A nurse is caring for a client who asks about the purpose of advance directives. Which of the following statements should the nurse make?

Choice A rationale

Regulating the flow rate by aligning the rate with the top of the ball inside the flow meter is a common practice in oxygen therapy. However, this action is not the most critical aspect to include when reviewing evidence-based practice principles about administration of oxygen therapy with a newly licensed nurse.

Choice B rationale

Regulating oxygen via nasal cannula at a flow rate of no more than 6 L/min is indeed an important aspect of oxygen therapy. Oxygen delivered at higher rates using a traditional nasal cannula can dry out sinus passages and lead to nosebleeds. Nasal cannula is typically started at 2L/min and then titrated upwards to as high as 6L/min, although 2-4L/min is ideal. This delivers 25-40% FIO2, depending upon their respiratory rate, tidal volume, and amount of mouth breathing. Therefore, this action should be included when educating a newly licensed nurse about the administration of oxygen therapy.

Choice C rationale

Ensuring the reservoir bag of a partial rebreathing mask remains deflated is not a recommended practice. A partial rebreathing mask is a face mask with a reservoir bag that delivers moderate to higher concentrations of oxygen. Frequent inspection of the reservoir bag is required to ensure that it remains inflated; if it is deflated, exhaled air collects in it, which results in the patient rebreathing large amounts of exhaled carbon dioxide. Therefore, this action should not be included when educating a newly licensed nurse about the administration of oxygen therapy.

Choice D rationale

Using petroleum jelly to lubricate the patient’s nares, face, and lips is not recommended. Even though use of intranasal petroleum jelly is common, it is not recommended. The heaviness of the base does not allow normal secretion and/or absorption of fluids or medications. Vitamin E oil is a much more appropriate and equally available remedy. This lighter nonpetroleum lubricant has a natural emollient effect. Therefore, this action should not be included when educating a newly licensed nurse about the administration of oxygen therapy. Dressing Dressing Explore

Choice A rationale

Cucumbers are a good source of hydration due to their high water content, but they are not particularly high in potassium.

Choice B rationale

Corn is a versatile vegetable that provides a good source of fiber, but it is not particularly high in potassium.

Choice C rationale

Asparagus is a nutrient-rich vegetable known for its diuretic properties, but it is not particularly high in potassium.

Choice D rationale

Avocados are a nutrient-dense fruit that is high in healthy fats and also a good source of potassium. They are a great food choice for a client at risk for hypokalemia.