When a patient is on continuous bladder drainage, the bag should not be raised above the hip level because?

SCTIMST Staff Nurse - 2015 (Set-B)

Nursing Foundation

Medium

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

Explanation

Continuous bladder drainage relies on gravity to move urine from the bladder into the collection bag.
Positioning the bag below the bladder ensures a constant downward flow, preventing urine from stagnating or flowing backward.
Raising the bag above the bladder level allows potentially contaminated urine from the tubing and bag to flow back into the bladder, an event known as reflux.
This backflow is a primary and preventable cause of Catheter-Associated Urinary Tract Infections (CAUTI).

Option A: While a bag could fall if not secured properly, this is a general safety or mechanical concern, not the specific medical or physiological reason for the rule about its height.
Option B: The catheter is prevented from being pulled out by securing the tubing to the patient's thigh or abdomen with a fixation device or tape. The height of the bag does not primarily influence catheter securement.
Option D: Bleeding (hematuria) related to a catheter is typically caused by trauma during insertion, removal, or by excessive traction (pulling) on the catheter, which can injure the bladder neck or urethra. Bag position itself does not cause bleeding.

Clinical Relevance

Nursing practice connection: Use the key finding related to Principles of urinary catheter drainage and infection control to guide bedside assessment, documentation, and the next nursing action.
Maintaining the drainage bag below the bladder is a fundamental nursing responsibility to prevent CAUTI, a common and serious healthcare-associated infection.
Nurses must diligently educate patients, family members, and other caregivers on the importance of proper bag positioning, especially during ambulation, transfers, or repositioning in bed.
The drainage bag should never touch the floor, as this is another source of contamination.

How to Approach the Question

First, identify the core concept of the question: the principle behind a specific nursing action (positioning a urinary drainage bag).
Analyze the keywords: 'continuous bladder drainage,' 'raised above hip level,' and 'because.' The question asks for the underlying rationale.
Evaluate each option based on fundamental principles of physics (gravity) and microbiology (infection control).
Option C directly relates to gravity and the risk of backflow (reflux), which is a well-established cause of infection. This is a strong physiological and safety reason.
Options A, B, and D describe other potential problems (mechanical stability, catheter securement, trauma) but are not the primary scientific reason for the specific height rule.
Select the option that provides the most critical medical rationale, which is the prevention of a serious infection.

Concept Tested & Keywords

Concept Tested: Principles of urinary catheter drainage and infection control.
Stem keywords: continuous bladder drainage, drainage bag, raised above hip level
Lead-in keywords: because

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