What is the cause of persistent angina pectoris?

We know that good health is the most important thing for us, but there will definitely be some major diseases in life that will seriously affect our lives, and these major diseases are all about the most important organ in our body, the heart. We all know that angina pectoris is a very serious disease, but persistent angina pectoris means there is a problem with the heart and it must be treated promptly. A bad heart can endanger life. We need to understand the cause. What is the cause of persistent angina pectoris? Let’s find out!

Causes of angina include:

① Coronary artery atherosclerosis causes fixed stenosis of the lumen (usually more than 75%).

②Coronary artery spasm, such as variant angina pectoris.

③Other coronary artery lesions: such as inflammation, embolism or congenital malformations.

④ Non-coronary artery diseases: such as aortic valve stenosis or aortic insufficiency, syphilitic aortitis, severe anemia, hyperthyroidism, and chronic tachycardia.

⑤Low blood pressure, increased blood viscosity or slow blood flow.

⑥ Hypertrophic cardiomyopathy, mitral valve prolapse, etc. Among them, the most important is coronary heart disease, namely coronary artery atherosclerosis stenosis and (or) coronary artery spasm.

Angina pectoris is the consequence of myocardial ischemia, which is caused by the imbalance between myocardial oxygen demand and supply. Increasing heart rate, left ventricular wall tension and contractility can increase oxygen demand; coronary blood flow and its oxygen content determine the myocardial oxygen supply.

1. Increased myocardial oxygen demand causes angina pectoris. The oxygen supply is relatively constant, and increased myocardial oxygen demand can cause angina pectoris. This situation is called increased myocardial oxygen demand angina pectoris. Increased myocardial oxygen demand is usually caused by the release of norepinephrine from sympathetic nerve endings, which is a physiological response to fatigue, emotional excitement or mental stress. When engaging in various activities, the speed of increase in myocardial oxygen demand is of great significance. Hasty actions and exercises that involve raising the hands above the head are particularly likely to induce angina pectoris. The effect of emotional excitement on the ratio of oxygen supply to oxygen consumption is complex. Emotional tension increases sympathetic nerve tension, reduces vagal nerve activity, and increases blood pressure at the same time. Anger can cause previously narrowed coronary arteries to contract, but it does not necessarily affect oxygen consumption. Factors such as exercising after a meal and increased metabolic needs caused by chills, fever, hyperthyroidism, and tachycardia due to various reasons can also increase myocardial oxygen demand.

To sum up, these are the causes of persistent angina pectoris. Inflammation in the body, excessive stress, or anemia can all cause persistent angina pectoris. Therefore, we need to pay attention to our lifestyle habits and avoid excessive exercise, which can easily lead to excessive fatigue, myocardial infarction, and persistent angina pectoris. Therefore, only healthy living habits can make us have a healthy body.