Cardiovascular Drugs Flashcards
Types of drugs used to improve cardiovascular function include:
- inotropic drugs
- antiarrhythmic drugs
- antianginal drugs
- antihypertensive drugs
- diuretics
- antilipemic drugs
influence the strength or contractility of muscle tissue
inotropic drugs
they increase the force of the heart’s contractions
inotropic drugs
Inotropic drugs influence the strength or contractility of muscle tissue. As a result, they increase the force of the heart’s contractions (this is known as a ___________________________)
positive inotropic effect
are two types of inotropic drugs
glycosides and phosphodiesterase (PDE) inhibitors
slow the heart rate (a negative chrono- tropic effect) and slow electrical impulse conduction through the atrioventricular (AV) node (a negative dromotropic effect).
Cardiac glycosides
This action is useful for patients who have atrial fibrillation
Cardiac glycosides
it can help to control their heart rate and to prevent the heart rate from becoming too fast.
Cardiac glycosides
Inhibits sodium-potassium-activated adenosine triphosphase, an enzyme that regulates the amount of sodium and potassium inside the cell, resulting in increased intracellular levels of sodium and calcium.
Digoxin
Promotes movement of calcium from extracellular to intracellular cytoplasm and strengthens myocardial contraction
Digoxin
Acts on the central nervous system to enhance vagal tone, slowing contractions through the sinoatrial and atrioventricular nodes and providing an antiarrhythmic effect
Digoxin
Indications for Digoxin
Heart failure
Atrial fibrillation and flutter
Supraventricular tachycardia
Digoxin is excreted by the?
kidneys
Withhold the Digoxin if the apical pulse is ___________________________, and notify the prescriber
less than 60 beats/minute
Periodically monitor ____________________ and ______________ levels in patients taking Digoxin
serum potassium; digoxin
Because cardiac glycosides have a narrow therapeutic index (margin of safety), they may produce ____________________.
digoxin toxicity
Before giving digoxin, take the patient’s ______________ for ____________________
apical pulse; 1 full minute
what happens to the vission of patients taking Digoxin?
blurred or yellow vision
an enzyme that regulates the amount of sodium and potassium inside the cell
Sodium-potassium-activated adenosine triphosphase
Signs and symptoms of digoxin toxicity include:
- vision changes (blurred or yellow vision)
- arrhythmias (bradycardia)
- complete heart block
treat angina by reducing myocardial oxygen demand (reducing the amount of oxygen the heart needs to do its work), by increasing the supply of oxygen to the heart or both
Antianginal Drugs
for treating acute angina
nitrates
for long-term prevention of angina
beta-adrenergic blockers
used when other drugs fail to prevent angina
calcium channel blockers
Types of Antianginal drugs:
- nitrates
- beta-adrenergic blockers
- calcium channel blockers
occurs when the coronary arteries supply insufficient oxygen to the myocardium
Angina
blood volume in the ventricles at the end of diastole
preload
pressure in the arteries leading from the ventricles
afterload
afterload is decreased by
calcium channel blockers and nitrates
Heart rate is decreased by
beta-adrenergic blockers and some calcium channel blockers
Preload is decreased by
nitrates
Contractility is decreased by
beta-adrenergic blockers and calcium channel blockers
Relaxes vascular smooth muscle
NITROGLYCERIN
Causes general vasodilation
NITROGLYCERIN
Indications for Nitroglycerin:
Acute or chronic anginal attacks
Beta-adrenergic antagonists is used for?
- used for long-term prevention of angina
- one of the main types of drugs used to treat hypertension.
one of the main types of drugs used to treat hypertension
Beta-adrenergic antagonists
Beta-adrenergic blockers include:
- atenolol
- carvedilol
- metoprolol tartrate
- nadolol
- propranolol hydrochloride
Beta1 - and beta2 - adrenergic blockers:
PROPRANOLOL
reduces cardiac oxygen demand by blocking catecholamine-induced increases in heart rate, blood pressure, and force of myocardial contraction
PROPRANOLOL
depresses renin secretion and prevents vasodilation of cerebral arteries
PROPRANOLOL
relieves anginal and migraine pain, lowers blood pressure, restores normal sinus rhythm, and helps limit myocardial infarction (MI) damage
PROPRANOLOL
Check the patient’s _________________ before giving Propranolol
apical pulse
Give Propranolol with _________
meals
Before any surgical procedure, notify the ______________________ that the patient is receiving propranolol
anesthesiologist
commonly used to prevent angina that doesn’t respond to drugs in either of the other antianginal classes.
Calcium Channel Blockers
are also used as antiarrhythmics and in the treatment of hypertension
Calcium Channel Blockers
Calcium Channel Blockers is used to?
- prevent angina
- used as antiarrhythmics
- treatment of hypertension
Calcium Channel Blockers used to treat angina include:
- amlodipine besylate
- diltiazem
- nicardipine
- nifedipine
- verapamil
prevent the passage of calcium ions across the myocardial cell membrane and vascular smooth-muscle cells
Calcium Channel Blockers
this causes dilation of the coronary and peripheral arteries, which decreases the force of the heart’s contractions and reduces the workload of the heart
Calcium Channel Blockers
reduce afterload, resulting in a decreased oxygen demand of the heart
calcium channel blockers
increase myocardial oxygen supply and slow cardiac impulse formation.
Calcium channel blockers
inhibits the influx of extracellular calcium ions across both myocardial and vascular smoothmuscle cell membranes
Calcium channel blockers
No calcium =
dilation
reduce blood pressure by interrupting the reninangiotensin activating system (RAAS).
Angiotensin-Converting Enzyme Inhibitors
Commonly prescribed ACE inhibitors include:
- benazepril
- captopril
- enalapril
- enalaprilat
- fosinopril sodium
- lisinopril
- moexipril
ACE Inhibitors:
CAPTOPRIL
Thought to inhibit angiotensin-converting enzyme (ACE), preventing conversion of angiotensin I to angiotensin II
CAPTOPRIL
Indications for Captopril:
- Sodium and water retention
- High blood pressure
- Impaired renal function in patients with diabetes
For patients taking Captopril:
Monitor _____________ and _________________ before therapy, every _______________ for the ______________ of therapy, and _____________ thereafter
white blood cell; differential counts; 2 weeks; first 3 months; periodically
For patients taking Captopril:
Give the drug _________________ because food may reduce drug absorption.
1 hour before meals
work by preventing the conversion of angiotensin I to angiotensin II.
ACE inhibitors
promote the excretion of sodium and water, reducing the amount of blood the heart needs to pump and reducing blood pressure.
ACE inhibitors
is a potent vasoconstrictor that increases peripheral resistance and promotes the excretion of aldosterone
Angiotensin II
Be sure to monitor the ______________ of a patient taking ACE
inhibitors
weight
lower blood pressure by blocking the vasoconstrictive effects of angiotensin II.
Angiotensin II Receptor Blocking Agents
Available ARBs include:
- candesartan cilexetil
- eprosartan
- irbesartan
- losartan
- Olmesartan
- Telmisartan
- valsartan
ARBS shouldn’t be used during the ___________________________ because of the risk of injury or death to the fetus
second and third trimesters
ARBs have varying pharmacokinetic properties, and all are highly bound to
plasma proteins
act by interfering with the RAAS
Angiotensin II Receptor Blocking Agents (ARBs)
they selectively block the binding of angiotensin II to the angiotensin II receptor. This prevents the vasoconstricting and aldosterone-secreting effects of angiotensin II (a potent vasoconstrictor), resulting in a blood pressure decrease.
Angiotensin II Receptor Blocking Agents (ARBs)
inhibits vasoconstricting and aldosteronesecreting effects of angiotensin lI by selectively blocking binding of angiotensin II to receptor sites in many tissues, including vascular smooth muscle and adrenal glands
Angiotensin II Receptor Blocking Agents (ARBs)
Indications for Angiotensin II Receptor Blocking Agents (ARBs):
High blood pressure
are one of the main types of drugs used to treat hypertension, including ocular hypertension.
Beta-adrenergic Antagonists
Beta-adrenergic blockers used for hypertension include:
- acebutolol
- atenolol
- betaxolol
- bisoprolol
- carteolol
- metoprolol tartrate
- nadolol
- pindolol
- propranolol hydrochloride
- timolol
decrease blood pressure and block betaadrenergic receptor sites in the heart muscle and conduction system. This decreases heart rate and reduces the force of the heart’s contractions, resulting in a lower demand for oxygen.
Beta-adrenergic Blockers
are used as first-line therapy for treating hypertension and are also indicated for the longterm prevention of angina
Beta-adrenergic Blockers
Suddenly stopping a beta-adrenergic blocker may trigger
angina, hypertension, arrhythmias, and acute MI
inhibits central vasomotor centers, decreasing sympathetic outflow to the heart, kidneys, and peripheral vasculature
Centrally Acting Sympatholytics: CLONIDINE
Centrally Acting Sympatholytics:
CLONIDINE
Decreases peripheral vascular resistance, systolic and diastolic blood pressure, heart rate
Centrally Acting Sympatholytics: CLONIDINE
Indications for Centrally Acting Sympatholytics: CLONIDINE:
High blood pressure
When stopping therapy in a patient receiving both clonidine and a beta-adrenergic blocker, gradually withdraw the ___________________________ first to minimize adverse reactions
beta-adrenergic blocker
trigger the excretion of water and electrolytes from the kidneys
Diuretics
a primary choice in the treatment of renal disease, edema, hypertension, and heart failure.
Diuretics
Thiazide and Thiazide-like Diuretics are derived from
sulfonamides
are used to treat edema and to prevent the development and recurrence of renal calculi
Thiazide and Thiazide-like Diuretics
are used to treat edema and to prevent the development and recurrence of renal calculi
Thiazide and Thiazide-like Diuretics
Thiazide diuretics include:
- bendroflumethiazide
- chlorothiazide
- hydrochlorothiazide
- hydroflumethiazide
- methyclothiazide
- polythiazide
Thiazide-like diuretics include:
- chlorthalidone
- indapamide
- metolazone
promote the excretion of water by preventing the reabsorption of sodium in the kidneys. As the kidneys excrete the excess sodium, they excrete water along with it.
Thiazide and Thiazide-like Diuretics
increase the excretion of chloride, potassium, and bicarbonate, which can result in electrolyte imbalances.
Thiazide and Thiazide-like Diuretics
With long-term use, thiazide diuretics also _______________________ by causing arteriolar vasodilation.
lower blood pressure
Thiazide Diuretics:
HYDROCHLOROTHIAZIDE
interferes with sodium transport across tubules of the cortical diluting segment of the nephron
HYDROCHLOROTHIAZIDE
increases renal excretion of sodium, chloride, water, potassium, and calcium
HYDROCHLOROTHIAZIDE
increases bicarbonate, magnesium, phosphate, bromide, and iodide excretion
HYDROCHLOROTHIAZIDE
decreases excretion of ammonia, causing increased serum ammonia levels
HYDROCHLOROTHIAZIDE
Indications for HYDROCHLOROTHIAZIDE
- Edema
- Hypertension
for patients taking HYDROCHLOROTHIAZIDE:
Monitor for adverse effects, such as pancreatitis, hematologic disorders, and electrolyte imbalances, especially ___________________
hypokalemia
symptoms of hypokalemia include
leg cramps and muscle aches
for patients taking HYDROCHLOROTHIAZIDE:
Frequently monitor _______________________________________.
weight and blood pressure
Initially, diuretic drugs ____________ circulating blood volume, leading to __________ cardiac output. However, if therapy is maintained, cardiac output ____________ but plasma fluid volume ______________.
decrease; reduced; stabilizes; decreases
used for the long-term treatment of hypertension
Thiazides
used to treat edema caused by kidney or liver disease, mild or moderate heart failure, and corticosteroid and estrogen therapy
Thiazides
Because these drugs decrease the level of calcium in urine, they may be used alone or with other drugs to prevent the development and recurrence of renal calculi.
Thiazides
For patient taking Thiazides:
Give the drug in the _____________ to prevent __________ from disrupting the patient’s sleep
morning; nocturia
inhibits sodium and chloride reabsorption in the ascending loop of Henle, thus increasing renal excretion of sodium, chloride, and water
Loop Diuretics: FUROSEMIDE
Loop Diuretics:
FUROSEMIDE
increases excretion of potassium
Loop Diuretics: FUROSEMIDE
produces greater maximum diuresis and electrolyte loss than a thiazide diuretic
Loop Diuretics: FUROSEMIDE
For patiebts taking Furosemide:
Monitor for adverse effects, such as pancreatitis, hematologic disorders, and electrolyte imbalances (especially _____________).
hypokalemia
Indications for Loop Diuretics: FUROSEMIDE :
- Acute pulmonary edema
- Edema
- Hypertension
the part of the nephron responsible for concentrating urine
ascending loop of Henle
Loop Diuretics received their name because they act primarily on the thick ______________________
ascending loop of Henle
also inhibit sodium, chloride, and water reabsorption in the proximal tubule.
Loop Diuretics
activate renal prostaglandins, which result in dilation of the blood vessels of the kidneys, lungs, and the rest of the body.
Loop Diuretics
are used to treat edema associated with renal disease, hepatic cirrhosis, and heart failure,
Loop Diuretics
Loop Diuretics is used to treat hypertension (usually with a ______________________________________ to
prevent _________________).
potassium-sparing diuretic or potassium supplement; hypokalemia
may also be used for the short-term management of ascites due to malignancy, idiopathic edema, or lymph-edema.
Ethacrynic acid
- may be used with mannitol to treat cerebral edema
- is also used to treat hypercalcemia.
Furosemide
increase the renal excretion of calcium.
Loop diuretics
Potassium-Sparing Diuretics a.k.a
Aldosterone-Inhibiting Diuretics
have weaker diuretic and antihypertensive effects than other diuretics but provide the advantage of conserving potassium
Aldosterone-Inhibiting Diuretics (Aldosterone-Inhibiting Diuretics)
Potassium-Sparing Diuretics (Aldosterone-Inhibiting Diuretics) drugs include:
- amiloride
- spironolactone
- triamterene
The direct action of potassium-sparing diuretics on the collecting ducts and distal tubule of the kidneys results in
urinary excretion of sodium, water, bicarbonate, and
calcium.
The drug also decreases the excretion of potassium and hydrogen ions. These effects lead to reduced blood pressure and increased serum potassium levels
Potassium-Sparing Diuretics (Aldosterone-Inhibiting Diuretics)
Giving potassium-sparing diuretics with potassium supplements or angiotensinconverting enzyme inhibitors increases the risk of _________________.
hyperkalemia
are used to reduce the ability of the blood to clot
Anticoagulant DrugsMajor categories of anticoagulant drugs include:
Major categories of anticoagulant drugs include:
- heparin
- oral anticoagulants
- antiplatelet drugs
- direct thrombin inhibitors
- factor Xa inhibitors
commercially from animal tissue
Heparin
is an anti-thrombolytic agent used to prevent clot formation
Heparin
low-molecular-weight heparins
Dalteparin Sodium and Enoxaparin Sodium
are derived by decomposing unfractionated heparin into simpler compounds.
Dalteparin Sodium and Enoxaparin Sodium
developed to prevent deep vein thrombosis
(DVT)
Dalteparin Sodium and Enoxaparin Sodium
their use is preferred because they can be given subcut and don’t require as much monitoring as unfractionated heparin.
Dalteparin Sodium and Enoxaparin Sodium
a blood clot in the deep veins (usually of the legs), in surgical patients
Deep Vein Thrombosis
Anticoagulant Drugs:
HEPARIN AND HEPARIN DERIVATIVES
WARFARIN
accelerates formation of an antithrombin Illthrombin complex
Anticoagulant Drugs: HEPARIN AND HEPARIN DERIVATIVES
inactivates thrombin
Anticoagulant Drugs: HEPARIN AND HEPARIN DERIVATIVES
prevents the conversion of fibrinogen to fibrin
Anticoagulant Drugs: HEPARIN AND HEPARIN DERIVATIVES
Effects of HEPARIN AND HEPARIN DERIVATIVES can be neutralized by
protamine sulfate
For patients taking Heparin:
Monitor ________________________ regularly.
partial thromboplastin time
inhibits vitamin K-dependent activation of clotting factors II (pro-thrombin), VII, IX, and X formed in the liver
WARFARIN
Indications of WARFARIN:
Prevention of pulmonary embolism
Warfarin’s effects can be neutralized by
vitamin K
For patients taking Warfarin:
Monitor _________________________ regularly
prothrombin time
are used to prevent arterial thromboembolism, particularly in patients at risk for Ml, stroke, and arteriosclerosis (hardening of the arteries).
Antiplatelet Drugs
Antiplatelet drugs include:
- aspirin
- clopidogrel
- dipyridamole
- ticlopidine
are used in the treatment of acute coronary syndromes
IV antiplatelet drugs
IV antiplatelet drugs include the medications:
- abciximab
- eptifibatide
- tirofiban
___________________ drugs are absorbed very quickly and reach peak concentration _______________________ after administration. Aspirin maintains its antiplatelet effect for approximately 10 days, or as long as platelets normally survive. The effects of clopidogrel last about 5 days.
Oral antiplatelet; between 1 and 2 hours
Aspirin maintains its antiplatelet effect for approximately ____________________, or as long as platelets normally survive.
10 days
The effects of clopidogrel last about __________________.
5 days
are used to lower abnormally high blood levels of lipids, such as cholesterol, triglycerides, and phospholipids. The risk of developing coronary artery disease increases when serum lipid levels are elevated
Antilipemic Drugs
Antilipemic drug classes include:
- bile-sequestering drugs
- fibric acid derivatives
- HMG-CoA reductase inhibitors
- nicotinic acid
- cholesterol absorption inhibitors
HMG-CoA reductase inhibitors
3-hydroxy-3- methylglutaryl coenzyme A reductase inhibitors
HMG-CoA reductase inhibitors also known as the
statins
lower lipid levels by interfering with cholesterol synthesis.
HMG-CoA Reductase Inhibitors (statins)
HMG-CoA Reductase Inhibitors (statins) drugs include:
- atorvastatin calcium
- fluvastatin sodium
- lovastatin
- pitavastatin
- pravastatin sodium
- rosuvastatin
- simvastatin
inhibit the enzyme that’s responsible for the conversion of HMG-CoA to mevalonate, an early rate-limiting step in the biosynthesis of cholesterol.
HMG-CoA reductase inhibitors
an early rate-limiting step in the biosynthesis of cholesterol
conversion of HMG-CoA to mevalonate
used primarily to reduce LDL cholesterol levels and to reduce total blood cholesterol levels
Statin drugs
produce a mild increase in HDL cholesterol levels
Statin drugs
Because of their ability to lower cholesterol levels, statins are indicated for the treatment of __________________________________
primary hypercholesterolemia