BCG Biosensor and Non- and Invasive Monitoring During Emergency Medicine Cases, a Prospective Feasibility Study

In a out of hospital emergency medicine study the investigators will measure hemodynamic effects of implemented treatments for patients with cardiac arrest, hypotension, and intensive care transports. The investigators will use both non-invasive and invasive measuring technology to measure this. Ballistocardiographic biosensors are introduced together with more advanced non-invasive and invasive measurements such as invasive arterial blood pressure with cardiac output calculation and saturation cerebral tissue oxygenation (SctO2). During treatment of cardiac arrest patients the investigators will use a new LUCAS 2 Active Decompression device (LUCAS 2 AD2) and measure different hemodynamic variables.