Restrictive annuloplasty and coronary revascularization in ischemic mitral regurgitation results in reverse left ventricular remodeling.
BACKGROUND
Data on combined coronary artery bypass grafting (CABG) and restrictive annuloplasty in patients with ischemic cardiomyopathy are scarce, and the effect on reverse left ventricular (LV) remodeling is unknown.


RESULTS
51 patients with ischemic LV dysfunction (LV ejection fraction 31+/-8%) and severe mitral regurgitation (grade 3 to 4+) underwent CABG and restrictive annuloplasty with stringent downsizing of the mitral annulus (by 2 sizes, Physio-ring, mean size 28+/-2). Serial transthoracic echocardiographic studies were performed (before surgery and within 3 months and 1.5 years after surgery) to assess mitral regurgitation, transmitral gradient, leaflet coaptation, and left atrial and LV reverse remodeling. Clinical follow-up (New York Heart Association [NYHA] class, survival, events) was assessed at 2-year follow-up. Early operative mortality was 5.6%; at 2-year follow-up, all patients were free of endocarditis and thromboembolism, and 1 needed re-operation for recurrent mitral regurgitation; 2-year survival was 84%. NYHA class improved from 3.4+/-0.8 to 1.3+/-0.4 (P<0.01), with all patients in class I/II. Intraoperative transesophageal echo showed minimal (grade 1+) mitral regurgitation in 8 patients and none in 43, without stenosis. Leaflet coaptation was 0.8+/-0.2 cm. These values remained unchanged; all patients had no or minimal (grade 1+) mitral regurgitation at 2-year follow-up. LV end-systolic and end-diastolic dimensions decreased from 51+/-10 to 43+/-12 mm (P<0.001) and from 64+/-8 to 58+/-11 mm (P<0.001). Left atrial dimension decreased from 53+/-8 to 47+/-7 mm (P<0.001).


CONCLUSIONS
Excellent results of combined restrictive annuloplasty and CABG were obtained. Residual mitral regurgitation was absent/minimal at 2-year follow-up, associated with a significant reduction in left atrial dimension and LV reverse remodeling.
Bax
Jeroen J
JJ
Department of Cardiology, Leiden University Medical Center, Albinusdreef 2, 2333 ZA Leiden, The Netherlands. jbax@knoware.nl
Braun
Jerry
J
Somer
Soeresh T
ST
Klautz
Robert
R
Holman
Eduard R
ER
Versteegh
Michel I M
MI
Boersma
Eric
E
Schalij
Martin J
MJ
van der Wall
Ernst E
EE
Dion
Robert A
RA
D000208:Acute Disease; D000368:Aged; D001026:Coronary Artery Bypass; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D008944:Mitral Valve Insufficiency / Q000000981:diagnostic imaging / Q000209:etiology / Q000601:surgery*; D017202:Myocardial Ischemia / Q000150:complications / Q000601:surgery*; D011183:Postoperative Complications; D013318:Stroke Volume; D016896:Treatment Outcome; D014463:Ultrasonography; D020257:Ventricular Remodeling