Effects of anatomical position on esophageal transit time： A biomagnetic diagnostic technique

• Published in: World journal of gastroenterology : WJG Vol. 14; no. 37; pp. 5707 - 5711
• Main Author: Teodoro Cordova-Fraga Modesto Sosa Carlos Wiechers Jose Maria De la Roca-Chiapas Alejandro Maldonado Moreles Jesus Bernal-Alvaradodo, Raquel Huerta-Franco Raquel Huerta-Franco
• Format: Journal Article
• Language: English
• Published: United States Instituto de F(i)sica,Universidad de Ouanajuato,León 37150,Gto.,Mexico%Instituto de Investigaciones sobre e1 Trabajo,Universidad de Guanajuato,León 37150,Gto.,Mexico 07.10.2008; The WJG Press and Baishideng
• Subjects: Body Mass Index; Diagnostic Techniques, Digestive System; Esophagus - physiology; Female; Gastrointestinal Transit; Humans; Magnetics; Male; Posture; Rapid Communication; Signal Processing, Computer-Assisted; Supine Position; Young Adult; 生物磁学诊断技术; 经过时间; 解剖结构; Anatomical position; Transit time; Non-invasive; Magnetic marker; Esophagus
• ISSN: 1007-9327; 2219-2840
• DOI: 10.3748/wjg.14.5707

AIM： To study the esophageal transit time （ETT） and compare its mean value among three anatomical inclinations of the body; and to analyze the correlation of ETT to body mass index （BMI）. METHODS： A biomagnetic technique was implemented to perform this study： （1） The transit time of a magnetic marker （MM） through the esophagus was measured using two fluxgate sensors placed over the chest of 14 healthy subjects; （2） the EIF was assessed in three anatomical positions （at upright, fowler, and supine positions; 90°, 45° and 0°, respectively）. RESULTS： ANOVA and Tuckey post-hoc tests demonstrated significant differences between E-IT mean of the different positions. The ETT means were 5.2 ± 1.1 s, 6.1 ± 1.5 s, and 23.6 ± 9.2 s for 90°, 45° and 0°, respectively. Pearson correlation results were r = -0.716 and P 〈 0.001 by subjects＇ anatomical position, and r = -0.024 and P 〉 0.05 according the subject＇s BMI. CONCLUSION： We demonstrated that using this biomagnetic technique, it is possible to measure the ETT and the effects of the anatomical position on the ETT.