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Computer Program for Error Grid Analysis in Arterial Blood Pressure Method Comparison Studies
Oliver Grothe1, Anika Kaplan, Karim Kouz
1From the *Institute of Operations Research, Karlsruhe Institute of Technology, Karlsruhe, Germany †Department of Anesthesiology, Center of Anesthesiology and Intensive Care Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany ‡Outcomes Research Consortium, Cleveland, Ohio.
Abstract:
We recently proposed continuous error grid analysis to describe the clinical relevance of measurement differences between a test and a reference method for arterial blood pressure (AP) measurement. Here, we present instructions on how to perform continuous error grid analysis in AP method comparison studies and provide a freely accessible computer program for automated computing of continuous error grids and calculation of the proportion of measurement pairs in the different risk zones.
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This invasive approach involves cannulating a peripheral artery. During each cardiac contraction, pressure generates mechanical motion within the catheter, transmitted through rigid, fluid-filled tubing to a transducer. This transducer converts mechanical motion into electrical signals displayed as waveforms on a monitor. An automatic flushing system prevents blood backflow. Due to the potential risk of unexpected arterial blood loss, this method is primarily used in intensive...