Coronary stenosis is a condition characterized by an abnormal narrowing of one or more coronary arteries, which are the blood vessels responsible for supplying oxygenated blood to the heart muscle (myocardium). This narrowing can be caused by plaque buildup inside the arteries, a process known as atherosclerosis

 

​The main cause of coronary stenosis is atherosclerosis, which is characterized by the deposition of plaque inside the coronary arteries. Plaque is made up of fats, cholesterol, calcium, and other substances. Over time, this plaque can harden, crack, or detach, causing an inflammatory reaction in the arterial wall and a gradual narrowing of the artery.

 

Risk factors that may contribute to the development of atherosclerosis and coronary stenosis include high blood pressure, smoking, diabetes, high cholesterol, obesity, lack of exercise, and stress