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