Mesna is given with cyclophosphamide to :
**Core Concept**
Mesna is a medication used to prevent hemorrhagic cystitis, a potential side effect of certain chemotherapy agents. It works by binding to and inactivating acrolein, a toxic metabolite of cyclophosphamide.
**Why the Correct Answer is Right**
Mesna is specifically given with cyclophosphamide to prevent hemorrhagic cystitis, a condition characterized by bleeding from the bladder lining. This occurs due to the formation of acrolein, a toxic metabolite of cyclophosphamide, which damages the bladder mucosa. Mesna binds to acrolein, forming a stable complex that is excreted in the urine, thus preventing the damage to the bladder lining.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is not relevant to the use of mesna with cyclophosphamide.
**Option B:** While mesna may have some protective effects on the bladder, its primary use is not to prevent nephrotoxicity.
**Option C:** This option is not accurate, as mesna is not used to prevent cardiotoxicity.
**Clinical Pearl / High-Yield Fact**
It's essential to remember that mesna is a specific antidote for hemorrhagic cystitis caused by cyclophosphamide and ifosfamide. Always consider the potential for hemorrhagic cystitis when administering these chemotherapy agents.
**Correct Answer:** C. to prevent hemorrhagic cystitis.