Dec 30, 2024 · Capnography waveform interpretation can be used for diagnosis and ventilator-trouble shooting. The CO2 waveform can be analyzed for 5 …

Initially, waveform and EtCO2 value are low during cardiac arrest but increase with effective chest compressions. The higher the EtCO2 value the greater the chance of ROSC. EtCO2 ≥ 20 mmHg …

Aug 20, 2025 · A healthy capnography waveform displays a characteristic rectangular shape with rounded corners. This waveform has four phases reflecting carbon dioxide during a breath.

Jul 21, 2025 · A normal capnography waveform has a square shape: sharp upstroke, flat alveolar plateau and a quick return to baseline. This shows that exhaled CO2 is moving out efficiently.

The capnography waveform depicts the concentration of CO 2 in the breath and has a generally uniform square-like morphology with consistent frequency. In this video, we look at what normal respiratory …

In a normal capnography reading, the EtCO₂ is between 35-45 millimeters of mercury (AHA, 2020; Neumar et al., 2020). As Figure 1 illustrates, the Alpha Angle (between the expiratory upstroke and …

Oct 18, 2025 · This article offers a clear and practical overview of capnography, including how it works, what it reveals about a patient’s respiratory function, and how to interpret the waveforms to make …

CO2 concentration is displayed graphically as a capnogram (waveform) representing CO2 levels throughout the respiratory valuable information on ventilation, haemodynamics and intubated and …

Sep 6, 2021 · Key information including how to read and interpret capnography waveforms commonly seen in the emergency department. This blog has been written and peer-reviewed by emergency …

Aug 25, 2025 · Data is displayed as a numerical value and a graphical waveform. Two primary methods exist: mainstream and sidestream. Mainstream capnography involves placing the CO2 sensor …