title: Slower rise of exhaled breath temperature in cystic fibrosis.
abstract: OBJECTIVE
  To measure exhaled breath temperature in patients with cystic fibrosis.
  
  
  METHODS
  17 patients (6-18 years) with cystic fibrosis and 15 age- and gender-matched healthy controls were recruited in this cross sectional study. Exhaled breath temperature was measured in subjects recruited in both the groups with a device X-halo and analyzed as plateau temperature achieved and rate of temperature rise.
  
  
  RESULTS
  Patients with cystic fibrosis showed no significant difference in plateau temperature [34.4(32.3-34.6) versus 33.9 (33.0-34.4)oC; P=0.35] while mean (SEM.) rate of temperature rise was significantly less in patients [0.09 (0.01) versus 0.14 (0.02) ∆ºC/s ; P=0.04] as compared to controls.
  
  
  CONCLUSIONS
  There was a slower rise of exhaled breath temperature in patients with cystic fibrosis whereas plateau temperature was not significantly different from controls.
authors.affiliation: Departments of Physiology and *Pediatrics, All India Institute of Medical Sciences, New Delhi, India. Correspondence to: Dr Anjana Talwar, Department of Physiology, All India Institute of Medical Sciences, New Delhi, India. anjanatalwar@gmail.com.
authors.forename: Geetanjali
authors.initials: G
authors.lastname: Bade
authors.forename: Sumita
authors.initials: S
authors.lastname: Gupta
authors.forename: Sushil Kumar
authors.initials: SK
authors.lastname: Kabra
authors.forename: Anjana
authors.initials: A
authors.lastname: Talwar
mesh_terms: D000293:Adolescent; D015415:Biomarkers; D001831:Body Temperature / Q000502:physiology*; D016022:Case-Control Studies; D002648:Child; D003550:Cystic Fibrosis / Q000453:epidemiology / Q000503:physiopathology*; D045853:Exhalation / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D011014:Pneumonia / Q000503:physiopathology
chemical_list: D015415:Biomarkers