This question tests clinical judgment regarding oxygen therapy and device selection for a COPD client in a long-term care setting with worsening symptoms. Key assessment data include oxygen saturation of 82% on room air, respiratory rate of 32/min, PaCO2 of 62 mm Hg, PaO2 of 48 mm Hg, mild confusion, and increased cough, signifying acute decompensation. Applying a nasal cannula at 1–2 L/min titrated to 88%–92% is the best initial action as it provides low-flow oxygen suitable for COPD to correct hypoxemia without abolishing hypoxic drive. A simple face mask at 10 L/min delivers higher FiO2 risking CO2 retention; a nonrebreather at 15 L/min without titration is excessive; and high-flow nasal cannula at 60 L/min is not initial for stable COPD exacerbations. A key decision-making principle in oxygen therapy is to start with conservative flows in COPD and titrate based on saturation targets. Another principle is to avoid high-concentration oxygen to prevent respiratory acidosis worsening. A transferable strategy for selecting oxygen devices is to prioritize client comfort and disease-specific guidelines when initiating therapy in non-acute settings.

This question tests clinical judgment regarding oxygen therapy and device selection for a COPD client in severe distress. Key assessment data include oxygen saturation of 78% on room air, respiratory rate of 36/min, PaCO2 of 70 mm Hg, PaO2 of 44 mm Hg, and audible wheezing, indicating life-threatening hypoxemia. The nonrebreather mask at 15 L/min is most appropriate as an immediate, short-term intervention to rapidly correct severe hypoxemia while preparing for ventilation support. Nasal cannula at 1–2 L/min is too low for acute severity; Venturi at 24% provides insufficient FiO2; and simple face mask at 4 L/min delivers variable low oxygen inadequate for crisis. A key decision-making principle in oxygen therapy is to prioritize high-flow devices in emergent hypoxemia even in COPD, with close monitoring for hypercapnia. Another principle is to transition to advanced support like BiPAP promptly after stabilization. A transferable strategy for selecting oxygen devices is to escalate to high-concentration options temporarily in critical situations while planning for definitive respiratory interventions.

This question tests clinical judgment regarding oxygen therapy and device selection for a post-operative client with obstructive sleep apnea. Key assessment data include respiratory rate of 10/min, oxygen saturation of 89% on room air, rising end-tidal CO2, drowsiness, and shallow respirations, suggesting hypoventilation due to OSA. Continuous positive airway pressure (CPAP) using prescribed settings is most appropriate as it maintains airway patency and improves oxygenation in OSA clients post-operatively. A nonrebreather at 15 L/min provides high oxygen but does not address airway obstruction; nasal cannula at 6 L/min is inadequate for hypoventilation; and Venturi at 24% offers low FiO2 without positive pressure support. A key decision-making principle in oxygen therapy for OSA is to integrate positive airway pressure to prevent apneic events. Another principle is to adhere to home settings if available to ensure continuity of care. A transferable strategy for selecting oxygen devices is to consider underlying conditions like OSA that require combined oxygenation and ventilatory support post-operatively.

This question tests clinical judgment regarding oxygen therapy and device selection for a post-operative client with sleep apnea receiving opioids. Key assessment data include respiratory rate of 8/min, oxygen saturation of 86% on 2 L/min nasal cannula, snoring, difficult arousal, and breathing pauses, indicating opioid-induced respiratory depression in OSA. Applying CPAP per protocol and notifying the provider is the best initial action as it provides positive pressure to maintain airway and oxygenation. Increasing nasal cannula to 6 L/min does not address airway issues; simple face mask at 3 L/min lacks pressure support; and Venturi at 50% risks masking underlying hypoventilation. A key decision-making principle in oxygen therapy is to prioritize devices that support ventilation in clients with OSA and sedation. Another principle is to act promptly on signs of respiratory compromise post-operatively. A transferable strategy for selecting oxygen devices is to escalate to specialized equipment like CPAP when standard oxygen fails to correct desaturation in at-risk clients.

This question tests clinical judgment regarding oxygen therapy and device selection for a home care patient with chronic heart failure experiencing exertional hypoxemia. The key assessment data influencing the decision include the client's CHF diagnosis, exertional dyspnea, desaturation with activity (84%), adequate resting saturation (90%), mild pulmonary congestion on x-ray, and home care setting. A portable oxygen concentrator with nasal cannula at 2 L/min is the best choice because it provides appropriate supplemental oxygen for activity-related hypoxemia, is practical for home use, allows mobility, and matches the prescribed therapy. Nonrebreather mask (B) is impractical and excessive for home ambulation; Venturi mask at 50% (C) is unnecessarily high and cumbersome for home use; high-flow nasal cannula (D) requires specialized equipment not typically available for home care. The principle is to provide the minimum oxygen needed to maintain SpO2 ≥90% during activities of daily living while promoting independence. When selecting oxygen devices for home care, prioritize portable, user-friendly systems that meet the patient's activity needs while maintaining safety and quality of life.

This question tests clinical judgment regarding oxygen therapy and device selection by identifying when adjustment is needed in a pediatric asthma client. Key assessment data post-treatment include improved wheezing, decreased retractions, respiratory rate of 26/min, and oxygen saturation of 98% on simple face mask at 8 L/min. The finding of 98% saturation and improved work of breathing indicates the need to adjust, as it suggests opportunity to wean oxygen to prevent hyperoxia. Heart rate above 110/min may relate to bronchodilators; thirst is unrelated; normal temperature does not require change. A key decision-making principle in oxygen therapy is to de-escalate support when clinical improvement occurs. Another principle is to monitor for over-oxygenation in resolving exacerbations. A transferable strategy for selecting oxygen devices is to reassess and titrate downward based on saturation and respiratory effort to optimize therapy in pediatrics.

This question tests clinical judgment regarding oxygen therapy and device selection by identifying adjustment needs in a post-operative client with sleep apnea. Key assessment data include respiratory rate of 9/min, oxygen saturation of 90% on 2 L/min nasal cannula, increasing somnolence, shallow breathing, and capnography showing hypoventilation. The respiratory rate of 9/min with hypoventilation despite oxygen indicates the need to adjust, as it suggests inadequate ventilation requiring positive pressure support. Oxygen saturation improvement to 90% is positive but insufficient alone; mild throat dryness is a minor side effect; and stable blood pressure does not necessitate change. A key decision-making principle in oxygen therapy is to assess for hypoventilation signs beyond saturation in sedated clients. Another principle is to escalate to CPAP when low-flow oxygen fails to correct respiratory depression. A transferable strategy for selecting oxygen devices is to integrate ventilatory monitoring like capnography to guide adjustments in high-risk post-operative scenarios.

This question tests clinical judgment regarding oxygen therapy and device selection for a pediatric asthma client with persistent symptoms. Key assessment data include oxygen saturation of 90% on 2 L/min nasal cannula with continued retractions, indicating inadequate response. Switching to a simple face mask at 6–10 L/min titrated to at least 94% is most appropriate to provide higher FiO2 for better support in distress. Decreasing to 1 L/min could worsen; Venturi at 24% is low for asthma; nonrebreather at 15 L/min is for severe cases. A key decision-making principle in oxygen therapy is to escalate delivery when low-flow fails in pediatric exacerbations. Another principle is to target normoxemia while treating underlying bronchospasm. A transferable strategy for selecting oxygen devices is to progress to higher-flow masks based on ongoing assessment of saturation and effort in children.

This question tests clinical judgment regarding oxygen therapy and device selection with a focus on safety education for home use. Key assessment data include the client's use of nasal cannula at 2 L/min and inquiry about fire risk reduction in chronic heart failure. Keeping oxygen at least 10 feet from flames and no smoking is most appropriate to prevent combustion hazards associated with oxygen. Petroleum jelly can be flammable; storing cylinders flat risks damage; self-adjusting flow without provider input is unsafe. A key decision-making principle in oxygen therapy is to emphasize fire safety in home education. Another principle is to promote adherence to prescribed use to avoid complications. A transferable strategy for selecting oxygen devices is to integrate safety instructions with device choice to ensure safe long-term home therapy.

This question tests clinical judgment regarding oxygen therapy and device selection for a pediatric client with asthma in acute distress. Key assessment data include oxygen saturation of 89% on room air, respiratory rate of 40/min, wheezing, nasal flaring, intercostal retractions, and peak flow at 45% of personal best, indicating moderate to severe exacerbation. The simple face mask at 6–10 L/min is most appropriate as it delivers moderate FiO2 (35%–60%) and is tolerated by children in distress. Nasal cannula at 1–2 L/min provides low FiO2 insufficient for hypoxemia; nonrebreather at 15 L/min is for severe cases and may be intimidating; Venturi at 24% offers low precise oxygen but not ideal for acute high needs. A key decision-making principle in oxygen therapy for pediatric asthma is to aim for saturation above 94% while addressing bronchospasm. Another principle is to select child-friendly devices that balance oxygen delivery with comfort. A transferable strategy for selecting oxygen devices is to escalate FiO2 based on severity of respiratory distress and hypoxemia in acute pediatric conditions.