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EXPLANATION
✔Correct answer:
Endotracheal intubation and initiation of mechanical ventilation. Acute Respiratory Distress Syndrome (ARDS) is a life-threatening condition characterized by severe hypoxia that persists despite supplemental oxygen therapy. When a non-rebreather mask, which delivers nearly 100% oxygen, fails to correct hypoxia, this indicates a need for advanced airway management. Endotracheal intubation and mechanical ventilation are essential to support oxygenation and ventilation while addressing the underlying pathophysiology of ARDS. Mechanical ventilation allows precise control of oxygen delivery, airway pressure, and tidal volume, which is critical in ARDS to minimize further lung injury (e.g., barotrauma, volutrauma) while ensuring adequate gas exchange.
ARDS occurs due to widespread alveolar damage, often triggered by systemic inflammation (e.g., sepsis, trauma, or aspiration). The damaged alveoli become flooded with protein-rich fluid, impairing gas exchange and leading to refractory hypoxemia (low blood oxygen levels unresponsive to oxygen therapy). Positive pressure ventilation through mechanical ventilation can help recruit collapsed alveoli, improve oxygenation, and maintain optimal gas exchange.
Imagine the lungs as a sponge that has been submerged in water (representing fluid-filled alveoli in ARDS). A non-rebreather mask is like trying to force air into the sponge through gentle blowing—it’s insufficient to push out the water and allow air to get in. Intubation and mechanical ventilation act like using a pump to pressurize the air and help squeeze the water out, allowing the sponge to function properly again.
Nurse Riley should anticipate and prepare for advanced airway management while continuing to monitor Mr. Thompson’s respiratory status closely. Here are the key considerations:
- Prepare for intubation by gathering necessary equipment (e.g., endotracheal tube, laryngoscope, suction equipment, and ventilator).
- Collaborate with the respiratory therapy team and the physician for timely intervention.
- Monitor arterial blood gases (ABGs) to evaluate the effectiveness of interventions and ventilator settings.
- Ensure appropriate sedation and pain management for patient comfort during mechanical ventilation.
- Regularly assess the patient for complications associated with mechanical ventilation, such as ventilator-associated pneumonia (VAP) or barotrauma.
✘Incorrect answer options:
Immediate application of continuous positive airway pressure (CPAP) via a nasal and oral mask. CPAP provides positive airway pressure throughout the respiratory cycle and can be helpful in some respiratory conditions, such as obstructive sleep apnea or early stages of hypoxemia. However, in ARDS with refractory hypoxia, CPAP alone is usually insufficient because it does not allow for the fine control of oxygenation, pressure, and ventilation needed to manage severe hypoxemia.
Administration of furosemide 100 mg intravenously as a bolus. While diuretics like furosemide may be used to manage fluid overload in conditions like pulmonary edema or heart failure, ARDS is primarily an inflammatory process. The hypoxemia in ARDS is not caused solely by fluid overload but by alveolar-capillary damage and fluid leakage into the alveoli. Furosemide is not the priority intervention in this scenario.
Activation of the emergency response system for respiratory arrest. Although Mr. Thompson’s condition is critical, he is not in respiratory arrest (characterized by the complete cessation of breathing) based on the information provided. The priority is advanced airway management (intubation and mechanical ventilation) to prevent respiratory arrest, not activation of a code response at this time.
References
- Ignatavicius, D. D., Workman, M. L., Rebar, C. R., & Heimgartner, N. M. (2018). Medical-Surgical Nursing: Concepts for Interprofessional Collaborative Care. Elsevier.
- Lewis, S. L., Bucher, L., Heitkemper, M. M., & Harding, M. M. (2017). Medical-Surgical Nursing: Assessment and Management of Clinical Problems. Elsevier.