Angina Classification Guidelines

Angina, a common symptom of coronary artery disease, can be classified into four distinct categories based on the guidelines established by the Canadian Cardiovascular Society. These classifications help healthcare professionals assess the severity of angina and guide appropriate treatment strategies.

Understanding the Four Classes of Angina

Class I: Mild Angina

Patients in Class I typically experience angina only during intense physical exertion. Daily activities such as brisk walking or climbing stairs may trigger symptoms, but overall, regular physical activity is not significantly limited.

Class II: Moderate Angina

In Class II, individuals may notice a slight limitation in their physical activity. Symptoms often occur during fast-paced walking or when climbing two flights of stairs. While not severely restricted, patients may need to slow down or take breaks during moderate exercise.

Class III: Marked Limitation of Activity

Class III angina indicates a more pronounced impact on daily life. Patients typically experience chest pain or discomfort after walking approximately 200 meters on level ground or climbing a single flight of stairs. This level of angina significantly restricts normal physical activity.

Class IV: Severe or Unstable Angina

The most severe classification, Class IV angina occurs even with minimal physical activity or while at rest. This stage is often associated with unstable angina and requires immediate medical attention due to the high risk of cardiac events.

By using this classification system, doctors can better understand the impact of angina on a patient's life and tailor treatment plans accordingly. If you or someone you know is experiencing symptoms of angina, it's essential to seek professional medical advice promptly.