A patient with colonic obstruction should be observed for which potential complication?

RAK Nursing Officer - 2019

Medical & Surgical Nursing

Easy

Appeared in: RAK Nursing Officer - 2019

Explanation

Colonic obstruction blocks the normal passage of intestinal contents, causing a significant increase in pressure inside the colon proximal to the blockage.
This increased intraluminal pressure can exceed the pressure in the capillaries and veins supplying the bowel wall, leading to compromised blood flow (ischemia).
Prolonged ischemia results in the death of the bowel tissue, a condition known as necrosis.
Necrotic bowel is weak and prone to rupture (perforation), which can spill intestinal contents into the abdominal cavity, causing life-threatening infection (peritonitis and sepsis).

Option A: Hepatitis is inflammation of the liver, typically caused by viral infections (like Hepatitis A, B, C), alcohol, or toxins.
Option B: Cirrhosis is the late-stage scarring (fibrosis) of the liver, which is a chronic and progressive condition, not an acute complication of bowel obstruction.
Option D: Pancreatitis is inflammation of the pancreas. While severe abdominal conditions can sometimes cause systemic inflammation, pancreatitis is not a direct or common complication of colonic obstruction.

Clinical Relevance

Nursing practice connection: Use the key finding related to Complications of Colonic Obstruction to guide bedside assessment, documentation, and the next nursing action.
A key nursing responsibility is to monitor for the transition from a simple obstruction to a strangulated one. This involves vigilant assessment of pain, vital signs, and abdominal examination.
A change in the nature of pain from intermittent and colicky to constant and severe is a major red flag for ischemia and necrosis, requiring immediate escalation to the surgical team.
What if? If a patient with a known colonic obstruction suddenly becomes afebrile but develops hypotension and tachycardia with a rigid abdomen, the nurse should suspect bowel perforation and septic shock, which is a surgical emergency.

How to Approach the Question

First, identify the core condition in the question stem: 'colonic obstruction'.
Next, analyze the question's requirement: it asks for a 'potential complication'. This means you need to think about the direct physiological consequences of the obstruction.
Consider the pathophysiology of a blockage in a hollow organ like the colon. A blockage leads to a buildup of contents and pressure behind it.
Evaluate each option based on this pathophysiology. Does increased pressure in the colon lead to liver inflammation (Hepatitis), liver scarring (Cirrhosis), bowel tissue death (Necrosis), or pancreas inflammation (Pancreatitis)?
The most direct and dangerous consequence of pressure cutting off blood supply is tissue death. This makes Bowel Necrosis the most logical answer.
Eliminate the other options by recalling their primary causes, which are unrelated to a mechanical obstruction in the colon.

Concept Tested & Keywords

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