Calibration of time derivatives of forced vital capacity by explosive decompression.

@article{Petusevsky1980CalibrationOT,
  title={Calibration of time derivatives of forced vital capacity by explosive decompression.},
  author={M L Petusevsky and L. Lyons and Alfred A. Smith and Gary R Epler and E A Gaensler},
  journal={The American review of respiratory disease},
  year={1980},
  volume={121 2},
  pages={343-50}
}
A simple, portable, inexpensive device is described that simulates expiratory flow curves for calibration of spirometers. A 4-L metal cylinder filled with copper mesh is fitted with a precision manometer. The pressure is increased to twice atmospheric and released by explosive decompression through 4 easily interchangeable resistors. The ratio of forced expiratory volume in one second to forced vital capacity ranged from 0.80 to 0.25, thus encompassing the range from normal to severe… CONTINUE READING

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