Why the study?
Do primary ST changes aid in the diagnosis of acute myocardial infarction in patients with apical right ventricular pacing?
Do primary ST changes aid in the diagnosis of acute myocardial infarction in patients with apical right ventricular pacing?
Primary ST changes in paced beats can serve as a diagnostic aid for acute myocardial infarction in patients with apical right ventricular pacing.
ST changes may aid AMI diagnosis in RV-paced patients; hypothesis-generating case report, needs prospective validation.
In 34 out of 36 patients with apical right ventricular endocardial pacing, primary ischaemic ST alterations were observed during the early stage of acute myocardial infarction. These ST changes, indicating acute injury, were detected in the paced beats in inferior and in anterior infarct. The primary ST changes were consistent only during the early stages of acute myocardial infarction and were not detected when the electrode tip was not in the apex of the right ventricle. It is suggested that the primary ST changes should be used to diagnose acute myocardial infarction in paced patients.
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Niremberg et al. (1977) studied this question.
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