Reliability of Pain Vision method for assessment of labor pain: a comparison with visual analog scale

VernacularTitle:Pain Vision法评估分娩疼痛程度的可靠性:与VAS的比较
Author: Xiangyang CHANG ; Mingjuan LIU ; Yinfa ZHANG ; Lingzhen ZHANG ; Lizhong WANG ; Ming YAO
Publication Type:Journal Article
Keywords: Pain measurement; Labor pain
From: Chinese Journal of Anesthesiology 2013;33(11):1349-1350
CountryChina
Language:Chinese
Abstract: Objective To evaluate the reliability of Pain Vision method for assessment of labor pain.Methods Eighty-nine nulliparous parturients who were at full term and at the latent period of the first stage of labor,aged 19-31 yr,weighing 55-85 kg,were enrolled in this study.The degree of labor pain was assessed using Pain Vision method and VAS.Pain degree is calculated from two parameters,current perception threshold and pain compatible electrical current by using a somatosensory evoked potential stimulator.The former parameter was defined by the lowest electrical current detected; the latter parameter defined by the electrical current judged as being compatible with the intensity of ongoing pain.Linear correlation of VAS scores with pain degree was analyzed.Results There was no correlation between pain degree and VAS scores,and the correlation coefficient was 0.206 (P ＞ 0.05).Conclusion Pain Vision method can not be applied for objective assessment of labor pain.