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Pharm 2 Test 1
n/a
167
Pharmacology
Graduate
02/05/2011

Additional Pharmacology Flashcards

 


 

Cards

Term
Name the drug that is a positive inotrope and negative chronotrope 
Definition
Digoxin
Term
 How would you test if someone is dig-toxic in an ambulatory setting
Definition
 Take dig level and check pulse; APICAL PREFERRED TO BRACHIAL
Term
 Dig toxicity is considered when the plasma concentration is
Definition
more than 2 nanograms/mL
Term
Clinical Bradycardia is when the pulse is
Definition
<60 bpm
Term
What is the t1/2 of Digoxin
Definition
40 hours
Term
What Vitamin does Warfarin (Coumadin) antagonize
Definition
Vitamin K
Term
What foods contain Vitamin K
Definition
Brussel sprouts, broccoli, spinach, etc
Term
What is the action of Coumadin
Definition

Interferes with hepatic synthesis of vitamin K

dependent clotting factors resulting in an in vivo depletion of clotting factors II (prothrombin),VII, IX & X

Term
What happens in a coumadin overdose?
Definition
You can bleed out
Term
What is INR
Definition
fraction of time it takes blood to clot based on standard
Term
What is the most common target INR (range)
Definition
2.0-3.0
Term
Define PE and DVT
Definition
Pulmonary embolus and Deep vein thrombosis (Blood clots)
Term
What is the significance if a person’s INR goes from 2 to 4 
Definition
It takes longer to clot causing bleeding tendencies
Term
How would you treat a warfarin overdose
Definition
Vitamin K injection
Term
Which OTC drugs should not be used with Coumadin 
Definition
Aspirin
Term
 Why should a patient on warfarin avoid falls and physical traumatic accidents 
Definition
 They have a higher bleeding tendency and their blood is more difficult to clot
Term
Which diuretic conserves Calcium
Definition
Thiazide
Term
Which diuretic wastes Calcium
Definition
Loop diuretics
Term
 What is the thiazide-type diuretic with the longest half-life 
Definition
 Clorthalidone (Hygroton)
Term
 Which diuretic antagonizes aldosterone 
Definition
 Aldactone (spironolactone)
Term
 What is the medication to treat HTN and also liver cirrhosis
Definition
 Aldactone (spironolactone)
Term
How does aldosterone act 
Definition
 Promotes Na & H2O retention and lower plasma [K] by acting on Rc in the principal cells of DT and CD in kidney nephron.  Upregulates ENaC channels increasing apical Na permaebility
Term
What is the difference between Inspra and spironolactone 
Definition
 Inspra has less risk of gynecomastia (No cirrhosis tx?)
Term
Which loop diuretic can be given to a sulfa-allergic patient
Definition
Furosemide (lasix) though this is a weak sulfa drug and Ethacrynic acid (edecrin) which was the first loop diuretic however this has terrible side effects and is rarely used
Term
Name the potassium sparing diuretics
Definition
 Amiloride, Triamterene, Eplenrenone, Spironolactone
Term
Name the potassium wasting diuretics 
Definition
 Furosemide, bumetanide, torsemide, ethacrynic acid, HCTZ, indapamide, clorthalidone, metolazone
Term
Name the combination product of diuretics that have both K+ sparing and wasting 
Definition
  triamterene/HCTZ & spironolactone/HCTZ
Term
Name the product that can be used to treat HTN in pregnant patients in the ambulatory setting 
Definition
 Hydralazine (apresoline) in hospital and methyldopa (aldomet) otherwise
Term
 Why is Aldomet on the Beers list 
Definition
 It can cause bradycardia and exacebate depression in elderly
Term
What is Isordil
Definition
Nitrate
Term
What is ISMO
Definition
 Isosorbide mononitrate which is the most common nitrate taken (2x/day 7 hours apart)
Term
What is Imdur
Definition
 Isosorbide mononitrate taken once a day
Term
Why should Nitro patches be used 12 on and 12 off 
Definition
To avoid tachyphylaxis
Term
Which beta-blocker is most lipophilic 
Definition
Propranolol
Term
Name an example of a Ca blocker that can be used to treat tachyarrhythmia 
Definition
Verapamil
Term
 What is the name of a nitroglycerin pumpspray 
Definition
Nitrolingual pumpspray
Term
How should K-Dur 20 mEq tablets be taken
Definition
with food or mixed in water, do not crush, follow with water
Term
 Why not just eat a banana each day 
Definition

Not enough Vita K

(only 1 mEq/inch of banana)

Term
Name the non-selective beta blockers 
Definition
 Proporanolol, nadolol, pindolol, carvedilol
Term
Name the selective Beta blockers
Definition
bystolic (B-1 selective), metropolol (B1 selective), atenolol ( B1 selective)
Term
Why would you not order an Rx for Inderal if the person is using albuterol 
Definition
Albuterol is usually given to asthmatics and you would never give a B-blocker let alone a non selective one to an asthmatic as it will cause constriction of the airways
Term
What is Torsemide
Definition

Demadex

Loop diuretic

Term
Why must Coreg be taken with food and what are implications for prescribing it
Definition

To decrease the rate of absorption and reduce incident of orthostasis

Prescribed for CHF & HTN

Term
What is Toprol-XL. What are the mg strengths of it  
Definition
 metropolol) B1 selective b-blocker in low doses that is less lipophilic than propranolol.  50mg, 100mg (brand), 25mg (G), 50, 100, 200mg  1mg/mL
Term
Which beta blocker has ISA 
Definition
Pindolol
Term
What is ISA and why is it important
Definition
 sympathomimetic activity; less bradycardia and tiredness because its not a full blocker
Term
What are the ingredients in Aggrenox
Definition
aspirin and extended-release dipyridamole
Term

Which ingredient in Aggrenox is sugar coated, and which is extended release

 

Definition
extended-release dipyridamole
Term
Which drug for HF and/ or HTN is targeted only to African-American patients 
Definition
Thiazide
Term
What are the 3 categories of CCBs
Definition
1.diphenylalkylamines, 2. benzothiazepines, 3. Dihydropyridines
Term
What are the clinical implications for each category of CCBs
Definition
 diphenylalkylamines - Verapamil is the only member of this class that is currently approved in the United States.  It is the least selective of any calcium channel blocker, andhas significant effects on both cardiac and vascular smooth-muscle cells.  It is used to treat angina, supraventricular tachyarrhythmias, and migraine headache.  2. benzothiazepines - Diltiazem (like verapamil) affects both cardiac and vascular smoothmuscle cells; however, it has a less side effects & less pronounced negative inotropic effect on the heart compared to that of verapamil. 3.   Dihydropyridines - This class of CCBs includes the first-generation nifedipine and five secondgeneration agents for treating cardiovascular disease: amlodipine, felodipine, isradipine, nicardipine, and nisoldipine.  All DHPs have a much greater affinity for vascular calcium channels than for calcium channels in the heart. They are therefore particularly attractive in treating hypertension, but NOT arrhythmias.
Term
 Which two groups of CCBs are used as anti-arrhythmic agents
Definition
 1.diphenylalkylamines, 2. benzothiazepines
Term
How do the dihydropyridines totally differ from the other calcium channel blockers
Definition
 have a much greater affinity for vascular calcium channels than for calcium channels in the heart. They are therefore particularly attractive in treating hypertension, but NOT arrhythmias.
Term
What is Covera-HS 
Definition
 Controlled Onset VERApamil to be taken at bedtime.  Actione begin at night and have Cmax during AM hours
Term
What is Verelan PM
Definition
Verapamil
Term
Why does verapamil cause constipation 
Definition
Blocks Ca in gut in smooth muscles
Term
 What’s the effect of taking grapefruit juice and Procardia together 
Definition
 dizziness or exaggerated response to DHP as grapefruit juice is a CYP3A4 inhibitor
Term
 What is the meaning of the word: proarrhythmia
Definition
 tendency of antiarrhythmic drugs to facilitate emergence of new arrhythmias
Term
What is the name of the CCB and atorvastatin 
Definition
Caduet
Term
 What is the name of the dihydropyridine CCB and ACE inhibitor
Definition
Lotrel
Term
How do ACE-I work 
Definition
  block conversion of AT I > AT II and decreases aldosterone release from adrenal glands
Term
 How do ACE-Is compare to ARBs 
Definition
 Same effect different MOA.  ARBs block at AT I Rc where ACE-I block ACE
Term
 Why must ACE-Is not be used to treat HTN in pregnant patients 
Definition
can cause injury or death to fetus
Term
What is ACE-I problem with angioedema 
Definition
can cause swelling of vessels around mouth, tongue and nasal flds creating a red color and could cause laryngeal swelling
Term
 What is the role of increased body bradykinin in the adverse effects of ACEIs, such as dry cough and angioedema
Definition
 increased BK can cause a cough.  Increase BK is due toACE blkd b/c ACE breaks down BK
Term
 Why do ACE-I cause hyperkalemia 
Definition
They are K-sparring; Suppression of angiotensin II leads to a decrease in aldosterone levels. Since aldosterone is responsible for increasing the excretion of potassium, ACE inhibitors ultimately cause retention of potassium
Term
 Why are thiazides and loops used along with ACE-I
Definition
 To balance out K loss or gain
Term
What is the ending of the names of the ACE inhibitors 
Definition
-pril
Term
 Why is the route of elimination of Monopril an important factor to remember
Definition
 Fosininpril is eliminated 50% in urine and feces so it is an advantage to those renally impaired.
Term
What are the common endings of the names of the ARBs 
Definition
-sartan
Term
Can ARBS be used together with ACEIs 
Definition
Yes as an additive effect
Term
What are some advantages of ARBs over ACEIs 
Definition
less cough
Term
 What is the mechanism of action of Apresoline 
Definition
arteriolar vasodilator only and decreases afterload.  Should be given with b-blocker to reduce reflex tachycardia
Term
 What is drug-induced SLE that can occur with high doses of Apresoline (hydralazine)
Definition
 systemic lupus erythematosus which is reversible upon d/c of drug
Term
What happens to the adverse effects when the drug is discontinued upon appearance of this SLE 
Definition
disappear
Term
Explain the value of BiDil, considering the two components (Bi =  2 and dil = dilation)
Definition
 Isosorbide dinitrate/hydralazine is a fixed dose combination drug treatment specifically indicated for African Americans with congestive heart failure.  Designed to reduce the pill burden
Term
 Catapres: How does it work in controlling blood pressure 
Definition
 central a-2 agonist decreasing NE and blocking cholinergic transmission by being an agonist on a-2
Term
How would you explain the use of Catapres TTS patch to the patient.TTS = Transdermal Therapeutic System 
Definition
 there are 2 patches, 1 is the drug and 1 is an overlay, apply x1/week and rotate sites
Term
What is rebound HTN
Definition
an increase in blood pressure in response stopping or reducing high blood pressure medication
Term
Where are alpha-1 receptors located 
Definition
 radial mm of eye, arterioles, bronchioles, veins, trigone mm of bladder, ureter, uterus, male sex organs, skin, salivary glands
Term
What are the functions of a-1 Rc
Definition
contractions
Term
  Why are a-1 Rc such a good target for drug therapy 
Definition
when you block them, you can dilate bld vessels or relax contractions
Term
What is the indication for Hytrin & Cardura 
Definition
BPH & HTN as adjunct, never use alone
Term
Whats BPH
Definition
benign prostatic hypertophy
Term
 Why should BPH patients not take an OTC cold pill, such as Nyquil, or Benadryl 
Definition
 decreases effectiveness of Cardura and hytrin in treating BPH so patient can’t pee
Term
 Why should a person with BPH not take an adrenergic agonist (sympathetic stimulant) or anticholinergic
Definition
 decreases effectiveness of Cardura and hytrin in treating BPH so patient can’t pee
Term
 What is the role of weight, salt, stress reduction, and exercise in the treatment of HTN 
Definition
The first 3 need to be reduced as they contribute and exacerbate it and exercise needs to be increased as it can help lower HTN
Term
 The elderly male patient has HTN and BPH. Explain the compelling indication to use an alpha-1 blocker for him 
Definition
 A-1 blocker with vasodilate bld vessels decreasing HBP and relax the trigone muscle in the bladder to assist in urinating with BPH
Term
What is the main indication for Lopid (Gemfibrozil) and Tricor.
Definition
High TG
Term
 How does Questran (Cholestyramine) work
Definition
 Have anion exchange resins that bind (-) charged bile acids and bile salts in the S.I.  The resin/bile complex is excreted in feces.  This prevents bile acids from returning to the liver by enterohepatic circulation.  Lowering bile acid [ ] causes hepatocytes to increase conversion of cholesterol to bile acids, resulting in replenished supply of these compounds.  The intracellular [chol] decreases.  This activates an increased hepatic uptake of chol-containing LDL particles leading to a fall in plasma LDL
Term
The “statins”: How do they work 
Definition
 They inhibit the first committed enymatic (rate-limiting) step of cholesterol synthesis, thereby lowering elevated LDL chol levels resulting in reduction of coronary events
Term
What is rhabdomyolysis
Definition
 breakdown of muscle fibers resulting in the release of muscle fiber contents (myoglobin) into the bloodstream
Term
 What is the effect of grapefruit juice on statin family of medications 
Definition
Will increase its effects by inhibiting the metabolism
Term
 What is the advantage of Pravachol over the other statins
Definition
less drug interactions
Term
What is the mechanism of action of Zetia  
Definition
 Inhibits absorption of cholesterol
Term
What is the name of the drug that combines ezetimibe with a statin 
Definition
Vytorin
Term
Describe Vaughn Williams classification I
Definition

Na channel blockers

                                               i.     IA – slow rate of AP, slow conduction, prolong AP, increase ventricular effective refractory period

                                             ii.     IB – decrease duration of AP by shortening reploarization

                                            iii.     IC – depress rate of rise in AP, cause conduction slowing but have little effect on duration of membrane AP or vent effective refrac period

Term
Describe Vaughn Williams classification II
Definition
 Beta Blockers – diminish phase 4 depolarization, depressing automaticity, prolonging AV conduction and decreasing HR and contractility
Term
Describe Vaughn Williams classification III
Definition
 Amiodarone Sotalol and others – prolong duration of APw/o altering phase 0 of depolarization or RMP.  Prolong effective refrac period
Term
Describe Vaughn Williams classification IV
Definition
Ca channel blockers – decrease rate of phase 4 spontaneous depolarization and slow conduction in tissues not dependent on Ca currents (AV node)
Term
Which channels are blocked by Class I antiarrhythmic drugs 
Definition
Na
Term
Which channels are blocked by Class II antiarrhythmic drugs 
Definition
Beta Rc
Term
 Which channels are blocked by Class III antiarrhythmic drugs 
Definition
K channels
Term
Which channels are blocked by Class IV antiarrhythmic drugs 
Definition
CCB
Term
What’s the product that has Class III antiarrhythmic effects as well as non-selective beta-blockade
Definition
Sotalol??
Term
 What is the t1/2 of amiodarone 
Definition
50 days
Term
 If a patient takes one tablet of amiodarone daily, how many months would it take to get to steady-state 
Definition
8 months
Term
 What is the difference between Betapace and Betapace AF 
Definition
 Betapace is a racemic mix of d and l isomers and the l isomer is a non selective bete blocker.  Betapace AF is for A-flutter and a-fib
Term
Why shouldn’t Betapace be given to a person with emphysema or asthma 
Definition
 because it is a non selective beta blocker and will constrict the airways
Term
What is a normal plasma concentration for K+   
Definition
3.5-5 meq/L
Term
Which drugs should be tapered before stopping?
Definition
SSRIs, antipsychotic drugs, B-blockers, Clonidine, any medication that effects the CNS
Term
What are schedule II controlled substances?
Definition

High abuse potential with severe psychic or physical dependence.

i.e. opium, morphine, methadone, cocaine, oxycodone, amphetamines, methylphenidate

Term
What are schedule III controlled substances?
Definition

Have an abuse potential less than scehdule II.

i.e. Tylnols #3, vicodin, anabolic steroids

Term
What are schedule IV controlled substances?
Definition

Less abuce potential than schedule III. 

i.e. Phenobabital, benzodiazepines, lunesta, ambien

Term
What are ceiling diuretics
Definition
They have a limit to how far you can push the dosage
Term
What is the best drug class to treat HTN AND HIgh Risk Angina
Definition
Beta-blockers
Term
What is the best drug class to treat DB & HTN?
Definition

ACE-I and then ARBs

 

Term
What is the best drug class to treat HTN & recurrent stroke?
Definition
ACE-I
Term
What is the best drug class to treat HTN & HF?
Definition
low dose b-blockers
Term
What drug class is best for treating HTN & chronic renal disease
Definition
ACE-I & ARB
Term
What compelling reason would you have to not use diuretics as a first-line against HTN therapy
Definition

DB or chronic renal disease - ACE-I or ARB

Elderly men w/ BPH - a-1 blockers

High Risk angina - B-blockers or CCBs

Previous MI - B-blockers or ACE-I

Term
Why are thiazides useful for elderly HTN pts w/ osteoporosis
Definition
They increase systemic Ca
Term
What are the adverse effecs of Thiazide diuretics
Definition

HypOkalemia

HypERuricemia

HypERglycemia

HypOmagnesemia

Term
HCTZ
Definition

Decreases Na, K, Mg; Increases Ca

Diuretic used for Edema, CHF, HTN

Term
Name thiazide-like diuretics
Definition

Indapamide, Clorthalidone (Which is longer lasting - 24 hrs), Metolazone (works near bowmans capsul)

 

All have are ceiling diuretics and should be added as last resort

Term
Which b-blocker has peripheral vasoconstriction causing white clammy hands
Definition
Propranolol
Term
Why is propranolol dangerous to DB pts?
Definition
It masks hypOglycemia symptoms
Term
Which b-blocker is least likely to cause groginess and depression and why
Definition
Atenolol becaue it is the most water soluble (Not lipholic)
Term
What patient type are ACE-I most effective on
Definition
young, white HTN patients
Term
What are adverse effects of ACE-I
Definition
dry cough, rash, altered taste, hypERkalemia, angioedema, toxic to fetus
Term
When are ACE-I contraindicated
Definition
Bilateral renal artery stenosis
Term
How do ACE-I and ARBs effect DB pts
Definition
decrease nephrotoxicity
Term
If a low dose ACE-I is not working, what is your next choice?
Definition
combo it with a diuretic
Term
Which class of CCB is the least effective
Definition
Diphenylalkyamines (Verapimil)
Term
What suffix is associated with CCB DHPs
Definition
-ipine
Term
What would you counsel pts taking CCB DHP against?
Definition
Grapefruit juice
Term
What are adverse effects of a-1 blockers
Definition
reflex tachycardia and 1st does syncope
Term
How would you counsel a pt taking clonidine?
Definition
Chew sugarless gum, drink fluids (as it causes dry mouth), metamucil, fiber and prunes (as it causes constipation)
Term
What is the most famous B.A.S.
Definition
Questran
Term
What is the implication for Phenytoine
Definition
It is a class IB antiarrythmic drug also used to treat epilepsy.  It is used to counteract digoxin toxicity when pt is also experiencing arrythmias
Term
Which drug antiarrhythmic drug reselmbles strx of T4
Definition
Cordarone
Term
Loop Diuretics
Definition

*Potent Diuretics

MOA: Inhibit Na+/K+/2Cl- co-transport in the ascending loop of Henle

Decreases Na+, K+, Mg++, Ca++

 

Furosemide, Bumetanide, Torsemide, Ethacrynic acid

Indications: Edema, CHF, HTN

Term
Thiazide and Thiazide-type diuretics
Definition

K wasting

Indications: Edema, CHF, HTN

MOA: Inhibit reabsorption of NaCl in early DCT

Decrease Na, K, Mg  Increase Ca

Ideal for women w/ Osteoporosis & HTN

These are also Vasodilators

HCTZ, Indapamide, Chlorthalidone, Metolazone

Term
K Sparing Diuretics
Definition

MOA:Inhibit Aldosterone reabsorption of Na & secretion of K @ CD

Indications: Edema, HTN, CHF

Spironolactone, Eplerenone

MOA: Na channel blockers @ CD

Triamterene, Amiloride

Term
Beta Blockers
Definition

Class II Antiarrythmic

*DO not abruptly d/c; taper down over weeks

Not good for diabetics

propranolol, nadolol, pindolol, bystolic (B1), Metropolol (B1), atenolol (B1), Carvedilol

Term

Nifedepine

(Procardia)

Definition

CCB DHP for HTN or Angin

Potent peripheral vasodilator

Do not use grapefuit juice

Term

Lotrel

(Amlodipine/benaepril)

Definition

Combo CCB DHP & ACE-I

BP control via 2 different MOAs

Term

Verapamil

(Calan, Isoptin, Verelan, Covera)

Definition

CCB non-DHP

Use Reg tabs for HTN, vasospastic unstable & chronic stable angina, Atrial arrhythmias

Use SR tabs for HTN

Do not take w/ digoxin (may increase dig tox)

Take SR tabs with food, may cause constipation

Term

Enalapril

(Vasotec, enalaprilat)

Definition

ACE-I

K sparring diuretic used for HTN

**DO NOT give in 2 or 3 trimesters (Use methyldopa or apresoline instead)

PRODRUG

Dosed QD-BID

Injection or tabs

SE: cough, angioedema

Useful in DB patients as it is nephro protective

Enhances vasodilation via BK

Term

Ramipril

(Altace)

Definition

ACE-I

K sparring diuretic for HTN

**DO NOT give in 2 or 3 trimesters (Use methyldopa or apresoline instead)

For pts who can not swallow (take with apple sauce)

SE: cough, angioedema

Enhances vasodilation via BK

Useful in DB pts as it is nephro protective

Term

Losartan

(Cozaar)

Definition

ARB used for HTN

DO NOT give during 2 or 3 trimester (Use methyldopa or apresoline instead)

less cough due to decreased BK and can be used an additive to ACE-I

This was the first to go generic.

Useful in DB as it is nephroprotective

Term

Candesartan

(Atacand)

Definition

ARB for HTN

 

DO NOT give during 2 or 3 trimester (Use methyldopa or apresoline instead)

less cough due to decreased BK and can be used an additive to ACE-I

 

Useful in DB as it is nephroprotective

Term

Clonidine

(catapres)

Definition

Anti-hypertensive

MOA: (similar to methyldopa) central a-2 agonist which decreases NE and cholinergic a-2 agonist which blocks cholinergic transmission

Dosed by patches or tabs

Term

Hydralazine

(Apresoline)

Definition

Anti-hypertensive

Arteriolar vasodilator - only works in arteries and decreases afterload

Should be given with b-blocker to decrease reflex tachycardia

Can be used for pregnants pts in hospital

SE: SLE

Term

Fenofibrate

(Tricor, Antara, Lofibra)

Definition

Lipid lowering agent

Caution against combo w/ statins as it can cause rhabdomyolysis

Term

Niacin

(niaspan)

Definition

Lipid lowering agent

Take HS after low fat snack.  E.R. minimizes flushing

Term

Ezetimibe

(zetia)

Definition

Lipid lowering agent

Taken once daily and has a very small efect on reduction of LDL

MOA: inhibits absorption of chol

Term

Ezetimibe/simvastatin

(Vytorin)

Definition
Lipid lowering agent as adjunctive therapy
Term

Flecainide

(Tambacor)

Definition

Class IC antiarrythmic drug (potent)

MOA: blocks Na channels

Dose every 12 hours as scheduled or can produce tachycardia

 

Term

Amiodarone

(cordarone, pacerone)

Definition

Anti-arrhythmic drug which has characteristics of all 4 Vaughn classes (mostly class III, K blockers)

Used for life threatening Vent arrhythmias and A-fib

T1/2 of 50 days.  Steady State @ 8 mos

Similar Strx to T4

Do not take with digoxin, warfarin, grapefruit juice

SE: Smurfs syndrome

POtential for fatal toxicity

Term

Bidil

(ISDN & hydralazine)

Definition

Combo anti-hypertensive & nitrate)

Dose 1 tab TID

Used as HF adjunct in African Americans

Term
-pine
Definition
CCB
Term
-pril
Definition
ACE-I
Term
-sartan
Definition
ARBs
Term
-statin
Definition

HMG-CoA reductase Inhibitor

Lipid lowering agent

Term
-ide or -one
Definition
Diuretic
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