Volumetric-myocardial indices for predicting the course of the early postoperative period in patients with ischemic cardiomyopathy

• Shelkovnikova T.A.
• Andreev S.L.
• Zavadovskiy K.V.
• Maksimova A.S.
• Usov V.Yu.

Abstract

Background. The number of published studies exploring risk factors for the development of early postoperative complications predicted based on the findings of magnetic resonance imaging in patients with left ventricular dysfunction is limited.

Objective. Our study was aimed at searching for predictors of a complicated course of the postoperative period in patients with ischemic cardiomyopathy.

Patients and methods. In a total of 44 patients prior to comprehensive surgical treatment of ischemic cardiomyopathy, we analyzed volumetric and linear parameters of the left ventricular myocardium by means of contrast-enhanced cardiac magnetic resonance imaging. For prognostic purposes, we proposed volumetric-myocardial indices: the ratio of the end-diastolic volume to the viable myocardium mass (DVM) and the ratio of the end-systolic volume to the viable myocardium mass (SVM).

Results. It was found that the ratio of the end-systolic volume to the viable myocardium mass was the only independent risk factor for the development of postoperative complications and that an increase of the SVM index by one unit increased the risk of developing complications in the early postoperative period 6.68-fold.

Conclusion. The assessment of the proposed index at the preoperative stage may contribute to optimization of selection of patients for surgery.

Keywords:contrast-enhanced cardiac MRI; ischemic cardiomyopathy; coronary artery bypass grafting, surgical reconstruction of the left ventricle; prediction of complications

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