The death of tissue because of a lack of blood flow, or gangrene, necessitating urgent medical intervention. Insufficient blood and oxygen triggers chest agony (exertional angina). Exertional angina ordinarily subsides once the patient rests. In people with intermittent claudication, the narrowed arteries while in the reduce extremities (for example, a https://www.sgvascularctr.com/types-of-treatments-for-vascular-diseases/