Bulbocavernosus Muscle Check

BCR: a sharp contraction of the bulbocavernosus and ischiocavernosus muscles when the glans penis is suddenly compressed or tapped.

Background: To investigate normal changes in the bulbocavernosus reflex (BCR) during the micturition cycle, we examined the change in BCR during the micturition cycle using an evoked potential reaction of the BCR (BCR-EP).

Methods: Fourteen normal subjects were examined in the study. The BCR-EP was recorded at empty bladder, filled bladder, during voiding and at empty bladder after voiding. To elicit the BCR-EP, the dorsal nerve of the penis was stimulated by two ring electrodes and an electromyogram of the external urethral sphincter was recorded. The maximum amplitude was measured to evaluate changes in the BCR.

Results: The amplitude of the BCR was increased by bladder filling and the ratio of the amplitude at filled bladder/amplitude at empty bladder was 1.32 ± 0.39. The stable BCR-EP elicited by stimulation at empty bladder disappeared during voluntary voiding in 13 of 14 subjects. However, as stimulation was increased in seven subjects, the BCR-EP was again seen clearly.

Conclusions: The BCR varies during the micturition cycle, although in normal subjects this variation occurs within a relatively narrow range. Changes in the BCR out of the normal range (e.g. large acceleration by bladder filling or insufficient inhibition during voiding) could suggest the existence of neurogenic disease.

The signup sheet is at the receptionist's desk. 😁

Has anyone ever had the muscle checked during an exam. It seems as if they may check when they evaluate a man for impotence. I would be interested in hearing about it, please share.

This is a reflex test it consists of the contraction of the bulbocavernous and ischiocavernous muscles when the glans (the bulb of the penis) is squeezed suddenly or tapped. I've heard its used to assess spinal cord damage at the level of S4 and S5. In the male it acts to squeeze out that last drop of urine or semen. In women a weak sphincter of the vagina.

DrLaennec ClinicalUSMLE (Yahoo chat)

[quote author=DrLaennec link=topic=24537.msg235119#msg235119 date=1250073910]

This is a reflex test it consists of the contraction of the bulbocavernous and ischiocavernous muscles when the glans (the bulb of the penis) is squeezed suddenly or tapped. I've heard its used to assess spinal cord damage at the level of S4 and S5. In the male it acts to squeeze out that last drop of urine or semen. In women a weak sphincter of the vagina.

DrLaennec ClinicalUSMLE (Yahoo chat)

[/quote]

What do you mean by "WEAK"? I can crush your cock with mine.

I can easily hold my stainless steel Kegelcisor while standing as long as I want (or my husband makes me) without it falling out.

[quote author=Switchablesusie link=topic=24537.msg235134#msg235134 date=1250079001]

What do you mean by "WEAK"? I can crush your cock with mine.

I can easily hold my stainless steel Kegelcisor while standing as long as I want (or my husband makes me) without it falling out.

[/quote]

For some reason that comment reminded me of this...

http://www.youtube.com/watch?v=yH8yuld4DUE

😁