HYPERTENSION & A ; REGULATION OF BLOOD PRESURE
Introduction:
High blood pressure is the most common cardiovascular disease. In a study carried out in 2000, high blood pressure was found in 28 % of American grownups. The prevalence varies with age, race, instruction, and many other variables. Sustained arterial high blood pressure amendss blood vass in kidney, bosom, and encephalon and leads to an increased incidence of nephritic failure, coronary disease, cardiac failure, and shot. Harmonizing to a Framingham survey of blood force per unit area tendencies in middle-aged and older persons, about 90 % of Caucasic Americans will develop high blood pressure in their life-time. Effective pharmacologic lowering of blood force per unit area has been shown to forestall harm to blood vass and to well cut down morbidity and mortality rates. Unfortunately, several studies indicate that merely one tierce of Americans with high blood pressure have adequate blood force per unit area control. Many effectual drugs are available. Knowledge of their antihypertensive mechanisms and sites of action allows accurate anticipation of efficaciousness and toxicity. As a consequence, rational usage of these agents, entirely or in combination, can take down blood force per unit area with minimum hazard of serious toxicity in most patients.High blood pressure:
High blood pressure is defiend as either a continued systolic blood force per unit area ( SBP ) of greater than 140 mm mercury or a sustained diastolic blood force per unit area ( DBP ) of greater than 90 mm hg.Hypertension consequences from increased peripheral vascular smooth musculus tone, which leads to increased arteriolar opposition and decreased electrical capacity of the venous system.In most instances, the cause of the increased vascular tone is unknown.Elevated blood force per unit area is an highly common upset, impacting approximatelty of 15 % of the population of United States ( 60 million people ) .Although many persons have no symptoms, chronic high blood pressure either systolic or diastolic can take to cereberovascular accidents ( shot ) , congestive bosom failure, myocardial infaction and nephritic demage.The incidence of morbidity and mortality significantly decreases when high blood pressure is diagnosed early and is properly treated.In acknowledgment of the progressive nature of moderate high blood pressure, the 7th study of the Joint National Committee classifies high blood pressure in to 4 classs for the intent of intervention hypertension.The classs are normal ( SBP/SBP, & lt ; 120/ & lt ; 80 ) , prehypertension ( SBP/DBP,120-139/80-89 ) , phase 1 high blood pressure ( SBP/DBP,140-159/90-99 ) , and phase 2 high blood pressure ( SBP/DBP?160/?100 ) .
HYPERTENSION & A ; REGULATION OF BLOOD PRESURE:Diagnosis:
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Hypertension
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