Advertisement

Spectral Analysis of Pulmonary Artery Pressure

  • Richard K. Brienzo
  • John E. Brimm
  • Richard M. Peters

Abstract

The pulmonary artery pressure (PAP), a signal widely monitored since the advent of the Swan-Ganz flow-directed catheter,1 is the result of two independent components, the higher frequency hemodynamic component resulting from the ejection of blood from the right ventricle into the pulmonary capillary bed and the smaller amplitude, lower frequency respiratory component due to changes in intrathoracic pressure. Figure 1 demonstrates these two effects; the dominant variation is due to the heart, but mechanical ventilation superimposes a lower frequency wave. Every time a breath is delivered, the PAP changes in phase with the transpulmonary pressure.

Keywords

Pulmonary Artery Pressure Pulmonary Capillary Wedge Pressure Notch Filter Intrathoracic Pressure Lower Frequency Wave 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    H.J. C. Swan, W. Ganz, and J. Forrester et al, Cardiac catheterization with a flow directed, balloon tipped catheter. N. Engl. J. Med. 283: 447, 1970.CrossRefGoogle Scholar
  2. 2.
    A.G. Maran, Variables in pulmonary wedge pressure, variation with intrathoracic pressure, graphic and digital recorders, Crit. Care Med. 8: 102, 1980.CrossRefGoogle Scholar
  3. 3.
    R.E. Berryhill, J.L. Menumof, L.A. Rauscher, Pulmonary vascular pressure reading at the end of exhalation, Anesthesiology 49: 365, 1978.CrossRefGoogle Scholar
  4. 4.
    A.P. Sherman, J.P.M. Gieles, A pulmonary artery blood pressure analysis algorithm, ACEMB, p. 250, Nov. 1977.Google Scholar
  5. 5.
    P.F. Meagher, R.E. Jensen, M.H. Weil, H. Shubin, Measurement of respiration rate from central venous pressure in the critically ill patient, IEEE Trans. Biomed. Eng. BME-13: 5457, 1966.Google Scholar
  6. 6.
    F.J. Lewis, Monitoring of patients in intensive care units, Surg. Clin. North America, 51: 15, 1971.Google Scholar
  7. 7.
    P.T. Walling, T.M. Savege, A Comparison of esophageal and central venous pressures in the measurement of transpulmonary pressure change, Br. J. Anaesth 48: 475, 1976.CrossRefGoogle Scholar
  8. 8.
    Programs for Digital Signal Processing, edited by Digital Signal Processing Committee, New York, IEEE Press, 1979.Google Scholar
  9. 9.
    B. Widrow, J.R. Glover, Jr., J.M. McCool et al, Adaptive noise cancelling, Principles and applications, Proc. IEEE 63: 1692, 1975.Google Scholar

Copyright information

© Plenum Press, New York 1983

Authors and Affiliations

  • Richard K. Brienzo
    • 1
  • John E. Brimm
    • 1
  • Richard M. Peters
    • 1
  1. 1.Department of SurgeryUniversity HospitalSan DiegoUSA

Personalised recommendations