Related Experiment Video
Updated: Aug 5, 2025

Author Spotlight: Exploring Venous Waveforms for Non-Invasive Respiratory Monitoring in Pigs
Published on: March 8, 2024
Exploration of the optimal pulse oximetry-derived oxygen saturation target for critically ill AECOPD patients: a
Xuequn Guo1, Donghao Guo2, Qiu Luo1
1Quanzhou First Hospital Affiliated to Fujian Medical University.
Background:
Appropriate levels of blood oxygen are crucial for critically ill patients. However, the optimal oxygen saturation has not been confirmed for AECOPD patients during their ICU stays. The purpose of this study was to determine the optimal oxygen saturation range target to reduce mortality for those individuals.
Methods:
Data of 533 critically ill AECOPD patients with hypercapnic respiratory failure from the MIMIC-IV database were extracted. The association between median SpO2 value during ICU stay and 30days mortality was analyzed by LOWESS curve, and an optimal range of SpO2(92-96%) platform was observed. Comparisons between subgroups and linear analyses of the percentage of SpO2 in 92-96% and 30days or 180 days mortality were performed to support our view further.
Methods:
Although patients with 92-96% SpO2 had a higher rate of invasive ventilator than those with 88-92%, there was no significant increase in the adjusted ICU stay duration, non-invasive ventilator duration, or invasive ventilator duration while leading to lower 30days and 180days mortality in the subgroup with 92-96%. In addition, the percentage of SpO2 in 92-96% was associated with decreased hospital mortality.
Conclusion:
In conclusion, SpO2 within 92-96% could lead to lower mortality than 88-92% and > 96% for AECOPD patients during their ICU stay.
More Related Videos
Related Concept Videos
Pulse Oximetry
Purpose
Average SpO2 values are greater than 95%. If the readings fall below 90%, it indicates that...
Special considerations while measuring oxygen saturation
Ensuring accuracy in vital sign recordings while prioritizing patient comfort and minimizing anxiety is...
Guidelines For Measuring Vital Signs
Before taking a patient's vital signs, a nurse would consider and assess the patient's comfort level and ensure appropriate equipment is available.
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...
Treatment for Pulmonary Arterial Hypertension: Oxygen Therapy for Respiratory Failure
Oxygen therapy is vital in increasing and maintaining blood oxygen levels in PAH patients. As a result, it aids in reducing fatigue,...
Respiratory Assessment: Purpose and Indications
Objectives and Importance:
The primary goal of respiratory assessment is to evaluate patients at early risk of clinical deterioration. Since respiratory distress often precedes other signs of declining health, breathing patterns and sounds become a...

