Final answer:
In the scenario where an adult patient on continuous enteral feeding has a residual volume of 120 mL after six hours, the nurse should assess for feeding tolerance and refer to clinical guidelines; however, typically, this volume is below the threshold that would require stopping the feeding.
Step-by-step explanation:
The adult patient receiving continuous enteral feeding with a residual volume of 120 mL 6 hours after the last check likely requires an assessment of enteral feeding tolerance. Typically, a residual volume less than 200 mL is considered acceptable for continuing feeding; however, this can vary depending on specific institutional or clinician protocols. If the residual volume is equal to or greater than 500 mL or twice the hourly feeding rate (which would be 160 mL in this case), it generally indicates poor tolerance and may necessitate holding the feeding and reassessment.
Since 120 mL is less than twice the hourly rate, the nurse may proceed with caution and continue monitoring. Each healthcare facility may have its protocol, so the nurse should refer to those guidelines or consult with the medical team.