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Is the Exhaled Breath Temperature Sensitive to Cigarette Smoking?
Giovanna E Carpagnano1, Cinzia Ruggieri1, Giulia Scioscia1
1a Institute of Respiratory Disease, Department of Medical and Surgical Sciences, University of Foggia , Italy.
Exhaled breath temperature (EBT) is higher in smokers and acutely increases after smoking. EBT decreases over time after smoking cessation, indicating its sensitivity to smoking effects.
Area of Science:
- Respiratory Medicine
- Biomarkers
- Pulmonology
Background:
- Smoking causes inflammation and increases risk for Chronic Obstructive Pulmonary Disease (COPD).
- Non-invasive inflammatory markers are needed for monitoring smokers.
- Exhaled breath temperature (EBT) is a potential marker, but its relation to smoking is unstudied.
Purpose of the Study:
- To investigate exhaled breath temperature (EBT) in smokers.
- To analyze the acute effects of cigarette smoking on EBT.
- To monitor EBT changes following smoking cessation.
Main Methods:
- Longitudinal study comparing 25 smokers and 25 non-smokers.
- Measured EBT in smokers before smoking, 5 minutes after, and 2 hours after.
- Monitored EBT at 1 week and 3 months post-smoking cessation.
Main Results:
- Smokers had significantly higher EBT than non-smokers at baseline.
- EBT increased immediately after smoking a cigarette.
- EBT gradually decreased over time after smoking cessation.
Conclusions:
- Exhaled breath temperature (EBT) is elevated in smokers.
- EBT is sensitive to the acute effects of cigarette smoking.
- EBT may serve as a non-invasive marker for smoking status and cessation progress.
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