The Nurse Is Preparing to Suction an Infant with a Tracheostomy

The nurse is preparing to suction an infant with a tracheostomy tube.Which action by the nurse follows appropriate procedure?

A) Using a suction catheter that is half the diameter of the tracheostomy tube
B) Suctioning 0.5 cm to 1.25 cm (0.2-0.5 inches) beyond the tip of the tracheostomy tube
C) Hyperoxygenating with 90% oxygen to avoid oxygen toxicity
D) Using less than 150 mm Hg negative pressure