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Pacing Clin Electrophysiol. 2019 Mar;42(3):327-332. doi: 10.1111/pace.13602. Epub 2019 Jan 22.

Atrial electromechanical delay assessment in early phase after catheter ablation for patients with atrial fibrillation.

Author information

1
Department of Cardiology, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, China.
2
Jiangsu Province Academy of Traditional Chinese Medicine, Nanjing, China.
3
Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
4
Department of Cardiology, Shanghai Tenth People's Hospital, Shanghai, China.
5
Department of Cardiology, Geriatrics, The First Affiliate Hospital of Nanjing Medical University, Nanjing, China.

Abstract

BACKGROUND:

Variation of atrial electromechanical delay (AED) in early phase after catheter ablation in patients with atrial fibrillation (AF) is lacking.

METHODS:

Fifty-five consecutive patients restored sinus rhythm after ablation was included. Echocardiography was performed at 4 h, 1 day, and 3 days after radiofrequency catheter ablation, and AED was measured simultaneously by echocardiography with pulse Doppler imaging and pulse wave tissue Doppler imaging.

RESULTS:

AED parameters were significantly longer in the nonparoxysmal atrial fibrillation (NPAF) group than in the paroxysmal atrial fibrillation (PAF) group at each checking point after ablation (P < 0.05). Compared with other checking points, AED parameters were significantly longer 4 h postablation in the NPAF group, while no significant difference was found between different checking points in the PAF group. AED-leap, representing the variation of AED in NPAF patients, was significantly positively correlated with the duration of NPAF (r = 0.5291, P = 0.0113).

CONCLUSIONS:

Compared with PAF, NPAF patients have a longer AED postablation, and an abrupt decrease in the initial-h postablation. Such phenomenon gives rise to the different clinical features of PAF and NPAF, and could guide different assessment and treatment strategies for different types of AF.

KEYWORDS:

ablation; atrial electromechanical delay; atrial fibrillation; echocardiography

PMID:
30632635
DOI:
10.1111/pace.13602

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