ASSESSMENT OF LEFT VENTRICULAR DYSFUNCTION IN PATIENTS WITH CORONARY HEART DISEASE DURING MINIMALLY INVASIVE SURGERY ACCORDING TO LUNG COMPUTED TOMOGRAPHY DATA

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 patients
aged 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. 

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