TY - JOUR
T1 - Low P-wave amplitude (<0.1 mV) in lead i is associated with displaced inter-atrial conduction and clinical recurrence of paroxysmal atrial fibrillation after radiofrequency catheter ablation
AU - Park, Jin Kyu
AU - Park, Junbeom
AU - Uhm, Jae Sun
AU - Joung, Boyoung
AU - Lee, Moon Hyoung
AU - Pak, Hui Nam
N1 - Publisher Copyright:
© The Author 2015.
PY - 2016/3/1
Y1 - 2016/3/1
N2 - Aims We hypothesized that P-wave amplitude in lead I is related to left atrial (LA) remodelling and inter-atrial conduction pattern, and has a predictive value for recurrence after radiofrequency catheter ablation (RFCA) among patients with paroxysmal atrial fibrillation (PAF). Methods and results A total of 525 consecutive patients with PAF (76% male, 56 ± 12 years old) who underwent RFCA were included. We compared pre-procedural sinus rhythm electrocardiograms without antiarrhythmic drug effect with LA volume (CT), LA voltage (NavX), the earliest activation site (EAS) conduction pattern of LA, and clinical recurrence rate. P-wave amplitude in lead I was significantly lower in patients with recurrence than in those that remained in sinus rhythm (P < 0.001) during 21 ± 10-month follow-up. P-wave amplitude in lead I was linearly correlated with LA voltage (β = 2.52, 95% CI 0.606-4.425, P = 0.010), LA conduction velocity (β = 1.91, 95% CI 0.941-2.876, P < 0.001), and low septal displacement of EAS (β = -1.67, 95% CI -2.352 to -0.996, P < 0.001). P-wave amplitudes <0.1 mV in lead I were independently associated with clinical recurrence of AF on multivariate Cox regression analysis (adjusted HR 2.163, 95% CI 1.307-3.581, P = 0.003). The integrated area under the curves was 0.705 (95% CI 0.655-0.755). Conclusion Low P-wave amplitude (<0.1 mV) in lead I is related to LA remodelling and displaced inter-atrial conduction pattern to low septum, and independently predicts clinical recurrence after RFCA in patients with PAF. Published on behalf of the European Society of Cardiology. All rights reserved.
AB - Aims We hypothesized that P-wave amplitude in lead I is related to left atrial (LA) remodelling and inter-atrial conduction pattern, and has a predictive value for recurrence after radiofrequency catheter ablation (RFCA) among patients with paroxysmal atrial fibrillation (PAF). Methods and results A total of 525 consecutive patients with PAF (76% male, 56 ± 12 years old) who underwent RFCA were included. We compared pre-procedural sinus rhythm electrocardiograms without antiarrhythmic drug effect with LA volume (CT), LA voltage (NavX), the earliest activation site (EAS) conduction pattern of LA, and clinical recurrence rate. P-wave amplitude in lead I was significantly lower in patients with recurrence than in those that remained in sinus rhythm (P < 0.001) during 21 ± 10-month follow-up. P-wave amplitude in lead I was linearly correlated with LA voltage (β = 2.52, 95% CI 0.606-4.425, P = 0.010), LA conduction velocity (β = 1.91, 95% CI 0.941-2.876, P < 0.001), and low septal displacement of EAS (β = -1.67, 95% CI -2.352 to -0.996, P < 0.001). P-wave amplitudes <0.1 mV in lead I were independently associated with clinical recurrence of AF on multivariate Cox regression analysis (adjusted HR 2.163, 95% CI 1.307-3.581, P = 0.003). The integrated area under the curves was 0.705 (95% CI 0.655-0.755). Conclusion Low P-wave amplitude (<0.1 mV) in lead I is related to LA remodelling and displaced inter-atrial conduction pattern to low septum, and independently predicts clinical recurrence after RFCA in patients with PAF. Published on behalf of the European Society of Cardiology. All rights reserved.
KW - Catheterablation
KW - Inter-atrial conduction
KW - P-wave
KW - Paroxysmal atrial fibrillation
KW - Recurrence
UR - http://www.scopus.com/inward/record.url?scp=84965172463&partnerID=8YFLogxK
U2 - 10.1093/europace/euv028
DO - 10.1093/europace/euv028
M3 - Article
C2 - 25969437
AN - SCOPUS:84965172463
SN - 1099-5129
VL - 18
SP - 384
EP - 391
JO - Europace
JF - Europace
IS - 3
ER -