Nervi obturatorius reflex and penis erection reflex in the process
of transurethral electrovaporization of the prostate
SUN Ying-hao WANG Lin-hui QIAN Song-xi
ZAO Jin-xing LIAO Guo-xiang XU Chuan-liang
(Department of Urology,the Affiliated Changhai Hospital,Second Military Medical University,Shanghai,200433)
Abstract Purpose:To evaluate the possible mechanism of nervi obturatorius reflex and penis erection reflex appeared in the operation of electrovaporization of the prostate (TVP) and investigate the preventive measures against the reflexes.Methods:The clinical data of 156 cases of benign prostatic hyperplasia (BPH) treated with TVP were summarized.Results:Nervi obturatorius reflex and penis erection reflex appeared in 8 (5.1%) and 7 (4.5%) patients respectively.These reflexes were all appeared when the electrovaporization probe was near the branch of the nervi and the electrovaporization electricity was higher.Conclusions:The main reason of the appearence of the reflexes is lower frequence electricity mixed into high frequence one.The power of the electrovaporization electricity determines the appearence of the reflexes.More attention must be paid to the reflexes in order to avoid perforation of bladder wall or prostate capsule.
Key words Prostatic hypertrophy Prostatectomy Obturator nerve Penile erection Reflex,abnormal