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Criteria for differentiation of normal and abnormal uroflowmetrograms in adult men
Author(s) -
NISHIMOTO K.,
IIMORI H.,
IKEMOTO S.,
HAYAHARA N.
Publication year - 1994
Publication title -
british journal of urology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.773
H-Index - 148
eISSN - 1464-410X
pISSN - 0007-1331
DOI - 10.1111/j.1464-410x.1994.tb07632.x
Subject(s) - dysuria , urination , resection , medicine , nuclear medicine , prostate , urology , volume (thermodynamics) , surgery , anatomy , urinary system , physics , cancer , quantum mechanics
Objective To study parameters which serve as criteria for differentiation of normal and abnormal uroflowmetrograms. Subjects and methods A total of 105 subjects were investigated, 43 of whom had no symptoms of dysuria, 57 of whom had dysuria demonstrated as an abnormal uroflowmetrogram, subjective symptoms and a small residual urine volume, and five patients who were about to undergo transurethral resection of the prostate. The three parameters used to specify the shapes of the uroflowmetrogram curves were: (i) the ratio of the maximum flow rate (Q max ) and the voiding time (T 100 )‐ Q max /T 100 ; (ii) the ratio of the time to peak flow (TQ max ) and the voiding time, TQ max /T100; and (iii) the newly introduced voiding efficiency (e), measured by the ratio of the voided volume (VV) and T 100 × Q max , 8 = VV/(T 100 × Q max ), were taken for each patient. Results The criteria for normal uroflowmetrograms were: Q max /T 100 0.78, 0.32 TQ max /T 100 0.54, 0.63 ε < l, respectively. In the patients who underwent transurethral resection of the prostate the values of all three parameters improved and returned almost to normal after operation. Conclusion Using these three parameters the micturition pattern can be expressed quantitatively.