CONTINUOUS MEASUREMENT OF CARDIAC OUTPUT AND SVR

摘要

A method and apparatus for continuously monitoring cardiac output and SVR of a patient by analyzing the blood pressure signal. The signal waveform is generated by a transducer (20) and can be measured directly by the use of catheters placed into various arteries, in particular a radial artery or a femoral artery, or non-invasive methods such as electrooptic methods, or methods using a piezoelectric transducer. Transducer (20) is connected to an A/D converter (30) which is in turn connected a low pass filter (40). The output of low pass filter (40) is connected to waveform analyzer (50). A calculator (60) receives inputs from waveform analyzer (50) and an input device (10). Various parameters are extracted from the blood pressure signal waveform in order to calculate the cardiac output of the patient and other hemodynamic data.