title: Heat dissipation by blood circulation and airway tissue heat absorption in a canine model of inhalational thermal injury.
abstract: OBJECTIVE
  This study aimed to further explore heat dissipation by blood circulation and airway tissue heat absorption in an inhalational thermal injury model.
  
  
  METHODS
  Twelve adult male Beagle dogs were divided into four groups to inhale heated air for 10min: the control group, group I (100.5°C), group II (161.5°C), and group III (218°C). The relative humidity and temperature of the inhaled heated air were measured in the heating tube and trachea, as were blood temperatures and flow velocities in both common jugular veins. Formulas were used to calculate the total heat quantity reduction of the heated air, heat dissipation by the blood, and airway tissue heat absorption.
  
  
  RESULTS
  The blood temperatures of both the common jugular veins increased by 0.29°C±0.07°C to 2.96°C±0.24°C and the mean blood flow volume after injury induction was about 1.30-1.74 times greater than before injury induction. The proportions of heat dissipated by the blood and airway tissue heat absorption were 68.92%±14.88% and 31.13%±14.87%, respectively.
  
  
  CONCLUSIONS
  The heat dissipating ability of the blood circulation was demonstrated and improved upon along with tissue heat absorption owing to increased regional blood flow.
authors.affiliation: Department of Burns Surgery, Peking University Fourth School of Clinical Medicine, No. 31, Xinjiekou East Street, Xicheng District, Beijing 100035, PR China.
authors.forename: Jiangbo
authors.initials: J
authors.lastname: Wan
authors.affiliation: Department of Burns Surgery, Peking University Fourth School of Clinical Medicine, No. 31, Xinjiekou East Street, Xicheng District, Beijing 100035, PR China. Electronic address: daoshizga@163.com.
authors.forename: Guoan
authors.initials: G
authors.lastname: Zhang
authors.affiliation: Department of Burns Surgery, Peking University Fourth School of Clinical Medicine, No. 31, Xinjiekou East Street, Xicheng District, Beijing 100035, PR China.
authors.forename: Yuxuan
authors.initials: Y
authors.lastname: Qiu
authors.affiliation: Department of Burns Surgery, Peking University Fourth School of Clinical Medicine, No. 31, Xinjiekou East Street, Xicheng District, Beijing 100035, PR China.
authors.forename: Chunquan
authors.initials: C
authors.lastname: Wen
authors.affiliation: Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua University, No. 1, Tsinghua Park, Haidian District, Beijing 100084, PR China.
authors.forename: Tairan
authors.initials: T
authors.lastname: Fu
mesh_terms: D000818:Animals; D001775:Blood Circulation; D001833:Body Temperature Regulation; D002059:Burns, Inhalation; D004195:Disease Models, Animal; D004285:Dogs; D006358:Hot Temperature; D007601:Jugular Veins; D008297:Male; D012039:Regional Blood Flow; D056152:Respiratory Rate; D014132:Trachea
keywords: Airway; Blood flow; Canine model; Heat absorption; Heat dissipation; Inhalation injury