A nurse is caring for a patient who has undergone abdominal surgery. What is the primary purpose of using nasogastric (NG) suction in the immediate postoperative period?

Appeared in: SCTIMST Staff Nurse - 2015 (Set-A)

Explanation

The primary reason for NG suction after abdominal surgery is gastric decompression.
Anesthesia and surgical manipulation often cause a temporary cessation of bowel motility, known as paralytic ileus.
During paralytic ileus, fluid and gas accumulate in the stomach, leading to distension, nausea, and vomiting.
NG suction removes these contents, which prevents vomiting and reduces pressure on the surgical incision, thereby lowering the risk of wound dehiscence.

Option A: This is incorrect for the immediate postoperative period. The gastrointestinal tract is at rest (paralytic ileus), so it cannot absorb nutrients or medications effectively.
Option B: While the drainage from an NG tube can be observed for signs of bleeding (e.g., 'coffee-ground' appearance), this is a secondary assessment, not the primary purpose of the intervention.
Option D: This statement is contradictory. The presence of an NG tube for suction indicates that the patient is not ready for oral intake. The goal is to keep the stomach empty precisely because the patient cannot eat or drink yet.

Clinical Relevance

Nursing practice connection: Use the key finding related to The primary purpose of nasogastric (NG) suction in the immediate postoperative period following abdominal surgery to guide bedside assessment, documentation, and the next nursing action.
A core nursing responsibility is managing patients with NG tubes. This includes ensuring the suction is set correctly, monitoring the drainage, maintaining tube patency, and providing comfort measures like oral and nasal care.
Failure to maintain a patent NG tube can lead to rapid abdominal distension, vomiting, and potentially aspiration pneumonia or strain on the surgical wound.
What if? If the NG drainage suddenly decreases or stops, the nurse's first action should be to assess the tubing for kinks or blockages. If none are visible, the nurse should check the suction equipment and, if protocol allows, irrigate the tube with normal saline to ensure it is patent. This prevents complications from a non-functioning tube.

How to Approach the Question

First, identify the key elements of the question: 'abdominal surgery', 'immediate postoperative period', and 'primary purpose of NG suction'.
Recall the physiological changes that occur after abdominal surgery, specifically the high likelihood of paralytic ileus (temporary stopping of bowel movement).
Consider the consequences of paralytic ileus: accumulation of gas and fluid in the stomach, leading to distension, nausea, and vomiting.
Evaluate the function of NG suction in this context. It is a tube that removes contents from the stomach.
Analyze each option: Option C directly addresses the problem of accumulated fluid and gas (evacuate fluid and flatus) and its consequences (preventing vomiting and tension). The other options describe other uses of NG tubes (feeding), secondary findings (bleeding), or are contradictory (facilitating oral intake).

Concept Tested & Keywords

Concept Tested: The primary purpose of nasogastric (NG) suction in the immediate postoperative period following abdominal surgery.
Stem keywords: abdominal surgery, nasogastric (NG) suction, immediate postoperative period
Lead-in keywords: primary purpose
Clinical cues: The context of 'immediate postoperative period' is crucial as it points towards managing common post-surgical complications like paralytic ileus.

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E6 Nursing Fundamentals Potter Perry 12e Part 6 p. 43-45

E6 Nursing Brunner Adult Health 3SA Vol 1 Part 2 p. 88-90

Practise the full SCTIMST Staff Nurse - 2015 (Set-A)

Attempt every question from this paper in a timed mock, then review the full solution for each one.