title: Baseline: a computer method of calculating baseline in fetal heart rate recordings.
abstract: 'Baseline' estimation is of fundamental importance in both visual and numerical analysis of fetal heart rate recordings, even though the baseline itself is in reality an imaginary line. Here we describe a linear method of estimating baseline in fetal heart rate recordings. The method is easy to implement on a digital computer, and is capable of precise mathematical analysis. Non-linear methods, on the other hand, introduce unpredictable and non-quantifiable statistical bias, and are best avoided.
mesh_terms: D003201:Computers; D005260:Female; D005323:Fetal Monitoring / Q000295:instrumentation*; D006339:Heart Rate; D006801:Humans; D011247:Pregnancy; D012984:Software