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目的探讨阴茎血流指数(PFI)在勃起功能障碍(ED)筛查诊断中的临床意义。方法采用国产SW-3501男性功能诊断治疗系统中的血流多普勒探测仪测定37例主诉ED患者的左侧桡动脉和阴茎背动脉、双侧阴茎海绵体动脉的血流速度,求得PFI值;对6例PFI>6和随机抽取6例PFI<6的患者分别进行了彩色双功能多谱勒超声检查。结果阴茎疲软状态下37例患者的PFI值为0.9～8,平均(3.5±0.6)。其中有6例PFI>6,平均为(7.4±0.9),3 1例P FI<6,平均(3.3±0.5);随机抽取6例PFI<6的患者经彩色双功多普勒检查,其中1例诊断为血管性ED,余5例未发现异常;6例PFI>6的患者经彩色双功能多谱勒超声检查5例诊断为血管性ED,其中有1例PFI>8,考虑为动脉性ED。统计学上的诊断试验方法提示,其灵敏度和特异度均为83.3%,误诊率和漏诊率均为16.7%。结论 PFI的测定对血管性ED的诊断具有筛查意义,它是一种无创、简便、经济和实用的诊断方法 。
Objective To investigate the clinical significance of penile blood flow index (PFI) in the screening diagnosis of erectile dysfunction (ED). Methods The blood flow velocity in the left radial artery, dorsal penile artery and bilateral penile cavernous artery in 37 patients with ED was measured by the blood flow Doppler detector in domestic SW-3501 male functional diagnosis and treatment system to obtain the PFI Values; Color duplex Doppler sonography was performed on 6 patients with PFI> 6 and 6 patients with PFI <6 at random. Results In the penile weak state, the PFI of 37 patients was 0.9 ~ 8, with an average of (3.5 ± 0.6). Among them, 6 cases had PFI> 6 with an average of (7.4 ± 0.9) and 31 cases with P FI <6 (average 3.3 ± 0.5). Six patients with PFI <6 were randomly selected by color duplex Doppler imaging One case was diagnosed as vascular ED, the other five cases were found no abnormality. Six cases with PFI> 6 were diagnosed as vascular ED by color duplex ultrasonography in 5 cases, of which 1 case had PFI> 8, Sex ED. Statistical diagnostic test methods suggest that the sensitivity and specificity were 83.3%, misdiagnosis rate and missed diagnosis rate was 16.7%. Conclusion The determination of PFI has significance in the diagnosis of vascular ED. It is a non-invasive, simple, economical and practical diagnostic method.