A nurse is preparing to administer methylphenidate 7.5 mg PO to a school-age child who has ADHD. The amount available is methylphenidate oral solution 5 mg/5 mL. How many mL of the medication should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero)

A. Place the client on bedrest: While limiting the client’s activity is important to reduce oxygen demand, it is not the first priority. Immediate actions should focus on improving oxygenation and reducing respiratory distress.

B. Obtain the client's ABG levels: Although obtaining arterial blood gases provides valuable information about oxygenation and acid-base balance, it does not address the immediate need to relieve the client's breathing difficulty and hypoxia.

C. Elevate the head of the client's bed: Elevating the head of the bed promotes lung expansion and improves oxygenation, making it the first action to reduce dyspnea and ease the client’s breathing. It is a simple, quick intervention that can stabilize the client while further assessments are conducted.

D. Prepare the client for a ventilation-perfusion scan: A V/Q scan may be indicated to diagnose conditions like pulmonary embolism, but it is a diagnostic step that follows stabilization. Immediate efforts must first focus on ensuring adequate oxygenation and respiratory support.

A. Maintain 30 ml sterile water in the drainage collection chamber: The sterile water is maintained in the water-seal chamber, not the drainage collection chamber. The water-seal chamber typically holds about 2 cm of water to create a one-way valve preventing air from entering the pleural space, not 30 mL in the drainage area.

B. Place the drainage device level with the tube insertion site: The drainage device should always be kept below the level of the chest tube insertion site to allow gravity to assist drainage and to prevent backflow of fluid or air into the pleural cavity, which could cause complications.

C. Keep system tubing connections taped together: Taping the system tubing connections securely helps maintain a closed system, preventing accidental disconnections that could lead to air leaks or loss of the negative pressure needed for proper lung re-expansion. This is essential for the effectiveness of chest tube management.

D. Empty the drainage collection chamber every 4 hr: The drainage collection chamber is not emptied routinely. Instead, it is replaced when full or according to facility protocol. Frequent opening of the system increases the risk of introducing infection or losing the closed negative-pressure system.