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

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

To assess whether changes in electrical impedance - measured using an electrical impedance tomography (EIT) chest belt - can be used to derive changes in pulmonary artery pressure (PAP) in critically ill patients when compared to invasive gold-standard PAP measured using pulmonary artery catheter (PAC).

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)