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A computer system for analysis and transmission of spirometry waveforms using volume sampling.

D V Ostler·R M Gardner·R O Crapo
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Abstract

A microprocessor-controlled data gathering system for telemetry and analysis of spirometry waveforms was implemented using a completely digital design. Spirometry waveforms were obtained from an optical shaft encoder attached to a rolling seal spirometer. Time intervals between 10-ml volume changes (volume sampling) were stored. The digital design eliminated problems of analog signal sampling. The system measured flows up to 12 liters/sec with 5% accuracy and volumes up to 10 liters with 1% accuracy. Transmission of 10 waveforms took about 3 min. Error detection assured that no data were lost or distorted during transmission. A pulmonary physician at the central hospital reviewed the volume-time and flow-volume waveforms and interpretations generated by the central computer before forwarding the results and consulting with the rural physician. This system is suitable for use in a major hospital, rural hospital, or small clinic because of the system's simplicity and small size.

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ComputersHumansMethodsMicrocomputersSpirometryTelemetryJournal Article

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D V Ostler, R M Gardner, R O Crapo. 1984. A computer system for analysis and transmission of spirometry waveforms using volume sampling.. https://doi.org/10.1016/s0010-4809(84)80014-2

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