Transpulmonary thermodilution (TPTD) devices invasively measure not only cardiac output but also several other hemodynamic variables estimating cardiac preload, cardiac preload, systolic function, the lung oedema and systolic function, the lung oedema and the pulmonary permeability.

The greatest advantage of TPTD is to measure extravascular lung water and pulmonary permeability, which may be useful to diagnose acute respiratory distress syndrome (ARDS) and manage fluid therapy in various critical diseases.

TPTD provides several indices that may help in making decisions during the therapeutic management of hemodynamically unstable patients. It should be used for the most critically ill patients, whose management requires a reliable, precise and holistic view of the cardiopulmonary condition.

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