Impact of Air Bubbles in Blood Gas Analysis
Author Information
Author(s): Laura Pighi, Gian Luca Salvagno, Roberta Ferraro, Giovanni Celegon, Brandon M. Henry, Giuseppe Lippi
Primary Institution: University of Verona, Section of Clinical Biochemistry and School of Medicine, Verona, Italy
Hypothesis
Does the presence of an air bubble in a blood gas syringe affect the accuracy of test results?
Conclusion
Air bubbles in blood gas syringes can lead to significant inaccuracies in test results, affecting clinical decisions.
Supporting Evidence
- Air bubbles caused significant increases in pH, pO2, SO2, total hemoglobin, and hematocrit.
- Values of pCO2, sodium, and ionized calcium were significantly reduced in the presence of air bubbles.
- All changes except for pH exceeded performance specifications.
Takeaway
If there's air in a syringe used for blood tests, it can mess up the results, making doctors think something is wrong when it isn't.
Methodology
Venous blood was collected from 17 laboratory workers, filling two syringes: one with blood only and the other with blood and an air bubble, followed by blood gas analysis.
Potential Biases
Potential bias due to the small sample size and the specific population of laboratory workers.
Limitations
The study's results are based on a limited sample size and only venous blood.
Participant Demographics
17 laboratory workers, mean age 46±11 years, 10 women.
Statistical Information
Confidence Interval
95% CI
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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