CCS-SAF Symptom Score

Canadian Cardiovascular Society (CCS) Severity of Atrial Fibrillation (SAF) scale describes severity of symptoms in atrial fibrillation.

Class 0

Asymptomatic with respect to atrial fibrillation (AF)

Class 1

Symptoms of AF have minimal effect on quality of life

• Minimal or infrequent symptoms
• Single episode of AF without syncope or heart failure

Class 2

Symptoms of AF have minor effect on quality of life

• Mild awareness of symptoms in patients with persistent or permanent AF
• Rare episodes (less than a few per year) in patients with paroxysmal or intermittent AF

Class 3

Symptoms of AF have moderate effect on quality of life

• Moderate awareness of symptoms on most days with persistent or permanent AF
• More common episodes (more than every few months) or more severe symptoms, or both in patients with paroxysmal or intermittent AF

Class 4

Symptoms of AF have severe effect on quality of life

• Very unpleasant symptoms in patients with persistent or permanent AF
• Frequent or highly symptomatic episodes in patients with paroxysmal or intermittent AF
• Syncope due to AF
• Heart failure due to AF

Created by

By using this site you acknowledge that you have read, understand, and agree to be bound by our terms of use and privacy policy. All content and tools are for educational use only, are not meant to be a substitute for professional advice and should not be used for medical diagnosis and/or medical treatment.