Computer analysis of cardiovascular parameters

Howard J. Mass, J. T. Gean, Patricia A. Gwirtz

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


A computer program is described for the analysis of several cardiovascular parameters frequently measured or derived in the chronically instrumented dog model. Data are stored on magnetic tape and are subsequently analyzed with the Apple IIe microcomputer equipped with the ADALAB (Interactive Microware, Inc.) analog-to-digital convertor. Not limited to the chronically instrumented animal model, the program is capable of analyzing left ventricular pressure, three channels of regional myocardial segment length, coronary flow velocity as measured by the Doppler ultrasonic flow technique, and two channels of systemic arterial pressure. Derived data include: left ventricular dP dtmax, left ventricular pressure-heart rate product, left ventricular ejection time, tension time index; percent segment length shortening and velocity of shortening, dL dt(s)max, regional stroke work and power, duration of systole and diastole; mean coronary flow velocity, peak diastolic and systolic flow velocity, and true mean systemic arterial pressure.

Original languageEnglish
Pages (from-to)75-84
Number of pages10
JournalComputers in Biology and Medicine
Issue number2
StatePublished - 1987


  • 6502 Assembly language
  • Beat-to-beat analysis
  • Chronic instrumentation
  • Doppler flow
  • Left Ventricular Pressure
  • Regional segment length
  • UCSD Pascal


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