期刊
CURRENT OPINION IN PULMONARY MEDICINE
卷 18, 期 3, 页码 228-232出版社
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/MCP.0b013e328351f98b
关键词
breath analysis; fungi; Pseudomonas aeruginosa; respiratory tract infection; tuberculosis
资金
- New Zealand Health Research Council
- Cure Kids New Zealand
- Lotteries Health
- Lottery Health Research
- New Zealand Ministry of Science and Innovation (MSI) Technology
Purpose of review Breath testing has developed over the last 20 years. New techniques that can identify fingerprints for specific diseases and specific markers of respiratory pathogens have been applied to breath analysis. This review discusses the recent advances in breath analysis for the diagnosis of bacterial and fungal lower respiratory tract infections. Recent findings The current techniques continue to develop rapidly, but preconcentration techniques are needed to analyse many target volatile organic compounds for most systems. Breath testing with an electronic nose is promising for the diagnosis of tuberculosis (TB), and specific volatiles identifiable by gas chromatography with mass spectrometry have been identified in breath for Mycobacterium tuberculosis, Pseudomonas aeruginosa and Aspergillus fumigatus, but are found at very low concentrations in breath. Contamination from the environment is an ongoing confounding influence. Exhaled breath condensate (EBC) is disappointing as a diagnostic sample. Summary Careful attention needs to be paid to the sensitivity and specificity of a technique and confounding from the environment. The role of technologies such as selected ion flow tube-mass spectrometry is emerging. The electronic nose requires further validation for TB. The identification of specific microbial biomarkers aids the quest for improved accuracy. EBC is currently of limited value.
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