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chapter 44
pharmacology fscj 2011
55
Nursing
Undergraduate 3
10/11/2011

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Term
Hypertension
Definition
an increase in blood pressure such that the systolic pressure is greater than 140 mmHg and the diastolic pressure is greater than 90 mmHg
Term
Essential hypertension
Definition
most common type, affecting 90% of persons with high blood pressure.
Term
he exact origin of essential hypertension is unknown; however, contributing factors may include: 8
Definition
(1) a family history of hypertension, (2) hyperlipidemia, (3) African-American background, (4) diabetes, (5) obesity, (6) aging, (7) stress, and (8) excessive smoking and alcohol ingestion.
Term
Ten percent of hypertension cases are related to renal and endocrine disorders and are classified as
Definition
secondary hypertension.
Term
The______ regulate blood pressure via the renin-angiotensin-aldosterone system.
Definition
kidneys
Term
_______ stimulates production of angiotensin II (a potent vasoconstrictor), which causes the release of aldosterone
Definition
Renin
Term
The baroreceptors in the aorta and carotid sinus and the vasomotor center in the medulla also assist in the regulation of ______ _____.
Definition
blood pressure
Term
Other hormones that contribute to ____ ____ ____ are the antidiuretic hormone (ADH), atrial natriuretic peptide (hormone) (ANP), and brain natriuretic peptide (BNP).
Definition
blood pressure regulation
Term
is produced by the hypothalamus and is stored and released by the posterior pituitary gland (neurohypophysis).
Definition
antidiuretic hormone (ADH
Term
Alcohol increases _____ secretions, causing the production of angiotensin II.
Definition
renin
Term
____Americans are more likely to develop hypertension at an earlier age than ____ Americans.
Definition
african, white
Term
The use of beta-adrenergic blockers (beta blockers) and angiotensin-converting enzyme (ACE) inhibitors is less effective for the control of hypertension in ___ ____ unless the drug is combined or given with a diuretic
Definition
african american
Term
Renin, an enzyme located in the juxtaglomerular cells of the kidney, is released when _____ ____ ____
Definition
blood pressure decreases
Term
______ ______ are twice as sensitive as whites to beta blockers and other antihypertensives.
Definition
asian americans
Term
One of the troublesome side effects of the use of antihypertensive agents in older adults, especially frail or institutionalized persons, is ______ _____
Definition
orthostatic hypotension.
Term
There are many nonpharmacologic ways to decrease blood pressure including:
Definition
(1) stress-reduction techniques, (2) exercise (increases high-density lipoproteins [HDL]), (3) salt restriction, (4) decreased alcohol ingestion, and (5) weight reduction
Term
DEFINE the 3 main hypertension levels .
Definition
Prehypertension defined as a systolic blood pressure (SBP) 120 to 139 and a diastolic blood pressure (DBP) 80 to 89. Stage 1 hypertension falls between 140/90 and 159/99, and stage 2 hypertension is 160/100 or greater
Term
Antihypertensive drugs, used either singly or in combination with other drugs, are classified into six categories
Definition
(1) diuretics, (2) sympatholytics (sympathetic depressants), (3) direct-acting arteriolar vasodilators, (4) ACE inhibitors, (5) angiotensin II receptor blockers (ARBs), and (6) calcium channel blockers.
Term
_______ diuretics should not be used for clients with renal insufficiency (creatinine clearance less than 30 mL/min).
Definition
thiazide
Term
sympatholytics comprise five groups of drugs
Definition
(1) beta-adrenergic blockers, (2) centrally acting alpha2 agonists, (3) alpha-adrenergic blockers, (4) adrenergic neuron blockers (peripherally acting sympatholytics), and (5) alpha1- and beta1-adrenergic blockers. Beta-adrenergic
Term
Sympatholytics
Definition
Sympathetic Depressants
Term
____ _____ _____ are used as antihypertensive drugs or in combination with a diuretic.
Definition
Beta-adrenergic blockers, frequently called beta blockers,
Term
Beta (β+ and β–)-adrenergic blockers _____ cardiac output by diminishing the sympathetic nervous system response to ______ basal sympathetic tone.
Definition
reduce, decrease
Term
___ ____ should not be used by clients with second- or third-degree atrioventricular (AV) block or sinus bradycardia.
Definition
beta-blockers
Term
The nonselective beta blockers block ____ and ____- receptors, which can result in bronchial constriction.
Definition
beta1, beta2
Term
Noncardioselective beta blockers inhibit the liver's ability to convert glycogen to glucose in response to _______
Definition
hypoglycemia
Term
beta1 blocker contraindications
Definition
Second- and third-degree heart block, cardiogenic shock, HF, sinus bradycardia. NOTE: metoprolol and carvedilol may be prescribed for early use in management of chronic HF
Term
beta1 side effects
Definition
Fatigue, weakness, dizziness, nausea, vomiting, diarrhea, mental changes, nasal stuffiness, impotence, decreased libido, depression
Term
beta1 adverse effects
Definition
Bradycardia, thrombocytopenia Life-threatening: Complete heart block, bronchospasm, agranulocytosis
Term
Centrally acting alpha2 agonists decrease the ___ ___ from the brainstem to the peripheral vessels.
Definition
sympathetic response
Term
Centrally acting alpha2 agonists have what affect on the body?
Definition
increases vagus activity; decreases cardiac output; and decreases serum epinephrine, norepinephrine, and renin release.
Term
____ _____ are not given with centrally acting sympatholytics, because accentuation of bradycardia during therapy and rebound hypertension on discontinuing therapy can occur.
Definition
beta blockers
Term
Side effects of alpha2 agonists include
Definition
rowsiness, dry mouth, dizziness, and slow heart rate (bradycardia).
Term
Alpha-Adrenergic Blockers
Definition
This group of drugs blocks the alpha-adrenergic receptors (alpha blockers), resulting in vasodilation and decreased blood pressure.
Term
This drug helps maintain the renal blood flow rate.
Definition
Alpha-Adrenergic Blockers
Term
The ____ ____ ____ are used mainly to reduce blood pressure and can be used to treat benign prostatic hypertrophy (BPH
Definition
alpha1-adrenergic blockers
Term
Selective alpha-adrenergic blockers _____ the arterioles and venules, ______peripheral resistance and _____ blood pressure.
Definition
dilate, decreasing, lowering
Term
Drug interactions occur when ____ ____ blockers are taken with antiinflammatory drugs and nitrates
Definition
alpha-adrenergic
Term
_______ ________ blockers are potent antihypertensive drugs that block norepinephrine release from the sympathetic nerve endings, causing a decrease in norepinephrine release that results in a lowering of blood pressure
Definition
Adrenergic Neuron Blockers (Peripherally Acting Sympatholytics)
Term
The adrenergic neuron blockers are considered the last choices for treatment of chronic hypertension, because these drugs can cause:
Definition
orthostatic (postural) hypotension.
Term
alpha-adrenergic blocker side effects:
Definition
Dizziness, drowsiness, headache, nausea, vomiting, diarrhea, impotence, vertigo, urinary frequency, tinnitus, dry mouth, incontinence, abdominal discomfort
Term
Angiotensin-Converting Enzyme (Ace) Inhibitors
Definition
Drugs in this group inhibit ACE, which in turn inhibits the formation of angiotensin II (vasoconstrictor) and blocks the release of aldosterone. Aldosterone promotes sodium retention and potassium excretion. When aldosterone is blocked, sodium is excreted along with water, and potassium is retained.
Term
ACE inhibitor contraindications
Definition
should not be given during pregnancy; harm to the fetus due to reduction in placental blood flow could occur. This group of drugs should not be taken with potassium-sparing diuretics such as spironolactone (Aldactone) or salt substitutes that contain potassium,
Term
Slow calcium channels are found in the ______ and ____ ____ ___ cells
Definition
myocardium (heart muscle), vascular smooth muscle (VSM
Term
Calcium channel blockers do what?
Definition
block the calcium channel in the VSM, promoting vasodilation.
Term
Normally _____ blockers are not prescribed with _____ blockers, because both drugs decrease myocardium contractility
Definition
beta, calcium
Term
The side effects and adverse reactions of calcium channel blockers include
Definition
flush, headache, dizziness, ankle edema, bradycardia, and AV block.
Term
1. A client's blood pressure (BP) is 145/90. According to the guidelines for determining hypertension, the nurse realizes that the client's BP is at which stage?

a. Normal

b. Prehypertension

c. Stage 1 hypertension

d. Stage 2 hypertension
Definition
C
Term
2. The nurse acknowledges that the first-line drug for treating this client's blood pressure might be which drug?

a. Diuretic

b. Alpha blocker

c. ACE inhibitor

d. Alpha/beta blocker
Definition
A
Term
3. The nurse is aware that which group(s) of antihypertensive drugs are less effective in African-American clients?

a. Diuretics

b. Calcium channel blockers and vasodilators

c. Beta blockers and ACE inhibitors

d. Alpha blockers
Definition
C
Term
4. The nurse knows that which diuretic is most frequently combined with an antihypertensive drug?

a. chlorthalidone

b. hydrochlorothiazide

c. bendroflumethiazide

d. potassium-sparing diuretic
Definition
B
Term
5. The nurse explains that which beta blocker category is preferred for treating hypertension?

a. Beta1 blocker

b. Beta2 blocker

c. Beta1 and beta2 blockers

d. Beta2 and beta3 blockers
Definition
A
Term
6. Captopril (Capoten) has been ordered for a client. The nurse teaches the client that ACE inhibitors have which common side effects?

a. Nausea and vomiting

b. Dizziness and headaches

c. Upset stomach

d. Constant, irritating cough
Definition
D
Term
7. A client is prescribed losartan (Cozaar). The nurse teaches the client that an angiotensin II receptor blocker (ARB) acts by doing what?

a. Inhibiting angiotensin-converting enzyme

b. Blocking angiotensin II from AT1 receptors

c. Preventing the release of angiotensin I

d. Promoting the release of aldosterone
Definition
B
Term
8. During an admission assessment, the client states that she takes amlodipine (Norvasc). The nurse wishes to determine whether or not the client has any common side effects of a calcium channel blocker. The nurse asks the client if she has which signs and symptoms? (Select all that apply.)

a. Insomnia

b. Dizziness

c. Headache

d. Angioedema

e. Ankle edema

f. Hacking cough
Definition
B,C, E
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