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- Title
Effect of exogenous lipids contamination on blood gas analysis.
- Authors
Lippi, Giuseppe; Pighi, Laura; Salvagno, Gian Luca; Tiziani, Elena; Castellini, Maria Elena; Ferraro, Roberta; Henry, Brandon M.
- Abstract
The purpose of this study was to investigate the effects of contamination of venous blood with a lipid-containing solution on parameters measured by a modern blood gas analyzer. We collected venous blood from 17 healthcare workers (46 ± 11 years; 53 % women) into three blood gas syringes containing 0 , 5 and 10 % lipid-containing solution. Blood gas analysis was performed within 15 min from sample collection on GEM Premier 5000, while triglycerides and serum indices were assays on Roche COBAS C702. Triglycerides concentration increased from 1.0 ± 0.3 mmol/L in the uncontaminated blood gas syringe, to 39.4 ± 7.8 and 65.3 ± 14.4 mmol/L (both p<0.001) in syringes with 5 and 10 % final lipid contamination. The lipemic and hemolysis indices increased accordingly. Statistically significant variation was noted for all analytes except hematocrit and COHb in the syringe with 5 % lipids, while only COHb did not vary in the syringe with 10 % lipids. Significant increases were observed from 5 % lipid contamination for pO2, SO2 and lactate, while the values of pH, pCO2, sodium, potassium, chloride, ionized calcium, glucose, hematocrit (10 % contamination), hemoglobin and MetHB decreased. All these changes except lactate and CoHb exceeded their relative performance specifications. Artifactual hyperlipidemia caused by contamination with exogenous lipids can have a clinically significant impact on blood gas analysis. Manufacturers of blood gas analyzers must be persuaded to develop new instruments equipped with serum indices.
- Subjects
ITALY; BLOOD gases analysis; GLUCOSE; OXYGEN saturation; LIPIDS; BLOOD collection; DESCRIPTIVE statistics; SYRINGES; CARBOXYHEMOGLOBIN; HEMATOCRIT; LACTATES; SODIUM; POTASSIUM chloride; MEDICAL equipment contamination; TRIGLYCERIDES; HEMOLYSIS &; hemolysins; CONFIDENCE intervals; CARBON dioxide
- Publication
Advances in Laboratory Medicine / Avances en Medicina de Laboratorio, 2024, Vol 5, Issue 3, p301
- ISSN
2628-491X
- Publication type
Article
- DOI
10.1515/almed-2024-0043