Radiofrequency catheter ablation of the premature ventricular contractions originating from His bundle region / 中华心血管病杂志
Chinese Journal of Cardiology
;
(12): 382-386, 2013.
Article
in Chinese
| WPRIM
| ID: wpr-261547
ABSTRACT
<p><b>OBJECTIVE</b>To explore the electrocardiogram and 3-dimensional electroanatomic mapping features and radiofrequency catheter ablation efficacy of patients with premature ventricular contractions (PVCs ) originating from His bundle region.</p><p><b>METHODS</b>Between February 2009 and February 2011, 10 consecutive patients ( 4 male, aged from 19 to 59 years) who underwent ablation for frequent PVCs originating close to His bundle region in our department were included. Electroanatomic mapping of RVOT and ASC, ablation was performed with the 7F 4-mm-tip ablation catheter.</p><p><b>RESULTS</b>Among these 10 patients with PVCs originating from His bundle region, 6 originated from the RVOT, 1 from NCC and 3 from RCC. Eight patients showed LBBB morphology,1 patient with PVCs originated from RCC and 1 patient with PVCs originated from NCC showed RBBB morphology. At the successful ablation sites, local ventricular activation v wave was detected 22-52 (32.6 ± 10.2) ms earlier than the QRS wave in the surface electrocardiogram. The distance between target and His bundle was 5.0-8.4(7.0 ± 1.1)mm. Ablation was successful in all 10 patients without complications (PVCs < 500 beats/24 h post ablation).</p><p><b>CONCLUSION</b>PVCs originating near the His bundle have similar electrocardiographic and electrophysiological characteristics for PVSc originated from the RVOT or ASC. Because of the close anatomical relationship between RVOT and ASC, it is necessary to mapping both RVOT and ASC to accurately identify the site of PVCs origin and to guild successful ablation.</p>
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
General Surgery
/
Bundle of His
/
Treatment Outcome
/
Catheter Ablation
/
Ventricular Premature Complexes
/
Methods
Type of study:
Prognostic study
Limits:
Adult
/
Female
/
Humans
/
Male
Language:
Chinese
Journal:
Chinese Journal of Cardiology
Year:
2013
Type:
Article
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