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Left ventricular response after cardiac resynchronization therapy is related to early left atrial volume reduction

 In-Jeong Cho  ;  Jae-Sun Uhm  ;  Jaewon Oh  ;  Jong-Ho Nam  ;  Hee Tae Yu  ;  Taehoon Kim  ;  Boyoung Joung  ;  Seok-Min Kang 
 KOREAN JOURNAL OF INTERNAL MEDICINE, Vol.35(5) : 1125-1135, 2020-09 
Journal Title
Issue Date
Atrial remodeling ; Cardiac resynchronization therapy ; Ventricular remodeling
Background/aims: The current study aimed to elucidate a time-course change in left atrial volume after cardiac resynchronization therapy (CRT) and to verify factors associated with left atrial volume reduction (LAVR) and its prognostic implications. Methods: The records of 97 patients were retrospectively reviewed after CRT. Echocardiographic data were analyzed at baseline before CRT, at early follow-up (FU) (≤ 1 year, median 6 months), and at late FU (median 30 months). Left ventricular volume response (LVVR) was defined as 15% reduction in left ventricular (LV) end-systolic volume (ESV). LAVR was classified into two groups by the median value at early FU: LAVR (≥ 7.5%) and no LAVR (< 7.5%). Results: LV ESV index continuously decreased from baseline to early FU and from early FU to late FU (106.1 ± 47.4 mL/m2 vs. 87.6 ± 51.6 mL/m2 vs. 72.5 ± 57.1 mL/m2). LA volume index decreased from baseline to early FU, but there were no reductions thereafter (51.8 ± 21.9 mL/m2 vs. 45.1 ± 19.6 mL/m2 vs. 44.9 ± 23.0 mL/m2). The only echocardiographic factor associated with LAVR was change in E velocity (odds ratio [OR], 1.04; p = 0.002). Early LAVR (OR, 10.05; p = 0.002) was an independent predictor for late LVVR. Conclusion: LAVR was related to reduction in E velocity, suggesting its relation with optimization of LV filling pressure. Early LAVR was a predictor for LVVR to CRT in long-term FU.
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1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
Yonsei Authors
Kang, Seok Min(강석민) ORCID logo https://orcid.org/0000-0001-9856-9227
Kim, Tae-Hoon(김태훈) ORCID logo https://orcid.org/0000-0003-4200-3456
Nam, Jong-Ho(남종호)
Uhm, Jae Sun(엄재선) ORCID logo https://orcid.org/0000-0002-1611-8172
Oh, Jae Won(오재원) ORCID logo https://orcid.org/0000-0002-4585-1488
Yu, Hee Tae(유희태) ORCID logo https://orcid.org/0000-0002-6835-4759
Joung, Bo Young(정보영) ORCID logo https://orcid.org/0000-0001-9036-7225
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