Interatrial block and interatrial septal thickness in patients with paroxysmal atrial fibrillation undergoing catheter ablation: Long‐term follow‐up study
| Autor: | Christopher S. Simpson, Hoshiar Abdollah, Raveen S. Pal, Adrian Baranchuk, Enes Elvin Gul, Usama Boles, Jane Caldwell, Damian P. Redfearn, Wilma M. Hopman, Benedict Glover, Kevin A. Michael |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Male
medicine.medical_specialty Long term follow up medicine.medical_treatment Catheter ablation 030204 cardiovascular system & hematology Time 03 medical and health sciences Electrocardiography 0302 clinical medicine Physiology (medical) Internal medicine Atrial Fibrillation medicine Humans In patient Body Weights and Measures Interatrial Block 030212 general & internal medicine Heart Atria Coronary sinus Retrospective Studies Atrial Septum business.industry Atrial fibrillation General Medicine Original Articles Middle Aged medicine.disease Ablation medicine.anatomical_structure Cardiology Catheter Ablation Female Cardiology and Cardiovascular Medicine business Tomography X-Ray Computed Interatrial septum Follow-Up Studies |
| Popis: | Background Interatrial block (IAB) is a strong predictor of recurrence of atrial fibrillation (AF). IAB is a conduction delay through the Bachman region, which is located in the upper region of the interatrial space. During IAB, the impulse travels from the right atrium to the interatrial septum (IAS) and coronary sinus to finally reach the left atrium in a caudocranial direction. No relation between the presence of IAB and IAS thickness has been established yet. Objective To determine whether a correlation exists between the degree of IAB and the thickness of the IAS and to determine whether IAS thickness predicts AF recurrence. Methods Sixty-two patients with diagnosis of paroxysmal AF undergoing catheter ablation were enrolled. IAB was defined as P-wave duration ≥120 ms. IAS thickness was measured by cardiac computed tomography. Results Among 62 patients with paroxysmal AF, 45 patients (72%) were diagnosed with IAB. Advanced IAB was diagnosed in 24 patients (39%). Forty-seven patients were male. During a mean follow-up period of 49.8 ± 22 months (range 12–60 months), 32 patients (51%) developed AF recurrence. IAS thickness was similar in patients with and without IAB (4.5 ± 2.0 mm vs. 4.0 ± 1.4 mm; p = .45) and did not predict AF. Left atrial size was significantly enlarged in patients with IAB (40.9 ± 5.7 mm vs. 37.2 ± 4.0 mm; p = .03). Advanced IAB predicted AF recurrence after the ablation (OR: 3.34, CI: 1.12–9.93; p = .03). Conclusions IAS thickness was not significantly correlated to IAB and did not predict AF recurrence. IAB as previously demonstrated was an independent predictor of AF recurrence. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|