A patient is brought to the emergency department after falling from a ladder and is exhibiting signs of confusion and disorientation.

The spouse reports that the patient seemed to have lost consciousness.

The nurse has been provided with a list of current medications and healthcare power of attorney.

When reporting to the healthcare provider using SBAR (Situation, Background, Assessment, Recommendation) communication, which information should the nurse provide first?

Management of respiratory distress in a long-term smoker requires knowledge of oxygen delivery systems and airway humidification. The nurse must apply principles of respiratory therapy to select equipment that ensures precise flow regulation and moisture addition to prevent mucosal drying during supplemental oxygen administration.

Choice A rationale: Lamb’s wool is occasionally used to protect skin from pressure sores caused by medical tubing. However, it is not a standard or essential component for initiating oxygen therapy, as modern medical-grade foam dressings or specialized tubing protectors are more commonly utilized in clinical practice.

Choice B rationale: Sterile water is essential for the humidification process when oxygen flow rates exceed 4 liters per minute. It serves as the reservoir liquid in the humidifier bottle to ensure the inhaled gas is moist, preventing the drying of sensitive respiratory mucosa and secretions.

Choice C rationale: Tape is generally avoided when securing nasal cannulas because it can cause skin irritation or breakdown on the face. The cannula is designed to be secured using the integrated sliding bolo or by looping the flexible tubing comfortably behind the patient's ears.

Choice D rationale: A suction canister is used for removing secretions from the oropharynx or trachea. While it may be present at the bedside for safety, it is not a functional component of the oxygen delivery system itself, which focuses on gas inhalation rather than extraction.

Choice E rationale: A humidifier bottle is necessary to add water vapor to the dry oxygen gas provided by the wall source. Humidification is vital for patient comfort and to maintain the integrity of the mucociliary escalator, especially for patients with chronic lung irritation from smoking.

Choice F rationale: The nasal cannula is the primary interface for delivering low-to-medium concentrations of oxygen. It consists of two prongs that fit into the nares, allowing the patient to breathe supplemental oxygen while still being able to speak and consume fluids or meals.

Choice G rationale: A flowmeter is a critical device that attaches to the oxygen wall outlet to regulate the liters per minute delivered. It allows the nurse to accurately titrate the oxygen dose according to the healthcare provider's specific orders and the patient's oxygenation needs.

Choice A rationale
Hyperventilation leads to a decrease in the amount of carbon dioxide (CO2) in the blood. This causes the pH of the blood to increase, resulting in respiratory alkalosis.
Choice B rationale
Respiratory acidosis is caused by a buildup of CO2 in the blood, typically due to hypoventilation (under-breathing). This is not consistent with the patient’s symptoms of hyperventilation.
Choice C rationale
Metabolic alkalosis is typically caused by a significant loss of acid from the body, such as from prolonged vomiting. This is not consistent with the patient’s symptoms.

Choice D rationale
Metabolic acidosis is typically caused by an increase in acid production within the body or a loss of bicarbonate from the body, such as in diabetic ketoacidosis or kidney disease. This is not consistent with the patient’s symptoms.