Lungs: A program for real-time or retrospective on-line analysis of certain physical properties of the human lungs
✍ Scribed by Michael Connelly
- Publisher
- Elsevier Science
- Year
- 1971
- Weight
- 735 KB
- Volume
- 1
- Category
- Article
- ISSN
- 0010-468X
No coin nor oath required. For personal study only.
✦ Synopsis
This paper describes a program which is used in clinical resptrology to analyse the mechanical fmlctions of the lungs of human subjects. It is controlled by conversati,.,nal use of a remote tdletypewriter in the rcspirologist's laboratory where flow and pressure source data are input ei.:her from rite subject himself or from analog tape. Graphical and printed results are produced in the laboratory on a storage oscilloscope screen and on the teletypewriter. Graphical results include various curves of volume/pressure, flow/pressure and compliance/frequency. Twenty-six numeric results are printed and include various of elastic and viscous work, peak flow, limiting press~Jres, phase ~,/,les and time constants, various volumes, resistances and frequeacies.
The program is highly modularized and minimizes core usage by overlaying during execution. It is designed to tun concurrently with other on-line and batch programs.
Lung mechanics
Overlaying Remote processing
I. Compu~tional methods
1.1. The program is designed to facilitate the acquisition of flow and pressure readings directly from the lungs of a live human subject or a recording of the same on analogue tape. The flow and pressure data are transmitted to and digitized at the computer about 350 meters from the experimenter's laboratory. The acquired data are analyzed and yield results both in graphical and printed form, The graphical results are displayed on a storage oscilloscope which is situated in the investigator's laboratory. Printed results are transmitted to a teletypewriter also in the laboratory. Through conversational interaction via the teletypewriter, control of the program is, to a large extent, in the hands of the investigator. This allows him considerable flexibi!:ty in tl,e way he conducts an investigation.
The output of results is much faster than was pos-