Contribution of atrial activation to the segment of the typical atrial flutter wave: an electro-anatomic insight into the electrocardiogram morphology.
- Author:
Jun WANG
1
;
Minglong CHEN
1
;
Bing YANG
1
;
Weizhu JU
1
;
Fengxiang ZHANG
1
;
Gang YANG
1
;
Mingfang LI
1
;
Kejiang CAO
2
;
Email: KJCAO@NJMU.EDU.CN.
Author Information
- Publication Type:Journal Article
- MeSH: Aged; Atrial Appendage; Atrial Fibrillation; Atrial Flutter; Electrocardiography; Female; Heart Atria; physiopathology; Humans; Male; Middle Aged; Ventricular Function, Left
- From: Chinese Journal of Cardiology 2015;43(7):595-598
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo investigate how the intra-cardiac activation was translates into the characterized flutter wave in patients with cavatricuspid isthmus-dependent counter-clockwise atrial flutter (CTI-AFL).
METHODSA total of 15 hospitalized CTI-AFL patients (mean age: (60 ± 14) years old, 1 female) from October 2012 to February 2014 were enrolled in the study. The activation map was re-constructed during AFL rhythm for left atrium and right atrium using 3-dimensional mapping system. The flutter wave in surface electrocardiogram was analyzed in combination with the intra-cardiac activation.
RESULTSThe mean left ventricular ejection fraction was (60.8 ± 6.6)%, and the left atrial diameter was (39.0 ± 3.4) mm. The mean tachycardia cycle length was (220 ± 24) ms. The activation map was completed in all cases. In inferior leads, the flutter wave was divided into three parts: slowly downward part, sharp downward part and the terminal positive part. The three parts corresponded to the fixed activation part of the macro-reentry.
CONCLUSIONThe distinctive flutter wave of CTI-AFL was determined by the unique macro-reentry activation in the right atrium. The activation of left atrium contributes to the downward part of the wave.
