Pharm Flashcards
What are the 2 main disease-modifying antirheumatic drugs?
- Methotrexate
- Anticytokines (Enbrel)
What are the 4 side effects of Methotrexate?
- Hepatic dysfunction
- GI disturbances
- Thrombocytopenia
- Renal dysfunction
What can reduce adverse effects of Methotrexate?
- Folic acid
Do anticyotkines have major side effects?
NO
Name the 6 other types of disease modifying antirheumatic drugs.
- Leflunomide (Arava)
- Infliximab (Remicade)
- Anakinra (Kineret)
- Sulfa drugs (Imunnosuppresants)
- Antimalarials (Chloroquine)
- Cyclosporine (Neoral)
What is the “alternative” therapy for RA?
Gold
What is the action of Leflunomide (Arava)?
Inhibits T and B cells
What drug is combined with Infliximab (Remicade)?
Methotrexate for cancer
What is the action of Anakinra (Kineret)?
Blocks interleukin receptors
Prevents bone erosion and cartilage destruction
What is the side effect of Leflunomide, Infliximab, Anakinra?
Increased risk of serious infection
What is action of sulfa drugs?
GI problems
Skin problems
Bone marrow depression
What are 2 types of sulfa drugs?
Penicillamine
Imuran
What are the side effects of antimalarials?
Mental status changes
Retinopathy
Muscle Weakness
Decreased DTRs
What is the antimalarial drug name?
Chloroquine
What is the action of cyclosporine?
Potent immunosuppresant
Reduces T and B cell activation
What are the side effects of cyclosporine?
HTN
Nephrotoxicity
What 3 classes of drug does cyclosporine interact with?
Calcium channel blockers
Antibiotics
Corticosteroids
What are the 3 adverse effects of gold therapy?
Blood disorders
Renal dysfunction
Skin problems/ dermatitis
What is the endogenous glucocorticosteroid?
Cortisol
Hydrocortisone
What are the 2 main synthetic corticosteroids?
Prednisone
Dexamethazone
What is the action of glucocorticosteroids?
- Potent anti-inflammatory
via prevention of:
Capillary dysfunction
Edema formation
Migration of leukocytes and macrophages to trauma area
What is the most commonly used administration of glucocorticosteroids?
Intra-articular
What is the advantage and disadvantage of intra-articular injection?
- Decreased risk of side effects
- Accelerated joint destruction and tendon atrophy
What are many side effects of corticosteroids?
- Adrenal insufficiency
- Immunosuppresion
- Steroid buzz
- Cataracts
- Cushingoid state
- Fluid retention
- Hyperglycemia
- Osteoporosis
- Myopathy
- GI disturbances
Describe adrenal insufficiency.
Adrenal gland cannot replace removed corticosteroids
- Malaise
- Arthralgia
Why do cataracts develop following corticosteroid use?
- Increased intraocular pressure
Describe a cushingoid state.
- Fat/ moon face
- Acne
- Striae on extremities
Describe non pharmacological prevention of osteoporosis.
- Vitamin D and calcium intake
- WB exercise
- Smoking cessation
- Decrease alcohol and caffeine intake
Why does caffeine affect demineralization?
Increased calcium excretion
What is a major risk factor for osteoporosis?
Smoking
Identify 4 types/ forms of pharamacological management of Osteoporosis.
Biphosphonnates
Teriparatide (Forteo)
Calcitonin
Hormone replacement therapy
What is the action of biphosphonnates?
Inhibits osteoclastic bone resorption increasing bone mass density and reducing risk of fracture
What are 3 side/ adverse effects of biphosphonnates?
- GI problems
- Myalgias
- Esophageal lesions
What are instructions for administration of biphosphonates?
Take at least 30 mins before breakfast with full glass of tap water
Remain standing or sitting for 30 minutes
What are 3 types of biphosphonnates?
- Aldenronate (Fosamax)
- Risedronate (Actonel)
- Etidronate (Didronel)
What is the action of Teriparatide (Forteo)?
- Parathyroid hormone (raloxifene) – selevtive antiestrogen agent
- Prevents and treats osteoporosis in postmenopausal women
What are 2 side effects?
- Hot flashes
- Leg cramps
What condition contraindicates use of Teriparatide (Forteo)?
Pts at risk for osteosarcoma/ Paget’s disease
What is the action of Calcitonin?
Decreases osteoclastic via hormone
How is calcitonin administered?
- Nasal spray
What are 4 side effects of calcitonin?
- Pain
- Myalagias
- Headache
- Nasal symptoms
May calcitonin be used with osetosarcoma/ Paget’s disease?
Yes!
What type of drug management for osteoporosis is mainly discontinued?
Hormone replacement therapy
What are the risks of hormone replacement therapy?
Breast cancer
Cardiovascular problems
What are 5 types of muscle relaxants?
- Diazepam (Valium)
- Tizanidine (Zanaflex)
- Chloroxaone (Parafon Foree)/ Cyclobenzprine (Flexeril)/ Methocarbamol (Robaxin)/ Orphenadrine (Norflex)
- Baclofen (Lioresal)
- Dantrolene (Dantrium)
At what level does diazepam function? What muscle dysfunction does it treat?
- Treats muscle spasm at supraspinal/ spinal interneuron level
What are 2 adverse/ side effects of diazepam?
- Drowsiness
- Withdrawl
What are 3 drug interactions of diazepam?
- Cimetidine (Tagamet, antiulcer/ anti-stomach acid)
- Viracept and Norvir (antiviral agents)
- AIDs medications that inhibit enzymes that metabolize diazepam
At what level does Tizanidine (Zanaflex) act, and what is its action?
- Spinal cord
- Adrenergic agonist to reduce spaticity
What is the side effect of tizanidine?
- Hypotension
What 5 drugs act on the level of the brain stem/ spinal cord to temporarily relieve local, acute muscle spasm?
- Chlorzoxaone (Parafon Fortee)
- Cyclobenzaprine (Flexeril)
- Methocarbamol (Robaxin)
- Orphenadrine (Norflex)
What drugs is Flexeril similar to?
Sinequam and Elvail
Tricyclic antidepressants
What are Flexeril’s side effects?
- Interact with MAOIs (Nardil, Parnate) to cause HTN crisis
- Tachycardia
- Blurry vision
- Dry mouth
At what level does Baclofen (Lioresal) act, and what is its action?
- Inhibits release of NT at brain and spinal cord, especially substance P to reduce inflammation and pain, and reduce spasticity.
What are the side effects of Baclofen?
Drowsiness
Increased seizures if epileptic
At what level does Dantrolene act, and what is its action?
Acts on muscle fibers to block release of calcium to reduce chronic spasticity
What are 8 side and adverse effects of Dantrolene?
- Dizziness
- Drowsiness
- Diarrhea
- Photosensitivity
- Active toxic hepatitis
- Seizures
- Tachycardia
- Muscle weakness
What Pts should Dantrolene not be used with?
Pts with cardiac and respiratory dysfunction
What drugs react with endogenous opioid receptors?
- Morphine
- Codeine
- Hydrocodone (Vicodin)
- Methadone
- Oxycodone (Percocet, Percodan, Oxycontin)
- Meperidine (Demerol)
- Hydromorphone (Dilaudid)
What are the therapeutic uses of opioid narcotics?
- Analgeisa
- Antitussive
- Antidiarrheal
- Dyspnea related to MI, pulmonary edema, L ventricular failure
What are 8 adverse/ side effects of opioid narcotics?
- Mental status changes-drowsiness
- Nausea/ vomiting
- Postural hypotension from parenteral morphine
- Respiratory depression
- Twitches, seizures, tremor with demerol
- Tolerance to drugs
- Dependence/ addiction
- Physiological withdrawl
What opioid narcotic is indicated for stable, chronic pain?
- Fentanyl (Duragesic, Actiq)
How long does Fentanyl work?
15 - 45 minutes to reduce acute pain
How is Fentanyl applied?
As patch (Durgesic)
Lozenge (Actiq Buccal)
What is the nonopioid narcotic?
Acetaminophen (Tylenol)
What is the action of Acetaminophen?
Weak inhibitor of prostaglandins for mild-moderate pain relief and fever reduction
What are the adverse effects of Acetaminophen?
Severe liver damage in large doses
4 grams/ day maximum
What are 4 classes of anti-hypertensives?
- Diuretics
- Beta-adrenergic blockers
- Calcium channel blockers
- Alpha-adrenergic blockers
What are the 3 types of diuretics?
- Thiazide
- Loop
- Potassium-sparing
What is a specific thiazide diuretic?
Hydrochlorothiazide (HCTZ, HydroDiuril)
What is the action of hydrochlorothiazide?
- Inhibit tubular reabsorption of sodium and chloride in kidney, which inhibits water resorption and increases urine volume for decreased vascular resistance
What populations should avoid Thiazide diuretics?
Elderly or anyone with renal dysfunction
What are 5 side effects of Thiazides?
- Hyperglycemia - esp for diabetes
- Hypokalemia
- Hyperuricemia (too much uric acid – gout)
- Hypercalcemia
- Increased LDL
What are 2 drug interactions of Thiazide diuretics?
- Increased lithium reabsorption
- Digoxin toxicity
What are 3 specific Loop diuretics?
- Furosemide (Lasix)
- Bumex
- Edecrin
What is the action of Loop diuretics?
- Sodium and chloride reabsorption inhibited at loop of henle
What is more effective – Loop Diuretics or Thiazide diuretics?
Loop
May loop diuretics be used with the elderly?
Yes
What are 4 side effects of loop diuretics?
- Hypokalemia
- Hypocalcemia (opposite of thiazides)
- Hyperglycemia
- Hyperurecemia
What are 3 specific potassium-sparing diuretics?
- Aldactone
- Dyrenium
- Midamor
What is the action of a potassium sparing diuretic?
Weak
Prevent hypokalemia
What is the side effect of potassium sparing diuretics?
- Hyperkalemia, especially when combined with ACE inhibitors or potassium supplements
Where are beta-1 and beta-2 receptors located?
Beta-1 in heart
Beta-2 in lungs and arterioles
What are 3 non-selective beta blockers?
- Propanolol (Inderal)
- Nadolol (Corgard)
- Penbutolol (Levatol)
What are 2 selective beta-blockers for beta-1 receptors?
- Lopressor
- Atenolol
What is the mechanism of action of beta-blockers?
- Block renin release from kidneys
- Decrease CO by slowing HR
What conditions should not be managed with beta-blockers?
- Certain types of angina
- All forms of COPD
- Diabetes mellitus
Why should beta-blockers never be stopped suddenly?
Anginal attack
What are 3 side effects of beta-blockers
- Sleep disturbances
- Mental status changes including depression and disorientation
- Cold extremities since alpha-adrenergic vasoconstriction is unopposed
What are 4 calcium channel blockers?
- Procardia XL
- Norvasc
- Cardizem
- Verapamil
What are 2 side effects of calcium channel blockers?
- Significant bradycardia
- Peripheral vasodilation causing headache, ankle swelling, reflex tachycardia
What are 2 drug interactions of calcium channel blockers?
- Digoxin toxicity
- Verapamil can cause cardiac depression or AV block
What is the alpha-1 selective blocker?
- Prazosin (Minipress)
What is the action of Prazosin?
Blocks peripheral vasodilation
What are 3 side effects of Prazosin?
- Syncope
- Headache
- Palpitations
What are 2 alpha-2 agonists?
- Clonidine (Catapres)
- Methyldopa (Aldomet)
What is the action of the alpha-2 agonists?
Stimulate alpha-2 receptors in brainstem
- Decrease NS signals to decrease HR, peripheral resistance, BP
What are 5 side/ adverse effects of Clonidine or Methyldopa?
- Dry mouth
- Sedation
- Depression
- Risk of rebound hypertension with Clonidine
- Decreased mental acuity and hemolytic anemia with Methyldopa
What is the anginal medicine of choice?
Nitrates
What is the action of nitrates?
- Peripheral vasodilation
- Reduced work of heart
- Decreased O2 demand
- Vasodilation of collateral vessels to heart
- Relieve coronary artery spasm
How may nitro be used prophylactically?
Prior to exercise
What are side effects of nitro?
- Dizziness
- Flushing and headache
- Reflex tachycardia
When must EMS be called if nitro is ineffective?
After 3 tabs with no effect.
Sit the patient, call EMS
What are nitropatches and ointments used for?
Chronic angina
What type of nitro is useful for Pts with RA of the hands, unable to handle pills?
Nitrospray
What class of medicine is useful for the stress related to aging?
Non-tricyclic antidepressants
What are 4 types of ACE inhibitors?
- Quinipril (Accupril)
- Captopril (Capoten)
- Fosinopril (Monopril)
- Benazepril (Lotensin)
What is the action of ACE inhibitors?
Inhibits conversion of angiotensin I to II – inhibits vasocontrition
Inhibits secretion of aldosterone from adrenal cortex – decreased sodium and water retention
Inactivation of bradykinin – Decrease vasodilation
What are the overall effects of the actions of ACE inhibitors?
- Ateriolar vasodilation
- Decreased peripheral resistance
- Increased flow
What are ACE inhibitors typically used to treat?
Heart failure
What are 5 side/ adverse effects of ACE inhibitors?
- Nonproductive dry cough
- Decreased taste perception
- Excessive hypotension
- Hyperkalemia
- Angioedema
What are 3 drug interactions of ACE inhibitors?
- Diuretics (hypotension)
- Potassium-sparing diuretics (hyperkalemia)
- Lithium toxicity
What is step 1 medical management of CHF?
ACE inhibitors
What is step 2 medical management of CHF?
Diuretics
Especially loop diuretics (Lasix)
What is step 3 medical management of CHF?
Nonselective beta-blocker and selective Alpha-1-adrenergic blocker (carvedilol-coreg)
Administered carefully to prevent worsening CHF
What is step 4 medical management of CHF?
Digoxin (Lanoxin)
What is the action of digoxin?
Increases force of contraction of cardiac muscle without increasing O2 demand
Increased EF
When is digoxin utilized during treatment of CHF?
Systolic dysfunction
Arhhythmias present
What is the major adverse effect of digoxin?
Digoxin toxicity, which is fatal
What are 5 signs of digoxin toxicity?
- Cardiac arrhythmia
- Anorexia
- Nausea
- Vomiting
- Mental status changes (hallucinations, blurred vision)
Where can you check for arrhythmias related to digoxin toxicity?
Palpate apical pulse
What aspect of pt ed needs to be addressed in Pt taking digoxin?
Adherence to dosage
Missed appointments a red flag
What drug may be used in combination with ACE inhibitors to increase survival, or beta-blockers to reduce hypertension?
Hydralazine (Apresoline) and mixoxidil
Vasodilators
What are 6 side/ adverse effects of vasodilators?
- GI disturbances
- Headache
- Flushing
- Nasal congestion
- Lupus-like symptoms (myalgias, arthralgias, skin rash)
- Reflex tachycardia (anginal attack)
What are 3 common anti-coagulants?
- Warfarin (coumadin)
- Heparin
- Fondaparinux (Atrixtra)
Which anti-coagulant is endogenous?
Heparin
What is the action of warfarin?
Antagonist of vitamin K, which functions in the clotting cascade
What is warfarin used to treat?
- Emboli
- MI
- Venous thrombosis
How long is required for maximum antithrombotic effects of warfarin?
3 - 6 days
What are 3 adverse effects of warfarin?
- Massive or minor hemorrhage
- Purple toe hemorrhage from microemboli
- Birth defects/ spontaneous abortion
How is warfarin related hemorrhage treated?
Vitamin K (may take 24h to work
What drugs decrease the anticoagulant effect of warfarin?
- Phenytoin
- Barbiturates
- Carbamazepine
- Alcohol intake
What drugs increase the anticoagulant effect of warfarin?
- Cimetidine
- Ciprofloxacin
- Antibiotics
- Aspirin
- Hepatic dysfunction
- Malnutrition
- CHF
What is the medication form of heparin?
Heparin sodium
What are the 3 low molecular weight types of heparin?
- Fragmin
- Lovenox
- Innohep
What are the benefits of low molecular weight types of heparin?
High bioavailability
Greater inhibition of factor Xa and clotting cascade
Less frequent dosing – No need to monitor prothrombin times
What anticoagulant is contraindicated with renal dysfunction?
Fondaparinux (Atrixtra)
What is the action of fondaparinux (atrixtra)?
- Inhibition of factor Xa by binding to antithrombin III, and disrupting clotting cascade
After what procedure is fondaparinux administered? When?
After THA (at least 6-8 hours post or earlier)
What are the 3 medications used for antiplatelet therapy?
Aspirin
Clopidogrel (Plavix)
Ticlopidine (Ticlid)
What is the action of aspirin, clopidogrel (plavix), and Ticlopidine (Ticlid) in platelet therapy?
Irreversibly inhibits platelet aggregation at injury/ damaged sites of vessels
What conditions is aspirin used to treat for antiplatelet therapy?
Angina
CAD
MI
When is aspirin not used since it prolongs clotting?
Acute athletic injury
What condition is clopidogrel (plavix) used in?
PVD
What is condition is ticlopidine (ticlid) used in?
Prevent TIAs and stroke
What are the side/ adverse effects of ticlopidine (ticlid)?
GI symptoms
Dizziness
Neutropenia - agranulocytosis
What are the drug interactions of ticlopidine?
Inhibits enzymes that breakdown dilantin and theophylline (a bronchodilator)?