Masimo LiDCO - Chapter 1: Technology Overview; Theory of Operation

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Chapter 1: Technology Overview
Theory of Operation
Masimo LiDCO is a multiparameter hemodynamic monitoring device specifically designed for use in
operating room and intensive care units. The beat-to-beat parameters provided by Masimo LiDCO allow
clinicians to get immediate feedback on a patient’s fluid and hemodynamic status. The LiDCO algorithm
derives stroke volume and heart rate from the patient’s existing arterial pressure waveform.
Body Surface Area (BSA) is obtained from manual input of the patient's height and weight. In addition to
Stroke Volume (SV) and Heart Rate (HR), the LiDCO algorithm derives Mean Arterial Pressure (MAP),
Systolic (Sys) and Diastolic (Dia) arterial pressure. Utilizing the previous values, Masimo LiDCO
calculates Heart Rate Variation(HRV), Cardiac Output (CO) and Cardiac Index (Ci), Systemic Vascular
Resistance (SVR) and Systemic Vascular Resistance Index (SVRi), Stroke Volume Variation (SVV) and
Stroke Volume Index (SVi), Pulse Pressure Variation (PPV), Oxygen Delivery (DO
2
) Oxygen Delivery
Index (DO
2
i), Oxygen Consumption (VO
2
) and Oxygen Consumption Index (VO
2
i).