An adult client is admitted to the critical care unit with systemic inflammatory response syndrome (SIRS) as a result of a postburn infection. The client has a long line peripherally inserted IV catheter for fluid and medication administration and current vital signs include temperature 102.8°F (39.3°C., heart rate 108 beats/minute, respirations 32 breaths/minute. Which action should the nurse implement first?

Choice D is correct because allowing time for the behavior and then redirecting the client to other activities is an effective intervention for a client with OCD who is repeatedly washing the top of the same table. OCD is a disorder characterized by recurrent and intrusive thoughts (obsessions) and repetitive and ritualistic behaviors (compulsions) that cause distress and impairment. The nurse should not interfere with or criticize the client's compulsions, as this can increase anxiety and resistance. The nurse should instead set limits on the time and place for the compulsions and gradually reduce them by offering alternative coping strategies or distractions.

Choice A is incorrect because encouraging the client to be calm and relax for a while is not an effective intervention for a client with OCD who is repeatedly washing the top of the same table. The client may not be able to relax or stop their compulsions, as they are driven by irrational fears or beliefs that are difficult to control. The nurse should not minimize or dismiss the client's feelings, as this can make them feel misunderstood or invalidated.

Choice B is incorrect because teaching the client thought-stopping techniques and how to refocus behaviors is not an effective intervention for a client with OCD who is repeatedly washing the top of the same table. Thought-stopping techniques are cognitive strategies that aim to interrupt or replace negative or unwanted thoughts with positive or neutral ones. However, these techniques may not work for clients with OCD, as their obsessions are often persistent and resistant to change. The nurse should not attempt to teach new skills or challenge the client's thoughts during an acute episode of compulsion, as this can increase anxiety and frustration.

Choice C is incorrect because assisting the client to identify stimuli that precipitate the activity is not an effective intervention for a client with OCD who is repeatedly washing the top of the same table. The client may not be able to identify or avoid the triggers that cause their compulsions, as they are often internal or irrational. The nurse should not focus on finding the cause or meaning of the compulsions, as this can reinforce their significance or validity.

Choice A: Determining the need for urinary catheterization is not a task that the nurse should assign to the PN, as this requires clinical judgment and critical thinking, which are beyond the scope of practice of the PN. This is a distractor choice.

Choice B: Titrating oxygen to prescribed parameters is a task that the nurse can assign to the PN, as this involves following orders and protocols, which are within the scope of practice of the PN. Therefore, this is the correct choice.

Choice C: Receiving a postoperative client and conducting the assessment is not a task that the nurse should assign to the PN, as this requires initial assessment and data collection, which are the responsibility of the registered nurse. This is another distractor choice.

Choice D: Evaluating and updating plans of care for clients is not a task that the nurse should assign to the PN, as this requires nursing diagnosis and outcome identification, which are part of the nursing process that only the registered nurse can perform. This is another distractor choice.