Title :
Quadrupole mass spectrometer for multiple gas expirograms
Author :
Neufeld, Gordon R. ; Schwardt, Jeffrey B.
Author_Institution :
Philadelphia VA Med. Center, PA, USA
Abstract :
Hardware and software have been developed to sample and analyze multiple expired gases. A computer-controlled spectrometer system was designed, using commercially available components, to obtain continuous breath-by-breath expirograms of CO/sub 2/ and other evolved gases between 0 and 300 atomic mass units. The unique feature of the system is its ability to monitor a single gas along with respiratory flow signals in real time, while storing sampled gas in a long capillary line. Subsequent offline analysis of the stored capillary gas can then be time-aligned to the original flow data for multiple gas expirograms.<>
Keywords :
biomedical equipment; computerised instrumentation; mass spectrometers; pneumodynamics; CO/sub 2/; computer-controlled spectrometer system; continuous breath-by-breath expirograms; hardware; multiple gas expirograms; offline analysis; quadrupole mass spectrometer; respiratory flow signals; software; stored capillary gas;
Conference_Titel :
Engineering in Medicine and Biology Society, 1988. Proceedings of the Annual International Conference of the IEEE
Conference_Location :
New Orleans, LA, USA
Print_ISBN :
0-7803-0785-2
DOI :
10.1109/IEMBS.1988.95101
