Non-Invasive Measurements of Changes in Pulmonary Artery Pressure in Intensive Care Unit Patients Using Electrical Impedance Tomography - A Feasibility Study

Inclusion criteria: * Age ≥ 18-year-old. * Intubated patients in the ICU with clinical decision to monitor PAP and cardiac output using a PAC. Exclusion criteria: * Patients with implanted or external thoracic electronic devices (e.g., pacemaker) or thoracic metal implants. * Known pregnancy or lactating patients. * Open lung injuries or pneumothorax. * Open wounds, drainages, burns or rashes of the upper thorax. * Estimated thoracic perimeter smaller than 66 cm or larger than 134 cm. * Known allergies to wound dressings or adhesives (e.g., gel electrodes)