High-Frequency Components in the Electrocardiogram

[High frequency components in the electrocardiogram].

The anatomic basis for high-frequency components in the electrocardiogram.

In a correlative study between selected body-surface potential recordings and anatomic findings, multilead sets of high-fidelity, high-speed records from 128 persons were studied in connection with the results of our detailed postmortem dissections of their hearts. Attention was focused on high-frequency components (notching and slurring of the expanded QRS) as described by Langner. We found th...

Study of high - frequency electrocardiogram *

*The project is subsidized by National Nature Science Foundation of China.(39970205, 39270184, 3870613) **Address for correspondence: Jiguang Ge, Department of Biology, Zhejiang University, Hangzhou 310027, China. Telephone: (571) 5172242-3237. E-mail:[email protected] Abstract-High-frequency electrocardiogram (ECG) has been developed for more than 40 years and it is still not applied to ...

High-frequency components in the electrocardiogram. A comparative study of normals and patients with myocardial disease.

SUMMARY Expanding the frequency response of the electrocardiogram and its derivative to 1,000 cps revealed notching in certain parts of the QRS complex which correlates with the presence of primary myocardial disease. Chi-square analysis of data from 169 patients with myocardial involvement indicated that notching on the downstroke of leads X, V4, and V6 separated abnormal from normal patients ...

Study of High Frequency Components in Electrocardiogram by Power Spectrum Analysis

• In a paper read before the Chelsea Clinical Society on March 19, 1912, Binthoven stated that a string galvanometer, with a deflecting time of 0.01 sec./mm. when standardized in the usual manner, was adequate to record the form and dimensions of the electrocardiogram.* He further stated that if the string could be made 10 or 100 times faster, the sensitivity remaining constant, no perceptible ...