Yoshio Ashizawa

Role of male pelvic floor muscles and anterior fibromuscular stroma in males on α1-blocker treatment: A magnetic resonance imaging study

Dynamic motion of the pelvic floor muscles during voiding was analyzed using real‐time magnetic resonance imaging. To evaluate the contraction of the pelvic floor muscles, striated urethral sphincter distance, levator ani muscle thickness and anterior fibromuscular stroma distance were measured. The percent contraction of the striated urethral sphincter from before voiding to just before initiation of voiding was 14% in the normal group and 5% in the voiding dysfunction group. The percent contraction of the anterior fibromuscular stroma from before voiding to just before initiation of voiding was 11% in the normal group and 1% in the voiding dysfunction group; the percent contraction of the muscles was significantly greater in the normal group (P < 0.05). Striated urethral sphincter and anterior fibromuscular stroma contraction at initiation of voiding open the bladder neck and urethra. This plays an important role in the smooth initiation of voiding.

THE VALIDITY AND RELIABILITY OF A NEW QUESTIONNAIRE FOR PROSTATIC SYMPTOM SCORING, THE SPSS (SAITAMA PROSTATE SYMPTOM SCORE) AND ITS VALUE COMPARING TO THE IPSS (INTERNATIONAL PROSTATE SYMPTOM SCORE)

Clinical characteristics of patients with and without CP. BPH BPH+CP p Age (mean) (years) 68.1 67.7 0.793 Symptom score (mean) 23.2 22.6 0.636 Qol score (mean) 4.9 4.9 0.931 Nocturia (mean) 3.1 3.6 0.147 PSA mean (ng/ml) 3.8 3.3 0.947 Symptom duration (mean) (years) 3 3 0.992 Prostate weight (mean) (grams) 53.8 56.3 0.328 % resected tissue (mean) 42.1 42.2 0.962 Urinary retention rate (%) 34.3 39.6 0.208