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本文自１９９５年５月～１９９６年６月对１６例静脉性勃起功能障碍（ＶＥＤ组）应用药物性阴茎双功能超声检测（ＰＰＤＵ）来观察静脉关闭机制受损所致阴茎血流循环阻力变化。阴茎血流循环阻力监测指标（１）阻力指数（ＲＩ），（２）Ａ／Ｂ比值，（３）搏动指数（ＰＩ）。并以３２例心理性勃起功能障碍（ＰＥＤ组）作对照。研究结果提示ＶＥＤ组ＲＩ＜１，Ａ／Ｂ比值＞０。ＰＥＤ组ＲＩ≥１，Ａ／Ｂ比值≤０。ＶＥＤ组ＰＩ平均数低于ＰＥＤ组，但参数有重叠现象，两组３项阻力指标参数有非常显著性差异（Ｐ＜０．０１）。我们认为静脉关闭机制障碍使海绵体内压下降，并引起阴茎血流循环阻力改变，阻力指标ＲＩ＜１和Ａ／Ｂ比值＞０可作为静脉关闭机制障碍判断标准，而ＰＩ的价值有待进一步探讨。
This article from May 1995 to June 1996 16 cases of venous erectile dysfunction (VED group) application of drug penile dual function ultrasound (PPDU) to observe the mechanism of impaired venous closure penile blood flow resistance changes. Penile blood flow resistance monitoring indicators (1) resistance index (RI), (2) A / B ratio, (3) pulsatility index (PI). 32 cases of psychological erectile dysfunction (PED group) as a control. The results suggest that VED group RI <1, A / B ratio> 0. PED group RI ≥ 1, A / B ratio ≤0. The mean PI of VED group was lower than that of PED group, but the parameters were overlapped. There were significant differences between the three groups (P <0.01). We believe that the barrier mechanism of venous closure causes the intracavernous pressure to drop and cause the penile blood circulation resistance to change. The resistance index RI <1 and the A / B ratio> 0 can be used as the criterion for the obstacle of venous closure mechanism, and the value of PI needs to be further explored.