Comparison of the Results of Venous Blood Gas and Laboratory Measurement of Potassium/Venöz Kan Gazi Potasyum Sonuçlari ile Laboratuvar Potasyum Sonuçlarinin Karsilastirilmasi

• Published in: Eurasian journal of emergency medicine 2012-06, Vol.11 (2), p.73
• Main Authors: Bozkurt, Selim, Altunören, Orçun, Kurutas, Ergül Belge, Okumus, Mehmet, Dogan, Mustafa
• Format: Article
• Language: English
• Subjects: Blood; Laboratories; Potassium; Studies
• ISSN: 2149-5807; 2149-6048

To compare venous blood gas potassium levels, which provides rapid results, with laboratory potassium levels. We reviewed the data of patients who had been referred to our emergency service between January 1 2011 and March 21 2011. Concurrent venous blood gas potassium levels and laboratory potassium levels from 99 patients were included. The data were analyzed using SPSS for Windows version 9.0. Laboratory potassium levels were found to be 4.5 mmol/l (SD 0.86 mmol/l, 95% CI 4.32-4.66 mmol/l, min. 3.1 mmol/l, max. 7.3 mmol/l). Venous blood gas potassium levels were found to be 3.94 mmol/l (SD 0.79 mmol/l, 95% CI 3.78-4.09 mmol/l, min. 2.25 mmol/l, max. 6.37 mmol/l). The difference between laboratory potassium levels and venous blood gas potassium levels was 0.56 mmol/l (SD 0.41 mmol/l, 95% limits of agreement were from -0.24 mmol/l to 1.36 mmol/l, 95% CI 0.48-0.64 mmol/l). Both potassium levels were highly correlated (r= 0.882, p