The Pulmonary Circulation Peculiarities in Young and Middle-Aged Men With Myocardial Infarction and Recurrent Episodes of Ischemia

Abstract

Relevance. The pulmonary hypertension (PH) and heart failure (HF) development during myocardial infarction (MI) in men with recurrent ischemic events (RIE) has not been adequately studied. Aim. To evaluate changes in pulmonary circulation parameters (PCP) in men under 60 years old (y.o.) in acute and subacute MI periods with RIS to improve understanding of PH and HF developmental options and to search for possible ways to improve prevention. Material and methods. The study included men aged 19-60 years old with type I of MI. Patients are divided into two age-comparable groups: I - the study group, with RIS - 110 patients; II - control, without it - 555 patients. A comparative assessment of PCP in the first 48 hours and the end of the subacute period of MI in these groups was performed. Results. In the first hours of MI the higher values of total pulmonary resistance (TPR) and mean pulmonary artery pressure (MPAP) were noted in the study group. When considering their dynamics at the end of the third MI week the MPAP decreased in both groups (I: by 8.7%; p˂0.0001; II: by 15.0%; p˂0.0001). TPR decreased in both groups (I: by 30.6%; II: by 29.6%; p˂0.0001) too. The heart rate - I: by 6.2%; p=0.03; II: 8.4%; p˂0.0001). At the end of the third MI week, MPAP remained elevated in the study group (I: 30.6 ± 12.7; II: 27.2 ± 7.7; p = 0.03).