Capnograph Monitoring
Capnograph Monitoring - Related Videos
07:51
Evaluation of Capnography Sampling Line Compatibility and Accuracy when Used with a Portable Capnography Monitor
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Cited by 3 •
2020
The goal of this study was to evaluate the accuracy of capnography sampling lines used in conjunction with a portable bedside capnography monitor. Sampling lines from 7 manufacturers were evaluated for tensile strength, rise time, and ETCO2 accuracy as a function of respiratory rate or supplemental oxygen flow rate.
03:24
Multisystem Monitoring of Epileptic Abnormalities in Rabbit: A Method for Simultaneous Video EEG, ECG, Capnography, and Oximetry Recording During Induced Seizures
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2025
In this video, we demonstrate a multisystem monitoring method to evaluate neurological and cardiorespiratory abnormalities during intravenous injection of a seizure-inducing drug. The simultaneous monitoring of video EEG, ECG, oximetry, and capnography parameters helps to understand the real-time physiological changes associated with epileptic seizures.
04:27
Prepping Conscious Rabbit Model for Simultaneous Video-EEG-ECG-Oximetry-Capnography for Experimental Interventions: A Procedure to Implant EEE-ECG Electrodes and Attach Respiratory Probes in Rabbit Model
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2025
This video demonstrates the procedure to implant EEG-ECG electrodes and attach respiratory probes in a rabbit model for acquiring and analyzing records of its bio signals.
08:25
Combining Volumetric Capnography And Barometric Plethysmography To Measure The Lung Structure-function Relationship
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Cited by 1 •
2019
Here, we describe two measures of pulmonary function – barometric plethysmography, which allows the measurement of lung volume, and volumetric capnography, a tool to measure the anatomic dead space and airways uniformity. These techniques may be used independently or combined to assess airways function at different lung volumes.
02:05
Self-Presentation: Self-Monitoring and Self-Handicapping
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2020
People can go to great lengths to protect their self-image and present themselves in ways that they want others to see them. Sociologist Erving Goffman presented the idea that a person is like an actor on a stage. Calling his theory dramaturgy, Goffman believed that we use “impression management” to present ourselves to others as we hope to be perceived. Each situation is a new scene, and individuals perform different roles depending on who is present (Goffman, 1959). Think about the way you...
FAQs
Infrared absorption provides the measurement basis for most capnographs. As exhaled air is analyzed, carbon dioxide absorbs infrared radiation, allowing the device to track CO₂ during each breath. The resulting measurements are displayed over time, so investigators can examine respiratory changes continuously rather than relying on isolated observations.
The waveform represents successive phases of exhalation, making its shape informative beyond a single numerical value. By following the pattern breath by breath, an observer can identify altered breathing patterns and relate them to ventilation or airway patency. This graphical view is especially useful when respiratory behavior changes during monitoring.
End-tidal CO₂ focuses attention on the concentration measured at the end of expiration, when a breath has reached its terminal exhalation point. Tracking this value alongside the waveform helps assess changes in ventilation and respiratory physiology. In biological studies, its trend can complement observations of respiratory rate and breathing pattern.
Respiratory rate describes how often breaths occur, while the end-tidal CO₂ value adds information about the carbon dioxide level at the end of expiration. The waveform supplies a third view by showing successive exhalation phases. Considering all three observations helps investigators characterize ventilatory activity more fully than rate alone.
During a respiratory study, the instrument is followed continuously as each breath produces a CO₂ measurement and waveform. The observer can compare respiratory rate, end-tidal CO₂, and waveform changes over time, then relate those patterns to ventilation, airway patency, gas exchange, or metabolic and ventilatory activity. This supports structured interpretation of changing physiology.
Capnography is relevant in anesthesia, experimentation, and respiratory investigations because it provides a continuous respiratory readout. Investigators can follow breathing patterns, ventilation, airway patency, and gas exchange as conditions change. In biology, this makes the method useful for connecting observed CO₂ dynamics with broader respiratory or metabolic activity.