Comparisons of electrolytes were measured by Point-of-care testing and auto-analyzer
- VernacularTitle:Электролитийн хэмжээг цусны хийн анализатор болон автомат анализатороор харьцуулан тодорхойлсон дүн
- Author:
Bayarmaa E
1
;
Byambasuren B
2
;
Ulziisaikhan E
3
;
Bayarjavkhlan Ch
1
Author Information
1. MNUMS;Gurvan gal hospital
2. MNUMS
3. Mobio laboratory
- Publication Type:Journal Article
- Keywords:
electrolyte;
point-of-care testing;
blood gas analyzer;
potassium;
sodium;
whole blood
- From:
Health Laboratory
2017;6(1):27-31
- CountryMongolia
- Language:Mongolian
-
Abstract:
Introduction:Electrolyte values are measured by two different analyzers: arterial blood gas (Point of care) and auto-analyzers. Those two has different methods to measure electrolytes and have several pros and cons. We evaluated if there was agreement between whole blood electrolytes measured by a point-of-care device and serum electrolytes measured using indirect ion-selective electrodes.
Materials and methods:An observational cohort study was conducted in 50 paired venous samples from patients admitted in Gurvan gal central hospital. Those were analyzed on OPTC blood gas devise and Roche c-501 auto-analyzer. Statistical analyses were performed using paired t-test and persons’ correlation test.
Results:Sodium mean range was 138.54 mmol/l (SD=3.69) by blood gas analyser, but by the automated analyser mean range was 140.75 mmol/l (SD=4.45). Mean difference of the normal sodium group was 1.77 (SD=1.65, p=0.039), and hyposodium group was 4.4 (SD=0.33, p=0.007). Pottasium mean range was 3.13 mmol/l (SD=0.53) by blood gas analyser, but by the automated analyser mean range was 4.42 mmol/l (SD=0.45). Mean difference of the normal sodium group was 0.18 (p<0.001), and hypokalemi group was 1.44 (p<0.001).
Conclusion:Clinicians should be aware of the difference between whole blood and serum electrolytes. A correction factor needs to be determined at each laboratory.
- Full text:HL-2017-6(1)-27-31.pdf
