2-B
DO - 10.1002/1520-6777(2000)19:5<553::AID-NAU2>3.0.CO;2-B
M3 - Article
C2 - 11002298
AN - SCOPUS:0033795368
SN - 0733-2467
VL - 19
SP - 553
EP - 564
JO - Neurourology and Urodynamics
JF - Neurourology and Urodynamics
IS - 5
ER -