Analysis of retrograde ejaculation using color Doppler ultrasonography before and after transurethral collagen injection

Nagai, Atsushi; Nasu, Yasutomo; Watanabe, Masami; Tsugawa, Masaya; Iguchi, Hiroki; Kumon, Hiromi

doi:10.1038/sj.ijir.3901202

Cited by 19 publications

(13 citation statements)

References 2 publications

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“…Immediately afterwards, rhythmical ejection of seminal fluid from the seminal vesicles through the ejaculatory duct and into the bulbous urethra was observed. The findings were identical to those obtained in our previous study 2,3 (Figs 1b‐II,2b‐II,3b).…”

Section: Resultssupporting

confidence: 92%

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Ejaculatory dysfunction caused by the new α₁‐blocker silodosin: A preliminary study to analyze human ejaculation using color Doppler ultrasonography

et al. 2008

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Objectives: In order to clinically investigate the mechanism of ejaculatory dysfunction attributable to the a1-blocker silodosin, a real-time observation of ejaculation by healthy males was performed. Methods: Following intake of silodosin, a newly developed selective a1-blocker for benign prostatic hypertrophy, ejaculation was dynamically observed using color Doppler ultrasound in three healthy males. Normal ejaculation was also investigated in the same manner. Results: With silodosin intake, no antegrade ejaculation was observed in cases 1 or 2. In case 1, seminal fluid slowly but continuously flowed out from the seminal vesicles into the bladder. In case 2, only a small amount of seminal fluid flowed into the bladder during the ejaculatory sensation. In case 3, ejection of a small amount of semen from the external urethral orifice was observed and inflow of a small amount of seminal fluid into the bladder was also captured. Without silodosin intake, all three subjects exhibited antegrade ejaculation. Conclusions:The mechanism of ejaculatory dysfunction is intricately related to retrograde ejaculation (retrograde inflow of seminal fluid), insufficient contraction of the seminal vesicles, and insufficient rhythmic contraction of the muscles of the pelvic floor.

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Section: Resultssupporting

confidence: 92%

“…The use of ultrasonic diagnostic devices has enabled analysis and clarification of the male ejaculatory process 1–3 . In particular, dynamic analysis of ejaculation has become possible using color Doppler ultrasonography.…”

Section: Introductionmentioning

confidence: 99%

Ejaculatory dysfunction caused by the new α₁‐blocker silodosin: A preliminary study to analyze human ejaculation using color Doppler ultrasonography

et al. 2008

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“…CDUS provides novel information on human ejaculation, and might be useful in routine clinical examination of ejaculatory dysfunction . CDUS is particularly important for observation of blood flow to the prostate, the shape of the bladder neck, seminal emission, the level of the pelvic floor and presence of orgasm.…”

Section: Discussionmentioning

confidence: 99%

“…), with no ejection of semen from the external urethral orifice. This information allowed diagnosis of RE, with a strong possibility that the cause was the bladder neck remaining open, and not decreased seminal emission, based on our previous findings …”

Section: Case Reportsmentioning

confidence: 91%

“…Ejaculatory dysfunction causes deterioration of the quality of sexual life. We have described the dynamic analysis of ejaculation using CDUS in a healthy volunteer and in a patient with spinal cord injury with complete RE . We also evaluated the effect of a highly selective alpha‐1 blocker, silodosin, on ejaculation in normal men using the same approach .…”

Section: Introductionmentioning

confidence: 99%

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Practical application of color Doppler ultrasonography in patients with ejaculatory dysfunction

et al. 2015

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We describe two cases in which dynamic analysis of ejaculation using color Doppler ultrasonography was useful in diagnosis of ejaculatory dysfunction and planning of therapy. The first patient was a 32-year-old man with a diagnosis of retrograde ejaculation. A bladder neck collagen injection was carried out, as the main cause was thought to be the bladder neck remaining open during ejaculation. The patient had antegrade ejaculation 1 week later. The second patient was a 48-year-old man with a diagnosis of anorgasmia accompanied by decreased seminal emission and insufficient function of the rhythmic pelvic striated muscles. The patient was prescribed etilefrine hydrochloride 15 mg/day. The symptom improved 2 weeks after starting this drug. These cases suggest that the use of color Doppler ultrasonography during ejaculation can improve the understanding of ejaculatory dysfunction and therapy for this condition.

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Male squirting: Analysis of one case using color Doppler ultrasonography

et al. 2018

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Introduction 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. Case presentation 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. Conclusion 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.

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Analysis of retrograde ejaculation using color Doppler ultrasonography before and after transurethral collagen injection

Cited by 19 publications

References 2 publications

Ejaculatory dysfunction caused by the new α₁‐blocker silodosin: A preliminary study to analyze human ejaculation using color Doppler ultrasonography

Ejaculatory dysfunction caused by the new α₁‐blocker silodosin: A preliminary study to analyze human ejaculation using color Doppler ultrasonography

Practical application of color Doppler ultrasonography in patients with ejaculatory dysfunction

Male squirting: Analysis of one case using color Doppler ultrasonography

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Analysis of retrograde ejaculation using color Doppler ultrasonography before and after transurethral collagen injection

Cited by 19 publications

References 2 publications

Ejaculatory dysfunction caused by the new α1‐blocker silodosin: A preliminary study to analyze human ejaculation using color Doppler ultrasonography

Ejaculatory dysfunction caused by the new α1‐blocker silodosin: A preliminary study to analyze human ejaculation using color Doppler ultrasonography

Practical application of color Doppler ultrasonography in patients with ejaculatory dysfunction

Male squirting: Analysis of one case using color Doppler ultrasonography

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Ejaculatory dysfunction caused by the new α₁‐blocker silodosin: A preliminary study to analyze human ejaculation using color Doppler ultrasonography

Ejaculatory dysfunction caused by the new α₁‐blocker silodosin: A preliminary study to analyze human ejaculation using color Doppler ultrasonography