Keywords: clinical manifestations of coronary heart disease
Why coronary heart disease angina? Coronary artery disease, myocardial blood supply is reduced When emotion or heavy physical activity, more prominent contradictions of this shortage, the excessive accumulation of metabolites in the myocardium, this product afferent nerve stimulation of the heart peripheral sympathetic ganglion into the brain to produce pain, the patient felt chest pain, sometimes accompanied by cold sweats, duration generally l ~ 2 minutes or longer, but rarely more than 15 minutes. The case of some patients, the pain radiates sake, the point of the pain is not manifested in the chest, as a form of expression, but to toothache, pain in the left shoulder, back pain, upper abdominal pain and more pain in overworked, emotional or meal happen.
2, the contraction of the former
Normal adult resting heart rate per minute between 60 to 100 times, an average of 75 times. Each cardiac contraction and relaxation once called a cardiac cycle of the chest wall with a stethoscope to hear the “boom", “despair" sound. A normal heart, it’s beating is very regular. Patients with coronary heart disease, heart sometimes steal Lai performance that sudden cardiac arrest “, which is in fact the symptoms caused by contraction of the former. The contraction of the former is a heartbeat in advance on the basis of a normal heartbeat. Coronary heart disease people why this is happening heartbeat it? By hypoxic injury and electrolyte imbalance due to the patient’s cardiac tissue, cardiac conduction disorders, or due to the excited new stove.
3, slow heartbeat
Around us can often see some of coronary heart disease patients heartbeat is slow, sometimes jump 50 to 60 times per minute, some 30 to 40 times. Why is this? This is due to coronary heart disease patients in the heart of long-term hypoxic-ischemic myocardial tissue varying degrees of change, pacing, conduction system damage. Myocardial contractility in patients with coronary heart disease has declined seriously affected if the heartbeat is very slow heart blood supply to the body, the patient will feel dizziness, palpitations, shortness of breath, and some will appear syncope.
4, myocardial infarction
Incidence of myocardial infarction and angina foundation is the same, but the nature is much more serious, angina is the increase in cardiac workload, increased blood supply to the requirements of the case occurred, myocardial ischemia and hypoxia is a temporary phenomenon, a few minutes recovery, myocardial infarction myocardial ischemia caused by coronary spasm or atresia lasting damage and necrosis. Myocardial infarction mainly sudden precordial persistent severe pain, severe patients a sense of impending doom, pain lasting for hours to a few days. Cause sudden decrease in cardiac output due to myocardial infarction, myocardial contractility, and myocardial infarction patients often shock manifested as pale, sweating, decreased blood pressure, cardiac arrhythmias. Its high fatality rate, one of the most critical of the Accident and Emergency medicine.
Coronary artery completely blocked ago often will send out some warning signals, some of these warning signals issued l ~ 2 days before in the infarct infarct before l ~ 2 weeks, and some even on the issue, if we can attract enough attention appropriate treatment, will have more than half of the patients from myocardial infarction, even in the event of a myocardial infarction, symptoms and lighter, the prognosis is good.
These harbinger of what signal it?
First, the first occurrence of angina or severe angina attack within a month for the dangerous time.
Original angina pectoris often mood changes or physical fatigue inducement, but recent angina becomes or night attack in a quiet, severity, pain also expanded the scope, duration extend mouth with nitroglycerin difficult to alleviate.
Angina accompanied by nausea, vomiting, sweating, and bradycardia.
The symptoms aggravate angina associated with cardiac dysfunction symptoms or original heart dysfunction.
Fifth, the ECG shows ST segment of the moment to rise or decreased, T wave inversion or tall and arrhythmia.
Arrhythmia when the heartbeat is not control by the sinus node, but is caused by other tissue in the heart outside the sinus node, this is not normal pacemaker called ectopic pacemaker, heart rate controlled by them, for ectopic rhythm arrhythmia. Arrhythmias include: premature beats, tachycardia, atrial fibrillation.