Comparison of two closed systems for thermodilution cardiac outputs.

  title={Comparison of two closed systems for thermodilution cardiac outputs.},
  author={John R. Plachetka and Douglas F. Larson and Neal W. Salomon and Jack G. Copeland},
  journal={Critical care medicine},
  volume={9 6},
The authors used an in vitro flow system to evaluate the sources of error in a previously described closed system thermodilution method for cardiac output determinations. Cardiac outputs were overestimated by as much as 49% because the injectate warmed as it was drawn through the connecting tubing. Submerging the tubing in the ice bath prevented this problem. The authors also evaluated a new closed system thermodilution cardiac output method. The method employed a bypass line and a spring… CONTINUE READING