Purposes of administering Bacillus Calmette-Guérin (BCG) in cases of bladder cancer are all EXCEPT

ESIC Nursing Officer-7July 2024

Pharmacology

Medium

Appeared in: ESIC Nursing Officer-7July 2024

Explanation

The primary purpose of BCG therapy is not to prevent bleeding. In fact, the local inflammatory response it induces in the bladder can irritate the lining and cause hematuria (blood in the urine) as a common side effect.
While treating the cancer will eventually resolve bleeding caused by the tumor, the direct mechanism of BCG does not involve hemostasis or prevention of bleeding.
The other options listed are all established and primary purposes of intravesical BCG administration for bladder cancer.

Option A: This is a primary purpose of BCG therapy. It works by stimulating a local immune response within the bladder, which leads to the destruction of tumor cells.
Option C: This is a major indication for using BCG. It is proven to significantly reduce the rate of recurrence of non-muscle-invasive bladder cancer, especially high-grade tumors and carcinoma in situ (CIS), following transurethral resection.
Option D: This statement correctly classifies BCG's role. It is not a cytotoxic chemotherapy agent but a biological response modifier that harnesses the patient's own immune system to fight cancer.

Visual 1: Diagram - A diagram illustrating the mechanism of action of intravesical BCG. It would show BCG being instilled into the bladder, attaching to the urothelium, and attracting immune cells (macrophages, T-cells) to attack and eliminate cancer cells.
Visual 2: Flowchart - A flowchart outlining the nursing process for administering intravesical BCG, from pre-procedure checks (e.g., no UTI), the instillation process, patient instructions for retention, and post-procedure safety precautions (e.g., disinfecting the toilet).

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Pharmacology: Immunotherapy for Bladder Cancer as background academic context rather than a clinical decision trigger.
Patient education is a critical nursing responsibility. The nurse must instruct the patient to retain the BCG solution in the bladder for about 2 hours, changing positions every 15 minutes to ensure the medication coats the entire bladder surface.
Safety precautions are vital. For 6 hours after voiding, the patient should add two cups of bleach to the toilet, let it sit for 15-20 minutes before flushing to kill any live bacteria shed in the urine.
Nurses must monitor for adverse effects. While local symptoms like dysuria and mild hematuria are common, systemic symptoms like high fever (greater than 38.5°C), chills, or joint pain could indicate a serious systemic BCG infection (BCG-osis) and must be reported immediately.

How to Approach the Question

First, identify the keywords in the question stem: 'Purposes', 'BCG', 'bladder cancer', and the negative lead-in 'EXCEPT'.
The word 'EXCEPT' signals that three of the options are true statements about the purposes of BCG, and one is false. Your task is to find the false statement.
Recall or look up the mechanism and goals of BCG therapy for bladder cancer. It's known as an immunotherapy.
Evaluate each option against your knowledge: Does BCG have antitumor activity? Yes. Does it prevent recurrence? Yes, that's a primary goal. Is it an immunotherapeutic agent? Yes, that's its classification.
Evaluate the remaining option: Does BCG prevent bleeding? Consider its mechanism (inflammation) and known side effects. Inflammation often causes irritation and can lead to bleeding (hematuria), it does not prevent it.
Conclude that 'Prevents bleeding' is the false statement and therefore the correct answer to this 'EXCEPT' question.

Concept Tested & Keywords

Concept Tested: Pharmacology: Immunotherapy for Bladder Cancer
Stem keywords: Bacillus Calmette-Guérin (BCG), bladder cancer, purposes
Lead-in keywords: EXCEPT
Negative lead-in flag: The question uses the word 'EXCEPT', asking to identify the statement that is NOT a true purpose of BCG therapy.

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