Pathophysiology of hypertensive emergency (crisis hypertension) is shown in the picture below (click to enlarge image). Hypertensive emergency is characterized by a severe elevation in blood pressure (> 180/120 mm Hg) complicated by evidence of impending or progressive target organ dysfunction (coronary ischemia, disordered cerebral function, cerebrovascular events, pulmonary edema, and renal failure). …
Yellow fever is a viral hemorrhagic fever transmitted by mosquitoes infected with the yellow fever virus. Yellow fever has been a source of several devastating epidemics. Yellow fever epidemics broke out in the 1700s in Italy, France, Spain, England, and the United States.This Guidelines for Yellow Fever Control and Prevention describes how to detect and confirm suspected cases of yellow fever and how to respond to an outbreak of yellow fever a…
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