Nasrin Milani; Mohamad Sajjadi-Manesh; Ehsan Mousa-Farkhani; Ali Taghipour
Abstract
Introduction: Hypertension (HTN) is one of the most life-threatening disorders worldwide. Although some examinations have demonstrated an incidental relationship between blood pressure and serum level of 25-hydroxyvitamin D, there have been new exchanges of views with respect to the influence of low ...
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Introduction: Hypertension (HTN) is one of the most life-threatening disorders worldwide. Although some examinations have demonstrated an incidental relationship between blood pressure and serum level of 25-hydroxyvitamin D, there have been new exchanges of views with respect to the influence of low vitamin D levels in hypertension. This study aims to find out the relationship between hypertension and regular consumption of vitamin D. Methods: A case-control study was conducted with regard to secondary data (SINA system) among people, aged 30 years old or older, registered in 2017-2018. A sample size of 1,500 patients was used comprising of 500 patients with hypertension as the case group and 1,000 people without history of hypertension as the control group. The population was selected randomly. High blood pressure diagnostic criteria were considered in the same manner with the clinical guidelines of the 7th National Joint Committee. Data were analyzed using SPSS 22 software.Results: Regular consumption of vitamin D had a protective role on hypertension (P value <0.05) and [OR= 0.421 (0.353- 0.505)].Conclusion: By identifying hypertension risk factors, taking measures to prevent it would be more practical and the risk of hypertension can be reduced. An enormous volume of epidemiological and empirical proof is indicative of the fact that vitamin D deficiency can lead to high blood pressure. The present investigation proves that vitamin D supplementary may serve as a convenient method to diminish the risk of progression of increased blood pressure due to its protective effect on blood pressure.
Samaneh Sajjadi; Sepideh Hejazi; Ghazaleh Azami; Mina Akbari; Fatemeh Akbari
Abstract
Pulmonary arterial hypertension (PAH) is characterized by the mean pulmonary artery pressure of more than 25 mmHg and pulmonary artery wedge pressure of less than 15 mmHg evidenced by right-heart catheterization. In the classification of PAH, some subgroups are defined as primary or secondary PAH based ...
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Pulmonary arterial hypertension (PAH) is characterized by the mean pulmonary artery pressure of more than 25 mmHg and pulmonary artery wedge pressure of less than 15 mmHg evidenced by right-heart catheterization. In the classification of PAH, some subgroups are defined as primary or secondary PAH based on the underlying etiologies of the disease. Early episodes of PAH have been reported to occur at younger ages and in women in idiopathic or familial forms with the survival rate of 1-3 years. According to recent registries, the affected patients are older and have better survival rates. Some of the key elements in the pathophysiology of PAH include intima and media proliferation, vascular remodeling, and blood coagulation, which could increase the defiance of pulmonary vascularity, so that the cellular and molecular pathways would be able to induce PAH through specific mechanisms. Although no pathognomonic signs and symptoms have been reported in the literature, the most prominent manifestations of PAH are associated with disorders such as heart failure. Currently, PAH is known as a severe and occasionally life-threatening multifactorial clinical condition. Considering endothelial dysfunction, vasoconstriction, inflammatory reactions, and platelet aggregation as the main pathophysiological arms of the disease, specific treatment approaches have been proposed to inhibit these manifestations. These methods result in the effective treatment response, as well as the proper early and late outcomes of PAH. Due to the high incidence of cardiovascular diseases and the associated progressive life-threatening conditions, such as heart failure and PAH in the Iranian population, identification of the etiological, pathophysiological, diagnostic, and novel therapeutic approaches for PAH is essential to the proper management of this clinical condition.