REMODELING OF THE LEFT ATRIUM, THE RELATIONSHIP WITH THE SIZE OF THE LEFT VENTRICLE DEPENDING OF THE BODY MASS INDEX WITH COMORBIDITY OF ARTERIAL HYPERTENSION

Bobylev Yuri Mikhailovich, Koshurnikova Ekaterina Petrovna, Kozlovskaya Marina Aleksandrovna

The purpose of the research - to evaluate the effect of obesity on the size of the left atrium (LA) and to identify the relationship with the size and geometry of the left ventricle (LV) Material and methods. This retrospective study included 148 women, average age 65.53±11.05 years with arterial hypertension of 1-3 degrees. Patients were divided into two groups with normal upper-lower LA size (≤48 mm) and enlarged LA size (>48 mm). Results. Compared with patients with normal LA size, patients with enlarged LA had a higher body mass index (BMI), greater thickness of the posterior wall of the left ventricle (LV), increased LV size. Body mass index was a significant and independent predictor of LA increase. Other independent predictors were final systolic size, final diastolic size, and left ventricular posterior wall thickness. In patients with increased LA and obesity, the predominance of left ventricular concentric hypertrophy was revealed. Conclusion. Obesity is one of the strongest predictors of left atrium enlargement in women with arterial hypertension. Obesity increases the relationship between the mass of the left ventricle and the size of the left atrium. In obese women, ventricular concentric hypertrophy is associated with a larger LA size than ventricular excentric hypertrophy.

Keywords:body mass index, left atrium size, obesity, remodeling