Optimized electrocardiographic criteria for prior inferior and anterior myocardial infarction
| Autor: | Robert A. Warner, Norma E. Hill |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Male
Coronary angiography medicine.medical_specialty Myocardial Infarction Anterior myocardial infarction Coronary Artery Disease Sensitivity and Specificity Coronary artery disease Electrocardiography Internal medicine medicine Humans Diagnosis Computer-Assisted cardiovascular diseases Training set Receiver operating characteristic business.industry Inferior Myocardial Infarction Reproducibility of Results Middle Aged medicine.disease Test set Cardiology Radiology Myocardial infarction diagnosis Cardiology and Cardiovascular Medicine business Algorithms |
| Zdroj: | Journal of Electrocardiology. 45:209-213 |
| ISSN: | 0022-0736 |
| DOI: | 10.1016/j.jelectrocard.2011.11.002 |
| Popis: | Background and Purpose The first purpose of the study was to optimize empirically the detection of prior inferior myocardial infarction (IMI) and prior anterior myocardial infarction (AMI) by electrocardiogram (ECG). The second purpose was to compare the diagnostic performances of the new criteria with those of 3 widely used commercial diagnostic ECG algorithms. Materials and Methods We analyzed the digital ECG data from 1138 subjects with suspected coronary artery disease in whom the presence or absence of prior IMI or AMI was documented by coronary angiography and left ventriculography. We used receiver operating characteristic curves to develop the new criteria for prior IMI and AMI using a training set of 562 subjects and then tested their diagnostic performances using a separate test set of 576 subjects. In both the training and test sets, we used χ2 test to compare the performances of the new criteria with those of 3 commercial computerized diagnostic algorithms. Results The best criterion for prior IMI was the algebraic sum of the Q and T amplitudes in leads III and aVF. Its sensitivities/specificities were 71%/98% and 74%/98% in the training and test sets, respectively. The best criterion for prior AMI was the algebraic sum of the Q, R, and T amplitudes minus the Q duration in leads V2, V3, and V4. Its sensitivities/specificities were 68%/98% and 65%/98% in the training and test sets, respectively. In both the training and test sets, these diagnostic performances were generally superior to those of the 3 commercial algorithms. Conclusions Using digital ECG data, we developed and tested new criteria for prior IMI and AMI whose diagnostic performances are generally superior to each of 3 widely used commercial ECG diagnostic algorithms. |
| Databáze: | OpenAIRE |
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