caa a22 4500 465826067 CHVBK 20180323112149.0 cr unu---uuuuu 170327e19900401xx s 000 0 eng 10.1007/BF02828283 doi (NATIONALLICENCE)springer-10.1007/BF02828283 Passive warming of airway gases (artificial nose) improves accuracy of esophageal temperature monitoring [Elektronische Daten] [Marc Siegel, Nikolaus Gravenstein] The most efficient site for monitoring heart and lung sounds by esophageal stethoscope is not the warmest segment of the esophagus. This study investigated the ability of passive warming of airway gases to increase the accuracy of temperatures measured at this site (i.e., to decrease their difference from core temperature). In 15 adult patients undergoing general anesthesia and endotrachcal intubation, esophageal temperatures were measured before and after use of a heat and moisture exchanger (an artificial nose) that passively warmed inspired gases. The resulting values were compared with nasopharyngeal temperatures, which represented core temperature. Before use of the heat and moisture exchanger, esophageal and nasopharyngeal temperatures differed significantly (mean difference ± SD, 0.9 ± 0.4‡C;P ≤ 0.001). After passive warming of inspired gases, esophageal temperatures increased significantly (mean increase ± SD, 0.5 ± 0.2‡C;P ≤ 0.001) but inconsistently (range, 0.1 to 1.2‡C). However, the mean difference between esophageal and nasopharyngeal temperatures was still significant (0.5 ± 0.3‡C;P < 0.001). Discrepancies between esophageal and core temperatures persist when a currently available esophageal stethoscope with adjacent auscultation chamber and temperature probe is used, despite passive warming of airway gases. Little, Brown and Company, 1990 Equipment: stethoscope, humidifiers nationallicence Monitoring: temperature nationallicence Temperature: heating nationallicence Siegel Marc Departments of Anesthesiology and Neurosurgery, University of Florida College of Medicine, J. Hillis Miller Health Center, Box J-254, 32610-0254, Gainesville, FL aut Gravenstein Nikolaus Departments of Anesthesiology and Neurosurgery, University of Florida College of Medicine, J. Hillis Miller Health Center, Box J-254, 32610-0254, Gainesville, FL aut Journal of Clinical Monitoring Springer Netherlands 6/2(1990-04-01), 89-92 0748-1977 6:2<89 1990 6 10877 https://doi.org/10.1007/BF02828283 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02828283 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Siegel Marc Departments of Anesthesiology and Neurosurgery, University of Florida College of Medicine, J. Hillis Miller Health Center, Box J-254, 32610-0254, Gainesville, FL aut NATIONALLICENCE 700 1- Gravenstein Nikolaus Departments of Anesthesiology and Neurosurgery, University of Florida College of Medicine, J. Hillis Miller Health Center, Box J-254, 32610-0254, Gainesville, FL aut NATIONALLICENCE 773 0- Journal of Clinical Monitoring Springer Netherlands 6/2(1990-04-01), 89-92 0748-1977 6:2<89 1990 6 10877 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer