A nurse is caring for an infant who has an endotracheal tube in place for mechanical ventilation. Which of the following actions should the nurse take when suctioning the infant's airway?

A peripherally inserted central catheter (PICC) is a long-term intravenous access device used to administer medications, fluids, or nutrition directly into the central circulation. In pediatric clients, PICC lines are typically inserted into large peripheral veins in the upper extremities and advanced toward the superior vena cava. Proper vein selection is essential to ensure safe catheter advancement, reduce complications, and maintain long-term patency. Nurses must understand appropriate anatomical sites used for PICC insertion.

Rationale:
A. The cephalic vein is a suitable site for PICC insertion because it is a large, superficial vein in the upper extremity that allows safe advancement of the catheter toward central circulation. It provides good accessibility and reduces the risk of complications compared to smaller or less stable veins. This makes it a commonly selected site for PICC placement.

B. The femoral vein is not typically used for PICC insertion because it is located in the lower extremity and has a higher risk of infection and thrombosis. Central lines placed in the femoral region are generally avoided for long-term use due to mobility issues and increased complication rates. Therefore, it is not preferred for PICC placement.

C. Scalp veins are sometimes used for peripheral IV access in infants but are not appropriate for PICC insertion. These veins are too small and superficial to accommodate the advancement of a catheter into central circulation. They are only suitable for short-term peripheral access in neonates or infants.

D. The radial vein is not commonly used for PICC insertion because it is a smaller distal vein in the forearm/wrist area and does not provide an optimal pathway for central catheter advancement. PICC lines require larger proximal veins to safely guide the catheter toward central veins. Radial veins are typically used for peripheral IV access or arterial sampling, not central catheter placement.

Suctioning an infant with an endotracheal tube requires careful technique to maintain airway patency while minimizing complications such as hypoxia, trauma, and bradycardia. Infants are especially vulnerable to rapid oxygen desaturation because of their smaller airway size and limited oxygen reserves. Pre-oxygenation and post-oxygenation are essential to reduce the risk of hypoxemia during suctioning. Suctioning should be performed only when indicated and with the least invasive approach possible.

Rationale:
A. Administering supplemental oxygen before and after suctioning is correct because suctioning temporarily removes oxygen along with secretions and can rapidly cause hypoxemia. Pre-oxygenation helps increase oxygen reserves before the procedure, while oxygen after suctioning helps restore normal oxygen saturation. This is especially important in infants due to their high oxygen demand and limited respiratory reserve.

B. Advancing the suction catheter until resistance is felt is not recommended because it can cause trauma to the airway mucosa and damage the delicate tracheal tissues. The catheter should be inserted only to the predetermined appropriate depth based on tube length and institutional guidelines. Forcing the catheter increases the risk of bleeding and irritation.

C. Suctioning for intervals of 10 seconds is too long for an infant and increases the risk of hypoxia and bradycardia. Suction passes should generally be limited to about 5 seconds or less to minimize oxygen loss and physiologic stress. Short, efficient suctioning is safer and better tolerated.

D. Routine suctioning is not appropriate because suctioning should only be performed when clinically indicated, such as visible secretions, decreased oxygen saturation, coarse breath sounds, or increased work of breathing. Unnecessary suctioning increases the risk of airway trauma, infection, and hypoxemia without providing benefit.