Shared Flashcard Set

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Final Exam
review
47
Pharmacology
Undergraduate 2
04/27/2011

Additional Pharmacology Flashcards

 


 

Cards

Term
Cell Cycle
Definition
cell is more susceptible to chemo when it is active (in the G0 phase)cells are more proliferative
Term
Growth Fraction
Definition
what cells are proliferating / what cells are not proliferating
easier to kill when proliferating
Term
Tissue growth & Chemotherapy
Definition
chemotherapy drugs are more toxic to tissue with high growth fraction aka: bone marrow, skin, hair follicles, sperm, GI tract etc
Term
Responsiveness to Chemotherapy
Definition
Growth Fraction
-solid tumors have low GF - poor chemo response
-Disseminated tumors - high GF - respond well to chemo
Term
Obstacles to Chemo
Definition
Toxicity to normal cells - lack selectivity
-uncertainty of 100% kill
-absence of early detection
-solid tumor resistance
-drug resistance
Term
Chemo therapy strategies
Definition
intermittent chemo - allows normal cells to repopulate
Combination- suppression of drug resistance, increased cancer cell kill, reduced injury to normal cells
Term
Major Toxicities of Chemo
Definition
Bone marrow suppression, digestive tract injury, nausea and vomit, alopecia (hair loss), reproductive toxicity, extravasation (iv disruption), Carcinogenesis (cancer causing)
Term
Neutropenia (bone marrow suppression)
Definition
infection increased cause of low white blood count
Term
Thrombocytopenia
Definition
increased risk for bleeding (no needles) need to watch neutrophil count!!!
- Nator = when neutrophil count bottoms out, and need to put them in isolation!
Term
Digestive tract injury
Definition
Stomatitis - inflammation of oral mucosa,
Diarrhea - not getting nutrients, impaired re absorption
Term
Nausea and Vomit
Definition
Direct stimulation of Chemo receptor trigger zone, major toxicity of resolt of these drugs, pretreat with anti emetic
--- decrase antiopatory nausea
--- prevent dehydration and malnutrition
--- promote compliance
Term
Alopecia 
Definition
Hair loss due to injury to hair follicles

damaging to self concept of Pt - large treatment related fear
Term
Reproductive toxicities
Definition
  • Miscarriage 
  • Fetal anomalies - prevention of prego during tx
  • Sperm - irreversible sterility in MALES - sperm banking perhaps. 
Term
Hyperuricemia
Definition

Excessive uric acid levels in the blood

  • formed by the breakdown of DNA following cell death
  • can cause damage to kidneys
  • to treat: increase fluid intake and Allopurinol (decreases the production of uric acid) 

 

Term
Extravastion
Definition

Anticancer drugs can cause severe local injury if they leak into tissues surrounding the IV site
  • Necrosis of tissue: surgical debridement, skin grafting
Prevention: put in a cental line

Term
Cytotoxic Agens
Definition

mech. of action: disrupt processses related to synthesis of DNA

  • cells that are undergoing replication (can't kill dormant cells)
  • high growth fraction tissues

Term

Cyclosphamide (Cytoxan)

Definition

Administration: prodrug that is converted to active form in the liver, delayed onset of action, may be given PO, take with food

 

Adverse effects: ***Bone marrow supression***, Nausea&vomiting, alopecia, hemorrhagic cystitis (drug can settle in the bladder and cause hemorrhaging) - hydrate to prevent

Term

Platinum Compounds:

 

Cisplatin (Platinol-AQ)

Definition

mech. of action: similar to alkylating agents, produce DNA cross links, cell-cycle phase non-specific

 

Uses: Ovarian and testicular cancer, advanced bladder cancer,

 

Adv. effects: **Dose limiting toxicity to kidneys** (treat w/ extensive hydration and diuretics), highly emetogenic - 1 hr after, lasting 1-2 days

Term

Breast cancer treatment 

Definition

Treatment: 

  • Principal treatment is surgury and radiation
  • adjuvant treatment is cemo therapy and Cytotoxic agents** and hormonal therapy!

Term

Hormonal Agents

Tamoxifen (Nolvadex)

Definition

Blocks receptors for estrogen 

  • Gold standerd - only works against cancer cells that are estrogen receptor positive
  • Good drug but very very bad side effects

Actions:

Blocks receptor on some tissue and activates them on others

Uses: Blocks estorgen receptors on cancer cells, prevents activation by estradiol 

 

Benifits:

Increased bone density,

Decreased LCL's 

Adverse effects;

hot flashesm, fluid retention, nausea, vomit, risk of endometrial cancer****

Term

Aromatase Inhibitor

 

Arimidex (Anastrozole)

Definition

Arimidex

  • Used to treat Estrogen Related- postive breast canver in postmenopausal women
  • can only be used in post menopausal women
  •   and more effective than tamoifen

Term
Adverse effects of Armidex
Definition

Asthemia - (weakness/fatigue)

Nausea

Headacha

Hot flushes 

 

25S% of women experience join pain***

Term

Normal BP

Pre hypertension

Stage 1 hypertension

Stage 2 hypertesion

Definition

120/80

120-139/80-89

140-159/90-99

160+/100+

Term
Primary Hypertension
Definition

hypertension with no identifiable cause

Can be successfully treated (not cured)

Term
Secondary Hypertension
Definition

An elevation of BP brought on by identifiable primary cause

  • cure is possible if primary cause is treated
  • can be managed with meds

Term

Lifestyle Modifications:

Definition

  • weight loss
  • sodium restrictin
  • DASH diet
  • alcohol restriction
  • aerobic exercises
  • smoking cessation
  • maintenance of postassium and calcium intake

Term

Systems to regulate BP

Definition

  • sympathetic NS
  • renin-angiotensin-aldosterone system (RAAS)
  • the kidney

Term

Thiazide Diuretics

Definition

Ex. Hydrochlorothiazide (HCTZ)

Uses: reduce blood volume (initial antihypertensive effects), reduce arterial resistance (reduced vascular resistance develops over time and is responsible for long-term antihypertensive effects)

 

Adv. effects : hyperkalemia, dehydration, hyperglycemia, hyperuricemia (high uric acid in blood)

Term

High-ceiling loop diuretics

Lasix

Definition

Reduces BP by reducing blood volume and promoting vasodilation

 

use w/ pts who need greater diuresis than thiazides provide (low GFR)

 

Adv. effects: Hypokalemia, dehydration, hyperglycemia, hyperuricemia, may cause hearing loss (ototoxicity)

Term

Potassium-sparing diuretics

 

Spironolactone (Aldatone)

Definition

Adv. effects: Hyperkalemia

 

Contraindications: **don't use w/ ACE inhibitors**, angiotensin II receptor blockers, or aldosterone antagonists, all of which promote hyperkalemia

Term

Beta Blockers

 

Propranolol (Inderal), Metoprolol (Lopressor)

Definition

Action: decreases HR and contractility --> decreased CO

decreases renin release from kidneys (RAAS system)

 

Adv. effects: Bradycardia, decreased AV conduction, reduced contractility

*don't use in pts w/ 2nd or 3rd degree heart block

*special care w/ heart failure

*avoid use in asthmatics

Term

Alpha Blockers

 

Doxazosin (Cardura), Terazosin (Hytrin)

Definition

Action: Prevents vasoconstriction by preventing stimulation of alpha 1 receptors on arterioles and veins - reduces peripheral resistance and venous return = both decrease CO, eventually... :)

 

Adv. effects: Orthostatic hypotension (esp. w/ initial dose)

 

*NOT FIRST LINE THERAPY

 

**Use for pts w/ BPH and hypertension**

Term

ACE Inhibitors

 

Captopril (Capoten), Enalapril (Vasotec), Lisinopril (Prinivil)

Definition

Action: prevents formation of angiotensin II

*Slows kidney injury in DM pts w/ renal damage

 

Adv. effects: persistent cough**, 1st dose hypotension, angioedemia, hyperkalemia (avoid K+ supplements and K+ sparing diuretics)

Term
Order of Drugs for hypertension
Definition

  1. Lasix - thiazide
  2. Beta Blockers
  3. ACE inhibitors
  4. Calcium channel blockers = last choice!

Term
Patients in Special Populations
Definition

African Americans: drug Bidil (vasodilator, works w/ genetic make up)

  1. lifestyle modification
  2. Sodium restriction
  3. Diuretics
  4. Bidil
Pregnant women : not ACE inhibitors or ARBS (Angiotensin II Receptor Blockers)

Term

Preeclampsia

 

 

 

Eclampsia

Definition

Preeclampsia

  • drug of choice : Hydralazine
  • birth as treatment
Eclampsia (preeclampsia w/seizures)
  • drug of choice: magnesium sulfate

Term
Statins
Definition
  • Most effective drugs for lowering LDLS
  • Evevates HDL
  • Should be taken during the evening because the liver produces cholesterol at night
Mechanism of action = removes LDL's from blood by Hepatocytes, 

Adverse affects 
  • Myopathy(muscle weakness)/Rhabdomyolsis(muscle death)
  • Hepatotoxicty 
  • No Prego
Term
Niacin - Nicontinic Acid - AKA vitamin B3!!
Definition

  • Must effective at increasing HDL
  • Reduces LDL and TG

Adverse effects

  • flushing
  • Gi upset
  • Itching 
  • Hepatotoxicty
  • Headache
*****Premedicate with 325mg of aspirin

Term

Questran (Cholestryamine)

Bile acid Sequestrants


Definition

Administration - take a couple hours after other meds to ensure absorption of other meds

 

Adverse efffects-

  • constipation
  • flatulence 
  • Binds fat soluble vitamins (deficiency of fat soluble vitamins)

Term
Angina Pectoris
Definition

Angina Pain occurs when cardiac oxygen supply is

insufficeint to meet oxygen demands

 

 

Term
Nitroglycerin
Definition

Administration

  • keep away from heat, moisture and keep in orginal bottom away from the light
  • take one tablet sublingually with onset of chest pain, if pain persist after five min call 911 take another tab, if pain still persists take only one more tab (up to three tabs in fifteen minutes only)

Adverse effects

  • Headache (b/c of max blood flow
  • Orthostatic Hypotension
  • Sncope (fainting) - can happen without standing up 
  • Relfex tachycardia

Term

Anti Coagulation

Aspirin

Definition

Inhibits platelet aggregation 

 

Adverse effects, 

 

  • you know them!!!!!! if you don't you should fail pharm

Term
Ticlid
Definition

mechanism of action: causes irreversible blockade of ADP receptors on platelets, preventing ADP stimulated aggregation

 

 

Uses: Pts that do NOT tolerate aspirin

Term

Anticoagulant 

Heparin

Definition

Administration: parenteral, b/c unable to cross membranes

 

Monitoring: aPTT (activated partial thromboplastin time)

-if very high there won't be any clotting - greater risk of bleeding out

 

Indications: Venous thrombosis, Pulmonary embolism, mural thrombosis after MI, post thrombolytic coronary rethrombosis, unstable angina, acute MI

 

Contraindications:

 

Antidote: Protamine sulfate

 

Adverse Effects: Hemorrhage, thrombocytopenia, osteoporosis, alopecia, hypoaldosteronism

Term

Anticoagulants

Coumadin

Definition

Administration: PO

 

Monitoring: PT/INR - PT=prothrombin time, INR=international normalized ration

 

Indications: Long term prophylaxis of thrombisis - DVT, PE, prevent thromboembolism in pts w/ prosthetic heart valves, prevent thrombsis in a-fib

 

Contraindications: don't use in emergencies!, don't combine w/ any other drug that binds to albumin b/c it will be knocked off

 

Adverse effects: Hemorrhage (reverse w/ vit. K)

  • educated pt. about blood in stool, bloody nose, bruising, and safe hygiene (razor, toothbrush)
  • any food w/ vitamin K

Term

Anticoagulants

Low Molecular Weight Heparin

(LMW heparin)

Definition

Administration: sub Q, 1-2x/day b/c long half-life

 

Monitoring: none needed b/c more biologically active at lower dosages and more therapeutically predictable than regular heparin

Term

Thrombolytics (Clot busters)

 

Streptokinase (Streptase), Alteplase (tPA), Reteplase, Urokinase, Tenecteplase (TNKase)

Definition

Administration: most effective if started w/in 4-6 hrs of MI/stroke

 

Adverse effects: *Bleeding, antibody production, fever, hypotension

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