WITH SOLUTIONS GRADED A+
▶ Pharmacotherapy and the pregnant patient? Answer:o Physiological
changes during pregnancy can alter normal pharmacokinetic responses.
o During pregnancy increased levels of progesterone cause a delay in
gastric emptying and GI motility. This causes the drugs to remain in the GI
tract longer leading to higher drug absorption of oral drugs.
o Distribution of drugs during pregnancy is affected by changes in total
body water, which may increase by over 50%. This creates greater dilution
of plasma proteins causing more free drugs in the plasma due to lack of
binding sites. This then results in more drug molecules being available for
transfer across the placenta or to be secreted in breast milk.
o Metabolism is least affected by pregnancy.
o Excretion can cause doses of medications to be adjusted due to
enhanced renal plasma flow which can increase 50% to 70% during the
first two trimesters.
▶ Risk Category A? Answer:Adequate, well-controlled studies in pregnant
women have not shown an increased risk of fetal abnormalities to the fetus
in any trimester of pregnancy.Prenatal multivitamins, insulin, thyroxine, folic
acid
▶ Risk Category B? Answer:Animal studies have revealed no evidence of
harm to the fetus; however, there are no adequate and well-controlled
studies in pregnant women. OR Animal studies have shown an adverse
effect, but adequate and well-controlled studies in pregnant women have
failed to demonstrate risk to the fetus in any trimester. Penicillins,
cephalosporins, azithromycin, acetaminophen, ibuprofen in the first and
second trimesters.
▶ Risk Category C? Answer:Animal studies have shown an adverse effect
and there are no adequate and well-controlled studies in pregnant women.
OR No animal studies have been conducted and there are no adequate
Most prescription medicines; antimicrobials such as clarithromycin,
fluoroquinolones, and Bactrim; selective serotonin reuptake inhibitors
(SSRIs); corticosteroids; and most antihypertensives
,▶ Risk Category D? Answer:Adequate well-controlled or observational
studies in pregnant women have demonstrated a risk to the fetus.
However, the benefits of therapy may outweigh the potential risk. For
example, the drug my be acceptable if needed in a life-threatening situation
or serious disease for which safer drugs cannont be used or are
ineffective.ACE inhibitors, alcohol, alprazolam, angiotensin rececptor
blockers in the second and third trimesters, carbamazepine,
cyclophosphamide, gentamicin, lithium carbonate, methimazole, mitomycin,
nicotine, NSAIDS
▶ Risk Category X? Answer:Adequate well-controlled or observational
studies in animals or pregnant women have demonstrated positive
evidence of fetal abnormalities or risks. The use of the product is
contraindicated in women who are or may become pregnant. There is no
indication for use in pregnancy. Clomiphene, fluorouracil, isotretinoin,
leuprolide, menotropins, methotrexate, misoprostol, nafarelin, oral
contaceptivves, raloxiphene, ribavirim, statins, temazepam, testosterone,
thalidomide, and warfarin.
▶ Pharmacotherapy and the older adult? Answer:o Normal aging
processes can alter pharmacokinetic and pharmacodynamics responses to
drugs.
o Overall, absorption of nutrients and drugs tend to slow with aging.
o Age related increases in fat storage cause lipid soluble drugs to be stored
in the body for extended periods, leading to lower plasma levels and
increased drug concentrations in the tissues.
o Age related changes in the liver include reduced hepatic function,
decreased liver mass, diminished blood flow, and alteration in the activity of
hepatic enzymes.
o Frequency of administration should be decreased to avoid toxicity due to
drug accumulation.
o Pharmacodynamic changes are usually associated with drug receptors.
Evidence suggests that older adults have a decreased number of
receptors.
▶Drug? Answer:Any substance that is taken to cure, or reduce symptoms
of a medical condition.
, ▶ Pharmacology? Answer:The study of medicine.
▶ Pharmacotherapy/Pharmacotherapeutics? Answer:Application of drugs
for the purpose of disease prevention and treatment of suffering.
▶ Indications and Contraindications? Answer:The conditions for which a
drug is approved are its indications. Every drug has at least one indication.
Some drugs are used for conditions for which they have not been
approved; these are called unlabeled or off- label indications.
▶ Therapeutic classification? Answer:-Based on their usefulness in treating
a specific disease
-The key to therapeutic classification is to simply state what condition is
being treated by the particular drug.
-The prefix anti- refers to therapeutic classification.
▶ Pharmacologic Classification? Answer:-Addresses a drugs mechanism
of action or how a drug produces its effect in the body.
-More specific than therapeutic
-Requires biochemistry and pathophysiology
▶ Chemical name? Answer:-Assigned using standard nomenclature.
-A drug has only one chemical name
-Helpful in predicting a drugs physical and chemical properties.
▶ Generic name? Answer:Name assigned by the United States Adopted
Name Council.
Less complicated and easy to remember.
▶ Trade Name? Answer:Sometimes called the proprietary product, or
brand name is assigned by the pharmaceutical company maketing the
drug.
▶ Exclusivity? Answer:Typical length of exclusivity for a new drug is 5
years.
▶ Combination drug? Answer:Drugs with more than one active generic
ingredient.