[Monitoring of the pulmonary artery pressure after open heart surgery (author's transl)].

A monitoring technic of recording the pulmonary artery pressure and cardiac output after cardiac surgery (valvular prothesis or aortocoronary bypass) is described. This monitoring is realised by introduction of catheter into pulmonary infundibulum during surgery, emerging through a cutaneous incision. This method was applied to 60 patients with two accidents at the beginning of the procedure. The technic's indications and cares are discussed.