Whalen Chapter 17 Flashcards
Have a higher incidence of hypertension than do both non-Hispanic whites and Hispanic white
Non-Hispanic Blacks
Defined as either a systolic BP greater than 140 mmHg or sustained Diastolic BP greater than 90 mmHg
Hypertension
Top 2 cause of death in the world
Heart disease
Stroke
Regulated within a narrow range to provide
adequate perfusion of the tissues without causing damage to the vascular system, particularly the arterial intima (endothelium).
Arterial Blood Pressure
Act by changing the activity of the sympathetic nervous
system and is responsible for the rapid, moment-to-
moment regulation of blood pressure.
Baroreflexes
Provides long-term control of blood pressure by altering
the blood volume
Kidney
Potent circulating vasoconstrictor, constricting both arterioles and veins, resulting in an increase in blood pressure.
Angiotensin ll
The goal of this therapy is to reduce cardiovascular and
renal morbidity and mortality
Antihypertensive therapy
Stimulates aldosterone secretion leading to increased renal sodium reabsorption
Angiotensin ll
Can sometimes be controlled by Monotherapy
Mild hypertension
Patients with Diabetes
140/80 mm Hg
Patients with Chronic Kidney Disease and Proteinuria
130/80 mm Hg
Elderly patients
< 150/90 mm Hg
Used as an initial drug therapy for HTN
Thiazide diuretics
Effective in preventing Stroke, Myocardial infarction, and Heart failure
Low-Dose Diuretic Therapy
Useful in combination therapy (Beta blockers, ACE inhibitors, ARBs, PSB with exception of Metolazone
Thiazides
Acts promptly by blocking Sodium and Chloride reabsorption in kidney
Loop diuretics
Rarely used alone to treat HTN, but is commonly used to manage symptoms of Heart failure and Edema
Loop Diuretics
Aldosterone receptor antagonist examples
Eplerenone
Spironolactone
Inhibitors of Epithelial Sodium Transport at late distal and collecting ducts
Triamterene
Amiloride
Reduces potassium loss in urine
Eplerenone
Spironolactone
Have additional benefit of diminishing cardiac remodeling
Aldosterone antagonist
Treatment option for hypertensive patients with concomitant heart disease or failure
Beta blockers
Decreases sympathetic outflow and formation of Angiotensin ll
Beta blockers
Prototype beta blocker
Propranolol
Selective blocker of B1 receptor examples that are most commonly prescribed beta blocker
Metoprolol
Atenolol
May be administered cautiously in hypertensive patients who also have asthma
Selective beta blockers
Examples of Non-Selective Beta blockers
Propranolol
Nadolol
Contraindicated in patients with asthma due to blockade of b2-mediated bronchodilation
Non-Selective Beta blockers
Orally active for the treatment of HTN
Beta blockers
Undergoes extensive and high variable first pass metabolism
Propranolol
Beta blockers available in intravenous formulations
Propranolol
Esmolol
Metoprolol
A/E of Beta blockers
Bradycardia
Hypotension
Decrease of Libido
CNS S/E - Fatigue, Insomnia, Lethargy
Decreases High density lipoprotein cholesterol and Increases Triglycerides
Non-cardioselective Beta blockers
May disturb lipid metabolism
Non-cardioselective Beta blockers
1st line treatment of HTN in patient’s with High-coronary disease risk or History of Diabetes
Enalapril
Lisinopril
Responsible for the breakdown of Bradykinin
ACE inhibitors
Peptide that increases the production of Nitric oxide and Prostacyclin
Bradykinin
ACE INHIBITORS
Bradykinin levels decreases, Angiotensin ll increases.
TRUE OR FALSE
False
TRUE / FALSE
ACE inhibitors also slows the progression of Diabetic Nephropathy and decreases Albuminuria.
True
Standard of patient following a myocardial infarction
ACE inhibitors
1st line drugs for treating HTN, Hypertensive patients with Chronic Kidney disease
ACE inhibitors
True or False
All ACE inhibitors are orally bioavailable as a drug or produg
True
Undergoes hepatic conversion to active metabolites and is preferred in patients with severe hepatic impairment.
Captopril
Lisinopril
Only ACE inhibitors not eliminated primarily by Kidney and does not require dose adjustment
Fosinopril
Only drug under this classification available intravenously
Enalaprilat
Thought to be due to the increase levels of Bradykinin and Substance P in the pulmonary tree
Dry cough
Rare but is a potentially life threatening reaction
Angioedema
An alternative to ACE inhibitors
Losartan
Irbesartan
Decreases salt and water retention
ARBs
1st line agents for trt of hypertension especially in patients with compelling indication of diabetes
ARBs
These agents are teratogenic and should not be used by pregnant women
ARBs
Acts earlier in renin-angiotensin-aldosterone system and should not be routinely combined with ACE inhibitors or ARBs
Aliskiren
Aliskiren is metabolized by what?
CYP3A4
Recommended treatment option for Hypertensive patients with Diabetes and angina
Calcium channel blocker
3 chemical classes of CCB
Diphenylalkylamine
Benzothiazepines
Dihydropyridine
Drug under diphenylalkylamine that is the only drug available in US
Verapamil
Used to treat angina and supraventricular Tachyarrthmia and prevent migraines and cluster headache
Verapamil
Only drug under Benzothiazepines that is currently available in US
Diltiazem
Has a less pronounced negative inotropic effect and has favorable s/e profile
Diltiazem
Drugs under Dihydropyridine
Nifedipine
Amlodipine
Isradipine
Felodipine
Nicardipine
Nisoldipine
Have a greater affinity with vascular cc than cc in the heart
Dihydropyridine
Blocks the inward movement of calcium by binding to L-type calcium channel
Calcium channel antagonist
Used in the treatment of Atrial fibrillation and should be avoided in patients with atrioventricular block
Diltiazem and Verapamil
Have a very long half-life and does not require sustained release formulations
Amlodipine
The S/E of Verapamil is Atrioventricular block and Constipation. True or False
True
May cause gingival hyperplasia
Nifedipine
Shown to reduce morbidity and mortality associated with heart failure
CARVEDILOL, Metoprolol succinate, Bisoprolol
Used in management of Gestational hypertension and Hypertensive emery
Labetalol
Produce a competitive block of a1 adrenoceptors
Prazosin, Doxazosin, Terazosin
Example of Centrally acting adrenergic drugs
Clonidine
Methyldopa
Used primarily for trt of HTN that has not responded adequately to treatment with 2 or more drugs. And is available as a transdermal patch
Clonidine
Occurs following the abrupt withdrawal of CLONIDINE
Rebound HTN
Mainly used to manage HTN in pregnancy and is an a2 agonist that is converted to methylepinephrine
Methyldopa
Cause Hypertrichosis and is used topically to treat male pattern baldness
Minoxidil
Rare but a life threatening situation characterized by severe elevation of BP
Systolic > 180 mm Hg
Diastolic > 120 mm Hg
Hypertensive emergency
BP remains elevated (above goal) despite administration of 3-drug regimen
Resistant HTN
Medications used in Hypertensive emergency:
CCB
Nifedipine
Clevidipine
Medications used in Hypertensive emergency:
Nitric oxide vasodilator
Nitroprusside
Nitroglycerin
Medications used in Hypertensive emergency:
Adrenergic Receptor antagonist
Phentolamine, Esmolol, Labetalol
Not effective in patients with inadequate kidney function
Thiazide diuretic