Applications of breath gas analysis in medicine

Autor:	Sergei Mechtcheriakov, Maximilian Ledochowski, Anton Amann, Alex Schmid, Stefan Telser, Guy Poupart
Rok vydání:	2004
Předmět:	Breath test Sleep Stages Chromatography medicine.diagnostic_test Breath gas analysis Chemistry Environmental chemistry medicine Physical and Theoretical Chemistry Condensed Matter Physics Mass spectrometry Instrumentation Spectroscopy
Zdroj:	International Journal of Mass Spectrometry. 239:227-233
ISSN:	1387-3806
DOI:	10.1016/j.ijms.2004.08.010
Popis:	Volatile organic compounds (VOCs) in exhaled breath gas provide valuable information about the subjects’ physiological and pathophysiological condition. Proton-transfer-reaction mass spectrometry (PTR-MS) allows rapid and online measurements of these substances. We present results of three studies illustrating the potential of breath gas analysis by PTR-MS in various contexts: long-time online monitoring of VOCs in sleeping subjects suggests that VOC profiles are related to sleep stages. Analysis of VOC concentrations in the breath of carbohydrate malabsorbers emphasizes the role played by bacteria in the gut. Finally, we demonstrate the large intra- and intersubject concentration variability of VOCs by considering one particular mass.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a786091b3199726c0d017ce1cc01eb9e https://doi.org/10.1016/j.ijms.2004.08.010 Zobrazit plný text záznamu Full Text from ScienceDirect