陰茎硬度・周径連続測定法による本邦正常成人の夜間陰茎勃起現象の解析 CONTINUOUS MONITORING OF PENILE RIGIDITY AND TUMESCENCE IN JAPANESE WITHOUT ERECTILE DYSFUNCTION
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陰茎硬度周径連続測定法を本邦において臨床応用するにあたり, 正常人における夜間陰茎勃起現象の解析とその安全性について検討した.<br>本邦正常成人16名 (年齢24～44歳, 平均31.1歳) を対象とし, 陰茎硬度周径連続測定にはRigiScan™を用いた. 測定部位は環状溝から約5mm陰茎根部寄り (遠位側) と根部 (近位側) の2箇所である. 陰茎の平均最小周径は遠位側で62.7mm, 近位側で65.4mmであり, 勃起時の平均最大周径は遠位側で102.5mm, 近位側で108.6mmであった. 周径が10mm以上のびたときを勃起とすると約1時間20分に1回の頻度で勃起が生じており, この勃起の平均持続時間は遠位側で23.0分, 近位側で38.3分であった. 10分以上持続した硬度の最大値は遠位側で82.9%, 近位側で85.4%であった. 1例に測定部位の一部に発赤を認めたが処置を必要とするような副作用はなかった. RigiScanによる陰茎硬度周径連続測定は簡便, 安全かつ客観的に夜間陰茎勃起現象をとらえることができ, 今後勃起不全の診断, 治療効果の判定に役立つものとおもわれる.
Continuous monitoring of penile rigidity and tumescence has been proved to be of use for accurate diagnosis of erectile impotence, since it provides objective recording of penile rigidity as well as circumferential expansion. Prior to clinical use of this procedure in Japan, a study was performed to clarify normal features of nocturnal penile tumescence of Japanese and to ensure safety of this procedure. The subjects consisted of 16 normal volunteers, aged from 24 to 44 years. With fully informed consent of the volunteers, nocturnal penile rigidity and circumferential expansion were simultaneously measured for three consecutive nights by means of RigiScan at the base of the penis (base) and at about five milimeters proximal to the coronary sulcus (tip). The minimum circumference of the penis was 62.7±4.6mm (mean±SD) at the tip and 65.4±9.3mm at the base. The maximum circumference, which meant full erection in the normal volunteers, was 102.5±14.2mm at the tip and 108.6±14.7mm at the base. The mean duration of tumescence, i. e. circumference expansion more than 10mm, was 23.0±6.9 minutes at the tip and 38.3±12.0 minutes at the base. The mean rate of episodes of circumference expansion more than 10mm was 0.75±0.27 per hour at the tip and 0.70±0.26 per hour at the base. The maximum rigidity lasting more than 10 minutes was 82.9±10.1% at the tip and 85.4±8.4% at the base. Out of the 16 volunteers, 10 felt discomfort at the last episode of full erection on the penis where the loops were placed. Since the discomfort followed after several episodes of full erection, it did not disturb the assessment of penile rigidity and tumescence. None of the subjects made an error in operating the instrument. With its ambulatory character and safety, the RigiScan will be of use for diagnosis and treatment of patients with erectile impotence.
- The Japanese Journal of Urology
The Japanese Journal of Urology 82(6), 955-960, 1991
The Japanese Urological Association