An adult patient visits the clinic expressing concern about a lump that appeared on their neck about a week ago.

Upon examination, the nurse finds a large, non-tender, hardened left subclavian lymph node without any overlying tissue inflammation.

What could these findings indicate?

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
If a patient suddenly experiences numbness and weakness on the right side of their body, including their arm and leg, and a distinct droop on the right side of the patient’s face, these are warning signs of a stroke. The nurse’s first course of action should be to initiate two large- bore IV catheters and review the inclusion criteria for IV fibrinolytic therapy. This is because rapid administration of fibrinolytic therapy can significantly improve outcomes in patients with acute ischemic stroke.
Choice B rationale
Continuous observation for transient episodes of neurologic dysfunction is important, but the immediate priority is to prepare for potential fibrinolytic therapy.
Choice C rationale
Elevating the head of the bed to 30 degrees and keeping the head and neck in neutral alignment can be beneficial in certain situations, but it is not the immediate priority in this scenario.

Choice D rationale
Administering aspirin can help prevent further clot formation and platelet aggregation in patients with acute coronary syndrome or those at high risk of cardiovascular disease.
However, in the case of a suspected stroke, immediate medical evaluation and potential fibrinolytic therapy are the priorities.