A patient experiences a gasoline tank fire when riding a motorcycle and is admitted to the emergency department (ED) with partial-thickness burns on the anterior surfaces of both lower extremities. Which percentage of body surface area should the nurse document in the electronic medical record (EMR)?

Choice A reason: 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 reason: 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 reason: 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 reason: 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.

Choice A reason: Blood alcohol level of 0.09% (90 mmol/L) is not the most important finding for the nurse to report, as this is within the reference range and does not indicate alcohol intoxication or withdrawal, which can affect the client's mental status and mood stability. This is a distractor choice.

Choice B reason: Six hours of sleep in the past three days is not the most important finding for the nurse to report, as this is a common symptom of bipolar disorder during manic episodes and does not require immediate intervention by the health care provider. This is another distractor choice.

Choice C reason: Serum lithium level of 1.6 mEq/L (1.6 mmol/L) is the most important finding for the nurse to report, as this indicates lithium toxicity, which can cause neurological and renal impairment and potentially fatal complications such as seizures, coma, and cardiac dysrhythmias. Therefore, this is the correct choice.

Choice D reason: Weight loss of 10 pounds (4.5 kg) in past month is not the most important finding for the nurse to report, as this may be related to decreased appetite or increased activity during manic episodes and does not pose an immediate threat to the client's health or safety. This is another distractor choice.