The term heart disease is often interchanged with the term cardiovascular disease. It generally refers to the conditions that involve narrowed or blocked blood vessels that can lead to a heart attack, chest pain (angina) or stroke. By controlling high blood pressure, quitting smoking, maintaining a healthy diet and by maintaining low cholesterol levels heart diseases can be prevented.
Diagnosis and symptoms include cardiac catherization, cardiac MRI, picturing the heart, a CT scan, a coronary angiography, stress testing, echocardiography, nuclear heart scan, etc. Treatment for heart valve problems include medications, heart valve surgery and for heart attack medications like clot busters should be administered as soon as possible, coronary angioplasty, coronary artery bypass graft surgery.
The coronary heart disease (CHD) mortality rates for men aged 35-44 years decreased by 25% from 1966-70 to 1976-80. In older age groups only a modest decline was observed. The decrease in CHD mortality is probably due to a decrease in incidence. The reason for the decline is not known, but some changes in health-related behaviour have occurred in Norway, probably already starting in the 1960s.