| Coronary atherosclerotic heart disease (CHD) is between coronary blood flow and myocardial demand imbalance caused by myocardial damage caused by coronary artery function or implement qualitative sex pathological change, also known as ischemic heart disease. Coronary heart disease is a worldwide epidemic disease, the incidence and mortality of coronary heart disease in our country is increasing, and the age of disease is younger. According to statistics, cardiovascular disease mortality has leapt to the top and CHD is one of the most common cardiovascular disease, is a serious harm to people’s physical and mental health of a kind of common disease, frequently occurring disease, which is called "the first killer to human being". The main clinical manifestations of coronary heart disease are angina, and the clinical symptoms of the patients are divided into typical angina and atypical angina. Coronary heart disease commonly used method for the diagnosis of electrocardiogram, angina pectoris electrocardiogram, electrocardiogram continuous dynamic monitoring and Doppler echocardiography figure, heart X-ray, ECG stress test, and coronary angiography, radionuclide imaging, magnetic resonance imaging and coronary artery angiography for inspection. The most basic diagnostic method was ECG, and the gold index was coronary angiography". But because by hospital conditions and technology, and not all hospitals can do coronary angiography. Therefore, to explore the electrocardiogram ST-T change diagnostic value in coronary heart disease patients with clinical characteristics and become inevitable.Objective1 to investigate the diagnostic value of typical angina, ECG ST segment depression accompanied by T wave inversion, simple ST depression and T wave inversion for angina pectoris of coronary heart disease.2 to investigate the correlation between/T wave inversion and coronary angiography in patients with typical angina pectoris ST segment depression.3 to investigate the correlation between/T wave inversion and coronary angiography in different gender ST segment depression.The aim is to provide theoretical support and evidence based medicine for the diagnosis of angina of coronary heart disease by the abnormal electrocardiogram of the basic medical units.Method:Choose 235 cases of patients with coronary heart disease angina pectoris as the study object, all patients underwent coronary angiography, examination before underwent ECG examination. According to gender, whether the combination of typical angina symptoms, there is no complication and gender grouping. Then the ECG ST/T changes and its results were statistically analyzed, and the correlation between the two were analyzed.Result:In 63 cases of normal ECG,172 cases of ECG ST/T changes,68 cases of coronary angiography negative,167 cases of coronary angiography positive. The sensitivity of ECG was 76.6%, specificity was 35.3%, and there was no significant difference between the two methods (P> 0.05).164 patients with typical angina pectoris,71 cases of atypical angina pectoris, typical symptom diagnosis sensitivity of CHD was 70.1%, specificity was 32.4%, the difference of the two kinds of inspection methods and no statistical significance (P> 0.05).Male patients with a total of 120 patients,30 cases of normal ECG, ECG ST/T change 90 cases,34 cases of coronary angiography negative and coronary angiography were positive in 86 cases and in the male patients with ECG in the diagnosis of coronary artery disease susceptibility was 80.2%, specificity was 38.2%, the difference of the two kinds of inspection methods no statistical significance (P> 0.05); ECG ST-T depression / inversion and coronary angiography positive correlation, with a correlation coefficient of 0.192, P< 0.05, showing male patients electrocardiogram ST-T depression / inverted and coronary angiography in the stenosis degree was positively correlated.Female patients with a total of 115 cases,26 cases with normal ECG, ECG ST/T change in 89 cases,34 cases of coronary angiography negative and coronary angiography were positive in 81 cases, in female patients with ECG in the diagnosis of coronary artery disease susceptibility to 72.8%, specificity was 32.4%, the difference of the two kinds of inspection methods have statistical significance (P< 0.05).Typical angina pectoris patients with abnormal ECG in 48 cases, ECG ST/T change in 116 cases,46 cases of coronary angiography negative, coronary angiography were positive in 118 cases, typical center in patients with angina pectoris electrocardiogram in diagnosis of coronary heart disease susceptibility was 75.4%, specificity was 41.3%, two kinds of inspection methods are relatively poor differences had no statistical significance (P> 0.05); egg positive change and coronary angiography positive correlation coefficient was 0.165, P< 0.05, suggesting that patients with typical angina pectoris electrocardiogram abnormalities and coronary angiography were positive.Atypical angina pectoris patients with abnormal ECG in 15 cases,56 cases with abnormal ECG, coronary angiography negative in 22 cases, coronary angiography were positive in 49 cases, atypical angina pectoris patients electrocardiogram in diagnosis of coronary heart disease susceptibility was 79.6%, specificity was 22.7%, the difference of the two kinds of inspection methods and no statistical significance (P > 0.05); ECG positive change and coronary angiography positive correlation coefficient was 0.026, P> 0.05, suggesting that suggest that atypical angina pectoris patients with ECG abnormalities and coronary angiography were positive correlation. In this group of patients without comorbidities in patients with 78 cases, including 13 cases of normal ECG,65 cases of change of ECG ST/T,34 patients with negative coronary angiography, coronary angiography was positive in 44 cases; two kinds of inspection methods and the difference is significantly (P< 0.05); sensitivity of 90.9%, specificity was 69.2%.105 cases of patients with hypertension, including 24 cases of normal ECG, ECG ST/T change were 81 cases,24 cases of coronary angiography negative, positive coronary angiography in 81 cases; difference between the two methods for examination of no statistical significance (P> 0.05); sensitivity was 81.5%, specificity was 37.5%. With 40 cases of diabetic patients, including 22 cases of normal ECG, ECG ST/T changes in 18 cases,4 cases of coronary angiography negative, positive coronary angiography 36 cases; difference between the two methods for examination of no statistical significance (P> 0.05); sensitivity was 47.2%, specificity was 13.6%. Complicated with hyperlipidemia patients,12 cases, including 4 cases of normal ECG, ECG ST/T changes in 8 cases,6 cases of coronary angiography negative and positive coronary angiography in 6 cases, the differences between the two kinds of inspection methods and no statistical significance (P> 0.05); sensitivity was 76.6%, specificity was 16.7%. The changes of ST/T in ECG were significant for diagnosis of hypertension, diabetes and hyperlipidemia..Conclusion:1. Typical angina pectoris patients electrocardiogram ST-T/T wave inversion lower and coronary angiography positive results have good correlation.2. Male patients with the central EEG showed that the ST-T depression/T upside down to the diagnosis of coronary disease, ECG ST-T lower IT upside down and the number of positive cases of coronary stenosis was positively correlated.3. The changes of ST/T in ECG were of great value for the diagnosis of hypertension, diabetes and hyperlipidemia. |
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