While a patient is receiving tube feeding, the height of the container should be maintained?

Appeared in: SGPGI Nursing Officer-2023

Explanation

The standard height for a gravity tube feeding container is approximately 45 cm (or 18 inches) above the level of the patient's stomach.
This height provides an optimal flow rate, allowing the feeding to be administered over a safe period (typically 30-45 minutes).
It balances the need for a consistent flow with the prevention of complications associated with infusions that are too rapid or too slow.
This practice is based on the principle of gravity, where the height difference creates the pressure needed for the liquid to flow.

Option A: A height of 18 cm is too low for an effective gravity feed. The flow rate would be extremely slow or may stop altogether.
Option C: A height of 72 cm is too high. This would cause the formula to infuse too rapidly, leading to a bolus effect.
Option D: A height of 22 cm is also too low for an effective gravity feed, similar to the 18 cm option.

Clinical Relevance

Nursing practice connection: Use the key finding related to Principles of Enteral Nutrition Administration to guide bedside assessment, documentation, and the next nursing action.
Proper administration of tube feeding is a fundamental nursing skill critical for patient safety and nutritional support.
Incorrectly managing the flow rate can lead to serious complications, including aspiration pneumonia, which has a high mortality rate.
Nurses must not only set up the feed correctly but also monitor the patient's tolerance throughout the infusion.

How to Approach the Question

First, identify that the question is asking for a standard parameter in a common nursing procedure: gravity tube feeding.
Recall the physical principle involved: gravity. The height of the fluid source determines the pressure and thus the flow rate.
Consider the clinical goals: the feeding should be slow and steady, not too fast (to prevent aspiration and GI upset) and not too slow (to ensure adequate nutrition and prevent clogging).
Evaluate the given options. Eliminate the extremes: 18 cm and 22 cm are too low, likely resulting in a very slow flow. 72 cm is very high and would cause a dangerously fast flow.
Select the option that represents the established, safe standard. 45 cm (18 inches) is the commonly accepted height for balancing safety and effectiveness in gravity feeding.

Concept Tested & Keywords

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E6 Nursing Fundamentals Taylor p. 523-525

E6 Nursing Brunner Adult Health 3SA Vol 1 Part 2 p. 96-98

Practise the full SGPGI Nursing Officer-2023

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