Mobile plethysmographic device

摘要

A mobile plethysmographic device for detecting a premature ventricular contraction event is disclosed herein. The mobile plethysmographic device generates a pleth waveform, which is automatically screened by algorithms that measure the waveform to correlate, detect and store aberrations related to heart anomalies. A premature ventricular contraction event for a patient is determined based on an identification of a time interval of the pleth waveform that is below the threshold minimum time interval followed immediately by a time interval that is above the threshold maximum tine interval.

主权项

1. A method for determining an arrhythmia event for a patient, the method comprising:
generating a plethysmographic signal for a patient from an optical signal generated by an optical sensor and processed by a processor, the optical sensor and the processor on a mobile plethysmographic device, the plethysmographic signal comprising a plurality of pulse waves; identifying at the processor a maximum peak value for each pulse wave of the plurality of pulse waves of the plethysmographic signal to generate a plurality of maximum values of the plethysmographic signal; calculating at the processor a plurality of time intervals between adjacent maximum values of the plethysmographic signal; establishing at the processor a threshold minimum time interval and a threshold maximum time interval for the plurality of time intervals; and determining at the processor an arrhythmia event for the patient based on an identification of a time interval that is above the threshold maximum time interval.