Format

Send to

Choose Destination
J Am Soc Echocardiogr. 2015 Apr;28(4):455-62. doi: 10.1016/j.echo.2015.01.009. Epub 2015 Feb 9.

Mitral valve geometry changes in patients with aortic regurgitation.

Author information

1
Heart Lung Center Leiden, Leiden University Medical Center, Leiden, The Netherlands.
2
Heart Lung Center Leiden, Leiden University Medical Center, Leiden, The Netherlands. Electronic address: v.delgado@lumc.nl.

Abstract

BACKGROUND:

Changes in mitral valve geometry in patients with significant aortic regurgitation (AR) have not been evaluated. The aim of the present study was to assess the prevalence of significant secondary mitral regurgitation (MR; grade ≥ 2) and the geometric characteristics of the mitral valve in patients with moderate and severe AR (grade ≥ 2) undergoing aortic valve and root surgery.

METHODS:

One-hundred twenty patients (mean age, 54 ± 15 years; 65% men) with AR grade ≥ 2 undergoing aortic valve and root surgery were retrospectively evaluated. The presence of MR grade ≥ 2 and geometry of the mitral valve were assessed on preoperative transthoracic echocardiography. Left ventricular (LV) dimensions and mitral valve geometry were compared between patients with MR grade ≥ 2 and patients without.

RESULTS:

MR grade ≥ 2 was present in 28 patients (23%). Patients with MR grade ≥ 2 had higher European System for Cardiac Operative Risk Evaluation II scores and more often used β-blockers and diuretics than their counterparts. Patients with MR grade ≥ 2 had larger tenting areas (mean, 1.59 ± 0.79 vs 1.25 ± 0.41 cm(2); P = .003), larger inter-papillary muscle distances (mean, 28.4 ± 9.5 vs 24.8 ± 5.2 mm; P = .014), larger left atria (mean, 40.9 ± 13.7 vs 32.0 ± 12.2 mL/m(2); P = .002), and lower LV ejection fractions (mean, 47.3 ± 12.2% vs 54.3 ± 9.3%; P = .002) as compared to patients with MR grade < 2. However, there were no differences in indexed LV volumes. On multivariate logistic regression analysis, LV ejection fraction (odds ratio, 0.94; 95% confidence interval, 0.89-0.99; P = .018) and indexed left atrial volume (odds ratio, 1.05; 95% confidence interval, 1.01-1.10; P = .019) remained independently associated with MR grade ≥ 2 after correcting for tenting area and inter-papillary muscle distance.

CONCLUSIONS:

Among patients with AR grade ≥ 2 undergoing aortic valve and root surgery, the prevalence of MR grade ≥ 2 was 23%. Lower LV ejection fraction and larger left atrial volume were independently associated with MR grade ≥ 2.

KEYWORDS:

Aortic valve disease; Mitral regurgitation; Transthoracic echocardiography

PMID:
25678410
DOI:
10.1016/j.echo.2015.01.009
[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Elsevier Science
Loading ...
Support Center