Burns Pediatric Primary Care 7th Edition Test Bank Related

Review Burns Pediatric Primary Care 7th Edition Test Bank related questions and content

A client is receiving the cell cycle-nonspecific alkylating agent thiotepa (thioplex), 60 mg weekly for 4 weeks by bladder instillation as part of a chemotherapeutic regimen to treat bladder cancer. The client asks the nurse how the drug works. How does thiotepa exert its therapeutic effects?

  • A. It interferes with deoxyribonucleic acid (DNA) replication only.
  • B. It interferes with ribonucleic acid (RNA) transcription only.
  • C. It interferes with DNA replication and RNA transcription.
  • D. It destroys the cell membrane, causing lysis.
Correct Answer: C

Rationale: Thiotepa is a cell cycle-nonspecific alkylating agent that exerts its therapeutic effects by interfering with both DNA replication and RNA transcription. The alkylating properties of thiotepa lead to the cross-linking of DNA strands, ultimately inhibiting DNA replication. Additionally, thiotepa can also disrupt RNA synthesis, further affecting protein production and cell function. This combined action on DNA replication and RNA transcription contributes to the cytotoxic effects of thiotepa on rapidly dividing cancer cells.