ANALYSIS OF LEFT VENTRICULAR EJECTION FRACTION AS A PREDICTOR OF DEVELOPMENT OF HEART FAILURE AND RISK STRATIFICATION OF CORONARY BYPASS
DOI:
https://doi.org/10.32689/2663-0672-2024-4-6Keywords:
aortocoronary bypass, left ventricular ejection fraction, dynamics of changes in myocardial contractility, patients of different agesAbstract
In this article, the scientific problem is confined to the study of the values of the left ventricular ejection fraction in patients of different age groups in order to establish the effectiveness of surgical treatment and prevent the progression of heart failure. A detailed review of modern scientific research was carried out to study the available world experience of the influence of the preserved contractile capacity of the myocardium on the development of chronic heart failure. Aim. The purpose of the work is to study the values of the left ventricular ejection fraction in the dynamics of the perioperative period of coronary artery bypass grafting in patients of different age groups with coronary heart disease. Scientific novelty. For the first time, the values of the left ventricular ejection fraction were studied on a large sample of patients with coronary heart disease of different age groups in the dynamics of surgical treatment. Materials and methods. The study included patients with coronary heart disease of different ages (n=3672), the average age of the study participants was 60.6±0.8 years. All patients of this sample underwent coronary bypass surgery on a working heart, and risk stratification was determined for the timeliness of its implementation. Conclusions. Studying the values of the left ventricular ejection fraction in the dynamics of recovery after coronary artery bypass grafting in patients with coronary heart disease of different age groups is important, as it allows to objectively assess the effectiveness of surgical treatment and directly affects life expectancy. It was found that in all age groups, the left ventricular ejection fraction had an increase after coronary artery bypass grafting, which averaged 3.63% and was the highest in middle-aged patients (group #2). It was determined that the left ventricular ejection fraction in the dynamics from hospitalization to the 30-day period after coronary artery bypass grafting was significantly higher in the largest study group – middle-aged patients (р=0.052, χ2=3.77), which directly indicates the timeliness and the effectiveness of its implementation.
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