PGIMER NO - 2020: Before operation purpose of neomycin administration?

PGIMER NO - 2020

Medical & Surgical Nursing

Easy

Appeared in: PGIMER NO - 2020

Explanation

The primary goal of administering neomycin before bowel surgery is to prevent postoperative surgical site infections (SSIs).
Neomycin is an antibiotic that is poorly absorbed from the gut, allowing it to act locally to kill or inhibit the growth of intestinal bacteria.
This process, often called 'bowel sterilization' or 'gut decontamination', reduces the bacterial load, thereby minimizing the risk of infection if the bowel is perforated and its contents spill into the sterile peritoneal cavity during the operation.
This prophylactic measure is a critical step in preparing a patient for colorectal surgery to avoid severe complications like peritonitis.

Option B: This statement describes the mechanism of action, not the ultimate clinical purpose. While neomycin does decrease bacterial growth, this action is performed in order to prevent a postoperative infection.
Option C: Neomycin is an antibiotic and has no properties to prevent or treat constipation. In fact, by altering gut flora, it can sometimes cause diarrhea.
Option D: While changing the gut microbiome can affect gas production, this is not the intended therapeutic purpose of administering neomycin preoperatively. The primary concern is preventing life-threatening infections.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Surgical Antibiotic Prophylaxis as background academic context rather than a clinical decision trigger.
Preventing Surgical Site Infections (SSIs) is a major patient safety goal and a key nursing responsibility in perioperative care. SSIs are considered a 'never event' by many healthcare systems.
Nurses are responsible for ensuring that prophylactic antibiotics are administered according to the surgeon's orders and hospital protocol, which often specifies administration within 60 minutes before the surgical incision.
Patient education is crucial. The nurse should explain the purpose of the antibiotic is to prevent infection after surgery, which can help with patient compliance and understanding.

How to Approach the Question

First, identify the keywords in the question: 'neomycin', 'before operation', and 'purpose'.
Recall the drug class of neomycin, which is an aminoglycoside antibiotic.
Consider the context: 'before operation'. This points towards a prophylactic (preventative) use.
Analyze the options in the context of giving an antibiotic before surgery. The main reason to give an antibiotic is to prevent infection.
Differentiate between the ultimate goal (preventing infection) and the mechanism to achieve it (decreasing bacteria). In questions asking for the 'purpose', the overall clinical goal is usually the best answer.
Eliminate options that are clearly incorrect or unrelated to the primary function of an antibiotic, such as preventing constipation or gas formation.

Concept Tested & Keywords

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E6 Nursing Fundamentals Potter Perry 12e Part 6 p. 184-186

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