A quality control procedure for central venous blood sampling based on potassium concentrations

Abstract

To evaluate the extent of agreement between two blood collection methods for electrolytes, central venous blood sampling by the push-pull technique versus venipuncture, and to mitigate errors in blood sampling by a potassium-based quality control procedure.

Keywords

• push-pull technique
• central venous blood sampling
• potassium concentrations
• quality improvement