| 摘要 |
Methods for determining a cardiovascular parameter reflecting fluid or volume changes and for detecting arrhythmia are disclosed. These methods involve receiving a waveform dataset corresponding to an arterial blood pressure, pulseox, Doppler ultrasound or bioimpedance signal and analyzing the waveform to detect irregular cardiac cycles. Irregular cardiac cycles are detected, for example, by comparing parameters of individual cardiac cycles to the parameters of other or average cardiac cycles. If any irregular cardiac cycles are present, their effect is compensated for to form a modified waveform dataset. Once any irregular cardiac cycles are compensated for, a cardiovascular parameter reflecting fluid or volume changes using the modified waveform dataset is calculated. In the method for determining arrhythmia, if the number of irregular cardiac cycles exceeds a predetermined arrhythmia threshold, a user such as a medical professional is notified.
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