A nurse is caring for a child who has red marks across his cheeks. Which of the following actions should the nurse take?

Choice A reason: Headache is a sign of oxygen toxicity, which is a condition that occurs when the client receives too much oxygen for a prolonged period of time. Oxygen toxicity can damage the lungs and other organs, and cause symptoms such as confusion, seizures, and respiratory failure. The nurse should instruct the client to report headache and adjust the oxygen flow rate accordingly.

Choice B reason: Dry mouth is not a sign of oxygen toxicity, but it could be a side effect of some medications or a result of dehydration. The nurse should instruct the client to drink plenty of fluids and use a humidifier or a nasal saline spray to moisten the mucous membranes.

Choice C reason: Increased appetite is not a sign of oxygen toxicity, but it could be a positive outcome of oxygen therapy, as it indicates improved oxygenation and metabolism. The nurse should encourage the client to eat a balanced diet and monitor their weight and nutritional status.

Choice D reason: Nausea is not a sign of oxygen toxicity, but it could be a side effect of some medications or a symptom of another condition, such as gastroesophageal reflux disease (GERD) or peptic ulcer disease (PUD). The nurse should instruct the client to take their medications as prescribed and avoid foods that trigger nausea, such as spicy, fatty, or acidic foods.

Choice A reason: Continuing to monitor the client is not the best action, as it does not address the low urine output of the child. The child has a urine output of 20 mL/hr, which is below the expected range of 30 to 40 mL/hr for a 3-year-old child. Low urine output can indicate dehydration, kidney injury, or urinary tract obstruction, which require prompt intervention.

Choice B reason: Performing a bladder scan at the bedside is not the most appropriate action, as it is not the first-line diagnostic tool for low urine output. A bladder scan is a noninvasive ultrasound device that measures the amount of urine in the bladder. It can help detect urinary retention, which is the inability to empty the bladder completely. However, urinary retention is unlikely in a 3-year-old child, and a bladder scan may not be accurate or reliable in children.

Choice C reason: Providing oral rehydration fluids is the best action, as it can help restore the fluid and electrolyte balance of the child. Oral rehydration fluids are solutions that contain water, sugar, and salt in specific proportions that match the body's needs. They can prevent or treat dehydration, which is a common cause of low urine output in children. The nurse should offer the child oral rehydration fluids every 15 to 20 minutes, and monitor the urine output, vital signs, and hydration status.

Choice D reason: Notifying the provider is not the first action, as it is not the most urgent or effective intervention for low urine output. The nurse should notify the provider after providing oral rehydration fluids and assessing the child's response. The nurse should also report any signs or symptoms of dehydration, such as dry mucous membranes, sunken eyes, poor skin turgor, or lethargy. The provider may order further tests or treatments, such as blood tests, urine tests, or intravenous fluids.