NUR 114 - Hypertension EXAM III Flashcards
a measure of the force exerted by the blood against the walls of the blood vessels
blood pressure
Arterial baroreceptor system
Regulation of body fluid
RAAS
Vascular autoregulation
responsible for maintenance of blood pressure
Hormone system in the body that regulates blood pressure and fluid balance
Renin - Angiotensin System
When BP in the kidneys fall, a compensatory mechanism occurs to assure that blood flow is maintained. A low BP causes the release of renin into the bloodstream from a group of cells in the glomeruli of the kidneys. When renin arrives in the liver, it converts angiotensinogen to angiotensin 1
How the Renin - angiotensin system works
________ goes to the lungs where the alveoli convert it to Angiotensin 2
Angiotensin 1
_________ acts to raise peripheral resistance; thus, raising the blood pressure, restoring blood flow to the kidneys and decreasing the release of renin
Angiontensin 2
_________ converts to angiotensin 3 stimulating the adrenal cortex to release aldosterone to increase BP and fluid volume, and the problem is resolved
Angiotensin 2
anxiety, fear, and pain can cause an ________ in blood pressure.
increase
Normal - <120 over <80
BP 120 – 129/<80 (Prehypertension)
BP 130 – 139/80 – 89 (Hypertension stage I)
BP 140 or higher /90 or higher (hypertension stage II)
BP > or = 180/120 (Hypertensive crisis)
Stages of Hypertension
Adult over sixty years, start medication if BP is greater than ________.
150/90
Adult under sixty years, start medication if BP is greater than _______.
140/90
Most common type of hypertension, usually of unknown origin occurring in 90-95% of all patients diagnosed with hypertension.
essential hypertension
what can hypertension lead to ?
MI, CVA, peripheral vascular disease
Age >60 or postmenopausal Ethnicity Alcohol Diabetes Mellitus Elevated serum lipids Sodium and caffeine Socioeconomic status Electrolyte imbalance
risk factors for essential hypertension
_______ ___________ is related to renal, endocrine, cardiovascular, neurological disorders, pregnancy and certain drugs such as estrogen and cocaine. type of hypertension that is a result of a different medical issue..
*treatment consists of eliminating the cause.
secondary hypertension