NON-INVASIVE ULTRASONIC PULSE DOPPLER CARDIAC OUTPUT MONITOR

摘要

A cardiac output measurement device (20) for real-time, non-invasive measurement of cardiac output. The system utilizes a pulsed Doppler ultrasound transducer probe (31), an interactive visual display (24), a volume control knob (25), a finger operated keypad (22), a paper advance button (27) located on the forwardly printer drawer panel (26) enabling the operator to advance the paper (28). The probe wire (29) includes an activation switch (30). The device automatically searches the ascending aorta at various depths to find the depth at which the greatest blood velocity reading is detected. The device calculates cardiac velocity, cardiac index, stroke distance, heart rate, and stroke volume.