BIOPAC® Systems, Inc. Logo

196 – Cardiac Output Measurement – EBI100C

Cardiac Output can be determined, noninvasively, by employing electrical bio-impedance measurement techniques. Electrical bio-impedance is simply the characteristic impedance of a volume of tissue and fluid. In the case of Cardiac Output measures, the relevant tissue includes the heart and the immediate surrounding volume of the thorax. The relevant fluid is blood.

The EBI100C is designed to record the parameters associated with CO measurements. The EBI100C incorporates a precision high frequency current source, which injects a very small (100 µA rms or 400 µA rms) current through the measurement tissue volume defined by the placement of a set of current source electrodes. A separate set of monitoring electrodes then measures the voltage developed across the tissue volume. Because the current is constant, the voltage measured is proportional to the characteristics of the biological impedance of the tissue volume.

The EBI100C measures both impedance magnitude and dZ/dt simultaneously. The EBI100C is capable of recording impedances at four different operational frequencies, from 12.5 kHz to 100 kHz. Usually, CO measurements are performed at a measurement frequency of either 50 kHz or 100 kHz.

Associated Applications

Spotlight On
response and stimulus device

Chronos for BIOPAC

The Chronos®  USB-based response and stimulus device features millisecond accuracy in the areas of stimulus, response, sound output, and external device communication—this level of timing accuracy cannot be achieved using a keyboard, mouse, or onboard sound card. Chronos also gives users a solution for communicating with external devices (up to 16 digital inputs and outputs) […]

View All
Latest News

Alan Macy Honored as Local Hero

“Alan Macy: Scientist, Entrepreneur, and Visionary Community Builder” The Santa Barbara Independent honored Alan Macy as a Local Hero. “What makes Macy a Santa Barbara Independent Local Hero is the combination of vision, generosity, and persistence he has shown in bringing creative people together and in crafting innovative venues for them to collaborate. …For this, and for his […]

BIOPAC Releases New BioNomadix Smart Center System

Good quality data is important for reliable physiological research. No longer restrained to wires or stationary devices, BIOPAC’s newly released Smart Center is a lightweight and compact system designed to acquire quality data. The portable, wireless device offers high fidelity physiological data, allowing for subjects to be untethered while being recorded. The system includes the […]

Read All
Request a Demonstration
Request a Demonstration