公开(公告)号：WO1981002665A1

公开(公告)日：1981-10-01

申请号：PCT/US1981000342

申请日：1981-03-19

Applicant: DATAMEDIX INC

Inventor： DATAMEDIX INC ,  JUDELL N

IPC: A61B05/04

CPC classification number: A61B5/046

Abstract: A method and apparatus for declaring the presence of ventricular fibrillation from an incoming electrocardiographic signal (12) includes sampling (14, 16) at a first frequency and filtering (18) the same to produce a second frequency lower than the first frequency. This filtered signal is passed to a linear predictor (20) which fits a model signal spectrum to the actual signal spectrum and computes (60 d-e, 62 a-c, 64 a-b) coefficients representative of bandwidth and mean frequency of the signal over a short time interval. Then the coefficient of bandwidth (A2) is compared (68, 69) with a threshold value to determine whether or not it exceeds same, and if so the mean frequency coefficient (A1) is compared (71-76) with a range of values to determine whether it falls within a range corresponding to ventricular fibrillation; if it does, ventricular fibrillation is then declared (70) to be present.

Abstract translation: 用于从入射的心电图信号（12）声明存在心室颤动的方法和装置包括以第一频率进行采样（14,16）并对其进行滤波（18）以产生低于第一频率的第二频率。 该滤波信号被传递到线性预测器（20），该线性预测器（20）将模型信号频谱适合于实际信号频谱，并且计算表示在短时间间隔内信号的带宽和平均频率的（60de，62ac，64ab）系数 。 然后将带宽系数（A2）与阈值进行比较（68,69），以确定其是否超过相同，如果是，将平均频率系数（A1）与值范围（71-76）进行比较 以确定其是否落在对应于心室颤动的范围内; 如果是，则宣布室性颤动（70）存在。