[The correlation between urodynamics and morphology in men with benign prostatic hyperplasia].
OBJECTIVE
We have the impression that the degree of obstruction was stronger in the patients with a middle lobe of hyperplastic nodule than in those without such a lobe in patients with benign prostatic hyperplasia. In the present study, we compared the data from a pressure-flow study (PFS) and a presence of a middle lobe.


METHODS
A transurethral resection for benign prostatic hyperplasia was performed in 2,439 patients, 798 underwent PFS. The PFS findings and the presence of a middle lobe were compared with the following parameters, namely, the bladder detrusor function, the degree of obstruction, the post-voided residual volume, the maximum flow rate, the prostate volume and the resected volume.


RESULTS
In the pressure-flow study, the rate of the normal bladder detrusor function was higher in the patients with a middle lobe than in those without such a lobe (71.9 versus 53.3%). The degree of obstruction was also stronger in the patients with a middle lobe than in those without in the patients with a normal bladder detrusor function (89.0 versus 79.4%). Then in the patients with a middle lobe, the quantity of the post-voided residual volume was greater, however, the maximum flow rate was lower.


CONCLUSIONS
Most patients with a middle lobe demonstrate an improved voiding ability after underwent a transurethral resection.
Wakeda
Hironobu
H
Department of Urology, Miyazaki Medical College.
Takei
Mineo
M
Yamaguchi
Akito
A
D000368:Aged; D006801:Humans; D008297:Male; D011467:Prostate / Q000473:pathology; D011470:Prostatic Hyperplasia / Q000473:pathology* / Q000503:physiopathology* / Q000601:surgery; D020728:Transurethral Resection of Prostate; D014554:Urination; D014563:Urodynamics / Q000502:physiology*