Barrett D M, Wein A J
J Urol. 1981 Apr;125(4):538-41. doi: 10.1016/s0022-5347(17)55098-3.
More than 200 patients have undergone combined uroflowmetry and external sphincter electromyography studies in our urodynamic laboratories. Pediatric surface electrocardiographic electrodes placed on the perianal skin were used to monitor skeletal muscle electromyographic activity while the patient voided into a standard load-cell type of uroflowmeter. The findings indicate clearly that 1) flow electromyography is reliable and easy to perform, 2) striated muscle electromyographic activity is reduced during normal voiding, 3) external sphincter dyssynergia is rare in patients without true neurologic disease and 4) many patients, especially women, void by straining, which causes an increase in external sphincter electromyographic activity but, generally, does not impair voiding. Results of this study suggest that sphincter dyssynergia has been overdiagnosed. With the use of the flow electromyography study the behavior of the external striated muscle sphincter during voiding can be demonstrated easily and reliably in most clinical urodynamic evaluations.
在我们的尿动力学实验室中，已有200多名患者接受了联合尿流率测定和外括约肌肌电图检查。在患者向标准称重传感器型尿流计排尿时，使用置于肛周皮肤的儿科体表心电图电极来监测骨骼肌肌电图活动。研究结果清楚地表明：1）尿流肌电图可靠且易于操作；2）正常排尿期间横纹肌肌电图活动降低；3）在无真性神经疾病的患者中外括约肌协同失调罕见；4）许多患者，尤其是女性，通过用力排尿，这会导致外括约肌肌电图活动增加，但一般不会损害排尿。本研究结果提示，括约肌协同失调被过度诊断。在大多数临床尿动力学评估中，通过尿流肌电图检查能够轻松且可靠地显示排尿期间外横纹肌括约肌的行为。
