| Title: | Determination of volatile organic compounds in exhaled breath of heart failure patients by needle trap micro-extraction coupled with gas chromatography-tandem mass spectrometry |
| Author(s): | Biagini D; Lomonaco T; Ghimenti S; Bellagambi FG; Onor M; Scali MC; Barletta V; Marzilli M; Salvo P; Trivella MG; Fuoco R; Di Francesco F; |
| Address: | "Department of Chemistry and Industrial Chemistry, University of Pisa, Pisa, Italy" |
| ISSN/ISBN: | 1752-7163 (Electronic) 1752-7155 (Linking) |
| Abstract: | "The analytical performances of needle trap micro-extraction (NTME) coupled with gas chromatography-tandem mass spectrometry were evaluated by analyzing a mixture of twenty-two representative breath volatile organic compounds (VOCs) belonging to different chemical classes (i.e. hydrocarbons, ketones, aldehydes, aromatics and sulfurs). NTME is an emerging technique that guarantees detection limits in the pptv range by pre-concentrating low volumes of sample, and it is particularly suitable for breath analysis. For most VOCs, detection limits between 20 and 500 pptv were obtained by pre-concentrating 25 ml of a humidified standard gas mixture at a flow rate of 15 ml min(-1). For all compounds, inter- and intra-day precisions were always below 15%, confirming the reliability of the method. The procedure was successfully applied to the analysis of exhaled breath samples collected from forty heart failure (HF) patients during their stay in the University Hospital of Pisa. The majority of patients (about 80%) showed a significant decrease of breath acetone levels (a factor of 3 or higher) at discharge compared to admission (acute phase) in correspondence to the improved clinical conditions during hospitalization, thus making this compound eligible as a biomarker of HF exacerbation" |
| Keywords: | "Adult Aged Aged, 80 and over Breath Tests/*instrumentation/*methods Carbon Dioxide/analysis *Exhalation Female Gas Chromatography-Mass Spectrometry/*methods Heart Failure/*diagnosis Humans Limit of Detection Male Middle Aged *Needles Principal Component A;" |
| Notes: | "MedlineBiagini, D Lomonaco, T Ghimenti, S Bellagambi, F G Onor, M Scali, M C Barletta, V Marzilli, M Salvo, P Trivella, M G Fuoco, R Di Francesco, F eng England 2017/10/21 J Breath Res. 2017 Nov 29; 11(4):047110. doi: 10.1088/1752-7163/aa94e7" |
