Pulmonary vein isolation for the treatment of atrial fibrillation in patients with impaired systolic function.
OBJECTIVE
We aimed to determine the safety and efficacy of pulmonary vein isolation (PVI) in atrial fibrillation (AF) patients with impaired left ventricular (LV) systolic function.


BACKGROUND
To date, PVI has been performed primarily in patients with normal LV function. Yet, many AF patients have impaired LV systolic function. The outcomes of PVI in patients with impaired LV systolic function are unknown.


METHODS
We included 377 consecutive patients undergoing PVI between December 2000 and January 2003. Ninety-four patients had impaired LV function (ejection fraction [EF] <40%), and they comprised the study group. The control group was the remaining 283 patients who had a normal EF. End points included AF recurrence and changes in EF and quality of life (QoL).


RESULTS
Mean EF was 36% in our study group, compared with 54% in controls. After initial PVI, 73% of patients with impaired EF and 87% of patients with normal EF were free of AF recurrence at 14 +/- 6 months (p = 0.03). In the study group, there was a nonsignificant increase in EF of 4.6% and significant improvement in QoL. Complication rates were low and included a 1% risk of pulmonary vein stenosis.


CONCLUSIONS
Although the AF recurrence rate after initial PVI in impaired EF patients was higher than in normal EF subjects, nearly three-fourths of patients with impaired EF remained AF-free. Although our sample size was nonrandomized, our results suggest PVI may be a feasible therapeutic option in AF patients with impaired EF. Randomized studies with more patients and longer follow-up are warranted.
Chen
Michael S
MS
Center for Atrial Fibrillation, Department of Cardiovascular Medicine, Cleveland Clinic Foundation, 9500 Euclid Avenue, Cleveland, OH 44195, USA.
Marrouche
Nassir F
NF
Khaykin
Yaariv
Y
Gillinov
A Marc
AM
Wazni
Oussama
O
Martin
David O
DO
Rossillo
Antonio
A
Verma
Atul
A
Cummings
Jennifer
J
Erciyes
Demet
D
Saad
Eduardo
E
Bhargava
Mandeep
M
Bash
Dianna
D
Schweikert
Robert
R
Burkhardt
David
D
Williams-Andrews
Michelle
M
Perez-Lugones
Alejandro
A
Abdul-Karim
Ahmad
A
Saliba
Walid
W
Natale
Andrea
A
D001281:Atrial Fibrillation / Q000150:complications / Q000503:physiopathology / Q000601:surgery*; D006348:Cardiac Surgical Procedures / Q000379:methods; D017115:Catheter Ablation / Q000379:methods*; D015716:Electrocardiography, Ambulatory; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications; D011667:Pulmonary Veins / Q000473:pathology / Q000601:surgery*; D011788:Quality of Life; D012189:Retrospective Studies; D016896:Treatment Outcome; D014463:Ultrasonography; D018487:Ventricular Dysfunction, Left / Q000150:complications* / Q000000981:diagnostic imaging / Q000503:physiopathology