Title :
Measurements of pressure between laryngoscope blade and upper airway tract during orotracheal intubation
Author :
Hashimoto, S. ; Manabe, S. ; Kaku, S. ; Wang, T. ; Tanaka, R.
Author_Institution :
Dept. of Electron. Eng., Osaka Inst. of Technol., Japan
Abstract :
Pressure generated between the laryngoscope blade and the upper respiratory tract tissue during orotracheal intubation was measured with a chromo-film. Orotracheal intubation was performed in 20 cases with Wis-Foregger or with MacIntosh laryngoscope, on which the chromo-films were attached. Pressure applied on the blade was determined by colorimetric assessment of the film. The results show that the pressures were 1.2±0.6 MPa on the base of the epiglottis, 0.8±0.4 MPa on the surface of the tongue, and 0.11±0.03 GPa on the edge of the upper incisor and that the mucous membranes of the base of the epiglottis were traumatized by the pressure of >1.6 MPa
Keywords :
biomechanics; biomedical equipment; biomedical measurement; pressure measurement; MacIntosh laryngoscope; Wis-Foregger; chromo-film; colorimetric assessment; epiglottis base; laryngoscope blade; mucous membranes; orotracheal intubation; tongue surface; upper airway tract; upper incisor; Anesthesia; Biomembranes; Blades; Injuries; Lesions; Pressure measurement; Protection; Teeth; Tongue; Welding;
Conference_Titel :
[Engineering in Medicine and Biology, 1999. 21st Annual Conference and the 1999 Annual Fall Meetring of the Biomedical Engineering Society] BMES/EMBS Conference, 1999. Proceedings of the First Joint
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-5674-8
DOI :
10.1109/IEMBS.1999.802407
