Exam 3 Flashcards

(48 cards)

0
Q

Procainamide

A

Class I sodium channel blocker
Like quinidine
Does not enter CNS
Lupus like in slow acetylators

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1
Q

Quinidine

A
Class Ia sodium channel blocker 
Used for all arrhythmias
Decrease all muscle fxn
Anticholinergic effects (antiDUMBBELS)
SE: GI nausea vomiting
       Anorexia
       CNS- tinnitus, altered color vision
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2
Q

Disopyramide

A

Class Ia sodium channel blocker
Strong antivagal effects
Antimuscarinic effects opp dumbbels

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3
Q

Lidocaine

A
Class Ib sodium channel blocker
IV
Less likely to cause arrhythmia
Can enter CNS (tremors, seizures)
DOC for ventricular arrhythmias
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4
Q

Mexiletine

A

Class Ib sodium channel blocker

Like lidocaine but no first pass effect

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5
Q

Propanolol

A

Class II beta blocker
B1 in heart
Decreases firing rate of SA node
SE: bradycardia, hypotension, bronchospasms

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6
Q

Metoprolol

A

Class II Beta blocker
More selective, less B2 effects
SE: bradycardia, hypotension

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7
Q

Esmolol

A

Class II beta blocker
More rapid onset
SE: bradycardia, hypotension, bronchospasms

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8
Q

Sotalol

A

Class III K channel blocker

Beta blocker

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9
Q

Amiodarone

A
Acts like all 4 classes
Most effective antiarrhythmatic
 *DOC in cardiac arrest*
SE: potentially fatal pulomary fibrosis
       Liver damage
       Corneal deposits, optic neuritis
       Skin deposits (blue gray coloration)
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10
Q

Dronedarone

A

Analog of amiodarone

Fewer SEs, less efficacy

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11
Q

Verapamil
Diltazem
Nifedipine

A

Class IV Ca channel blockers

All but ventricular arrhythmias

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12
Q

Adenosine

A
Coronary vasodilator
Given IV
decreases firing rate of AV node
T1/2 of 10 seconds
DOC for atrial tachycardia
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13
Q

glyceryl trinitrate

Nitroglycerin, GTN

A
Treats angina
Rapidly dilates all BVs
(GTN - NO - guanylate cyclase - cGMP - vasodilation)
SE: hypotension, skin flushing, headache
   Rapid tolerance to NO
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14
Q

Isosorbide dinitrate

A

Treats angina
Slow release nitrate formulation
Oral

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15
Q

Digoxin

A

Inhibits Na/K ATPase
Causes Ca retention indirectly
Treats cardiac insufficiency by increasing contractility
SE: yellow/green vision tint
hallucinations
severe nausea, all intensifies with hypokalemia

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17
Q

Sildenafil
Vardenafil
Tadalafil
Avanafil

A

Inhibitors of type-5 cGMP phosphodiesterase
This corpus callosum PDE breaks down cGMP (smooth m relaxer)

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18
Q

Citric acid
EDTA
EGTA

A

Ca chelators

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19
Q

Exonaparin

Dalteparin

A
Partially purified heparin
T1/2 of 4 hours
More effect on Xa than thrombin
Less side effects, more predictable D-R
May cause spinal hematoma w/ tap or anesthesia
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20
Q

Fondaparinux

A

Synthetic heparin
T1/2 = 17 hours
Acts only on factor Xa
Can cross placenta, given IV

21
Q

Hirudin

A

Anticoagulant in leech saliva

Directly inhibits enzymes and thrombin

22
Q

Bivalirudin
Desirudin
Argatroban

A

Synthetic hirudin analogs
Inhibits thrombin
Treats HIT

23
Q

Warfarin

A
Vitamin K analog
Inhibits enzymes that recycle vitamin K
Must wait for clotting factors to degrade before it works
   (6 hours to 60 hours)
Metabolized by P450
Pregnant category X, OD give vit K
24
Q

Dabigatran

A

Prodrug
Thrombin inhibitor
Works in 1 hour
Metabolized by P450

25
Rivaroxaban | Apixaban
Factors Xa & Xb inhibitors respectively Bleeding after spinal tap surgery Rapid onset
26
Vorapaxar
Thrombin receptor blocker Prevents aggregation of platelets SE: CNS hemorrhage
27
Ticlopidine Clopidogrel Prasugrel Ticagrelor
Platelet inhibitor inhibits ADP receptor SE: neutropenia agranulocytosis
28
Abciximab Tirofiban Eptifibatide
Fibrinogen receptor (GP IIb/IIIa receptor) inhibitors Prevents aggregation of platelets Given IV SE: thrombocytopenia
29
Aspirin
aka thrombin A2 COX inhibitor Inhibits thromboxane A2 synthesis
30
Cilostazol | Dipyridamole
PDE inhibitor | PDE breaks down cAMP, decreases platelet agg
31
Anagrelide
Decreases platelet formation, maturation, and number
32
Streptokinase | Urokinase
Urine plasminogen activator Stimulate endogenin Thrombolytic agent
33
TPA
Tissue plasminogen activator Thrombolytic agent Converts plasminogen to plasmin Hydrolyzes fibrin, degrades fibrinogen & fac V, VII
34
Heparin
Binds to antithrombin III and increases its affinity for clotting factors Made from cow lung and pig intestine slurry Low doses - inhibits factor Xa and forms thrombin High doses - inhibits factor IXa, XIa, XIIa and inhibits thrombin IV or subQ, T1/2 of 1 hr Degraded by heparinase, OD treat with protamine sulfate Long term use - osteoporosis and HIT
35
Epoietin alfa Darbepoietin Peginesatide
Cause excess of RBCs | Increase BP, clotting, MI, stroke
36
Hydroxyurea
Increase formation of fetal Hb fHb doesn't sickle Mutagenic, preg cat D
37
-statins
Prodrugs, most effective LDL lowering agent Inhibits HMG CoA reductase - RLS in cholesterol synthesis No cholesterol synesis, increase LDL receptors on cell, increase LDL uptake, decreases by 25-60% lowers VLDL synth SE: myositis, at worst rhabdomyolysis liver toxicity teratogenic, preg cat X some memory loss
38
Niacin | Nicotinic Acid, Vitamin B3
Inhibits enzymes for VLDL synthesis Increases HDL SE: skin flushing and itching (prevented by aspirin) increase uric acid, diabetes
39
Cholestyramine Colestipol Coleselevam
Highly charged cationic resins Irreversibly bind to bile acids in gut, excreted Decrease circulating cholesterol Increases LDL receptors SE: binds acidic drugs (digoxin) and oral anticoagulants decreased absorption of fat soluble vitamins
40
Gemfibrozil | Fenofibrate
``` Best triglyceride lowering agents Binds to peroxisome proliferator acting receptor (PPAR) Increase transcription of LPlipase SE: GI upset Displacement of warfarin ```
41
Omega 3 fatty acids | Icosapent ethyl
Decreases triglyceride synthesis by inhibiting enzymes
42
Lomitapide
Inhibits assembly of VLDL in liver Enzyme and a transporter Hepatotoxic
43
Mipomersen
Antisense oligonucleotide Binds to mRNA for APOb Prevents APO synthesis
44
Ezetimibe
Blocks cholesterol transporters in intestine
45
Sitostanol
Looks like cholesterol, blocks uptake | Found in some margarines
46
Orlistat
Inhibits GI & pancreatic lipases Decreases fat absorption from gut Loose stool
47
Olestra
Unabsorbable fat.
63
Aminocaproic acid | Tranexamic acid
Hemolytic agent Enhance clotting in hemophiliacs or blood loss Inhibit plasminogen Latter is more potent