Design, validation, and implementation of a capnogram waveform simulator

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Publication Type thesis
School or College College of Engineering
Department Bioengineering
Author Long, Christina Marie
Title Design, validation, and implementation of a capnogram waveform simulator
Date 2011-12
Description Current testing methods of capnometers do not test for a capnometer's ability to accurately calculate clinical parameters such as respiratory rate (RR) and end-tidal CO2 (ETCO2). Ideal standards should test capnometers with changing flow rates and frequencies of respiration, as well as with capnograms with complex shapes and trends. Simulators have been used in recent years as a solution for standardizing the testing of medical devices and dynamically evaluating their performance. A CO2 waveform simulator was designed that continuously changes the flow rate of CO2 being injected into a constant flow of 02, in order to create varying CO2 partial pressures over time that mimic capnograms. The CO2 flow rate is computer-controlled through a variable orifice solenoid valve that outputs higher flow rates for higher input currents. Once the CO2 in injected into the O2 stream, the mixed gas is diverted to the reference capnometer, which is used to calibrate the CO2 valve and measure the simulator's performance. Clinically recorded capnograms were used to validate the performance of the simulator by measuring how well the simulator reproduced the waveforms.
Type Text
Publisher University of Utah
Subject Anesthesia; Anesthesiology; Capnogram; Capnometer; Simulator
Dissertation Institution University of Utah
Dissertation Name Master of Science
Language eng
Rights Management Copyright © Christina Marie Long 2011
Format Medium application/pdf
Format Extent 15,812,205 bytes
Identifier us-etd3,70020
ARK ark:/87278/s6hq4dkh
Setname ir_etd
Date Created 2012-04-24
Date Modified 2017-10-24
ID 194298
Reference URL https://collections.lib.utah.edu/ark:/87278/s6hq4dkh