Price (1968) found that 300o of 20 males with 47,XYY karyotype had electrocardiograms (ECG) with prolonged P-R intervals. This prompted us to try to ascertain double-Y males by screening a large sample of clinically normal males through their ECG. From a file of about 30,000 ECGs, collected by one of us (M.F.L.) during the last 7 years, 34 were selected because (1) they were normal except for h...

Automatic analysis of electrocardiograms with adequate explain-ability is a challenging task. Many deep learning based methods have been proposed for automatic classification electrocardiograms. However, very few them provide detailed explainable evidence. In our study, we explore ECG through explicit decomposition single-beat (median-beat) signal. particular, every sample decomposed into five ...

BACKGROUND: Electrocardiography is one of the simplest, most widely used, inexpensive, and informative methods in functional diagnostics; yet, if performed poorly, its diagnostic value sharply reduced. Several attempts were made to systematize errors deviations electrode application, but all concerned common options (rearrangement red yellow electrodes, green chest electrodes above or below sta...

Patients with clinically significant coronary artery disease often have normal resting electrocardiograms. Clinical and experimental studies have shown that body surface potential maps provide improved recognition of some disease states and more regionally selective information than standard electrocardiograms. Body surface maps were recorded at rest from 41 symptomatic patients with angiograph...

The electrocardiograms of 1,000 chronic alcoholic patients were examined and analyzed. Evidence is presented that excessive consumption of alcohol, in the absence of organic heart disease, may produce changes in the electrocardiogram. The predominant abnormalities were sinus tachycardia and nonspecific T-wave changes. These abnormalities were present in the majority of the patients, provided th...

The incidence of the four main types of axis deviation in each diagnostic group of congenital malformations of the heart was found by an examination of 2,752 electrocardiograms from the Harriet Lane Home Cardiac Clinic. Records from patients with dextrocardia or dextrarotation of the heart, and those with complete bundle branch block were excluded. The precordial and unipolar limb leads in the ...

A graphic method for depicting serial changes in electrocardiograms is described and demonstrated for patients being treated in an antihypertension clinic. For these patients, the diagnostic categories, normal, left ventricular hypertrophy, and biventricular hypertrophy, are of primary interest. For each electrocardiogram, 14 measurements are used to compute posterior probabilities for each of ...

• In the experimental animal, the taking of 12-lead electrocardiograms has been troublesome, especially if the electrocardiograms were to be taken in prone as well as in supine positions. The coat of oily fur has usually been responsible for very high skin resistances or condenser effects between the skin and the German silver electrodes. This has resulted in overshooting or fling in the electr...