Methods, systems and devices for detecting atrial fibrillation

摘要

Disclosed herein are various embodiments of methods, systems and devices for detecting atrial fibrillation (AF) in a patient. According to one embodiment, a hand-held atrial fibrillation detection device acquires an electrocardiogram (ECG) from the patient over a predetermined period of time. After acquiring the ECG from the patient, the device processes and analyzes the ECG and makes a determination of whether or not the patient has AF.

主权项

1. A method of detecting atrial fibrillation in an electrocardiogram (ECG) acquired from a patient using a device, comprising:
using at least first and second electrodes of the device to sense electrocardiograms (“ECGs”) of the patient;
using, in the device, at least one processor configured to receive and process signals representative of the ECGs sensed by the electrodes to:determine times corresponding to R-waves in the electrocardiogram;determine plurality of sequentially-ordered R-R time intervals corresponding to the R-wave times;select an R-R test interval (INT) from among the plurality of R-R time intervals;sequentially select the R-R time intervals and comparing the R-R intervals in an episode base rhythm state machine to determine which of the selected R-R time intervals correspond to at least one of a predetermined number of non-atrial-fibrillation states, at least some of the non-atrial-fibrillation states requiring updating of INT when R-R time intervals are compared therein, and further determining which of the selected R-R time intervals correspond to a potential atrial fibrillation state, andgenerate, on the basis of the selected and compared R-R time intervals, a base cardiac rhythm score; determining, in the processor, and on the basis of the base cardiac rhythm score, whether or not the patient has atrial fibrillation; providing an audio or visual indication as to whether or not atrial fibrillation has been detected in the patient.