Related Experiment Video
Updated: Jun 16, 2026

Expired CO2 Measurement in Intubated or Spontaneously Breathing Patients from the Emergency Department
Published on: January 29, 2011
Arterial blood gas analysis in risk stratification of acute carbon monoxide poisoning
Junjie Ke1,2, Lin Yin3, Yuanyuan Gao4
1Graduate School, Bengbu Medical University, Bozhou, China.
Abstract:
This single-centre retrospective cohort study demonstrates that arterial blood gas (ABG) parameters independently stratify ICU admission risk in acute carbon monoxide poisoning (ACOP) beyond carboxyhemoglobin (COHb). Among 124 ACOP patients, the acidosis group (pH<7.35) had a higher ICU admission rate [44.8%, 95% Confidence Interval (CI): 26.8%∼63.7%] than the normal pH (17.7%, 95%CI: 10.1%∼27.5%) and alkalemia groups (12.5%, 95%CI: 1.6%∼38.3%, P<0.001), with a median COHb of 33.1%. The acidosis group presented severe metabolic disturbance (median lactate 7.60 mmol/L, GCS 7). Spearman analysis showed arterial lactate was more strongly associated with disease severity markers than COHb. Multivariate logistic regression confirmed GCS score, COHb, arterial lactate, and HCO3 as independent predictors for ICU admission.
More Related Videos
06:22Surfactant Depletion Combined with Injurious Ventilation Results in a Reproducible Model of the Acute Respiratory Distress Syndrome (ARDS)
Published on: April 7, 2021
07:51Evaluation of Capnography Sampling Line Compatibility and Accuracy when Used with a Portable Capnography Monitor
Published on: September 29, 2020
Related Concept Videos
Diagnosing Acidosis and Alkalosis
First, the pH level is assessed to determine whether the blood pH is normal (7.35–7.45), low (acidosis), or high (alkalosis).
Next, the PCO2 and HCO3− values are examined to...
Blood Studies I: ABG and VBG
Arterial Blood Gas (ABG)
Arterial Blood Gas (ABG) studies are crucial for assessing the lungs' ability to supply oxygen and remove carbon dioxide, reflecting the patient's ventilation status. They also help understand the kidneys' capacity to reabsorb or...
Assessment of Diffusion and Perfusion
The Role of Diffusion in Respiration
Diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration. In the respiratory system, this principle...
Acute Respiratory Failure-IV
Acute Respiratory Failure-V
Ensure that patients are monitored continuously for their response to therapy, including changes in...
Chemical Factors Affecting Respiration Centers
CO2 has a potent influence on respiration and is strictly regulated. Under...