How should a nurse position a patient for a colonoscopy test?

Daman & Diu Staff Nurse - 2018

Medical & Surgical Nursing

Easy

Appeared in: Daman & Diu Staff Nurse - 2018

Explanation

The standard initial position for a colonoscopy is the left lateral decubitus, often referred to as the Sims' position.
In this position, the patient lies on their left side with their knees bent and drawn up towards the chest.
This specific positioning utilizes the natural anatomy of the large intestine, straightening the path through the sigmoid colon, which facilitates smoother and safer insertion of the colonoscope.
Flexing the knees also helps to relax the abdominal muscles, enhancing patient comfort and making the procedure easier to perform.

Option B: Lying on the right side is incorrect for the initial insertion of the colonoscope because it does not align with the natural anatomy of the sigmoid colon.
Option C: The knee-chest position is generally not the standard for a full colonoscopy as it can be uncomfortable for the duration of the procedure and the left lateral position provides adequate access.
Option D: The prone position (lying flat on the stomach) is incorrect as it does not allow for access to the anus for scope insertion.

Clinical Relevance

Nursing practice connection: Use the key finding related to Patient positioning for endoscopic procedures to guide bedside assessment, documentation, and the next nursing action.
Proper patient positioning is a fundamental nursing responsibility that directly impacts the safety, efficacy, and comfort of a colonoscopy.
Nurses must continuously monitor the patient's vital signs, oxygen saturation, and comfort level, especially under sedation, and be prepared to assist with repositioning as directed by the endoscopist to facilitate scope advancement.
Post-procedure, the nurse monitors for complications such as perforation (signs include abdominal pain, distention, fever, rectal bleeding) and ensures the patient is safe until the effects of sedation have worn off.

How to Approach the Question

First, identify the key procedure in the question: 'colonoscopy'.
Recall the basic anatomy of the large intestine, specifically that it begins with the rectum and sigmoid colon on the left side of the lower abdomen.
Think about the goal of positioning: to make a pathway for the scope. To get into the sigmoid colon easily, you want to straighten its natural 'S' curve.
Evaluate the options based on this anatomical knowledge. Lying on the left side (left lateral) aligns the sigmoid colon correctly for initial insertion.
Eliminate other positions. Right side would work against the anatomy for starting. Knee-chest is for more limited exams. Prone offers no access.
Select the option that describes the left lateral position with bent knees, which is the standard protocol.

Concept Tested & Keywords

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E6 Nursing Brunner Adult Health 3SA Vol 1 Part 2 p. 83-85

E6 Nursing Fundamentals Taylor p. 210-212