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Normal electrocardiograms in cardiovascular disease

The American heart journal, 1946, Vol.31 (1), p.33-52 [Peer Reviewed Journal]

1946 ;ISSN: 0002-8703 ;EISSN: 1097-6744 ;DOI: 10.1016/0002-8703(46)90390-0 ;PMID: 21010877

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  • Title:
    Normal electrocardiograms in cardiovascular disease
  • Author: Pazzanese, Dante ; Bertacchi, Silvio
  • Subjects: Cardiovascular Diseases ; Electrocardiography ; Heart ; Humans ; Old Medline
  • Is Part Of: The American heart journal, 1946, Vol.31 (1), p.33-52
  • Description: In a series of 722 cases of cardiovascular disease, the electrocardiogram was of the normal type in 223 instances. 1. 1. The electrocardiogram is often normal in those diseases, such as syphilitic aortitis, arteriosclerosis, hypertension, and pericarditis, which damage the myocardium secondarily or late in their course. 2. 2. In certain cardiovascular disorders, such as angina pectoris, the electrocardiogram may be abnormal during a crisis, but is normal in a large percentage of the cases if it is taken when the patient is free of symptoms. 3. 3. The electrocardiogram may be normal when the cardiac lesion is localized and does not involve the conduction system or the coronary arteries. This may happen in the case of tumors, abscesses, or foreign bodies. 4. 4. Cardiac abnormalities that place a burden upon both ventricles simultaneously, such as patent ductus arteriosus, arteriovenous aneurysm, aortic insufficiency plus mitral stenosis, or mitral stenosis complicated by hypertension, are less likely to modify the electrocardiogram than those that increase the work of the right or of the left ventricle alone. 5. 5. Auricular enlargement demonstrable by roentgenographic examination frequently fails to produce recognizable abnormalities of the auricular complex. 6. 6. A normal electrocardiogram is rarely obtained when high-grade cardiac failure is present, possibly because many patients with this condition have received sufficient digitalis to modify the T wave before the electrocardiogram is taken or because the associated anoxia tends to alter the T complex. 7. 7. The electrocardiogram is not infrequently normal in cases of acute pulmonary edema and in cases of cardiac asthma. It is suggested that this may be because these crises are precipitated by transient factors. We are referring here to routine electrocardiograms not taken during attacks. 8. 8. By the use of additional leads and by taking tracings during crises in those conditions in which these occur, it is probable that the number of cases of heart disease in which the electrocardiogram is normal might be considerably reduced.
  • Publisher: United States: Mosby, Inc
  • Language: English
  • Identifier: ISSN: 0002-8703
    EISSN: 1097-6744
    DOI: 10.1016/0002-8703(46)90390-0
    PMID: 21010877
  • Source: MEDLINE
    Alma/SFX Local Collection
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