How reliable are electrolyte and metabolite results measured by a blood gas analyzer in the ED?

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• 作者：Emin Uysal ; MD^a ; ¹ ; ^{eminuysal79@mynet.com" class="auth_mail" title="E-mail the corresponding author} ; Yahya Ayhan Acar ; MD^b ; ^{yahya_acar@yahoo.com" class="auth_mail" title="E-mail the corresponding author} ; Ahmet Kutur ; MD^a ; ¹ ; ^{ahmetkutur@mynet.com" class="auth_mail" title="E-mail the corresponding author} ; Erdem Cevik ; MD^c ; ² ; ^{cevikerdem@yahoo.com" class="auth_mail" title="E-mail the corresponding author} ; Necati Salman ; MD^b ; ³ ; ^{dr_necatisalman@yahoo.com" class="auth_mail" title="E-mail the corresponding author} ; Onur Tezel ; MD^b ; ³ ; ^{dr.onurtezel@gmail.com" class="auth_mail" title="E-mail the corresponding author}
• 刊名：The American Journal of Emergency Medicine
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：34
• 期：3
• 页码：419-424
• 全文大小：1040 K

文摘

Blood gas analysis is a frequently ordered test in emergency departments for many indications. It is a rapid technique that can analyze electrolyte and metabolites in addition to pH and blood gases. The aim of this study was to investigate the correlation of electrolyte and metabolite results measured by blood gas and core laboratory analyzers.

Methods

This was a prospective, single-center observational study conducted in a tertiary care center's emergency department. All adult patients requiring arterial/venous blood gas analysis and core laboratory tests together for any purpose were consecutively included in the study between April 2014 and July 2015. Patients younger than 16 years, having any intravenous infusion or blood transfusion prior to sampling, or who were pregnant were excluded.

Results

A total of 1094 patients' (male = 547, female = 547) paired blood samples were analyzed. The mean age was 58.10 ± 21.35 years, and there was no difference between arterial and venous sampling groups by age, pH, or sex (P = .93, .56, and .41, respectively). Correlation coefficients for hemoglobin, hematocrit, glucose, potassium, sodium, and chloride levels measured by blood gas analyzer and core laboratory analyzers were 0.922, 0.896, 0.964, 0.823, 0.854, and 0.791, respectively.

Conclusion

Blood gas analysis results were strongly correlated for hemoglobin, hematocrit, glucose, potassium, and sodium levels but were only moderately correlated for chloride levels. These parameters as measured by a blood gas analyzer seem reliable in critical decision making but must be validated by core laboratory results.