Search results
Results from the WOW.Com Content Network
The World Health Organization has identified hypertension (high blood pressure) as the leading cause of cardiovascular mortality. [182] The World Hypertension League (WHL), an umbrella organization of 85 national hypertension societies and leagues, recognized that more than 50% of the hypertensive population worldwide are unaware of their ...
A diagram explaining factors affecting arterial pressure. Pathophysiology is a study which explains the function of the body as it relates to diseases and conditions. The pathophysiology of hypertension is an area which attempts to explain mechanistically the causes of hypertension, which is a chronic disease characterized by elevation of blood pressure.
Essential hypertension (also called primary hypertension, or idiopathic hypertension) is a form of hypertension without an identifiable physiologic cause. [1] [2] It is the most common type affecting 85% of those with high blood pressure. [3] [4] The remaining 15% is accounted for by various causes of secondary hypertension. [3]
The macula densa causes an increase in Na + reabsorption, which causes water to follow in via osmosis and leads to an ultimate increase in plasma volume. Further, the macula densa releases adenosine which causes constriction of the afferent arterioles. At the same time, the juxtaglomerular cells sense the decrease in blood pressure and release ...
The prevalence of labile hypertension in USA is estimated to have more than 40 million adults which can develop the risks of hemorrhagic stroke. [15] Labile hypertension is most common in Charlottesville, Virginia with up to 11% of the population. Average age who have labile hypertension is 64±13 years. [16]
A hypertensive emergency is very high blood pressure with potentially life-threatening symptoms and signs of acute damage to one or more organ systems (especially brain, eyes, heart, aorta, or kidneys). It is different from a hypertensive urgency by this additional evidence for impending irreversible hypertension-mediated organ damage (HMOD).
High blood pressure usually does not cause symptoms. [63] Long term high blood pressure, however, is a major risk factor for coronary artery disease, stroke, heart failure, peripheral vascular disease, vision loss, and chronic kidney disease. [64] [65] Lifestyle factors can increase the risk of hypertension.
Other medications for high blood pressure and a low salt diet, e.g. DASH diet, may also be needed. [1] [4] Some people with familial hyperaldosteronism may be treated with the steroid dexamethasone. [1] Primary aldosteronism is present in about 10% of people with high blood pressure. [1] It occurs more often in women than men. [5]