A nurse is preparing to administer vancomycin 500 mg via intermittent IV infusion every 6 hr. Available is vancomycin 500 mg in 0.9% sodium chloride 100 mL to infuse over 2 hr. The nurse should set the IV pump to deliver how many mL/hr? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.).

The correct answer is Choice A.

Choice A rationale: Placing a sterile kit on the overbed table above waist level maintains the sterility of the field. This position ensures that the kit is not contaminated by lower surfaces or inadvertent touch, which is essential for preventing infection during dressing changes.

Choice B rationale: Opening the outermost flap of the sterile kit toward their body increases the risk of contaminating the sterile field. The first flap should be opened away from the body to maintain the sterility of the field and prevent contamination.

Choice C rationale: Turning their back to the sterile field when coughing is incorrect because it increases the risk of contamination. The nurse should step away from the sterile field and cough into their elbow or use a mask to maintain sterility.

Choice D rationale: Holding a package of sterile gauze 30.5 cm (12 in) above the sterile field when dropping the gauze onto the field is too high and increases the risk of contamination. The gauze should be held closer, approximately 6 inches above the field, to ensure accuracy and sterility.

Choice A rationale:

Lying down while practicing pursed-lip breathing is not the correct instruction. Pursed-lip breathing is usually performed in a sitting or standing position. Lying down can restrict lung expansion and may not effectively support the purpose of this breathing technique, which is to improve airway pressure and reduce air trapping.

Choice B rationale:

"Exhale slowly through your mouth" is the correct instruction for pursed-lip breathing. This technique involves inhaling through the nose for a count of two and exhaling slowly and steadily through pursed lips for a count of four. The goal is to promote better exhalation, prevent airway collapse, and improve oxygen exchange. The rationale behind this choice is grounded in the mechanics of pursed-lip breathing, which helps create backpressure in the airways, maintaining them open and aiding in proper exhalation.

Choice C rationale:

Inhaling through pursed lips contradicts the proper sequence of pursed-lip breathing. The technique involves inhaling through the nose and exhaling through pursed lips. Inhaling through pursed lips would not provide the intended benefits of the technique.

Choice D rationale:

"Puff your cheeks when exhaling" is not the correct instruction. Puffing the cheeks during exhalation does not contribute to the effectiveness of pursed-lip breathing. This action could potentially impede proper exhalation and defeat the purpose of the technique, which is to control airflow and improve breathing efficiency.