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. Author manuscript; available in PMC: 2015 Jan 1.
Published in final edited form as: Heart Rhythm. 2013 Oct 3;11(1):85–92. doi: 10.1016/j.hrthm.2013.10.007

Table 2.

LA Structural Characteristics

Total Paroxysmal AF Persistent AF P First Ablation Repeat Ablation P
Patients, n 75 42 33 43 32
LA Volume, ml 169.8±44.2 155.5±37.5 187.9±46.0 0.001 172.1±50.8 166.7±34.1 0.604
LA Volume Index, ml/m2 83.3±20.7 78.3±18.9 89.5±21.5 0.019 84.2±23.0 82.0±17.5 0.647
LA Mass, gm 22.7±9.6 20.4±8.7 25.7±10.0 0.017 21.3±7.6 24.7±11.7 0.139
LA Mass Index, gm/m2 11.1±4.3 10.2±4.2 12.1±4.3 0.060 10.4±3.6 11.9±5.2 0.141
LA Septal Wall Thickness, mm 2.08±0.35 2.12±0.36 2.03±0.32 0.240 2.05±0.36 2.11±0.33 0.460
LA Anterior Wall Thickness, mm 2.04±0.35 2.07±0.39 2.01±0.29 0.434 2.03±0.37 2.06±0.32 0.753
LA Posterior Wall Thickness, mm 2.27±0.39 2.30±0.40 2.24±0.37 0.491 2.26±0.39 2.28±0.39 0.815
Mean IIR 0.85±0.11 0.82±0.10 0.89±0.11 0.002 0.83±0.12 0.88±0.08 0.039
IIR-Septal Wall 0.83±0.17 0.79±0.10 0.88±0.22 0.020 0.79±0.13 0.89±0.21 0.018
IIR-Anterior Wall 0.84±0.12 0.80±0.12 0.90±0.10 <0.001 0.82±0.12 0.89±0.10 0.040
IIR-Posterior Wall 0.89±0.15 0.84±0.14 0.96±0.14 <0.001 0.88±0.17 0.91±0.11 0.514
IIR-PV Antrum 1.00±0.20 0.95±0.20 1.07±0.19 0.010 0.87±0.13 1.19±0.12 <0.001

LA= left atrium, AF= atrial fibrillation.