A nurse is caring for a patient who is receiving fluids through a peripheral IV catheter.
Which of the following observations at the IV site should the nurse identify as signs of infiltration?

Choice A rationale

A lesion with uniform pigmentation is not typically a sign of skin malignancy. Most benign moles are uniform in color, including shades of tan, brown, and black.

Choice B rationale

The new appearance of petechiae, or small, pinpoint hemorrhages under the skin, is not typically associated with skin cancer. Petechiae can be a sign of a number of conditions, including certain infections, low platelet count, or certain medications.

Choice C rationale

A mole with an asymmetrical appearance is a potential indication of skin malignancy. Asymmetry, where one half of the mole does not match the other, is one of the ABCDEs (Asymmetry, Border irregularity, Color variation, Diameter greater than 6mm, and Evolving size, shape, or color) of melanoma detection.

Choice D rationale

The presence of a papule, a small, raised bump on the skin, is not necessarily indicative of skin cancer. Papules can be a sign of many different skin conditions, including acne, skin infections, or dermatitis.

Choice A rationale: Using a resuscitation bag with 80% oxygen prior to the procedure is inappropriate. While pre-oxygenation is important before suctioning to prevent hypoxia, the oxygen concentration should be 100%, not 80%. Normal oxygen saturation levels are 95% to 100%. Pre-oxygenating with 100% oxygen ensures the patient maintains adequate oxygenation during the brief suctioning period. Using 80% oxygen does not fully optimize oxygen reserves for this purpose.

Choice B rationale: Selecting a suction catheter that is half the size of the tracheostomy lumen is appropriate. This size prevents excessive occlusion of the airway, ensuring adequate airflow during suctioning. The correct catheter size minimizes trauma to the tracheal mucosa and prevents hypoxia. The catheter should not exceed 50% of the tracheostomy diameter to maintain proper airway function, making this the correct action for safe and effective suctioning.

Choice C rationale

Placing the end of the suction catheter in water-soluble lubricant is not recommended. This could introduce bacteria into the airway and increase the risk of infection.

Choice D rationale

Adjusting the wall suction apparatus to a pressure of 170 mm Hg is not correct. The recommended suction pressure for adults is usually between 80 and 120 mm Hg. Suctioning at too high a pressure can cause trauma to the airway.