Influence of concomitant chronic obstructive pulmonary disease on left ventricular-arterial interaction in patients with ischemic cardiomyopathy

Abstract

Aim. To assess the influence of concomitant chronic obstructive pulmonary disease (COPD) on the parameters of left ventricular-arterial interaction in patients with ischemic cardiomyopathy (ICMP).Material and methods. We examined 130 patients with ICMP and 42 patients with ICMP and COPD. All patients underwent transthoracic echocardiography using the MyLab 70 (Italy) according standard method, followed by calculation of the left ventricular-arterial interaction and left ventricular (LV) energy. Statistical data processing was performed using the program “Statistica 12.0” (Stat Soft, Inc., USA).Results. We found that patients with isolated ICMP and in combination with COPD often have a functional imbalance between the activity of LV and arterial system, as evidenced by an increase in the left ventricular-arterial interaction ratio. The increase in the left ventricular-arterial interaction ratio is due to an insufficient increase in left ventricular stiffness, but not a change in the elastic properties of the arterial system. This is indicated by a pronounced decrease in left ventricular elasticity against the background of the relative constancy of arterial elasticity. At the same time, in patients with ICMP and COPD we detected significantly more severe impairment in the parameters of left ventricular-arterial interaction and LV energy than in isolated pathology.Conclusion. The presence of COPD in patients with ICMP allows us to consider it as a significant negatively modifying factor that has a negative impact on the functionality of LV and parameters of left ventricular-arterial interaction.