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Pudendal nerve somatosensory evoked potentials in patients with voiding and/or erectile dysfunction: correlating test
1Department of Urology, State University of New York Health Science Center at Syracuse, USA.
Purpose:
We evaluated the diagnostic efficacy of pudendal nerve somatosensory evoked potential testing in patients with voiding and/or erectile dysfunction.
Materials And Methods:
A total of 55 consecutive patients with voiding and/or erectile dysfunction underwent pudendal nerve somatosensory evoked potential testing during a 2.5-year period. P1 latencies were analyzed in terms of neurological history and neurological physical examination.
Results:
Abnormal P1 latencies were noted in 46.7% of patients with a positive neurological history (p = 0.0060), 52.4% with a positive neurological physical examination (p = 0.0580), and 64.7% with a positive history and physical examination (p = 0.0007). No patient with a negative neurological history had abnormal P1 latencies.
Conclusions:
Positive neurological history and physical examination findings in patients with voiding and/or erectile dysfunction correlate significantly with abnormal pudendal nerve somatosensory evoked potential latencies. The subgroup of patients with a positive neurological history and physical examination has the greatest diagnostic yield and is best suited for pudendal nerve somatosensory evoked potential testing.