Final answer:
The nurse should assess potential causes of the patient's oliguria, such as dehydration or renal issues, review fluid balance, monitor for complications, and notify the healthcare provider for further evaluation and treatment.
Step-by-step explanation:
If a patient's urinary output is below the expected minimal amount, in this case less than 30 mL/hour with only 20 mL/hour being produced, it is a clinical situation known as oliguria. Oliguria may be indicative of severe dehydration, renal disease, or impaired renal function. The role of the nurse is critical in this scenario. An appropriate action would be to assess the patient for potential causes of the decreased urine output, such as dehydration, medication effects, or worsening of the patient's baseline condition. The nurse should also monitor for signs of fluid overload or shock, review recent fluid intake and loss, and check for potential urinary obstructions. Reassessment of the patient's clinical status is necessary along with notifying the healthcare provider of the oliguric state so that further diagnostic testing or treatment can be considered. Ensuring that the patient does not become comatose, or die from untreated conditions leading to insufficient urine output is a priority. Treatments may include adjusting fluid intake, administering medication to improve kidney function, or more aggressive interventions if needed.