Pararenalfat Tissue: Rate of Pararenal Obesity and Relation with Anthropometric Indices of Obesity

Aim. To study a rate of excessive pararenal fat tissue (PRFT) thickness and its relationship with anthropometric obesity indices.Material and methods. 372 patients (152 men and 220 women) were included in the study, the average age was 63.5±13.3 years. There were measured: height, weight, waist circumference (WC), hip circumference (HC), body mass index (BMI), WC/height ratio, sagittal abdominal diameter (SAD), body fat percentage (BFP), body surface area (BSA), body adiposity index (BAI) and visceral obesity index (VAI). All subjects underwent abdominal multispiral computed tomography. PRFT thickness was detected on a single slice at the level of the left renal vein.Results. 27% of the examined group had BMI<25 kg/m2, 28% – excessive body mass, 45% – obesity. The median PRFT thickness was 1.61 (1.03; 2.46) cm. There were correlations between PRFT thickness and glucose (r=0,64, p<0,05) and uric acid (r=0,46, p<0,05) levels. The threshold of referential PRFT thickness was 1,91cm. The rate of pararenal obesity was 9,9% among those with normal body mass, 29,3% in excessive body mass, 66,1% – in 1 class obesity, 67,7% – in 2 class, and 90,1% – in 3 class. The correlation analysis revealed a significant positive correlation between the PRFT thickness and obesity indices with exception of VAI and BAI: with BMI (r=0.43, p<0.05), WC (r=0.57, p<0.05), SAD (r=0.58, p<0.05), BFP (r=0.48, p<0.05), WC/height ratio (r=0.46, p<0.05), and BSA (r=0.58, p<0.05).Conclusion. Excessive PRFT may be detected isolated without any external anthropometric signs of obesity, wherein it is an active component of metabolic disorders typical for obesity. The most significant indices for the detection of pararenal obesity may be WC, SAD, and BSA

Augmentation index in patients with different stages of hypertension

Aim. To assess the augmentation index (AIx) in hypertensive patients depending on stages of hypertension (HTN).Material and methods. Eighty-three people were examined: 62 patients with HTN and 21 patients of the control group. The subjects underwent a carotid duplex ultrasound and photoplethysmography to determine AIx. The results were processed using Statistica 10.0 software.Results. Patients with HT were divided into 3 groups: stage I HTN (n=23); stage II HTN (n=18); stage III HTN (n=21). AIx was significantly higher in all groups of hypertensive patients compared to the control group. AIx levels were higher in the groups with a higher stage of HTN. Correlations were found between AIx and intima-media thickness (IMT) (r=0,676, p<0,05), the presence (r=0,496, p<0,05) and the number of atherosclerotic plaques (ASP) (r=0,56, p<0,05), carotid stenosis percentage (r=0,564, p<0,05). Multivariate analysis revealed that the Aix level is significantly affected only by age, INT and the presence of ASP. According to the ROC-analysis, stage I HTN are characterized by Alx levels from -0,8 to 1,4% (sensitivity, 87,5%; specificity, 55%), stage II — 1,4-18,5% (sensitivity, 71%; specificity, 57,3%), and stage III >18,5% (sensitivity, 85,4%; specificity, 53%).Conclusion. With an increase in HTN stage, Alx significantly increases and directly correlates with IMT, the presence and amount of ASP, and the carotid stenosis percentage. The Alx level is influenced by age, IMT and the presence of ASP. ROC-analysis revealed the threshold values of Alx for each stage of hypertension