Level 4 Exam 3 medication Quiz

A client with Cushing’s syndrome is prescribed ketoconazole. Which statement by the nurse best explains the purpose of this medication?

• This medication replaces the cortisol your body no longer produces.

• This medication blocks the production of cortisol in your body.

• This medication will help increase your blood pressure.

• This medication acts like a diuretic to remove excess fluid.

Answer explanation

Correct Answer: “This medication blocks the production of cortisol in your body.”

 

Rationale:  Cushing’s syndrome results from excess cortisol levels, which can be caused by adrenal hyperplasia, pituitary overproduction of ACTH (Cushing’s disease), or prolonged corticosteroid use.

 

Ketoconazole is an antifungal medication that also inhibits adrenal corticosteroid synthesis, thereby reducing cortisol production. It is used as a temporary or adjunct therapy to manage hypercortisolism when surgery or radiation is not immediately possible.

 

By lowering cortisol, the drug helps reduce symptoms such as:

• Weight gain and truncal obesity

• Hypertension

• Hyperglycemia

• Mood changes and muscle weakness

 

Rationales for Incorrect Options:

 “This medication replaces the cortisol your body no longer produces.”
Incorrect — That statement describes Addison’s disease treatment with hydrocortisone or prednisone, not Cushing’s.

 “This medication will help increase your blood pressure.”
Incorrect — Cortisol excess already increases blood pressure; ketoconazole helps reduce it.

“This medication acts like a diuretic to remove excess fluid.”
Incorrect — It does not directly cause diuresis; instead, it reduces cortisol-induced fluid retention over time.

A client diagnosed with Addison’s disease is prescribed hydrocortisone. Which statement by the client indicates that teaching has been effective?

• I will stop taking the medication if I start feeling better.

• I will take my medication every day at the same time, even if I feel well.

• I should restrict sodium in my diet while taking this medication.

• If I feel weak or dizzy, I will double my dose.

Answer explanation

Correct Answer: “I will take my medication every day at the same time, even if I feel well.”

 

Rationale:  Addison’s disease is a condition caused by adrenal insufficiency, leading to deficient cortisol and aldosterone production.
Hydrocortisone, a glucocorticoid, replaces the body’s cortisol and helps maintain normal metabolism, immune response, and stress adaptation.

Clients must take hydrocortisone daily for life, even if they feel well, because sudden withdrawal or missed doses can precipitate an Addisonian crisis, a life-threatening emergency characterized by hypotension, shock, and electrolyte imbalance.

Consistent timing helps mimic the body’s normal diurnal rhythm of cortisol secretion (usually higher in the morning).

 

Rationales for Incorrect Options:

“I will stop taking the medication if I start feeling better.”
Incorrect — Addison’s disease requires lifelong corticosteroid therapy. Stopping abruptly can cause adrenal crisis.

 

“I should restrict sodium in my diet while taking this medication.”
Incorrect — Clients with Addison’s disease often need increased sodium intake, especially during hot weather or stress, due to aldosterone deficiency causing sodium loss.

 

“If I feel weak or dizzy, I will double my dose.”
Incorrect — The client should not change the dose independently. Weakness or dizziness may indicate adrenal crisis, requiring immediate medical evaluation and possibly IV hydrocortisone and fluids.

A nurse is caring for a client hospitalized with acute pancreatitis. Which prescribed medication should the nurse question before administration?

• Morphine sulfate for pain

• Ondansetron for nausea

• Acetaminophen for mild pain

• Pantoprazole to reduce gastric acid secretion

Answer explanation

Correct Answer: Acetaminophen (Tylenol) for mild pain

 

Rationale:  Clients with acute pancreatitis often experience elevated liver enzymes or coexisting biliary obstruction. Because acetaminophen is metabolized primarily in the liver, it should be avoided in pancreatitis — especially when liver function is impaired — to prevent hepatotoxicity.

 

Instead, pain control should focus on opioids such as morphine, hydromorphone (Dilaudid), or fentanyl, which are safe and effective for the severe abdominal pain common in pancreatitis.

 

Acetaminophen should be questioned or used cautiously under close provider supervision.

 

Rationales for Incorrect Options:

Morphine sulfate:  Correct to administer — Relieves severe pain by decreasing pancreatic stimulation via relaxation of smooth muscle. Historically, morphine was avoided, but evidence shows it’s safe and effective in pancreatitis.

Ondansetron (Zofran): Correct — Used to control nausea and vomiting, which often accompany acute pancreatitis and can worsen dehydration.

Pantoprazole (Protonix):  Correct — A proton pump inhibitor (PPI) that reduces gastric acid secretion and helps decrease pancreatic enzyme stimulation, preventing further inflammation.

A client with end-stage liver failure is prescribed lactulose. Which finding indicates that the medication is effective?

• Two soft bowel movements per day

• Decreased abdominal distention

• Reduced serum ammonia levels and improved mental status

• Decreased bilirubin levels

Answer explanation

Correct Answer: Reduced serum ammonia levels and improved mental status

 

Rationale:  Lactulose is a hyperosmotic laxative used in clients with liver failure or hepatic encephalopathy.

In liver disease, the liver cannot effectively convert ammonia (NH₃) — a byproduct of protein metabolism — into urea for excretion.

 

The buildup of ammonia leads to neurologic symptoms such as confusion, asterixis (flapping tremor), and decreased LOC.

 

Lactulose works by:

• Trapping ammonia in the stool (converting NH₃ → NH₄⁺ in the colon), and

• Reducing ammonia absorption from the intestine.

 

The medication is effective when the client has 2–3 soft stools per day and shows improved mental status, indicating that ammonia levels are decreasing.

 

Rationales for Incorrect Options:

Two soft bowel movements per day:  Partially correct — This shows that the medication is working mechanically, but effectiveness is measured by lowered ammonia and improved cognition, not just stool frequency.

Decreased abdominal distention: Incorrect — Lactulose does not reduce ascites or distention; diuretics like spironolactone and furosemide are used for that.

Decreased bilirubin levels:  Incorrect — Bilirubin reflects liver cell function and bile excretion, not ammonia metabolism. Lactulose does not lower bilirubin.

A nurse is reviewing medication prescriptions for a client with end-stage liver failure. Which medication order should the nurse question before administration?

• Lactulose

• Acetaminophen

• Furosemide

• Spironolactone

Answer explanation

Correct Answer: Acetaminophen

 

Rationale:  Clients with liver failure have impaired hepatic metabolism, meaning the liver cannot effectively break down or detoxify medications.

 

Acetaminophen (Tylenol) is metabolized primarily in the liver. In liver failure, its use can cause further hepatocellular injury and even acute hepatic necrosis, worsening the condition. Therefore, the nurse should question or hold the order and notify the healthcare provider.

 

Safe alternatives for mild pain might include non-hepatotoxic medications, depending on the client's renal and bleeding status.

 

Rationales for Incorrect Options:

Lactulose (Cephulac):  Correct to give — Lactulose reduces ammonia levels by promoting excretion through the stool. It’s used to prevent or treat hepatic encephalopathy, a common complication of liver failure.

 

Furosemide (Lasix):  Correct to give — A loop diuretic used to manage ascites and fluid overload in clients with liver cirrhosis or portal hypertension. Monitor for electrolyte imbalance and hypovolemia.

 

Spironolactone (Aldactone):  Correct to give — A potassium-sparing diuretic that counteracts aldosterone-related sodium retention seen in cirrhosis with ascites. It’s the preferred diuretic for ascites management.

A client with disseminated intravascular coagulation (DIC) has a platelet count of 28,000/mm³ and is oozing blood from IV sites. The healthcare provider prescribes a platelet transfusion. The nurse understands that the primary purpose of administering platelets is to:

• Replace clotting factors consumed during the coagulation process

• Increase the oxygen-carrying capacity of the blood

• Promote hemostasis by increasing platelet count and aggregation

• Neutralize the effects of circulating heparin

Answer explanation

Correct Answer: Promote hemostasis by increasing platelet count and aggregation

 

Rationale: Platelets play a critical role in primary hemostasis by clumping (aggregating) to form a platelet plug at sites of vascular injury.

 

In clotting disorders such as disseminated intravascular coagulation (DIC), thrombocytopenia, or chemotherapy-induced bone marrow suppression, platelet counts can drop dangerously low (<50,000/mm³), leading to spontaneous bleeding or increased bleeding risk.

 

Administering platelet concentrates helps increase the platelet count and promote clot formation, thereby reducing bleeding and restoring hemostasis.

 

Rationales for Incorrect Options:

Replace clotting factors consumed during the coagulation process:
Incorrect — Fresh frozen plasma (FFP) replaces clotting factors, not platelets.

 

Increase the oxygen-carrying capacity of the blood:
Incorrect — Packed red blood cells (PRBCs) increase oxygen delivery, not platelets.

 

Neutralize the effects of circulating heparin:
Incorrect — Protamine sulfate is the antidote for heparin, not platelets.

A nurse is caring for a client diagnosed with disseminated intravascular coagulation (DIC) who has active bleeding and an elevated prothrombin time (PT) and activated partial thromboplastin time (aPTT). The healthcare provider prescribes fresh frozen plasma (FFP). The nurse understands that the purpose of administering FFP is to:

• Replace lost red blood cells and improve oxygen delivery

• Supply platelets to control bleeding

• Replace depleted clotting factors and restore normal coagulation

• Provide albumin to expand plasma volume

Answer explanation

Correct Answer: Replace depleted clotting factors and restore normal coagulation

 

Rationale:  Fresh frozen plasma (FFP) is the liquid portion of whole blood, rich in all clotting factors (I, II, V, VII, VIII, IX, X, XI, XII, XIII) and plasma proteins.

 

It is used to correct coagulation deficiencies in clients who are actively bleeding or at risk for bleeding due to low clotting factor levels.

 

In DIC, massive transfusion, liver disease, or warfarin overdose, FFP replenishes clotting factors that have been consumed or are deficient, thereby reducing bleeding and helping restore hemostasis.

 

Rationales for Incorrect Options:

Replace lost red blood cells and improve oxygen delivery:
Incorrect — This is the role of packed red blood cells (PRBCs), not FFP.

 

Supply platelets to control bleeding:
Incorrect — Platelet concentrates are used when platelet counts are low (thrombocytopenia). FFP contains some platelets but not in therapeutic amounts.

 

Provide albumin to expand plasma volume:
Incorrect — Albumin is a plasma protein given specifically for volume expansion and shock, not for clotting factor replacement.

A nurse is caring for a client with disseminated intravascular coagulation (DIC) who is bleeding from intravenous sites and mucous membranes. The healthcare provider prescribes cryoprecipitate. The nurse understands that the purpose of administering cryoprecipitate is to:

• Replace platelets destroyed during the coagulation process

• Restore deficient fibrinogen and clotting factors

• Provide red blood cells to improve oxygen-carrying capacity

• Neutralize circulating heparin to stop the bleeding

Answer explanation

Correct Answer: Restore deficient fibrinogen and clotting factors

 

Rationale:  Cryoprecipitate is a blood product derived from frozen plasma that contains fibrinogen, factor VIII, factor XIII, von Willebrand factor, and fibronectin.

 

It is used to replace fibrinogen and specific clotting factors in clients with clotting disorders such as:

• Disseminated intravascular coagulation (DIC)

• Massive hemorrhage

• Congenital fibrinogen deficiency

• Hemophilia A (factor VIII deficiency)

 

In DIC, clotting factors and fibrinogen are consumed due to widespread clot formation, leading to severe bleeding. Administering cryoprecipitate helps restore hemostasis by replenishing fibrinogen and factor VIII, which are critical for stable clot formation.

 

Rationales for Incorrect Options:

Replace platelets destroyed during the coagulation process:
Incorrect — Platelet concentrates are given when the platelet count is low, not cryoprecipitate.

 

Provide red blood cells to improve oxygen-carrying capacity:
Incorrect — Packed red blood cells (PRBCs) are used to replace RBCs lost due to bleeding or anemia.

 

Neutralize circulating heparin to stop the bleeding:
Incorrect — Protamine sulfate is the antidote for heparin overdose, not cryoprecipitate.

A nurse is caring for a client with a pulmonary embolism who is receiving a continuous heparin infusion. The nurse notes that the client’s aPTT is 120 seconds (therapeutic range: 60–80 seconds) and the client reports bleeding from the gums. Which medication should the nurse anticipate administering?

• Vitamin K (phytonadione)

• Protamine sulfate

• Aminocaproic acid

• Fresh frozen plasma (FFP)

Answer explanation

Correct Answer: Protamine sulfate

 

Rationale:  Protamine sulfate is the specific antidote for heparin toxicity or overdose.

 

Heparin enhances the activity of antithrombin III, preventing clot formation by inhibiting thrombin and other clotting factors.

 

When excessive heparin leads to prolonged aPTT and bleeding, protamine sulfate binds to heparin, neutralizing its anticoagulant effect.

 

The nurse should anticipate holding the heparin infusion and administering protamine sulfate as ordered.

 

Close monitoring of aPTT and bleeding signs is required afterward.

 

Rationales for Incorrect Options:

Vitamin K (phytonadione):
Used as an antidote for warfarin, not heparin.
It promotes synthesis of clotting factors II, VII, IX, and X in the liver.

 

Aminocaproic acid:
Used to treat fibrinolytic bleeding disorders (e.g., after surgery or with thrombolytic therapy), not for heparin overdose.

 

Fresh frozen plasma (FFP):
Contains clotting factors and is used to replace depleted factors in conditions like DIC or massive transfusion, but not specifically as a heparin antidote.

A nurse is providing discharge teaching to a client prescribed warfarin for treatment of a deep vein thrombosis (DVT). Which statement by the client indicates a need for further teaching?

• I will have my blood tested regularly to check my INR.

• I’ll use an electric razor instead of a straight razor.

• I can take aspirin if I have a headache.

• I’ll eat consistent amounts of green vegetables each week.

Answer explanation

Correct Answer:  “I can take aspirin if I have a headache.”

 

Rationale:  Warfarin is an oral anticoagulant that works by inhibiting the synthesis of vitamin K–dependent clotting factors (II, VII, IX, X) in the liver.

 

It’s used for long-term prevention and treatment of thromboembolic disorders, such as DVT, pulmonary embolism (PE), atrial fibrillation, and mechanical heart valves.

 

Aspirin and other NSAIDs can increase the risk of bleeding when taken with warfarin because they also affect platelet function and gastric mucosa.

Clients should avoid aspirin unless prescribed by their healthcare provider.

 

Rationales for Incorrect Options:

“I will have my blood tested regularly to check my INR.”
Correct understanding — INR (International Normalized Ratio) is used to monitor warfarin effectiveness and safety.

• Therapeutic range: 2.0–3.0 for most indications, up to 3.5 for mechanical heart valves.

 

“I’ll use an electric razor instead of a straight razor.”
Correct — Prevents skin cuts and bleeding.

 

“I’ll eat consistent amounts of green vegetables each week.”
Correct — Foods high in vitamin K (e.g., spinach, kale, broccoli) reduce warfarin’s effectiveness. The client should keep intake consistent, not eliminate them entirely.