Electrocardiographic diagnosis of evolving acute myocardial infarction in the presence of left bundle-branch block
Article Abstract:
Analysis of one portion of electrocardiograms, the ST segment, may help identify heart attacks in patients with left bundle-branch block (LBBB), an abnormal conduction of the heart impulse between ventricles. The presence of LBBB may hide indications of a heart attack, preventing diagnosis and treatment. Researchers developed distinct electrocardiographic criteria using the data of 131 patients with LBBB, chest pain, and confirmed heart attacks. The control group consisted of 131 patients without chest pain who had stable heart disease and LBBB. The most dependable sign of a heart attack was any degree of wave abnormality in the ST segment of at least 1 millimeter. On the other hand, changes in the QRS segment of the electrocardiogram were unexpectedly not useful markers of heart attacks.
Publication Name: The New England Journal of Medicine
Subject: Health
ISSN: 0028-4793
Year: 1996
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Determinants of the use of coronary angiography and revascularization after thrombolysis for acute myocardial infarction
Article Abstract:
The use of coronary angiography or revascularization after a heart attack may depend on the patient's age and heart anatomy. Researchers analyzed the variables determining either procedure among 15,471 patients who underwent angiography and 8,973 revascularized patients. Statistical modelling revealed that younger age and the availability of procedures at the hospital mainly determined angiography utilization. The choice of revascularization was dependent on coronary anatomy, such as the nature of blocked arteries.
Publication Name: The New England Journal of Medicine
Subject: Health
ISSN: 0028-4793
Year: 1996
User Contributions:
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