Photoplethysmography and Heart Rate Variability for the Diagnosis of Preeclampsia

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(Anesth Analg. 2018;126:913–919)Nearly one-third of patients with preeclampsia (PE) do not present clearly, and there currently is no predictive test with adequate discrimination power. Analysis of peripheral pulse waveforms has long been recognized to indicate arterial resistance characteristics. The authors of the present study hypothesized it may be possible to distinguish women with PE with severe features from nonpreeclamptic patients, using parameters of photoplethysmographic (PPG) pulse and electrocardiogram (ECG) alone. To that end, the authors of the present study determined a set of timing, shape, and statistical features available through these noninvasive measures.

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