Single-center, retrospective, observational study.
University hospital.
Anesthetic records of patients older than 20 years who received one-lung ventilation using a left-sided DLT were included.
The patients’ sex, age, body weight, BH, and the final correct insertion depth of the left-sided DLT after fiberscope verification were recorded. Linear regression and correlation were used to analyze the data.
One hundred seventy anesthetic records were analyzed. The insertion depth was distributed normally in 4 groups with different BH intervals. The correlations between the correct insertion depth and all the lengths calculated using each formula were significant (p<0.001), with a similar high coefficient of determination (r = 0.809). The regression line derived from the authors’ formula—0.1977×BH – 4.2423 (cm)—showed the most accuracy in predicting the correct insertion depth.
The height-based formula of 170 – 29.5 – 5 – 1 (the insertion depth is 29.5 cm for patients who are 170 cm tall, and the insertion length is increased or decreased by 1 cm for every 5 cm increase or decrease in BH) modified by the equation of 0.1977×BH – 4.2423 is a useful tool to predict the optimal insertion depth in initially blind left-sided DLT insertion.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址:北京市海淀区学院路29号 邮编:100083 电话:办公室:(+86 10)66554848;文献借阅、咨询服务、科技查新:66554700 |