A nurse is preparing to administer medication to a preschooler and must convert the child's weight from pounds to kilograms. The child weighs 30 lb. How many kilograms does the child weigh?

(Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

The correct answer is Choice C: 3+ pitting edema.

Choice A rationale:

1+ pitting edema refers to mild pitting edema. It is characterized by a slight indentation that disappears rapidly. A measurement of 6 mm edema is beyond the scope of 1+ pitting edema.

Choice B rationale:

2+ pitting edema indicates moderate pitting edema. It is characterized by a deeper indentation that takes a few seconds to rebound. While 6 mm edema might be associated with 2+ pitting edema, it is not the most accurate description.

Choice C rationale:

3+ pitting edema signifies moderately severe pitting edema. It is characterized by a noticeable indentation that remains for a short duration. A measurement of 6 mm edema aligns with 3+ pitting edema, making it the correct choice.

Choice D rationale:

4+ pitting edema represents severe pitting edema. It is characterized by a deep indentation that persists for a significant amount of time. 6 mm edema is not typically associated with 4+ pitting edema.

The correct answer is choice B: Performance of a paracentesis.

Choice A rationale:

Administration of an enema does not require informed consent in the same way that invasive procedures do. Enemas are typically considered routine nursing interventions and are not as invasive as the other options.

Choice B rationale:

This is the correct choice. A paracentesis is an invasive procedure that involves puncturing the abdominal cavity to withdraw fluid. Informed consent is required for procedures that carry potential risks, and paracentesis falls into this category due to the risk of complications such as infection, bleeding, or organ injury.

Choice C rationale:

Insertion of an indwelling urinary catheter is a common nursing procedure that, while invasive, does not typically require informed consent. However, the nurse should still explain the procedure to the client and obtain verbal consent, but it's not the same level of formal informed consent required for more invasive procedures.

Choice D rationale:

Placement of an NG tube, although uncomfortable, is not as invasive as a paracentesis. In most cases, NG tube placement is considered a medical or nursing intervention rather than a procedure that necessitates formal informed consent.