New Insights into Cardiovascular Monitoring: Continuous Arterial Thermodilution and Intrathoracic Blood Volume

  • A. Perel
  • H. Berkenstadt
  • E. Segal
Conference paper


The measurement of cardiac output (CO) is often done when the patient is in need of advanced haemodynamic monitoring. The current method for measurement of cardiac output is by thermodilution and necessitates the insertion of a pulmonary artery catheter (PAC), a procedure which is associated with a number of known complications, including a possible increase in mortality in critically ill patients. In addition, the CO that is derived from the PAC is influenced by the significant respiratory variations, and hence from the phase of the mechanical breath in which the injection is made. Mechanical ventilation was also shown to cause a high incidence of significant tricuspid insufficiency and mild to severe vena caval backward flow, which, like other valvular regurgitations, may reduce the accuracy of CO measured by PAC thermodilution (TD) [1].


Mean Transit Time Stroke Volume Variation Extravascular Lung Water Cardiac Preload Pulmonary Blood Volume 
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Copyright information

© Springer-Verlag Italia 1999

Authors and Affiliations

  • A. Perel
    • 1
  • H. Berkenstadt
    • 1
  • E. Segal
    • 1
  1. 1.Dept. of Anaesthesia and Intensive Care Medicine, Sackler School of MedicineTel Aviv University, Sheba Medical CentreTel HashomerIsrael

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