Ek A, Bradley W E, Krane R J
J Urol. 1983 May;129(5):964-6. doi: 10.1016/s0022-5347(17)52486-6.
Nocturnal penile tumescence is used commonly to evaluate erectile dysfunction. However, this test is not equivalent to erection since it measures circumferential change only rather than the crucial variable of penile rigidity. We present a new concept in the measurement of penile rigidity--the capability of a patient during sleep to break a band furnished with pre-set snap-gauges with different release-force constants applied around the penile shaft. The snap-gauge band was tested simultaneously with the recording of nocturnal penile tumescence measuring penile rigidity rather than tumescence.
夜间阴茎勃起常用于评估勃起功能障碍。然而，该测试并不等同于勃起，因为它仅测量周长变化，而非阴茎硬度这一关键变量。我们提出了一种测量阴茎硬度的新概念——患者在睡眠期间打破围绕阴茎干设置的带有不同释放力常数的预设弹簧秤带的能力。在记录夜间阴茎勃起以测量阴茎硬度而非肿胀情况时，同时对弹簧秤带进行了测试。
