What Are the Common Types of Myocardial Infarction in Clinical Practice?
Myocardial infarction is a common disease in the elderly, usually caused by factors such as coronary heart disease, heart disease, and arrhythmia. It can lead to sudden angina pectoris, loss of consciousness, respiratory arrest, and shock in patients. Therefore, patients with myocardial infarction must undergo cardiac resuscitation within 8 minutes; otherwise, permanent death may occur, resulting in a very high mortality rate for myocardial infarction. It can occur without any warning signs.
About 2/3 of patients have prodromal symptoms a few days before the onset of the disease. The most common symptoms are angina pectoris, followed by upper abdominal pain, chest tightness, and suffocation. Half of the angina pectoris is newly onset angina pectoris, and the other half is original angina pectoris with frequent or intensified attacks, prolonged duration, unclear inducements, poor effect of nitroglycerin, and accompanied by nausea, vomiting, sweating, tachycardia, acute cardiac insufficiency, severe arrhythmia, etc.
Common symptoms include upper abdominal congestion, discomfort, nausea, vomiting, chest tightness, suffocation, hypotension, shock, sudden palpitation, arrhythmia, stroke, infection, etc. Only suspected myocardial infarction patterns can be found during physical examination.
The dynamic evolution of ST-T lasts for a long time, often exceeding 24 hours (transient ST-T changes in myocardial ischemia often recover within a few hours). Chest pain lasts for at least half an hour and conforms to the characteristics of myocardial infarction chest pain. The changes in serum enzymes conform to the change pattern of myocardial infarction and/or the serum troponin T or I level is elevated by more than twice the normal value.
Acute right ventricular infarction can present with varying clinical manifestations depending on the severity of the lesion, whether it is alone or combined with other areas of myocardial infarction, and the time of presentation. The clinical signs of right ventricular infarction depend on the degree of necrosis in the right ventricle. Elevated jugular venous pressure and KUSSMAUL'S sign are the most accurate clinical indicators of right ventricular ischemia or necrosis.
It presents with typical clinical and electrocardiographic manifestations of myocardial infarction. There are significant dynamic changes in the P wave and/or meaningful changes in the P-R segment. Some patients have atrial or other arrhythmias.
