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Comparison of three methods of penile vibratory stimulation for semen retrieval in men with spinal cord injury
W Chong1, E Ibrahim2, T C Aballa2
1Department of Urology, University of Miami Miller School of Medicine, Miami, FL, USA.
Study Design:
Prospective, three-way crossover design.
Objective:
Penile vibratory stimulation (PVS) is recommended as the first line of treatment for semen retrieval in anejaculatory men with spinal cord injury (SCI). This study compared ejaculatory success rates and patient preference for three methods of PVS within the same group of men with SCI.
Setting:
Major medical university.
Methods:
Fifteen men with SCI each received three methods of PVS. Method 1 (M1): applying one FertiCare Personal device to the dorsum or frenulum of the glans penis; Method 2 (M2): 'sandwiching' the glans penis between two FertiCare devices; Method 3 (M3): sandwiching the glans penis between the two vibrating surfaces of the Viberect-X3 device. The order of M1, M2 and M3 was varied to control for sequencing effects. Following each PVS trial, subjects rated their experience on a questionnaire with scaled responses.
Results:
Ejaculation success rates were high for each method; however, ejaculation latency was significantly longer with M3 compared with M1 or M2. In survey questions about patient preference, there were no significant differences between M1 and M2. In contrast, M3 was rated lower than M1 and M2 in patient preference. Semen collection may be more difficult with the Viberect device.
Conclusions:
On the basis of these findings, we recommend attempting PVS with one FertiCare device. If that fails, use two FertiCare devices. Although the Viberect-X3 was preferred less by patients, it had similar efficacy as the Ferticare vibrator(s) and may be suitable for home use by some patients.
