Prognostic Evaluation Of Cardiac Axis, Q Waves, Low Voltage Qrs-r Waves, R/s Ratio, St-t Segment Abnormalities In Myocardial Infarction: Comparison Of The
Guide By :
Dr Manisha Mandal
Degree :
College :
MGM Medical College & LSK Hospital, Kishanganj, Bihar-855107
In the present study, several electrocardiographic parameters were studied in 48 myocardial infarction (MI) patients with 16 (33.3%), 15 (31.25%), 12 (25%) and 5 (10.42%) cases respectively suffering from anterior, inferior, anterolateral and lateral myocardial infarction, in order to determine the correlation of cardiac axis, Q waves, QRS-R voltage, R:S, ST-T abnormalities with pertinent infarction site in electrocardiogram. It was found that ST-T abnormalities and Q waves were important predictors of acute and prior MI in electrocardiogram. Strong association between pathological Q, loss of R voltage and low QRS voltage was present in prior anterior MI. Acute inferior ischemia was manifested by strong association between ST segment elevation (STE), ST segment depression (STD), T inversion (TI), R/S>1 and hyperacute T while in inferior infarction Q was correlated with low QRS voltage. Acute lateral and anterolateral ischemia was manifested by strong association between STE, STD, TI whereas the infarction was characterized by Q, low QRS in both along with loss of R voltage in the for
Myocardial infarction is one of the major health problems in the world caused by interrupted blood supply to a part of the heart leading to death of the local myocardial cells and scarring of the local myocardial tissue. Electrocardiogram is a useful tool to predict the likely anatomic location of myocardial infarctions. Through investigation of the association between cardiac axis, Q waves, QRS-R voltage, R/S ratio, ST-T abnormalities with pertinent infarction site in electrocardiogram, the study attempts to determine the possible predictive ECG parameters of different types of MI. Further comparison of the standard old criteria with the revised one will help elucidate the improvement of clinical outcomes. The revised ECG criteria for acute myocardial ischemia leading to myocardial infarction will be compared to address gender differences, age, cardiac risk factors as predictors of mortality.
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