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A 65-year-old male with a history of long-standing hypertension presents to the emergency department with acute shortness of breath. Chest radiograph shows diffuse, fluffy bilateral infiltrates, and laboratory testing reveals a B-type natriuretic peptide (BNP) level of 980 pg/mL. Which condition is most likely?

An intubated patient on volume-controlled ventilation develops high-pressure alarms. The patient becomes cyanotic with a heart rate of 46/min, and a suction catheter cannot be passed through the endotracheal tube. Which action should the respiratory therapist take?

An asthmatic patient  with increased RAW is on CMV. What I:E ratio is the most appropriate for this patient to prevent air trapping

A hematoma begins to form at the right radial artery site immediately after an arterial blood gas sample is drawn. What should the respiratory therapist do first?

A 65-year-old patient with a history of hypertension presents to the emergency department conscious, diaphoretic, and complaining of chest pain. What should the respiratory therapist do first?

Which ventilatory strategy is most appropriate for a patient with severe hypoxemia secondary to acute lung injury or ARDS?

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 postoperative abdominal surgery patient has been receiving intermittent positive-pressure breathing therapy four times daily. Over the past several days, her inspiratory capacity has progressively decreased and she reports increasing shortness of breath. A chest radiograph shows a left lower lobe opacity with a concave upper border. Which condition is most likely present?

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?

Which of the following is not an indicator of an appropriate level of PEEP therapy?