Hara Ryoei, Nagai Atsushi, Nakatsuka Tohta, Ohira Shin, Fujii Tomohiro, Miyaji Yoshiyuki
Department of Urology Kawasaki Medical School Kurashiki Okayama Japan.
IJU Case Rep. 2018 Oct 10;1(1):19-21. doi: 10.1002/iju5.12021. eCollection 2018 Nov.
There is no scientific evidence for the mechanism of male squirting, although the term is common in mass media. Here, we describe the first recording of male squirting using color Doppler ultrasonography.
We recruited a 25-year-old male volunteer who was able to have male squirting. A transrectal ultrasound probe was inserted into the rectum and male squirting was observed following normal ejaculation. With penis stimulation for a further 20 s after ejaculation, translucent misty fluids with a creatine level similar to that of urine came from the extraurethral orifice for about 60 s. Color Doppler ultrasonography recorded strong contraction of the prostate and pelvic striated muscles just before male squirting, and then the stream went from the urinary bladder through the prostatic urethra.
In male squirting, urine in the bladder gushes out from the external urethral orifice due to strong contraction of the prostate and pelvic striated muscles.
尽管“男性射精”一词在大众媒体中很常见，但目前尚无关于其机制的科学证据。在此，我们描述了首次使用彩色多普勒超声对男性射精进行的记录。
我们招募了一名能够射精的25岁男性志愿者。将经直肠超声探头插入直肠，在正常射精后观察到男性射精。射精后对阴茎再刺激20秒，尿道口会流出半透明的雾状液体，其肌酸水平与尿液相似，持续约60秒。彩色多普勒超声记录到在男性射精前前列腺和盆底横纹肌强烈收缩，然后液体从膀胱经前列腺尿道流出。
在男性射精过程中，膀胱中的尿液由于前列腺和盆底横纹肌的强烈收缩而从尿道口喷出。
