Common errors in clinical measurement

摘要: Abstract The evolution of increasingly more complex measuring devices within clinical practice has the potential to generate significantly erroneous measurements. This may lead misguided decision-making if clinicians are unaware limitations equipment they using. In general, measurement errors be random or systematic. value a test evaluated in terms its accuracy (bias) and precision. Bias is mean difference repeated results from gold standard result. Precision deviation differences overcome by triangulation use multiple different tests reduce effect individual systematic errors. Errors associated with apparatus classified into hardware, sampling patient sources. Specific causes error pulse oximetry, ECG, non-invasive invasive blood pressure, gas cardiac output discussed.