Visceral fat accumulation influenced blood flow velocity in hypertensive subjects

Arterial function measurements are widely used as surrogate markers of cardiovascular disease. However, it is unknown whether non-pathological factor may influence these measurements in particularly blood velocity function. The aim of current study was to investigate the relationship between visceral fat (VF) accumulation and hypertension incidence. The study evaluated the changes of blood velocity waveforms among normotensive and hypertensive subjects. One hundred twenty six individuals were classified into three groups which are lower VF, middle VF and higher VF regarding on their VF level. Resistive index (RI), velocity reflection index (VRI) and vascular elastic recoil index (VEI) were calculated from the 3 minutes assemble average of envelope waveform. The VF accumulation was higher in hypertensive than normotensive subjects. Peak systolic (S1), peak diastolic (D), VRI and VEI modulated significantly (P < 0.05) in higher VF compared to lower VF groups. RI and VRI show significantly different in hypertensive compared to normotensive groups. In conclusion, increased VF influences hypertension incidence and blood velocity regulation

The impact of visceral fat and blood flow velocity in hypertensive subjects running head: The impact of visceral fat and blood flow velocity

Objective: The aim of study is to assess health condition using data from blood flow velocity (BFV) measurement. We investigate the impact of different visceral fat (VF) level on BFV in normotensive and hypertensive subjects to predict health risk. Methods: A total of 125 individuals were classified into three groups according to their level of VF and blood pressure. We assess blood velocity waveforms in common carotid artery using developed portable Doppler ultrasound system with real-time monitoring. Results: Hypertensive subjects had higher VF level than normotensive subjects (p=0.001). Higher VF group had significant lower velocity features in peak systolic, peak diastolic and vascular elastic recoil. Velocity reflection index was significantly higher in higher VF group than lower VF group. Conclusion: In conclusion, BFV waveforms and its indices are strongly associated with VF accumulation among normotensive and hypertensive subjects. The data are valuable reference for evaluating health condition, monitoring development of hypertension and disease prevention

The real-time monitoring system of blood flow velocity using Doppler ultrasound for healthcare application

Doppler ultrasound is a widely used and reliable noninvasive device for blood flow waveform measurement. However, the commercialized blood flow devices are usually in hospital with limited access for public, required monitoring by competent staff and not easily transported. The aim of current study is to examine the potential of a portable blood flow velocity (BFV) Doppler ultrasound system for healthcare application. The effects of visceral fat (VF) level, blood pressure (BP) level (hypertension), aging, regular exercise and exercise-trained programme toward blood flow waveforms and its indices are determined. The peak systolic (S1) velocity and resistive index (RI) are significantly higher (p<0.05) in older population who exercise regularly than who does not. There are significant differences (p<0.05) in the RI and velocity reflection index between normotensive and hypertensive groups. The S1 and peak diastolic (D) are decreased significantly (p<0.05) from normotensive to hypertension groups. Low VF group has significantly increase vascular elasticity than high VF group. In contrast, low VF group has decrese reflected wave velocity. Our findings have broad implication in prevention and monitoring of cardio-related healthproblem that possibly early detection by frequent measurement of BFV, BP and electrocardiogram using this portable device