Abstract：Objective To investigate the clinical effect of visual intubation soft lens (VIS) in the positioning of doublelumen bronchial catheter (DLT).Methods A total of 60 patients who admitted to our hospital from February 2018 to October 2019 for elective thoracic surgery requiring one-lung ventilation were selected as research subjects and divided into the control group and the observation group according to the random number table method,with 30 cases in each group.All patients underwent aspiration combined with general anesthesia.The control group achieved chest auscultation and the observation group achieved VIS positioning.The total positioning accuracy,the total incidence of complications,the positioning time of double-lumen bronchial catheter and the vital signs were compared between the two groups.Results The total positioning accuracy of the observation group was higher than that of the control group,and the difference was statistically significant (P＜0.05).The total incidence of complications in the observation group was lower than that in the control group,and the difference was statistically significant (P＜0.05).The positioning time of left and right double-lumen bronchial catheter in the observation group were shorter than those in the control group,and the differences were statistically significant (P＜0.05).During the positioning period,there were no statistically significant differences in pulse oxygen saturation,partial pressure of carbon dioxide at the end of respiration and mean arterial pressure between the two groups (P＞0.05).Conclusion The VIS in the positioning of DLT has higher positioning accuracy,can shorten the positioning time,reduce the complication rate,and the vital signs index is stable.It is worthy of clinical promotion and application.
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