Bulbocavernosus reflex latency time(BCRL) land Vibration induced erection(VIE) were evaluated in 85 impotent patients. Underlying causes of erectile failure were vasculogenic in 20, pelvic injury in 22, spinal cord injury in 16, diabetogenic in
14,
psychogenic in 9, intracerebral hemorrhage in 2 and endocrinogenic in 2.
@ES The results were as Follows.
@EN 1. The mean latency time in the 81 patients were 37.2±8.4m/sec(Left), 36.6±7.1m/sec(Right). In the remaining 4 patients the bulbocavernosus reflex were absent.
2. Of 9 psychogenic impotence, 1 had abnormal BCRL, 37% of normal BCRL patients were VIE responder.
3. Forty one percent of spinal cord injuries had abnormal BCRL, 67% of abnormal BCRL cases were VIE non responder and 90% of normal BCRL cases were VIE non responder.
4. Of 20 vasculogenic impotence 2 had abnormal BCRL, all of abnormal BCRL cases were VIE responder. Eighty three percent of normal BCRL subjects were VIE non-responder.
5. Forty one percent of pelvic injuries had abnormal BCRL, all of abnormal BCRL, cases were VIE non-responder. Ninety two percent of normal BCRL cases were VIE non-responder.
6. Forty three percent of diabetogenic impotence had abnormal BCRL, 83% of abnormal BCRL patients were VIE non-responder and all of normal BCRL patients were BCRL. But frequency of abnormal BCRL was higher in spinal cord injuries (38%), pelvic
injuries(41%), diabetogenic impotence(43%), compared with control group(8%; psychogenic, vasculogenic, intracerebral hemorrhage. Endocrinogenic) (P<0.01). Remarkably delayed BCRL(above 45.6m/sec) cases were not found in control group, but its
incidence
was increased in spinal cord injuries (32%), pelvic injuries (23%) and diabetogenic impotence (29%). And all of these cases were subnormal VIE responder. In conclusion, all of abnormal BCRL cases are not neurogenic impotence and normal BCRL
patients are
not neurologically free. If subject has remarkably delayed BCRL in VIE non-responder, combination of BCRL land VIE is very helplful diagnostic tool for neurogenic impotence.
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