Evaluation of erectile dysfunction and sleep-related erections. [Review essay]

Significant advances in this past decade have improved understanding of erectile physiology. A variety of tests are available for diagnosing impotence. SRE testing provides objective physiological information that is useful for indexing erectile capability and formulating a rational treatment plan. As such, SRE testing is a powerful noninvasive tool for assessing dysfunction. In making a final diagnosis, the skillful clinician relies on more than one assessment parameter and on clinical acumen. (Original abstract)