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Test Bank for Lippincott Illustrated Reviews: Pharmacology 7th Edition by Karen Whalen ALL CHAPTERS 1-48 WITH RATIONALES|A+GRADED

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Test Bank for Lippincott Illustrated Reviews: Pharmacology 7th Edition by Karen Whalen ALL CHAPTERS 1-48 WITH RATIONALES|A+GRADED Chapter 2: Drug–Receptor Interactions and Pharmacodynamics 1.Drugs do not metabolize the same way in all people. For what patient would a nurse expect to assess for an alteration in drug metabolism? A) A 35-year-old woman with cervical cancer B) A 41-year-old man with kidney stones C) A 50-year-old man with cirrhosis of the liver D) A 62-year-old woman in acute renal failure Ans: C Feedback: The liver is the most important site of drug metabolism. If the liver is not functioning effectively, as in patients with cirrhosis, drugs will not metabolize normally so that toxic levels could develop unless dosage is reduced. A patient with cervical cancer or kidney stones would not be expected to have altered ability to metabolize drugs so long as no liver damage existed. The patient with renal failure would have altered excretion of the drugs through the renal system but metabolism would not be impacted. 2. A patient presents to the emergency department with a drug level of 50 units/mL. The half-life of this drug is 1 hour. With this drug, concentrations above 25 units/mL are considered toxic and no more drug is given. How long will it take for the blood level to reach the non-toxic range? A) 30 minutes B) 1 hour C) 2 hours D) 3 hours Ans: B Feedback: Half-life is the time required for the serum concentration of a drug to decrease by 50%. After 1 hour, the serum concentration would be 25 units/mL (50/2) if the body can properly metabolize and excrete the drug. After 2 hours, the serum concentration would be 12.5 units/mL (25/2) and reach the nontoxic range. In 30 minutes the drug level would be 37.5 units/mL, whereas in 3 hours the drug level would be 6.25. 3. A patient has recently moved from Vermont to Southern Florida. The patient presents to the clinic complaining of dizzy spells and weakness. While conducting the admission assessment, the patient tells the nurse that he have been on the same antihypertensive drug for 6 years and had stable blood pressures and no adverse effects. Since his move, he has been having problems and he feels that the drug is no longer effective. The clinic nurse knows that one possible reason for the change in the effectiveness of the drug could be what? A) The impact of the placebo effect on the patients response. B) The accumulative effect of the drug if it has been taken for many years. C) The impact of the warmer environment on the patients physical status. D) Problems with patient compliance with the drug regimen while on vacation. Ans: C Feedback: Antihypertensive drugs work to decrease the blood pressure. When a patient goes to a climate that is much warmer than usual, blood vessels dilate and the blood pressure falls. If a patient is taking an antihypertensive drug and moves to a warmer climate, there is a chance that the patients blood pressure will drop too low, resulting in dizziness and feelings of weakness. Even mild dehydration could exacerbate these effects. Most antihypertensives are metabolized and excreted and do not accumulate in the body. Patients must be very compliant with their drug regimen on vacation. After several years on an antihypertensive drug, the effects of that drug are known; therefore, the placebo effect should not be an issue.

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Pharmacology 7th Edition By Karen Whalen
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Pharmacology 7th Edition by Karen Whalen

Voorbeeld van de inhoud

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Test Bank for Lippincott Illustrated Reviews:
Pharmacology 7th Edition by Karen Whalen
ALL CHAPTERS 1-48 WITH RATIONALES|A+GRADED
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3.The nurse is teaching a patient who will be discharged home with a prescription for an enteric- coated
tablet. Which statement by the patient indicates understanding of the teaching?
a. I may crush the tablet and put it in applesauce to improve absorption.
b. I should consume acidic foods to enhance absorption of this medication.
c. I should expect a delay in onset of the drugs effects after taking the tablet.
d. I should take this medication with high-fat foods to improve its action. ANS: C
Enteric-coated tablets resist disintegration in the acidic environment of the stomach and disintegrate when
they reach the small intestine. There is usually some delay in onset of actions after taking these
medications. Enteric-coated tablets should not be crushed or chewed, which would alter the time and
location of absorption. Acidic foods will not enhance the absorption of the medication. The patient should
not to eat high-fat food before ingesting an enteric-coated tablet, because high-fat foods decrease the
absorption rate.


DIF: COGNITIVE LEVEL: Applying (Application) REF: dm 3 TOP: NURSING PROCESS: Nursing
Intervention
MSC: NCLEX: Physiological Integrity: Pharmacological and Parenteral Therapies


4.A patient who is newly diagnosed with type 1 diabetes mellitus asks why insulin must be given by
subcutaneous injection instead of by mouth. The nurse will explain that this is because
a. absorption is diminished by the first-pass effects in the liver.
b. absorption is faster when insulin is given subcutaneously.
c. digestive enzymes in the gastrointestinal tract prevent absorption.
d. the oral form is less predictable with more adverse effects. ANS: C
Insulin, growth hormones, and other protein-based drugs are destroyed in the small intestine by digestive
enzymes and must be given parenterally. Because insulin is destroyed by digestive enzymes, it would not
make it to the liver for metabolism with a first-pass effect. Subcutaneous tissue has fewer blood vessels,
so absorption is slower in such tissue. Insulin is given subcutaneously because it is desirable to have it
absorb slowly.
DIF: COGNITIVE LEVEL: Understanding (Comprehension) REF: dm 3 TOP: NURSING PROCESS:
Nursing Intervention: Patient Teaching
MSC: NCLEX: Physiological Integrity: Pharmacological and Parenteral Therapies
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5.The nurse is preparing to administer an oral medication that is water-soluble. The nurse understands that
this drug
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a. must be taken on an empty stomach.
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b. requires active transport for absorption.
c. should be taken with fatty foods.
d. will readily diffuse into the gastrointestinal tract. ANS: B
Water-soluble drugs require a carrier enzyme or protein to pass through the GI membrane.


DIF: COGNITIVE LEVEL: Understanding (Comprehension) REF: dm 4 TOP: NURSING PROCESS:
Nursing Intervention
MSC: NCLEX: Physiological Integrity: Pharmacological and Parenteral Therapies


6.A nurse is preparing to administer an oral drug that is best absorbed in an acidic environment. How will
the nurse give the drug?
a. On an empty stomach
b. With a full glass of water
c. With food
d. With high-fat food ANS: C
Food can stimulate the production of gastric acid so medications requiring an acidic environment should
be given with a meal. High-fat foods are useful for drugs that are lipid soluble.
DIF: COGNITIVE LEVEL: Applying (Application) REF: dm 4 TOP: NURSING PROCESS: Nursing
Intervention
MSC: NCLEX: Physiological Integrity: Pharmacological and Parenteral Therapies


7.The nurse is preparing an injectable drug and wants to administer it for rapid absorption. How will the
nurse give this medication?
a. IM into the deltoid muscle
b. IM into the gluteal muscle
c. SubQ into abdominal tissue
d. SubQ into the upper arm ANS: A


Drugs given IM are absorbed faster in muscles that have more blood vessels, such as the deltoid, rather
than those with fewer blood vessels, such as the gluteals. Subcutaneous routes are used when absorption
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needs to be slower and more sustained.
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