Quaal S J
Department of Health Sciences, University of Utah, Cardiovascular Advanced Practice Nurse, Salt Lake VA Healthcare System, Salt Lake City, USA.
J Cardiovasc Nurs. 2001 Jan;15(2):71-82. doi: 10.1097/00005082-200101000-00008.
Pulmonary artery pressures and arterial pressures are important hemodynamic measurements utilized in clinical management decision making for critically ill patients. Studies have demonstrated a concerning rate of measurement error, often due to technical errors. Zeroing, leveling, and dynamic response testing are essential components of assuring the quality of measurements. This article describes a multilevel approach to assuring the accuracy of measurements. It includes the physics underlying each of these principles, criteria for judging the efficacy of the dynamic response, and clinically applicable methods for measuring the natural frequency and damping coefficient of pressure monitoring systems.
肺动脉压和动脉压是危重症患者临床管理决策中重要的血流动力学测量指标。研究表明，测量误差发生率令人担忧，这通常是由技术错误导致的。调零、校准和动态响应测试是确保测量质量的重要组成部分。本文描述了一种确保测量准确性的多层次方法。它包括这些原理各自的物理学基础、判断动态响应有效性的标准以及测量压力监测系统固有频率和阻尼系数的临床适用方法。
