The mEHRA classification of atrial fibrillation, also known as the modified European Heart Rhythm Association (mEHRA) score, is a clinical calculator used specifically for patients with atrial fibrillation. This scoring system is used to categorize the severity of symptoms in patients with atrial fibrillation, ranging from no symptoms to disabling symptoms. 

The mEHRA score is clinically useful in guiding treatment decisions and assessing the impact of interventions on symptom severity. It can also be used to monitor the progression of the disease over time. 

There are no specific exclusion criteria for the use of the mEHRA score. However, it is important to note that this score is subjective and relies on patient-reported symptoms, so it may not be as accurate in patients who have difficulty communicating their symptoms.

mEHRA classification of atrial fibrillation

# Criteria
 ## Symptoms
A. No symptoms
B. No impact on daily activity, symptoms not troublesome
C. No impact on daily activity, but troublesome symptoms
D. Impact on daily activity
E. Discontinuation of daily activity

# Conditions
- A
- B
- C
- D
- E
- true