Objective: to assess whether multislice computed tomography (MSCT) of the lung can be used to diagnose the early manifestations of heart failure in patients with coronary heart disease (CHD) during minimally invasive surgical interventions.Material and methods. Lung MSCT was performed in 54 patientsaged 43 to 89 years with CHD before and after interventions. The identified group included 24 patients who had undergone coronary stenting, 26 who had cardiac pacemaker implantation, and 4 patients who had conduction pathways ablation. Left ventricular failure was assessed by hemodynamic disorders in the pulmonary circulation, by taking into account the use of known pathophysiological data. Successive lung MSCT examinations were performed before and after minimally invasive surgical interventions, by recording local densitometric changes in the lung parenchyma.Results. A procedure was proposed to objectively assess comparable ling MSCT images in the same patient in the special imaging window. The density of the lung parenchyma reduced by more than 10 Hounsfield units in 24 patients in the next periods after surgery, which was regarded as a sign of better left ventricular pumping function. Conclusion. The study showed that lung MSCT was highly sensitive in diagnosing left ventricular dysfunction in patients with CHD with improved coronary blood flow and normalized heart rate.
Application of velocity vector imaging (VVI) in the evaluation of left ventricular myocardial contractile strain and dyssynchrony before and after stent implantation in patients with coronary heart disease
