Classification of Left Atrial Diseased Tissue Burden Determined by Automated Voltage Analysis Predicts Outcomes after Ablation for Atrial Fibrillation

Table 1

Classification of Dense Left Atrial (LA) Scar (Classes I-IV) and Diseased LA Tissue (Dublin Classes I-IV), where percentages show the extent of the LA low voltage areas (≤0.2 and ≤0.5 mV, respectively).

Dense LA Scar (≤0.2 mV)		Diseased LA Tissue (≤0.5 mV)
Class I	<1%	Dublin Class I	<9%
Class II	1%–3%	Dublin Class II	9%–18%
Class III	3%–8%	Dublin Class III	18%–31%
Class IV	>8%	Dublin Class IV	>31%

LA: left atrium.