Evaluating Symptoms to Improve Quality of Life in Patients with Chronic Stable Angina
Table 1
Canadian Cardiovascular Society Classification of angina according to impact on physical activity.
Level
Impact of physical activity on occurrence of angina
Class I
Ordinary physical activity, such as walking or climbing stairs, does not cause angina Angina occurs with strenuous, rapid, or prolonged exertion at work or recreation
Class II
Slight limitation of ordinary activity Angina occurs on walking or climbing stairs rapidly, walking uphill, walking or stair-climbing after meals, in cold, in wind, under emotional stress, or only during the first few hours of awakening Angina occurs on walking more than two blocks on the level and climbing more than one flight of ordinary stairs at a normal pace and in normal conditions
Class III
Marked limitations of ordinary physical activity Angina occurs on walking one to two blocks on the level and climbing one flight of stairs in normal conditions and at a normal pace
Class IV
Inability to carry out any physical activity without discomfort Anginal symptoms may be present at rest
