Write a note on Angina-Pectoris.

Answer: Angina pectoris is acute chest pain that occurs when the heart muscle does not get enough oxygen.

• Cause: narrowing of the coronary arteries (usually by atherosclerosis) reduces blood flow to the myocardium, especially during exertion or emotional stress.
• Symptoms: pain or pressure in the centre of the chest that may spread to the left shoulder, arm, neck or jaw; breathlessness and sweating. It is more common in middle-aged and elderly people.
• The pain usually lasts a few minutes and is relieved by rest or by vasodilator drugs such as nitroglycerine (sorbitrate). Lifestyle control (no smoking, healthy diet, exercise) helps prevent it.