Distribution of mean cycle length in cavo-tricuspid isthmus dependent atrial flutter

Title:

Distribution of mean cycle length in cavo-tricuspid isthmus dependent atrial flutter

Creator:

Štěpán Havránek, Jan Šimek, Petr Šťovíček, and Dan Wichterle

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:cf885d2c-811e-4bad-b1b8-6b7219c5119f
uuid:cf885d2c-811e-4bad-b1b8-6b7219c5119f

Subject:

Fyziologie člověka a srovnávací fyziologie, fyziologie člověka, human physiology, arrhythmia cycle length, cavo-tricuspid isthmus-dependent atrial flutter, catheter ablation, 14, and 612

Type:

article, články, model:article, and TEXT

Description:

Although cycle length (CL) constitutes a fundamental descriptor of any arrhythmia, there is not larger study describing mean CL in electrophysiologically confirmed cavo-tricuspid isthmus (CTI)- dependent atrial flutter (AFL). We analyzed retrospectively digital recordings of 121 patients (98 men; age 64±11 years) referred for radiofrequency ablation of persistent CTI-dependent AFL. Median of mean AFL CL was 240 ms (interquartile range (IQR) of 222-258 ms, overall range of 178-399 ms). The distribution of CL was not normal (Shapiro Wilk test, p<0.001). Both counterclockwise and clockwise (14.9 % of all cases) AFLs were comparable in their CL; 240 (IQR 222-258) ms vs. 234 (217-253) ms, respectively. AFL CL<200 ms and AFL CL<190 ms was noticed in 5 (4.1 %) and 3 cases (2.5 %), respectively. In multivariate regression analysis, age (increase by 6±3 ms per decade of age, p=0.036), treatment with specific antiarrhythmic drugs (increase by 11±6 ms, p=0.052) and the history of cardiac surgery (increase by 26±9 ms, p=0.004) were independently associated with AFL CL. In conclusions, the distribution of AFL CL is not normal. The prevalence of AFL with short CL is low. Short CL<200 ms does not rule out the CTI-dependent AFL, especially in young and otherwise healthy patients., Š. Havránek ... [et al.]., and Obsahuje seznam literatury

Language:

English

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Source:

Physiological research | 2012 Volume:61 | Number:1

Harvested from:

CDK

Metadata only:

false