A nurse is planning care for a client with a phobia.
Which nursing intervention is appropriate for this client?

c) Assessing pain management response.
This is the correct answer because it is the most important and relevant action that the PN should do for a postoperative patient with a PCA machine. A PCA machine is a computerized device that allows the patient to self-administer a preset dose of pain medication, usually an opioid, by pressing a buton. The PCA machine is atached to an intravenous (IV) line that delivers the medication directly into the bloodstream. The PCA machine can provide effective and individualized pain relief for postoperative patients, as well as increase their sense of control and satisfaction¹².
The PN should assess the pain management response of the postoperative patient with a PCA machine by monitoring their pain level, vital signs, oxygen saturation, sedation level, and side effects. The PN should use a valid and reliable pain scale, such as the numeric rating scale (NRS) or the visual analog scale (VAS), to measure the patient's pain intensity and relief. The PN should also check the settings and functioning of the PCA machine, such as the dose, lockout interval, and limit. The PN should document and report the patient's pain management response and any problems or complications with the PCA machine to the health care provider.
a) Coffee ground secretions drainage via nasogastric tube.
This is not the correct answer because it is not a priority action that the PN should do for a postoperative patient with a PCA machine. Coffee ground secretions are dark brown or black granular material that are drained from the stomach via a nasogastric tube. They indicate bleeding in the upper gastrointestinal tract, such as from an ulcer, gastritis, or esophageal varices. Coffee ground secretions are a serious sign that require immediate atention and treatment³. However, they are not directly related to the use of a PCA machine or postoperative pain management. The PN should monitor the nasogastric tube drainage of the postoperative patient and report any coffee ground secretions to the health care provider, but this is not a priority action for a patient with a PCA machine.
b) Nasogastric tube suctioning.
This is not the correct answer because it is not a priority action that the PN should do for a postoperative patient with a PCA machine. Nasogastric tube suctioning is a procedure that involves applying negative pressure to a nasogastric tube to remove gastric contents from the stomach. It can be used to decompress the stomach, prevent vomiting or aspiration, or treat gastrointestinal bleeding or obstruction⁴. However, it is not directly related to the use of a PCA machine or postoperative pain management. The PN should perform nasogastric tube suctioning as ordered by the health care provider and according to protocol, but this is not a priority action for a patient with a PCA machine.

d) Ineffective pain management report.
This is not the correct answer because it is not an action that the PN should do for a postoperative patient with a PCA machine. Ineffective pain management report is an outcome or evaluation that indicates that the patient's pain is not adequately controlled or relieved by the current treatment plan. It may be caused by various factors, such as inadequate dosing, inappropriate medication choice, poor adherence, tolerance, or side effects⁵. However, it is not an action that the PN can implement or perform for a postoperative patient with a PCA machine. The PN should assess and document the patient's pain management response and report any ineffective pain management to the health care provider, but this is not an action for a patient with a PCA machine.

Choice A rationale:
Hyperglycemia is a key symptom of DKA. It occurs when there is an insufficient amount of insulin in the body to allow glucose to enter cells for use as energy. As a result, the body begins to break down fat for fuel, leading to the production of ketones and causing blood glucose levels to rise. Normal blood glucose levels are between 4.0 to 6.0 mmol/L when fasting and up to 7.8 mmol/L two hours after eating2.
Choice B rationale:
Ketonuria, or the presence of ketones in the urine, is another symptom of DKA. When the body breaks down fat for energy, ketones are produced. If too many ketones build up in the blood, they can spill over into the urine1.
Choice C rationale:
Metabolic acidosis occurs in DKA due to the accumulation of ketones in the blood. Ketones are acidic, and when they build up in the blood, they cause the blood to become more acidic, leading to metabolic acidosis1.
Choice D rationale:
Hypokalemia is not a symptom of DKA. In fact, patients with DKA often have high potassium levels in their blood at presentation because acidosis causes potassium to move from inside the cells into the bloodstream1. However, during treatment for DKA, when insulin is administered and acidosis is corrected, potassium moves back into the cells and can lead to low potassium levels or hypokalemia1.
Choice E rationale:
Dehydration is a common symptom of DKA. High blood glucose levels lead to increased urination as the body tries to get rid of the excess glucose. This can result in dehydration1.
Choice F rationale:
Kussmaul respirations are a type of hyperventilation that occurs in DKA as the body tries to get rid of excess acids (ketones) through the lungs by breathing rapidly and deeply1.