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Software for Analysis of Heart Rate and Blood Pressure Time-series Data from the Valsalva Maneuver
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Effect of the Valsalva maneuver on cardiac-coronary interaction assessed by wave intensity analysis

M Rolandi1, Maurice Remmelink, Froukje Nolte

  • 1Department of Biomedical Engineering and Physics at the Academic Medical Center, University of Amsterdam, 1105AZ, The Netherlands. m.c.rolandi@amc.uva.nl

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
|November 25, 2010
PubMed

Insights

The Valsalva maneuver (VM) significantly impacts cardiac-coronary interactions by reducing coronary wave intensity during strain. This maneuver offers insights into cardiovascular responses and left ventricular performance.

Area of Science:

  • Cardiovascular Physiology
  • Human Physiology

Background:

  • The Valsalva maneuver (VM) induces significant cardiovascular changes, making it valuable for studying cardiac-coronary interactions.
  • Simultaneous hemodynamic monitoring is crucial for understanding these complex interactions.

Purpose of the Study:

  • To investigate the cardiac-coronary interaction during the Valsalva maneuver using wave intensity analysis.
  • To correlate coronary wave intensity with left ventricular (LV) performance parameters.

Main Methods:

  • Simultaneous recording of aortic pressure, left ventricular pressure, and intracoronary pressure and flow velocity in 12 patients during VM.
  • Calculation of coronary wave intensity (dI = dP*dU) at characteristic VM phases.
  • Analysis of hemodynamic parameters including LV pressure, end-diastolic pressure, and dP/dt.

Main Results:

  • VM caused transient blood pressure increase followed by a significant decrease and elevated LV end-diastolic pressure.
  • Left ventricular performance showed a 30% reduction in dP/dt during VM.
  • Coronary wave intensity was markedly reduced during VM strain and correlated with diminished LV performance.

Conclusions:

  • Wave intensity analysis effectively reveals the intricate cardiac-coronary interactions during the Valsalva maneuver.
  • The study highlights the dynamic relationship between LV performance and coronary hemodynamics under VM stress.

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