A nurse is preparing to apply lidocaine and prilocaine cream to a child prior to the insertion of an IV catheter. Which of the following actions should the nurse plan to take?

Choice A reason: Removing the child's pressure dressing after the first 4 hours is not recommended as it may increase the risk of bleeding. The pressure dressing is typically kept in place longer to ensure hemostasis.

Choice B reason: Maintaining the child's NPO status for 4 to 6 hours post-procedure is a standard practice to prevent nausea and vomiting while anesthesia wears off, but it is not the most critical action in this context.

Choice C reason: Keeping the affected extremity straight for at least 6 hours is essential to prevent bleeding from the catheterization site. This is a critical postoperative care step following arterial cardiac catheterization.

Choice D reason: Monitoring output using an indwelling urinary catheter for the first 24 hours is important for assessing kidney function and fluid balance but is not the immediate priority post-cardiac catheterization.

Choice A reason: Hypothermia is not a common finding associated with inhalation of gasoline. It typically occurs due to exposure to cold temperatures and is not related to chemical inhalation.

Choice B reason: Hyperactive reflexes are not typically associated with gasoline inhalation. They can be a sign of neurological disorders or a response to certain medications, but not commonly from inhalants.

Choice C reason: Mydriasis, which is the dilation of the pupils, can occur with inhalation of gasoline due to its effect on the nervous system. It is a sign that the nurse should be aware of during the assessment.

Choice D reason: Pinpoint pupils are more commonly associated with opioid overdose and not with inhalation of gasoline. The nurse should expect to see dilated pupils rather than constricted ones.