Changes, mainly seen in various premature beats but shift over time, these symptoms can disappear and have a dynamic change in obstruction. The aortic stenosis is fixed and the symptoms are persistent. The ECG showed major left ventricular hypertrophy. (2) Endocardial myocardial infarction. There are typical clinical symptoms and changes in myocardial enzymology. (3) Hypertension coronary heart disease. Most of TV3 is erect, T wave is not inverted, and it can be improved with the improvement of coronary blood supply. (4) Cerebrovascular accident. In addition to brain trauma, the heart rate is slow, the T wave is deep and wide, and the sputum is prolonged. (5) Others. There may be a large inverted T wave after supraventricular tachycardia or ventricular tachycardia cardioversion, which usually lasts only a few hours or weeks.
3.3 The huge inverted T wave generation may be due to the relative decrease of myocardial sympathetic nerve activity in the interventricular septum, and the increase of nerve fibers and catecholamines in the myocardium. The hypertrophic myocardium is disordered from the epicardium to the epicardial surface, and the action potential duration is prolonged, which is the electrophysiological basis for generating a huge inverted T wave. STT abnormality in hypertrophic cardiomyopathy is the most common ECG change in the disease, the detection rate is 60%~84%, but the incidence and clinical characteristics are not consistent. The T wave of 2 cases of cardiomyopathy changed after 5 years. Symptoms, the degree of T wave inversion was positively correlated with echocardiographic findings, but not with left ventricular QRS voltage. This is due to the asymmetry of the left ventricle and interventricular septum, hypertrophic systolic function, diastolic function is significantly reduced, resulting in voltage imbalance, the left chest lead R wave is not up to standard, if the sum of V3 ~ V6R waves is greater than 65mV, the positive rate Up to 80%. The main target cells for hypertension and IHSS damage are the left ventricle and ventricular septum, and the mirror response causes the right ventricular lead aVRViT wave to stand upright. In addition to the lead V2T wave indefinite, the other leads are deeply inverted, and the V3~V6R waves are mainly upward, accumulating the R wave teeth. 65mV is a condition for the diagnosis of hypertension IHSS. This group of patients is limited and needs further confirmation by medical researchers. The ECG is cheap and convenient, so it is very suitable for IHSS initial diagnosis or high-risk population screening, but the final identification still requires echocardiography. It is generally believed that hypertension IHSS is closely related to blood pressure, and controlling blood pressure is important for delaying the development of cardiomyopathy and reducing heart failure.
Smart Downlight,Wifi Smart Light Bulb,Led Smart Emergency Bulb,Smart Emergency Bulb
JIANGMEN MOSCOT OPTOELECTRONIC TECHNOLOGY CO.,LTD. , https://www.sensorsled.com