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During post-bronchodilator spirometry, what minimum improvement in FEV₁ is required to confirm reversibility of airway obstruction?

An asymptomatic patient breathing room air has the following arterial blood gas results: pH 7.49, PaCO₂ 12 mmHg, PaO₂ 145 mmHg. The patient exhibits normal breath sounds and no signs of respiratory distress. Which conclusion is most appropriate?

A 45-year-old patient presents with dyspnea and fever. CXR shows increased density with visible air bronchograms. What is the most likely cause?

A patient in the ICU is receiving assist/control volume-control ventilation and is scheduled to undergo bronchoscopy. The respiratory therapist should anticipate all of the following considerations except:

A 22-year-old patient is receiving A/C volume-control ventilation with VT 450 mL, rate 14/min, FiO₂ 0.40, and PEEP 5 cmH₂O. Arterial blood gases show: pH 7.37, PaCO₂ 42 mmHg, PaO₂ 50 mmHg, HCO₃⁻ 23 mEq/L, SaO₂ 80%. Which parameter should be increased to improve oxygenation?

A patient in the emergency department is breathing room air. ABG results are: pH 7.23, PaCO₂ 22 mmHg, PaO₂ 93mmHg, HCO₃⁻ 11 mEq/L, SaO₂ 96%, BE –14. Which intervention should the respiratory therapist recommend?

A patient rescued from a building fire arrives unconscious. Which intervention will best improve oxygenation?

What is normal urine output for a 70kg male?

A client taking lithium reports nausea, tremors, and increased thirst. Which nursing priority is most important to reinforce?

A postoperative abdominal surgery patient has been receiving incentive spirometry every 2 hours. Over the past two days, her inspiratory capacity has progressively declined. Breath sounds at the lung bases are diminished with faint crackles, and a chest radiograph shows plate-like, thin-layered opacities in the lower lobes. Which condition is most likely present?