. Author manuscript; available in PMC: 2022 Apr 1.

Published in final edited form as: Comput Methods Programs Biomed. 2021 Feb 9;202:105959. doi: 10.1016/j.cmpb.2021.105959

Table 2.

Groups of heartbeats presented in the MIT-BIH database based on AAMI.

Category	Class

N	• Normal beat (N)
	• Left and right bundle branch block beats (L,R)
	• Atrial escape beat (e)
	• Nodal (junctional) escape beat (j)
S	• Atrial premature beat (A)
	• Aberrated atrial premature beat (a)
	• Nodal (junctional) premature beat (J)
	• Supraventricular premature beat (S)
V	• Premature ventricular contraction (V)
V	• Ventricular escape beat (E)
F	• Fusion of ventricular and normal beat (F)
Q	• Paced beat (/)
	• Fusion of paced and normal beat (f)
	• Unclassifiable beat (U)