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A patient with severe upper airway obstruction is receiving an 80/20 heliox mixture via a non-rebreather mask. The oxygen flowmeter is set at 12 L/min. What is the actual total flow delivered to the patient?

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?

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 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?