A nurse is caring for a client who receives intermittent enteral feedings through an NG tube. Before administering a feeding, the nurse should measure the gastric residual for which of the following purposes?
To confirm the placement of the NG tube
To determine the client's electrolyte balance
To remove gastric acid that might cause dyspepsia
To identify delayed gastric emptying
The Correct Answer is D
The nurse should measure the gastric residual before administering a feeding to identify delayed gastric emptying. Gastric residual refers to the volume of formula or contents remaining in the stomach from the previous feeding. Measuring gastric residual helps assess how well the client's stomach is emptying and can indicate if there is delayed gastric emptying.
By measuring gastric residual, the nurse can:
● Determine if the stomach has adequately emptied from the previous feeding. ● Assess the client's tolerance to enteral feedings.
● Detect signs of delayed gastric emptying, which can be indicative of gastrointestinal motility issues or other complications.
● Adjust the feeding rate or make other modifications to the enteral feeding plan based on the amount of residual volume.

Confirming the placement of the NG tube is typically done using other methods, such as an X-ray, pH testing, or auscultation of air insufflation. Gastric residual measurement primarily serves the purpose of assessing gastric emptying, rather than confirming tube placement.
While electrolyte imbalances can be monitored in the overall care of a client receiving enteral feedings, measuring gastric residual specifically focuses on assessing gastric emptying and feeding tolerance, rather than determining the client's electrolyte balance.
Removing gastric acid that might cause dyspepsia is not the primary purpose of measuring gastric residual. Gastric residual measurement aims to evaluate the volume of the previous feeding and assess gastric emptying, rather than focusing on dyspepsia specifically.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Elevating the head of the bed to a semi-Fowler's or high Fowler's position helps prevent aspiration during the feeding. This position facilitates proper digestion and reduces the risk of
regurgitation or reflux. It allows gravity to assist in keeping the feeding in the stomach and reduces the likelihood of complications.

The other actions mentioned are also important steps in the process but should be performed after elevating the head of the bed:
Measure stomach contents: This step is usually done before administering any enteral feeding to check for the presence of residual gastric contents. It helps determine if the client is tolerating previous feedings and guides adjustments in the feeding volume or rate if needed.
Return gastric content into the gastrostomy tube: If there is a significant amount of gastric residual, it is recommended to return the contents into the stomach before administering the feeding. This helps ensure that the client receives the full prescribed amount of the enteral feeding.
Flush the tube with water: Flushing the gastrostomy tube with water before and after the feeding helps maintain tube patency, clears any residual feeding or medication, and prevents clogging.
Correct Answer is ["100"]
Explanation
To calculate the IV flow rate in drops per minute (gtt/min), you can use the following formula: Flow rate (gtt/min) = (Volume to be infused in mL) x (Drop factor) / (Time in minutes) In this case, the volume to be infused is 100 mL, the drop factor is 60 gtt/mL, and the time is 60 minutes.
Flow rate (gtt/min) = (100 mL) x (60 gtt/mL) / (60 min)
Canceling out the mL and min units, the formula becomes:
Flow rate (gtt/min) = 100 x 60 / 60
Flow rate (gtt/min) = 100
Therefore, the nurse should set the IV flow rate to deliver 100 gtt/min.
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