Abbreviations & AcronymsAbstract: 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.

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We evaluated the effect of hachimijiogan in 30 cases of anticholinergic agent and α-blocker resistant LUTS. International Prostate Symptom Scores (IPSS), QOL scores, Benign Prostatic Hyperplasia Impact Index (BII) scores and urinary 8-OHdG of the patients were statistically much improved. This study demonstrated improvement in urinary symptoms, urinary QOL and oxidative stress, in LUTS resistant to anticholinergic agents and α-blockers. Further long-term studies will be needed not only in urinary symptoms, but also in effect as an anti-aging medicine. LUTS, hachimijiogan, anticholinergic agent, oxidative stress α α