A Chronic Obstructive Pulmonary Disease (COPD)patient with an Ideal Body

A chronic obstructive pulmonary disease (COPD) patient with an ideal body weight of 65 kg is brought to the emergency department.The patient is short of breath and using accessory muscles.Aerosolized bronchodilators are administered.The arterial blood gas reveals the following: pH 7.31,partial pressure of carbon dioxide (PₐCO₂) 72 mm Hg,partial pressure of oxygen (PₐO₂) 88 mm Hg,oxygen saturation (SₐO₂) 90%,bicarbonate (HCO₃⁻) 32 mEq/L on nasal cannula 2 L/min.The respiratory therapist should recommend which of the following at this time?

A) Intubate, volume-controlled continuous mandatory ventilation (VC-CMV) rate 15 breaths/min, tidal volume (Vᴛ) 650 mL, fractional inspired oxygen (FɪO₂) 0.50, positive end-expiratory pressure (PEEP) 6 cm H₂O.
B) Noninvasive positive pressure ventilation (NPPV) with bilevel positive airway pressure (bilevel PAP) rate 8 breaths/min, inspiratory positive airway pressure (IPAP) 10 cm H₂O, expiratory positive airway pressure (EPAP) 4 cm H₂O.
C) Intubate, pressure-controlled intermittent mandatory ventilation (PC-IMV) rate 10 breaths/min, peak inspiratory pressure (PIP) 30 cm H₂O, FɪO₂ 0.60, PEEP 3 cm H₂O.
D) Administer 30% oxygen via air entrainment mask and continuous bronchodilator therapy.