Lubowski D Z, Swash M, Nicholls R J, Henry M M
St. Mark's Hospital, London, UK.
Br J Surg. 1988 Nov;75(11):1095-7. doi: 10.1002/bjs.1800751115.
The relationship between perineal descent and pudendal nerve damage was tested in 57 consecutive patients by measuring the left and right pudendal nerve terminal motor latency (PNTML) before and after a maximal defaecation straining effort. In 13 patients the PNTML was also measured 1 and 4 min later. The difference between the mean PNTML before and after straining (delta PNTML) was correlated with the amount of descent (r = 0.40, P less than 0.005), and with the perineal position during straining (r = -0.46, P less than 0.001). Four minutes after the straining effort the PNTML again approached the resting value in each subject. These findings support the concept that perineal descent causes pudendal nerve damage.
通过在57例连续患者中，于最大排便用力前后测量左右阴部神经终末运动潜伏期（PNTML），来检测会阴下降与会阴部神经损伤之间的关系。在13例患者中，还于用力后1分钟和4分钟测量了PNTML。用力前后平均PNTML的差值（δPNTML）与下降量相关（r = 0.40，P < 0.005），且与用力时的会阴位置相关（r = -0.46，P < 0.001）。用力后4分钟，每个受试者的PNTML再次接近静息值。这些发现支持了会阴下降导致阴部神经损伤这一概念。
