Journal of the American Society of Echocardiography
Volume 9, Issue 2 , Pages 129-134, March 1996

The influence of atrioventricular conduction and heart rate on the pulmonary venous flow pattern

  • Torkel Steen, MD, PhD

      Affiliations

    • From Medical Department B, Rikshospitalet, University of Oslo, Oslo, Norway
    • the Medical Department, Baerum Hospital, Baerum, Norway
    • Corresponding Author InformationReprint requests: Torkel Steen, MD, PhD, Medical Department, Baerum Hospital, N-1355 Baerum, Norway.
    • Recipient of a fellowship from the Norwegian Council on Cardiovascular Diseases, Oslo, Norway.
    • ,
  • Erik Kongsgaard, MD

      Affiliations

    • From Medical Department B, Rikshospitalet, University of Oslo, Oslo, Norway
    • the Medical Department, Baerum Hospital, Baerum, Norway
    • Recipient of a fellowship from the University of Oslo.
    • ,
  • Einar Søyland, MD

      Affiliations

    • From Medical Department B, Rikshospitalet, University of Oslo, Oslo, Norway
    • the Medical Department, Baerum Hospital, Baerum, Norway
    • ,
  • Halfdan Ihlen, MD, PhD

      Affiliations

    • From Medical Department B, Rikshospitalet, University of Oslo, Oslo, Norway
    • the Medical Department, Baerum Hospital, Baerum, Norway

Abstract 

The pulmonary venous flow (PVQ) pattern usually has two antegrade flow waves, corresponding to ventricular systole and diastole, respectively, and is used to assess left atrial pressure. To study the effects of atrioventricular conduction (AVD) and heart rate (HR) on the PVQ pattern, transthoracic pulsed Doppler recordings of pulmonary venous, transmitral, and aortic flow were made in five healthy subjects with dual-chamber pacemakers. Recordings were made at HRs of 80, 100, and 120 beats/min, with AVDs of 75, 150, and 220 msec at each HR. When the AVD was increased, the biphasic PVQ changed to a monophasic pattern in which a single flow wave covered the transition between ventricular diastole and systole. There was a shift of flow from ventricular systole to diastole. When HR was increased, the systolic fraction of the PVQ increased as a result of an increase in the relative duration of systole. In conclusion, AVD and HR influenced the PVQ pattern in subjects without signs of ventricular dysfunction. This may be a limitation to the use of the flow pattern to assess left atrial pressure.

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PII: S0894-7317(96)90020-6

Journal of the American Society of Echocardiography
Volume 9, Issue 2 , Pages 129-134, March 1996

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