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33 Cards in this Set
- Front
- Back
Formula for Stroke Volume
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SV = CO X HR
on the PV loop: EDV-ESV |
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Formula for Stroke Index
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SV/BSA = SI
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Formula for SVR
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SVR =
[(MAP - CVP)/CO] x 80 |
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Coronary Perfusion Pressure Formula
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CPP =
DBP - LVEDP |
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Mean Arterial Pressure Formula
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MAP = [(2X DBP) + SBP]/3
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Ejection Fraction Formula
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EF = [(EDV-ESV)/EDV] x 100
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Pulmonary Vascular Pressure Formula
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PVR =
[(PAP - PCWP)/CO] x80 |
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Carry capacity of Oxygen in a Formula
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CaO2 =
(1.34 x Hbg x % SaO2) + (PaO2 x 0.003) |
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Cardioselective Beta Blockers
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Metoprolol
Esmolol Atenolol Acebutolol |
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Class I antiarrhythmics do what?
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Block Na-channels; affects slope of Phase 0 and lengthens Phase 4
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Class Ia antiarrhythmics are _______depressants and _______ depolarization
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moderate
prolong |
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Class Ib antiarrhythmics are
_______depressants and _______ depolarization |
weak depressant
shorten |
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Class Ic antiarrhytmics are ________depressants and
____________depolarization |
strong depressants and have no effect on depolarization
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Qunidine, procainamide, dsopyramide
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Class Ia drugs
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Lidocaine, mexifiline, phenytoin, tocainide
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Class Ib drugs
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Flecinide, propafenone, moricizine
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Class Ic drugs
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Class II drugs
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esmolol, inderal, metoprolol
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blocks sympathetic stimulation
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decreases NE/epi which decreases cAMP, which decreases Ca+2 --> prolongs absolute refractory and decreases conduction thru AV node
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Class II antiarrhythmics work on...
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Lengthens phase 2 of ventricular;
Works on Phase 0 & 4 in nodal |
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Class III - block
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K-channels;
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Class III work on
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Phase 3 on ventricular and nodal
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Class III drugs
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Amiodarone
bretylium Sotalol ibutilide dofetilide |
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Amiodarone side effect
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Amiodarone pulmonary toxicity due to enhanced O2 free radial formation.
Increased risk for ARDS if you used this drug during sx |
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verapamil ____digoxin elimination and could cause ________
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decreases; digoxin toxicity
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Class IV - blocks
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Calcium Channels
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Class IV - works on ____phase
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phase 0 in the nodal and lengthens phase 2 in ventricular
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NON-dihydropyridines prolong AV refractoriness, examples of...
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verapamil
diltiazem |
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Dihydropyridines produce profound _________ and don't have much effect on AV nodal refractoriness
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vasodilation
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Dihydropyridines examples
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amlodipine; fenodipine; nimodipine; nicardipine; nifedipine
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Nimodipine (Nimtop) more specific for ______ vasodilation
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CEREBRAL
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Class V antiarrhythmics
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Adenosine, Atropine, Digoxin
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Digoxin
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increases INTRACELLULAR calcium; inhibits the Na-K pump
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Therapeutic margin for Digoxin
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Narrow: 0.9-2.0ng/mL
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