It has been suggested that a tentative preoperative decision favoring a pericardial lesion, on the one hand, or a myocardial lesion, on the other, may be made from certain noninvasive procedures, including the electrocardiogram. An attempt was therefore made to detect associated myocardial fibrosis by electrocardiogram in 67 patients with constrictive pericarditis as proven at catheterization (...

An example of reversed reciprocal rhythm is presented with associated 2:I heart block and other abnormalities of conduction. The electrocardiograms have been analysed and compared with an earlier electrocardiogram in which sinus rhythm was present. Despite dramatic electrocardiographic abnormalities, evidence is offered which suggests that there may have been only a small alteration in activity...

It has been suggested that a tentative preoperative decision favoring a pericardial lesion, on the one hand, or a myocardial lesion, on the other, may be made from certain noninvasive procedures, including the electrocardiogram. An attempt was therefore made to detect associated myocardial fibrosis by electrocardiogram in 67 patients with constrictive pericarditis as proven at catheterization (...

Electrocardiograms were recorded from 89 clinically healthy Holstein cattle divided into 10 age groups, comprising newborn calves (18 to 72 hours), 15 days, 1, 3, 6 and 9 months and 1, 3, 5, and 7 years of age. The electrocardiograms were recorded on a bipolar base apex lead, using limb lead I. Duration and amplitude of the P, QRS complexes, T waves and the PR, RR, QT and ST intervals were meas...

OBJECTIVE To assess the accuracy of general practitioners, practice nurses, and interpretative software in the use of different types of electrocardiogram to diagnose atrial fibrillation. DESIGN Prospective comparison with reference standard of assessment of electrocardiograms by two independent specialists. SETTING 49 general practices in central England. PARTICIPANTS 2595 patients aged ...