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Some Effects of the Environment on Emotions and their Relationships to Cardiovascular Diseases
Published in J. Rose, Human Stress and the Environment, 2021
Thus, there is little evidence that behaviorally-induced pressor responses or variability can explain either the development of hypertension or a shifting hemodynamic transition to established hypertension,64,67,68 and critical reviews67,68 find inadequate evidence to document the hypothesis. It is still possible that repetitive heightened pressor elevations or delay in return to baseline might contribute to structural wall damage in resistance vessels and the hemodynamic transition from borderline to sustained hypertension, and also play a role in cardiovascular complications of hypertension.
Spatial analysis of the effects of PM2.5 on hypertension among the middle-aged and elderly people in China
Published in International Journal of Environmental Health Research, 2021
Hypertension is one of the most common chronic disease worldwide, nearly 17 million deaths due to cardiovascular diseases and 9.4 million deaths due to complications of hypertension reported by the World Health Organization (WHO) in 2013. As a middle-income country, the prevalence of hypertension in China is equally high. According to the National Nutrition and Chronic Diseases Status Reports, the prevalence of hypertension in adults aged 18 and over was 27.9% in 2015, remaining at a high level in subsequent years. In addition, the prevalence of hypertension also increases with age (Shengshou and Runlin et al. 2019). Thus, hypertension represents a heavy social and economic burden (Zhou et al. 2019). With the deterioration of organs and body functions, the middle-aged and elderly individuals represent are vulnerable to chronic diseases, especially high blood pressure. Thus, in the absence of effective prevention and control strategies, the prevalence of hypertension will continue to rise in the next few decades with the rapid increase in the aging population.
The effect of adherence on antihypertensive therapy plans in patients with diabetes
Published in IISE Transactions on Healthcare Systems Engineering, 2021
Saeideh Mirghorbani, Sharif Melouk, John Mittenthal
On the one hand, patients want to avoid the side effects of medications and guarantee a higher QALY in the short term. On the other hand, advanced stages of disease put patients at higher risk of experiencing lower quality of life due to CVD complications in the long term. Therefore, the optimal decision uncovers a medication plan that guarantees a balanced tradeoff between higher QALYs in the short term and lower risks in the long term. In other words, a patient with a low level of SBP with no history of cardiovascular complications taking hypertension medications would presumably experience a lower quality of life in the short term than a patient with the same SBP level who is not taking medications, however, she has a lower risk of cardiovascular complications over a long period of time.
On the cooling effect of flowing blood on hepatic tumor ablation process
Published in Journal of Medical Engineering & Technology, 2018
For the first factor, the blood flow depends mainly on perfusion rate which is the process of a body delivering blood to a capillary bed in its biological tissue. Thus, the higher is the perfusion rate, the higher is the cooling effect of blood and in such a way lowering the heating effect, which is required to kill the cancer cells. In this study, a different value of blood rate perfusion applied in the software package and results obtained. Figure 7 shows the effect of increasing the blood perfusion rate of blood in the near veins and arteries. Consequently, the ablation process may not be able to completely destroy the tumour and the number of killed cells is decreased. This effect is consider negative effect for the process of ablation. In order to overcome the cooling effect on ablation process, the supplied voltage should be increased till the fraction of necrotic tissue become unity. Sometimes – especially in clinical complications like hypertension – even increasing the supplied voltage does not lead to full destruction of malignant tissue during specific period of operation time as shown in Figure 8.