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  • Mass spectrometry  (1)
  • solid (gel) phase
  • Chemistry
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    Electronic Resource
    Electronic Resource
    Springer
    Medical & biological engineering & computing 20 (1982), S. 375-382 
    ISSN: 1741-0444
    Keywords: Blood-gas transducers ; Foetal scalp ; Mass spectrometry ; Transducers
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Notes: Abstract A number of authors have described the design of transducers to be used with mass spectrometers for the skin-surface measurement of gases in newborn infants and adults. We have also previously considered the feasibility of designing a transducer for attachment to the foetal scalp during labour. This paper describes the problems which have been encountered in producing a practical transducer design for foetal scalp use. The major problem has been that of achieving adequate signal-to-noise ratio for the low oxygen levels encountered in the human foetus. A mathematical model is described, and results of the use of the model in optimising critical transducer design parameters are presented. Typical recordings obtained during labour are shown for O2, CO2 and N2O.
    Type of Medium: Electronic Resource
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