MRI of Right Atrial Function after Catheter Ablation of Atrial Flutter

M Ozgun; Paulus Kirchhof; AC Bunck; W Heindel; L Eckardt; D Maintz

doi:10.1016/j.acra.2010.03.015

MRI of Right Atrial Function after Catheter Ablation of Atrial Flutter

M Ozgun, Paulus Kirchhof, AC Bunck, W Heindel, L Eckardt, D Maintz

Cardiovascular Sciences

Research output: Contribution to journal › Article

2 Citations (Scopus)

Abstract

Rationale and Objectives: Catheter ablation of the cavotricuspid isthmus (CTI) is an effective treatment of right atrial flutter. The objective of this study was to evaluate the changes in CTI length and right atrial (RA) function after radiofrequency ablation of isthmus-dependent atrial flutter (isthmus ablation). Materials and Methods: Magnetic resonance imaging was obtained in 14 patients (2 female, mean age 59 +/- 9) before and after isthmus ablation (mean delay 80 +/- 175 days) using steady-state free precession cine magnetic resonance imaging in right anterior oblique view orientation. Right atrial function (maximum/minimum right atrial volumes, stroke volume, ejection fraction) and maximum/minimum length of the CTI were measured. Results: After isthmus ablation, maximum IRA volume decreased by 13% (P=.02) and minimum RA volume by 22% (P=.01), whereas stroke volume and ejection fraction did not increase significantly (P=.4 and .2, respectively). After ablation, the maximum length of the CTI showed a significant decrease of 19% (P

Original language	English
Pages (from-to)	856-861
Number of pages	6
Journal	Academic Radiology
Volume	17
Issue number	7
DOIs	https://doi.org/10.1016/j.acra.2010.03.015
Publication status	Published - 1 Jul 2010

Keywords

Cardiac MRI
isthmus
right atrium
atrial flutter

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10.1016/j.acra.2010.03.015

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@article{37d0db4c3475471e9cd456fc78c44579,

title = "MRI of Right Atrial Function after Catheter Ablation of Atrial Flutter",

abstract = "Rationale and Objectives: Catheter ablation of the cavotricuspid isthmus (CTI) is an effective treatment of right atrial flutter. The objective of this study was to evaluate the changes in CTI length and right atrial (RA) function after radiofrequency ablation of isthmus-dependent atrial flutter (isthmus ablation). Materials and Methods: Magnetic resonance imaging was obtained in 14 patients (2 female, mean age 59 +/- 9) before and after isthmus ablation (mean delay 80 +/- 175 days) using steady-state free precession cine magnetic resonance imaging in right anterior oblique view orientation. Right atrial function (maximum/minimum right atrial volumes, stroke volume, ejection fraction) and maximum/minimum length of the CTI were measured. Results: After isthmus ablation, maximum IRA volume decreased by 13% (P=.02) and minimum RA volume by 22% (P=.01), whereas stroke volume and ejection fraction did not increase significantly (P=.4 and .2, respectively). After ablation, the maximum length of the CTI showed a significant decrease of 19% (P",

keywords = "Cardiac MRI, isthmus, right atrium, atrial flutter",

author = "M Ozgun and Paulus Kirchhof and AC Bunck and W Heindel and L Eckardt and D Maintz",

year = "2010",

month = jul,

day = "1",

doi = "10.1016/j.acra.2010.03.015",

language = "English",

volume = "17",

pages = "856--861",

journal = "Academic Radiology",

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T1 - MRI of Right Atrial Function after Catheter Ablation of Atrial Flutter

AU - Ozgun, M

AU - Kirchhof, Paulus

AU - Bunck, AC

AU - Heindel, W

AU - Eckardt, L

AU - Maintz, D

PY - 2010/7/1

Y1 - 2010/7/1

N2 - Rationale and Objectives: Catheter ablation of the cavotricuspid isthmus (CTI) is an effective treatment of right atrial flutter. The objective of this study was to evaluate the changes in CTI length and right atrial (RA) function after radiofrequency ablation of isthmus-dependent atrial flutter (isthmus ablation). Materials and Methods: Magnetic resonance imaging was obtained in 14 patients (2 female, mean age 59 +/- 9) before and after isthmus ablation (mean delay 80 +/- 175 days) using steady-state free precession cine magnetic resonance imaging in right anterior oblique view orientation. Right atrial function (maximum/minimum right atrial volumes, stroke volume, ejection fraction) and maximum/minimum length of the CTI were measured. Results: After isthmus ablation, maximum IRA volume decreased by 13% (P=.02) and minimum RA volume by 22% (P=.01), whereas stroke volume and ejection fraction did not increase significantly (P=.4 and .2, respectively). After ablation, the maximum length of the CTI showed a significant decrease of 19% (P

AB - Rationale and Objectives: Catheter ablation of the cavotricuspid isthmus (CTI) is an effective treatment of right atrial flutter. The objective of this study was to evaluate the changes in CTI length and right atrial (RA) function after radiofrequency ablation of isthmus-dependent atrial flutter (isthmus ablation). Materials and Methods: Magnetic resonance imaging was obtained in 14 patients (2 female, mean age 59 +/- 9) before and after isthmus ablation (mean delay 80 +/- 175 days) using steady-state free precession cine magnetic resonance imaging in right anterior oblique view orientation. Right atrial function (maximum/minimum right atrial volumes, stroke volume, ejection fraction) and maximum/minimum length of the CTI were measured. Results: After isthmus ablation, maximum IRA volume decreased by 13% (P=.02) and minimum RA volume by 22% (P=.01), whereas stroke volume and ejection fraction did not increase significantly (P=.4 and .2, respectively). After ablation, the maximum length of the CTI showed a significant decrease of 19% (P

KW - Cardiac MRI

KW - isthmus

KW - right atrium

KW - atrial flutter

U2 - 10.1016/j.acra.2010.03.015

DO - 10.1016/j.acra.2010.03.015

M3 - Article

C2 - 20471870

VL - 17

SP - 856

EP - 861

JO - Academic Radiology

JF - Academic Radiology

IS - 7

ER -

MRI of Right Atrial Function after Catheter Ablation of Atrial Flutter

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Keywords

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