Age-related Erectile Response to Short Erotic Stimulation in Normal Adults / 대한비뇨기과학회지

Simultaneous monitoring of penile photoelectric plethysmography, penile tumescences, penile rigidity, bulbocavernosus-ischiocavernosus EMG and EKG was attempted to investigate the age-related erectile response to short period erotic film in 50 normal males and to elucidate the range of its characteristics for the diagnosis of impotence. The results obtained were summarized as follows ; l. Variability was observed in temporal relationship between penile pulse amplitude and penile erection. Of the 45 subjects who showed erection and/or increase in penile pulse amplitude 4 categories of response could be defined : Type I was observed in 13 subjects (28.9%)-erection and increased penile pulse amplitude occurring in parallel ; Type II, in 26 subjects(57.8%)_erection with increased penile pulse amplitude during the development or decline of erection but not during maximum erection ; Type III, in 4 subjects(8. 8%)_erection with no change in penile pulse amplitude ; and Type IV, in 2 subjects (4.4 %)_increased penile pulse amplitude without any erection. These results suggest that penile erection does not exclusively depend increased penile arterial blood flow but upon the cooperative mechanisms with the action of venous blockade which corresponds flexibly to the degree of arterial blood flow. 2. Following erotic stimulation, there was tendency to delay in latency to erection with aging. However, no difference in penile tumescence and rigidity among age groups was observed. This indicates that if the subject is affected by libido owing to strong erotic stimulation, maximum erection ensues regardless of aging. 3. The fact that subjects with good erection shows enough libido and that maximum erection ensues if erection develop under strong erotic stimulation suggests visual sexual stimulation method would be useful in differentiatial diagnosis of erectile dysfunction.

Value of Scrotal Ultrasonography in Diagnosis of Acute Scrotum / 대한비뇨기과학회지

Differential diagnosis of acute scrotum is very important. As the chances of salvaging testicular function are inversely proportional to the elapsed time between onset of torsion/rupture and surgical repair of testes, prompt and accurate diagnosis is imperative. 17 patients with acute scrotum who had visited to the Department of Urology, Yeungnam University Hospital from June l985 to May l986 underwent scrotal ultrasonography to evaluate the value of scrotal ultrasonography for the differentiation of the diseases that cause acute scrotum. Scrotal ultrasonographic findings in 8 patients with acute epididymitis were enlargements of the epididymes with decreased echogenicity in 7 and enlargement of the epididymis and testis with mixed echogenicity in 1. In 3 patients with testicular torsion ultrasonogram revealed enlarged epididymis and testis with homogeneous and slightly decreased echogenicity in 1 patient of acute stage (within 24 hours) and enlarged epididymis and testes with diffuse mixed echogenicity in 2 patients. In 6 patients with scrotal trauma ultrasonogram revealed extratesticular fluid collection with well-defined intact in 1 patient of intrascrotal hematoma. 2 patients with testicular hematoma showed well-defined testes with intratesticular focal echolucent region on ultrasonogram. 3 patients with testicular rupture revealed mixed echogenicity in an injured hemiscrotum with well-defined testes in 2 out of 3.