Studies on gas tension in the normal middle ear. Gas chromatographic analysis and a new sampling technique.

@article{Grntved1990StudiesOG,
  title={Studies on gas tension in the normal middle ear. Gas chromatographic analysis and a new sampling technique.},
  author={A Gr{\o}ntved and A M{\o}ller and Leif Albert J{\o}rgensen},
  journal={Acta oto-laryngologica},
  year={1990},
  volume={109 3-4},
  pages={
          271-7
        }
}
In studying mechanisms regulating the middle ear pressure it is essential to know the gas compositions of the middle ear. We have constructed a device which made it possible to sample middle ear gas without creating a negative pressure, thus eliminating the risk of admixture of atmospheric air. The samples were analysed by gas chromatography. In 26 normal subjects we found relatively stable values of carbon dioxide (median 52 mmHg, range 31-69 mmHg) and nitrogen (median 605 mmHg, range 563-627… CONTINUE READING

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