Pharmacology Flashcards
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Questions and Answers

Through which primary route is cyclophosphamide excreted?

Kidneys

Which part of the cell does fluorouracil affect during the S phase of the cell cycle?

DNA

Which type of chemotherapy refers to chemotherapeutic drugs packaged in a fat globule?

Liposomal

Which statement is accurate regarding tamoxifen?

<p>It acts as both an agonist and antagonist at estrogen receptor sites.</p> Signup and view all the answers

During which time frame will anti-emetic therapy be most beneficial to J.W. before administering cyclophosphamide?

<p>Just before administration of cyclophosphamide to J.W.</p> Signup and view all the answers

Which location would the nurse prepare chemotherapeutic drugs before administration?

<p>Separate work area</p> Signup and view all the answers

Which chemotherapeutic agent would the nurse expect to administer for Philadelphia chromosome-negative acute lymphoblastic leukemia?

<p>Vincristine liposomal</p> Signup and view all the answers

CYP2D6 inducers have which effect on chemotherapeutic drugs?

<p>Decrease drug concentration</p> Signup and view all the answers

Match the chemotherapeutic drug to its class.

<p>Fluorouracil = Antimetabolites Vincristine = Plant alkaloids Doxorubicin = Antitumor antibiotics Cyclophosphamide = Alkylating drugs</p> Signup and view all the answers

In which phase of the cell cycle do most antimetabolites affect cells?

<p>S phase</p> Signup and view all the answers

A patient with multiple myeloma received cyclophosphamide at 0900. Which time would the nurse expect the drug to peak?

<p>1100</p> Signup and view all the answers

What are the benefits of treating cancer cells with a combination of different classes of chemotherapeutic drugs?

<p>Therapeutic effect in all phases of cancer cells is increased, development of drug resistance is decreased, destruction of cancer cells is increased.</p> Signup and view all the answers

Why must vincristine be given intravenously?

<p>Oral administration has a low absorption rate.</p> Signup and view all the answers

What should the nurse do if a patient with plant allergies is prescribed vincristine?

<p>Notify the health care provider.</p> Signup and view all the answers

Which statement made by the patient indicates a need for further teaching regarding doxorubicin?

<p>I do not have to worry about infection because the drug is an antibiotic.</p> Signup and view all the answers

What action should a nurse take to decrease the risk for occupational exposure when disposing of urine from a patient receiving chemotherapeutic drugs?

<p>Apply a face shield.</p> Signup and view all the answers

What should the nurse do first when a patient is prescribed oral cyclophosphamide 700 mg and weighs 125 pounds?

<p>Hold the drug.</p> Signup and view all the answers

What product would the nurse anticipate administering due to a significant drop in neutrophils?

<p>Colony-stimulating factors (CSFs)</p> Signup and view all the answers

A patient receiving chemotherapeutic drugs complains of mouth lesions. Which drug would the nurse most likely provide?

<p>Topical anesthetic</p> Signup and view all the answers

Which statements made by a male patient indicate an understanding of potential side effects of chemotherapeutic drugs?

<p>I will use a soft toothbrush to brush my teeth. I may need to take stool softeners to avoid constipation. I will bank some of my sperm so I still have the option of having children in the future.</p> Signup and view all the answers

What is the treatment cycle frequency for fluorouracil when prescribed with other agents?

<p>Every 2 weeks.</p> Signup and view all the answers

Study Notes

Pharmacology Key Concepts

  • Cyclophosphamide is primarily excreted through the kidneys.
  • Fluorouracil affects DNA during the S phase of the cell cycle.
  • Liposomal chemotherapy involves drugs packaged in fat globules, enhancing delivery.
  • Tamoxifen functions as both an agonist and antagonist at estrogen receptor sites.

Anti-Emetic Administration

  • Administer anti-emetic therapy just before cyclophosphamide administration to maximize its benefit.

Chemotherapy Administration Protocol

  • Chemotherapeutic drugs should be prepared in a separate work area to ensure safety.
  • Vincristine liposomal is an expected treatment for patients with Philadelphia chromosome-negative acute lymphoblastic leukemia.

Drug Interactions and Effects

  • CYP2D6 inducers, like phenobarbital, decrease the concentration of chemotherapeutic drugs, potentially reducing their efficacy.
  • The S phase is where most antimetabolites exert their effects on cells.

Pharmacokinetics

  • Cyclophosphamide peaks in the bloodstream approximately two hours after administration.

Combination Therapy Advantages

  • Using multiple classes of chemotherapeutic drugs enhances therapeutic effects and reduces drug resistance, increasing cancer cell destruction.

Drug Administration Methods

  • Vincristine must be administered intravenously due to low absorption rates with oral ingestion.
  • In cases of plant allergies (e.g., periwinkle), notify the healthcare provider if prescribing vincristine.

Patient Education

  • Doxorubicin, an antitumor antibiotic, does not prevent infections; patients should remain vigilant about infection risks.
  • Use of face shields while disposing of patient urine mitigates occupational exposure risks.

Dosage Considerations

  • Hold oral cyclophosphamide for patients weighing 125 pounds if prescribed at 700 mg (consider dosage adjustment).
  • Anticipate administering colony-stimulating factors (CSFs) in response to significant neutrophil drop.

Management of Side Effects

  • For patients with mouth lesions due to chemotherapy, topical anesthetics are the most likely intervention to facilitate eating and swallowing.

Patient Understanding of Side Effects

  • Patients should be educated on managing mouth care with a soft toothbrush, and the potential need for stool softeners to alleviate constipation.
  • Banking sperm is advisable for male patients to preserve fertility options post-chemotherapy.

Treatment Schedule

  • Fluorouracil is typically repeated every two weeks as part of a combination chemotherapy regimen for metastatic pancreatic cancer.

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Test your knowledge of key concepts in pharmacology with these flashcards. Covering important drugs, mechanisms, and cellular impacts, this quiz is designed to help reinforce your learning. Perfect for students and professionals alike.

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