Ventinova Medical BV

The goal of this clinical trial is to study the effects of Flow Controlled Ventilation (FCV) following conventional mechanical ventilation (Pressure or Volume Controlled Ventilation) in postcardiac surgery ICU-patients to allow for future power calculations and to obtain experience with FCV.
The main questions it aims to answer are:
* What is the effect of FCV on the lung volume measured by Electrical Impedance Tomography (EIT)?
* What is the effect of FCV on the minute volume?
* What is the effect of FCV on the mechanical power and dissipated energy?
Participants will be ventilated with PCV at baseline and then switched to FCV for 90 minutes while the lung volume, minute volume and mechanical power and dissipated energy levels are measured.