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October 21, 2017
43029.416667 - 43029.5
Room Exhibit Hall B2 - Area D
Simple Prediction of the Optimal Insertion Depth of Esophageal Temperature Probes in Children
Jisoo Lee, M.D., Joon-Yong Jung, M.D., Sanghyun Hong, M.D.
Seoul St. Mary's Hospital, Seoul, Korea, Republic of
Disclosures: J. Lee: None. J. Jung: None. S. Hong: None.
Background: Placing an esophageal temperature probe (ETP) in the optimal esophageal site is important in various anesthetic and critical care settings to accurately monitor the core temperature of a pediatric patient. However, no reported study has provided a formula predicting the insertion depth of ETP placement in children based on direct measurement of the optimal depth. Objectives: The aim of this study was to develop a simple and reliable method to determine the optimal depth of ETP placement in children. Methods: Using preoperative chest CT scans, intraoperative chest X-rays, and the actual depth of ETP insertion, we measured the optimal depth of ETP placement retrospectively in 181 children aged 3-13 years who underwent minimally invasive repairs of the pectus excavatum and removal of a pectus bar. A linear regression analysis was performed to assess the correlation of the optimal depth of ETP placement with the children’s age, weight, and height. Results: The optimal depth of ETP placement had a greater correlation with height than age or weight, and the best-fit equation was 0.180 × height + 6.749 (cm). We also obtained a simplified formula, which showed no statistically significant difference from the best-fit equation in predicting the optimal depth of ETP placement: height / 5 + 5 (cm). Conclusions: The optimal depth of ETP in children has a close correlation with height and could be calculated with a simple formula height / 5 + 5 (cm).

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