Biochemical profile and prognosis of patients with heart failure and diabetes

Abstract

Aim. To study clinical and hemodynamic and laboratory parameters for the 2-year prognosis of patients with chronic heart failure (CHF) and type 2 diabetes mellitus (DM).Material and methods. The study included 90 patients (61,4±8,6 years old) with NYHA class II-IV CHF related to coronary artery disease and hypertension. All patients underwent clinical examination, resting 12-lead electrocardiography, transthoracic echocardiography, and blood chemistry testing. Two-year follow-up was conducted to determine the prognosis of patients with CHF and DM.Results. CHF duration in patients with DM was 17% more, despite a comparable average age of patients. Echocardiography showed significant left ventricular dilatation and, as a result, systolic dysfunction in patients of the I group (with DM). Hypoalbuminemia was detected in both groups, but it was more pronounced in patients with CHF and DM. With comparable average creatinine concentrations, patients with CHF and DM had higher blood urea levels (13,2±2,1 µmol/L and 9,4±2,6 µmol/L, respectively). Patients of group I had significantly lower glomerular filtration rate (GFR) compared to the comparison group (by 13%). In group I, there were 42 rehospitalizations during the follow-up period, while in the comparison group — 29. Acute cerebrovascular accident was recorded in 7% and 4% of cases, respectively. Myocardial infarction (MI), including recurrent MI, was registered 50% more often in patients with DM. The mortality rate in patients of the group I was 3,5 times higher than in the comparison group.Conclusion. Features of the course of CHF depending on the presence of concomitant type 2 DM were revealed. These include the relatively early manifestation of CHF symptoms, the prevalence of patients with moderate to severe CHF and severe left ventricular systolic dysfunction. The results of a biochemical study of the blood of group I patients were characterized by hypoalbuminemia, hypertriglyceridemia, and a significant decrease in GFR. It is noted that the presence of concomitant DM aggravates the course of CHF of ischemic and nonischemic genesis, which is manifested by an increase in the frequency of repeated hospitalizations and deaths during 2-year follow-up. 87

Keywords

• heart failure
• diabetes
• biochemical parameters
• prognosis