Coronary artery disease refers to the narrowing of the coronary arteries that supply blood to the heart. It is caused by a combination of genetic and lifestyle factors like smoking, diabetes, high blood pressure, and high cholesterol. Symptoms can include chest pain and shortness of breath. Diagnosis involves tests like ECG, stress testing, imaging tests, and blood work. Management includes medications like statins, beta blockers, and nitroglycerin to control symptoms and reduce risk factors. Surgical procedures like bypass surgery and angioplasty may be used to open blocked arteries. Nursing focuses on assessing for chest pain and other symptoms, monitoring vital signs, providing pain relief and activity assistance, and educating on prevention through