Respiratory failure & ventilation
Effects of Analysis Delay on pH , pO 2 , pCO 2 , Bicarbonate, Glucose, Lactate, Electrolytes, and Other Arterial Blood Gas Variables
Authors' conclusion
According to our results, changes in the blood gas variables did not exceed the predefined thresholds for clinical relevance during the first 30 min after sample collection.
Study context
- Population
- Patients with arterial blood gas (ABG) samplesfinal analysis
- Participants
- 80 patients
- Comparison
- ABG analysis delayed up to 120 min vs immediate analysis
- Outcome
- Time point at which the first ABG variable exceeded a predefined clinically acceptable threshold
Methodological detailstwo types of blood gas analyzers, repeated measurements at 0, 5, 10, 20, 30, 45, 60, and 120 min
- Two types of blood gas analyzers
- Repeated measurements at 0, 5, 10, 20, 30, 45, 60, and 120 min
Main finding
As reported in the abstract
- First variable to exceed the threshold: pO2, increased above it after 45 min on both analyzers
- At 30 min, all variable changes within the predetermined range for clinical relevance
Original publication
Effects of Analysis Delay on pH , pO 2 , pCO 2 , Bicarbonate, Glucose, Lactate, Electrolytes, and Other Arterial Blood Gas Variables. Acta Anaesthesiol Scand. Published 7 May 2025. doi:10.
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