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65 Cards in this Set

  • Front
  • Back
This systems supplies O2 and nutrients to the cells and removes metabolic wastes to the excretory organs
The Cardiovascular System
Comprised of the sympathetic and opposing parasympathetic system
Autonomic Nervous System
The sympathetic nerve ends secrete
norepinephrine
The parasympathetic nerve ends secrete
Ach to activate cholinergic receptors
contains it’s own conduction system w/o stimulation from the CNS
myocardium
this activity always precedes mechanical activity
Electrical
The dominant pacemaker of the heart located in the upper wall of the
right atrium
This forms the P wave on the EKG
SA node
The ability to generate pacemaking stimuli is Called
automaticity
Depolarization slows when it reaches the AV node to allow the blood in the atria to enter the ___________
ventricles
Class I Antidysrhythmics
Sodium channel blockers
Class II Antidysrhythmics
Beta-receptor blockers
Class III Antidysrhythmics
Potassium channel blockers
Class IV Antidysrhythmics
Calcium channel blockers
________________ is a Class 1b – suppresses automaticity of the conduction tissue by increasing the electrical stimulation threshold of the ventricle
Lidocaine
There are three different Class II (Beta-blocker) divisions… name them
cardiac specific (propranolol), non-cardiac specific (metoprolol), and combination (labetalol)
These block the movement of potassium during the 3rd phase of the action potential (cell membrane recovery), prolonging repolarization and the refractory period
Class III – Potassium Channel Blockers (Amiodarone)
These inhibit the movement of calcium through the slow calcium channels of the SA and AV nodes during the 2nd phase of the action potential
Class IV: Calcium Channel Blockers (Cardizem)
Name some Unclassified Anitarrhythmics
atropine, dopamine, digoxen, magnesium, adenosine
What does Atropine block the effects of?
the effects of acetylcholine on the SA and AV nodes
Which drug causes asystole briefly?
adenosine
Which class of drugs is most likely to exacerbate the symptoms of asthma?
Beta receptor blockers
Name symptoms indicative of digoxin toxicity
blurred vision, confusion, irregular pulse
______________ acts on angiotensinogen to cleave off the peptide angiotensin I
renin
_________________ is a potent vasoconstrictor and the principal pressor of the renin-angiotensin system
Angiotensin II
Normally renal ___________ excretion is increased in response to elevations in arterial pressure and to a sodium or volume load
sodium
Hypertensive individuals may exhibit a diminished ability to excrete a __________ load
sodium
True or false - Essential hypertensive pts often have elevated Na+ levels in blood cells and other tissues
True
Exacerbating Factors of HT
obesity, diet, EtOH, smoking, sedentary lifestyle, hypokalemia
________________ is used to control ventricular response and rate in A-fib and A-flutter. Also used for HTN, and as antianginals
beta-blockers
Consequences of Uncontrolled HTN
CAD, left ventricular hypertrophy, Heart failure, strokes and TIA, kidney failure, peripheral artery disease, retinopathy
Pharmacologic Management of Hypertension includes
diuretics, sympatholytics, ACE inhibitors, ARBs, Ca channel blockers, and direct rennin inhibitors
Diuretics produce increased urine flow by inhibiting ____________&_____________ reabsorption from the kidney tubules.
sodium and water
Name the classes of diuretics
Thiazide, Loop, Osmotic, Carbonic anhydrase inhibitors, Potassium-sparing
This is an example of a Loop Diuretic which produces more dieresis… Often used in CHF and less often in HTN
Lasix
__________ Reduce HR, contractility, and rennin release
Beta-Blockers… Nonselective agents can cause bronchial constriction.
These cause Venous and arterial dilation as well as relaxation of the muscles in the bladder neck and prostate… generic ending of “zosin”
Alpha 1 Adrenergic Blockers
Dec sympathetic outflow of norepi resulting in vascular dilation and reduced HR
Alpha 2 agonists… ie Clonidine (Catapres)
This class inhibit the formation of angiotension II and block the release of aldosterone… end in “pril”
ACEIs
Act on the renin angiotensin system and block angiotensin II from the AT1 receptors while ACEs inhibit the formation of angiotensin II… end in “sartan”
ARBs
Calcium Channel Blockers end in
“dipine”
_________ is used for hypertensive emergencies
Nitroprusside
An example of a Direct Renin Inhibitor is___________
Aliskiren (Tekturna)
_________________ generally have a high-renin HTN and respond well to all anti-hypertensive agents
Caucasians
____________ __________ generally have a low-renin HTN and respond better to CCB, alpha blockers and diuretics
African Americans
The ________________ population is twice as sensitive to beta-blockers as the Caucasian population
asian
__________________ Americans have a reduced response to beta blockers
native
Acute CP from insufficient O2 to a portion of the myocardium
angina pectoris
Typically ________ _______ is reported as steady and intense with a crushing or constricting sensation that radiates to the L shoulder and arm. Sometime moving in the jaw or back
angina pectoris
Used to terminate an acute episode or decrease frequency of attacks
anti-anginals
Goal is to reduce myocadial O2 demand by
slowing HR, dilating veins, reducing contractility, and lowering BP
Anti-Anginal drug classes
Beta Blockers, CCB, and organic nitrates
These Relax smooth muscle to produce valsodilation on veins and arterioles
nitrates
A __________ can become dislodged and become an embolus
thrombus
Drugs for Circulatory Disorders
Anticoagulants, Antiplatelets, Thrombolytics, Antilipemics, Peripheral Vasodilators
What is the time interval between tests on submarine cable?

A. Annually
B. Semiannually
C. Quarterly
D. Monthly
A. ANNUALLY
These Prevent thrombosis in the arteries by suppressing platelet aggregation
antiplatlets
Substances that dissolve or break down a thrombus or blood clot
thrombolytics
Increase blood flow to the extremities & are used in PVD of venous and arterial vessels
peripheral vasodilators, ie tolazoline (Priscoline), isoxsuprine (vasodilan), nictinyl alcohol, papaverine (Cerespan)
What is the antagonist of Heparin?
Protamine sulfate
What class prevents clots?
anticoagulants
What class prevents platelet aggregation?
antiplatelets
What class dissolves clots?
finbrinolytics
This disease is where the heart cannot pump enough blood to meet the needs of the body
CHF
Drugs used for CHF
ACEs, B-Blockers, Diurectics, BiDil, Vasodilators, Cardiac glycosides, Phosphodiesterase inhibitors