Transcutaneous continuous wave doppler cardiac output monitoring is feasible producing reliable and reproducible signals

Clinical evaluation of USCOM ultrasonic cardiac output monitor in cardiac surgical patients in intensive care unit

“…13 The USCOM device has addressed both these issues. Using the USCOM transducer, Phillips 14 demonstrated 100% detection of flow signals in spontaneously breathing adult and paediatric patients. Our study has shown that the flow detection rate in patients whose lungs are mechanically ventilated was 91.7% (22 out of 24 patients).…”

Stroke Volume Monitoring: Novel Continuous Wave Doppler Parameters, Algorithms and Advanced Noninvasive Haemodynamic Concepts

“…Doppler ultrasound as used in echocardiography is a reliable method for measuring flow volumes, providing validated direct transvalvular measurement of SV and CO [ 36 , 46 , 47 , 48 ••, 49 – 54 ]. The ultrasonic cardiac output monitor (USCOM 1A, Uscom Ltd., Sydney, Australia) is a specialised Doppler SV monitor derived from echocardiography, which has similarly been validated for CO ranging from 0.12 to 18.3 L/min [ 55 – 56 ]. These non-invasive flow measurements can be integrated with BP measures to generate integrated flow-pressure parameters and monitor changes predicted by pressure-volume loops.…”

“…The USCOM 1A (Uscom Ltd., Sydney, Australia) is a direct CW Doppler SV monitor which can access either the aortic valve from the suprasternal notch, or the pulmonary valve from the parasternal access window [ 26 , 55 , 56 , 93 ]. The device is simple to learn and use, requiring the trainee to perform about 30 studies to achieve competance.…”