Pharm Exam 1: Final Flashcards
Detrol
- overactive bladder
Cholinergic effects mimic which nervous system
parasympathetic (rest & digest)
The nurse is reviewing a patient’s list of medications with the patient. The nurse understands that the older adul’s slower absorption of oral meds is primarily because of…
increased pH of gastric secretions
Decreased albumin level is expected in
- Elderly
- Newborns
- Liver Disease
- Manourished.
Acebutolol HCl (Sectral), a beta blocker, has negative chronotropic effects, what are they?
could cause symptomatic bradycardia and/or heart block
Which physiologic change that normally occurs in the older adult has implications for the nurse assessing drug response?
Drug half life is lengthened (shorter half life is better)
Drug movement from the blood to the interstitial space of tissues and from there into the cells.
Distribution
Which drug can be taken orally, noncat or cat?
Noncatecholamine
An example of this category drug would be accutane.
Category X
Psychological benefit of a drug despite no chemical drug effect
Placebo Effect
How is cardiac output measured?
- heart rate,
- blood pressure
- urine output
has an antagonistic effect with warfarin and will inhibit its effects.
Vitamin K
pre-op med to decrease salivary secretions and maintain heart rate. Will Increase the heart reate.
Atropine
The nurse assesses a patient receiving an adrenergic (sympathomimetic) agent. Which finding will be of greatest concern to the nurse?
Weak peripheral pulses and decreased heart rate
Adverse reactions of Atropine
- asal congestion
- tachycardia
- hypotension
- pupillary dilation
- abdominal distention
- palpitations.
Scopolamine
decreased Gi Motility, Motion sickness
Cholinergic/Parasympathetic Actions
- Salivation
- Broncho Constriction
- GI peristalsis
- Pupil Constriction
- Vasodilation
Cholinergic Neurotransmitter
Acetycholine
Schedule III Drug
moderate or low physical dependence.
Drug that creates a response
Agonist
If a drug becomes ionized what will happen?
it will not pass a lipid soluble
Atropine Toxicity
MAd as a hatter (confusion), dry as the street, hot as the summer, red as a beet.
If a patient has diabetes, what would the best beta blocker be for that patient?
Lopressor, Tenormin
The nurse takes all precautions in order to ensure that the pediatric patient will receive a drug dosage that is accurate based on body surface area. To which step of the nursing process does this action most closely correspond?
planning
The nurse is caring for a patient who is prescribed propranolol (Inderal). Which assessment finding will reveal if the medication is having a therapeutic effect?
The patient’s blood pressure is 130/75 mm Hg
Which symptom presenting in an older adult would cause the nurse to suspect drug toxicity?
Confusion
Hypertension Treatment ABCD
- Ace inhibitor
- Beta Blockers
- Calcium channel Blockers
- Diuretics
Movement of the drug and their metabolites out of the body.
Excretion
What are the reasons for the lack of research done for Pediatric Pharmacology?
- difficult to get large enough study sample
- Diseases occur in small numbers
Pharmacokinetics Includes These 4 Things
- Distribution
- Excretion
- Metabolism
- Absorption
BBB
- Blood Brain Barrier
- semipermeable in the CNS
- protects brain from foreign substances
- highly lipid drugs cross
- water soluble drugs do not make it across
The nurse is administering medication to an older adult. The nurse anticipates that this patient’s renal system will have which effect on the medication?
the medication will be excreted slower
If an acid is exposed to an alkaline environment what happens
it becomes ionized
A decrease in the responsiveness of the drug over the course of therapy.
Tolerance
An estimate of the margin of safety of a drug.
Therapeutic Range
A nurse is monitoring a patient receiving atropine. Which finding requires nursing action?
Blood pressure of 90/40 mm Hg
Absorption of Medications:
- Lipid soluble medications absorb easily through the GI membrane because the GI membrane is composed mostly of lipids.
- Nonionized substances pass easily through the GI membrane.
- Water soluble medications require a carrier to pass through the GI membrane (active absorption).
A 2 year old patient is to receive a topical medication. The nurse considers which factro when administering this medication?
thinner skin in children allows for rapid absorption.
an antispasmodic cholinergic blocker used to decrease GI motility in patients with functional GI disorders such as irritable bowel syndrome.
Dicyclomine (Bentyl)
Atrovent
used for asthma COPD, and rhinitis
A disease characterized by spasm of the arteries in the extremities, especially the fingers. It is typically brought on by constant cold or vibration, and leads to pallor, pain, numbness, and in severe cases, gangrene.
Raynaud’s Disease
Hypertension Nursing Care
- Daily Weight
- Intake & Output
- Urine Output
- Response of BP
- Electrolytes
- TAke pulses
- Ischemic Episodes
- Compications (4C’s)
“protein binding” refers to…?
- “free” drug (drug not bound to protein) that will be able to create a pharmacologic response
- When two drugs are given together that are both “highly protein-bound” drugs, the pateint is at greater risk of drug accumulation (drug toxicity).
- Ibuprofen is a 98% protein bound drug. This means that 98% of the drug is bound to protein (albumin), and only 2% of the drug is “free”.
What organ metabolizes the lipid soluble drug to trasnform it to a water soluble drug for renal excretion
Liver
Alpha 1 Agonist Used for…
- Bradycardia
- Low BP
- GI
Which is a priority nursing diagnosis for a patient receiving an anticholinergic (parasympatholytic) medication?
Impaired gas exchange related to thickened respiratory secretions
If a patient has renal disease what happens to drug excretion
slowed or impaired. Drug accumulation
Hypertension Treatment
ABCD
- Ace inhibitors/ARBs
- Beta Blockers
- Calcium channel blockers
- Diuretics
Knowing that the albumin in neonates and infants has a lower binding capacity for medications, the nurse anticipates that the health care provider will order which adjustment to minimize the risk of toxicity?
A decrease in the dosage of drug given
During this phase a drug in solid form must be disintegrated to dissolve and be absorbed
pharmacoceutic
Cholinergic Agonist Effects
Sludge BAM
- Salivation/Sweating/Secretions
- Lacrimation
- Urination
- Defecation
- GI Upset
- Emesis
- Bradycardia
- Ab Cramps
- Miosis
A patient with poor renal function (low glomerular filtration) will have what type of creatinine?
- elevated blood creatinine levels
- low urine creatinine levels.
- drug dosages typically need to be decreased.
Adverse drug reaction from excessive dosing of the drug
Toxic Effect
Adrenergic Neurotransmitter
norepinephrine, epinephrine
Abrupt withdrawal of a beta blocker can cause
rebound hypertension
The term used for a drug that is approved for one thing but used for something completely different?
Off Label
Predictable secondary effect of the drug. Can be desirable or undesirable
Side effect
beta blockers are used to treat:
- Angina pectoris
- Congestive heart failure (CHF)
- Hypertension
The process in which a drug passes first through the liver after absorption.
First Pass Effect
Schedule I Drug
high abuse, no current medical use
why would a protein supplement be prescribed for an older adult?
increases circulation of free drug
A patient taking an alpha 1 blocker. What side effect should the patient be cautioned about
reflexive bradycardia
Which crosses the blood brain barrier, noncatecholamine or Catecholamine?
NonCatecholamine
Drugs that blocks a response
Antagonist
What type of food decreases the absorption rate of enteric coated medications?
high fat
This is the percentage of the administered drug dosage that reaches the blood stream (systemic circulation).
bioavailability
The older adult patient has questions about oral drug metabolism. What is the most important information to include in this patients teaching plan?
first pass effect
If excretion is impaired what risks are there for medication?
toxicity
Category B Risk for the pregnant woman
May have some risk on animals but none to humans
A patient is admitted to the emergency department with an expected cholinesterase inhibitor overdose. What is the nurse’s primary action?
Administer ordered anticholinergic medication
Mneumonic
You have 1 heart and 2 lungs
- Beta 1: Heart
- Beta 2: Lungs
The nurse uses an appropriate drug reference to obtain drug parameters prior to administration of a medication. To which step of the nursing process does this action most closely correspond?
Nursing Intervention
Propranolol (Inderal) is nonselective—it blocks
both beta1 and beta2 receptors at therapeutic dose
Movement of a drug from the site of administration to body fluids
Absorption
This organ cannot excrete lipid soluble drugs
Kidneys
This is an anticholinergic agent that blocks the effects of the parasympathetic nervous system, producing sympathetic nervous system effects
Atropine
This can directly penetrate membranes. The drug will dissolve into the membrane and cross to the other side.
Lipid Soluble
the study of what the body does to the drug
Pharmacokinetics
The protein bound drug gets released into the blood stream
free drug
“lol” =
beta blockers
This is the drug that creates the action desired
Free Drug
Adrenergic agents stimulate the
- sympathetic nervous system
atenolol selectively blocks which beta blocker?
- only the beta1 receptors in the heart,
- not the beta2 receptors located in the lungs
What organ is responsible for the majority of drug excretion
kidneys
A neonate with lower than normal albumin levels. The nurse is ordered to administer medication that is highly protein bound. The nurse know that what must occur in response to these factors?
Dose should be decreased because of increased unbound active medication
a test to determine renal function by comparing the level of creatinine in the blood with the level of creatinine in the urine
Creatinine Clearance
This can be used as an antidote to the toxicity caused by cholinesterase inhibitors and organophosphate ingestion
anticholinergic
Secondary effect of the drug. Always undesirable.
Adverse Effect
Bentyl
used for irritable bowel syndrome
he nurse realizes that a drug administered by which route will require the most immediate evaluation of therapeutic effect?
intravenous
What effect may the older adult’s cardiac system have on drug administration in this patient?
Delayed transportation of drugs to the body tissues
The nurse recognizes that the administration of a drug influences cell physiology. What is the term for this concept?
Pharmacodynamics
This category drug may be used for a pregnant woman experiencing life threatening conditions. When benefit for risk must be determined
Category D Drug
Risk for pregnant woman with a category A Medication
No risk to the Fetus
A 3-year-old child has been started on a new medication. What is the most important information to convey to the parents?
“Observe the child for potential adverse effects of the medication.”
The nurse is caring for a patient who is taking a cholinergic (parasympathomimetic) drug. Which assessment will indicate that the medication is having a desired effect?
Increased gastrointestinal (GI) motility
Antimuscarinic/Anticholinergic Side Effects
The ABCD’S of Anticholinergic Side Effects
- Anorexia
- Blurry Vision
- Constipation/Confusion
- Dry Mouth
- Stasis of Urine
The nurse understands the differences between drug excretion in children and that in adults. With this knowledge, what does the nurse consider when administering medications to children?
evaulate for drug accumulation, because the excretion of drugs in children is slower
This type of drug solubility cannot dissolve into the lipid membrane of the cells. They need a carrier.
Water Soluble
Schedule II Drug
potential for abuse both physiological and psychological. Ritalin
Effects for a beta blocker used for a COPD patient or Diabetic
- Broncho Dilator
- Effects Blood Sugar
- Increase Heart rate
Occurs when the drug reaches its highest blood or plasma concentration
peaked
Adrenergic/Sympathetic Actions
- Incease HR
- Increase BP
- Pupil Dilation
- Broncho dilation
Drugs for Bradycardia and Low Blood Pressure (IDEA)
- Isoprotonel
- Dopamine
- Epinephrine
- Atropine Sulfate
This is not a singular entity but rather a group responsible for drug metabolism
Cytochrome P450
Which factors will influence the absorption of oral medications?
- presence of food in the stomach
- pH of the stomach
- form of drug preparation
- pain
For a schedule V drug is the potential for abuse small or large?
small
What are influencing factors for pharmacokinetics in children related to absorption?
- weight
- age
- health status
- disease
- hydration
What are influencing factors for pharmocokinetics in children related to route of admin?
- pH more ALKALINE
- gastric emptying
- breast feeding?
- GI surface areas INCREASED
Absorption problems IM/SubQ with Children
- peripheral perfusion
- decreased muscle, subq fat
- circulation effects
What is a child < 2years first pass effect?
decreased hepatic enzymes
Factors influencing pharmacodynamics in older adults
- altered therapeutic range
- increase sensitivity
- change in organ function
- compensatory response to phys changes
Absorbtion factors in older adults
- decreased GI blood flow & motility
- increased Alkaline secretions
Distribution facors for older adults
- decreased albumin levels
- decreased mobility (IM)
*
Adrenergic Receptors
- Alpha 1
- Alpha 2
- Beta 1
- Beta 2
Alpha 2 Characteristics
- Reduced Norepi (dec BP)
- decrease GI Tone and motility
- smooth muscle
postaganglionic, decrease vasoconstriction
Alpha 2
- Blood Vessel
- Eye
- Bladder
- Prostate
blood vessels, causes vasoconstriction
Anatomy involved in Beta 1 Receptor
- Heart
- Kidney
Anatomy Involved in Beta 2 Receptor
- Smooth Muscle
- Lungs
- Uterus
- Liver
Beta 1 causes
the release of renin into the blood
Beta 2 & muscles
- relaxes uterine smooth muscles
- dilates arterioles in heart, lungs, skeletal muscles
Nonselective Beta Blockers characteristics
- use beta 1 and beta 2
- not good for diabetics