International Journal of Critical Illness and Injury Science

ORIGINAL ARTICLE
Year
: 2022  |  Volume : 12  |  Issue : 3  |  Page : 160--164

Point-of-care versus central laboratory measurements of electrolytes and hemoglobin: A prospective observational study in critically ill patients in a tertiary care hospital


Sangeeta Sahoo1, Jyotiranjan Sahoo2, Neha Singh3, Upendra Hansda1, Satyabrata Guru1, Nitish Topno1 
1 Department of Trauma and Emergency, IMS and SUM Hospital, Bhubaneswar, Odisha, India
2 Department of Community Medicine, IMS and SUM Hospital, Bhubaneswar, Odisha, India
3 Department of Anesthesiology and Critical Care, IMS and SUM Hospital, Bhubaneswar, Odisha, India

Correspondence Address:
Dr. Upendra Hansda
Department of Trauma and Emergency, AIIMS, Bhubaneswar, Odisha
India

Background: A blood gas analyzer is a point-of-care (POC) testing device used in the Emergency Department (ED) to manage critically ill patients. However, there were differences in results found from blood gas analyzers for hemoglobin (Hgb) and electrolytes parameters. We conducted a comparative validity study in ED in patients who had requirements of venous gas analysis, complete blood count, and electrolytes. The objective was to find the correlation of Hgb, sodium (Na+), and potassium (K+) values between the blood gas analyzer and laboratory autoanalyzer. Methods: A total of 206 paired samples were tested for Hgb, Na+, and K+. Total 4.6 ml of venous blood was collected from each participant, 0.6 ml was used for blood gas analysis as POC testing and 4 ml was sent to the central laboratory for electrolyte and Hgb estimation. Results: The mean difference between POC and laboratory method was 0.608 ± 1.41 (95% confidence interval [CI], 0.41–0.80; P < 0.001) for Hgb, 0.92 ± 3.5 (95% CI, 0.44–1.40) for Na+, and 0.238 ± 0.62 (95% CI, −0.32–0.15; P < 0.001) for K+. POC testing and laboratory method showed a strong positive correlation with Pearson correlation coefficient (r) of 0.873, 0.928, and 0.793 for Hgb, Na+, and K+, respectively (P < 0.001). Conclusion: Although there was a statistical difference found between the two methods, it was under the United States Clinical Laboratory Improvement Amendment range. Hence, starting the therapy according to the blood gas analyzer results may be beneficial to the patient and improve the outcome.


How to cite this article:
Sahoo S, Sahoo J, Singh N, Hansda U, Guru S, Topno N. Point-of-care versus central laboratory measurements of electrolytes and hemoglobin: A prospective observational study in critically ill patients in a tertiary care hospital.Int J Crit Illn Inj Sci 2022;12:160-164


How to cite this URL:
Sahoo S, Sahoo J, Singh N, Hansda U, Guru S, Topno N. Point-of-care versus central laboratory measurements of electrolytes and hemoglobin: A prospective observational study in critically ill patients in a tertiary care hospital. Int J Crit Illn Inj Sci [serial online] 2022 [cited 2022 Nov 29 ];12:160-164
Available from: https://www.ijciis.org/article.asp?issn=2229-5151;year=2022;volume=12;issue=3;spage=160;epage=164;aulast=Sahoo;type=0