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Association of peak atrial longitudinal strain with atrial fibrillation recurrence in patients with chronic lung diseases following radiofrequency ablation
Author(s) -
Bai Ying,
Zhao Ying,
Li Jie,
Zhang Ying,
Bai Rong,
Du Xin,
Dong JianZeng,
He YiHua,
Ma ChangSheng
Publication year - 2018
Publication title -
internal medicine journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.596
H-Index - 70
eISSN - 1445-5994
pISSN - 1444-0903
DOI - 10.1111/imj.13768
Subject(s) - medicine , atrial fibrillation , hazard ratio , cardiology , radiofrequency ablation , confidence interval , proportional hazards model , catheter ablation , multivariate analysis , ablation
Background Strain was shown associated with atrial fibrillation (AF) recurrence after radiofrequency ablation (RFA), but data on AF patients complicated with chronic lung diseases (CLD) were rare. Aim This study was designed to evaluate the relationship of baseline atrial function with AF recurrence in these patients using speckle‐tracking echocardiography. Methods Average strain values (median: 2 days before RFA) were calculated for 87 AF patients (Mean age: 61.91 years, male: 71.26%) with CLD undergoing RFA from 2013 to 2014. Of these patients, 25 (28.74%) experienced AF recurrence during a mean follow up of 10.3 months. Results Peak right atrial longitudinal strain (R‐PALS) was associated with peak left atrial longitudinal strain (L‐PALS, Standardised β = 0.45, P < 0.001) in multivariate linear regression. Multivariate Cox regression analysis showed R‐PALS was associated with AF recurrence (hazard ratio, 0.86; 95% confidence interval (CI), 0.78–0.96, P = 0.005) in CLD. Patients with R‐PALS ≥14.69% had higher AF free rate compared with R‐PALS<14.69% using Kaplan–Meier analysis (log‐rank, P < 0.001). R‐PALS had similar C‐index compared to L‐PALS (difference: 0.03, 95%CI: −0.06–0.12, P = 0.53) and combined R‐PALS and L‐PALS (difference: 0.005, 95%CI: −0.04–0.05, P = 0.84) associated with AF recurrence in CLD. Conclusion R‐PALS, L‐PALS and combined R‐PALS and L‐PALS are important factors associated with AF recurrence following RFA in patients with CLD.