A 67-yeаr-оld pаtient hоspitаlized with severe COVID-19 pneumоnia has progressively worsening respiratory status. The patient initially required 4 L/min oxygen via nasal cannula but is now receiving high-flow nasal oxygen at 60 L/min with an FiO₂ of 100%. The nurse notes: SpO₂: 82% RR: 38 breaths/min HR: 126 beats/min BP: 92/54 mmHg Increasing accessory muscle use Increasing fatigue Difficulty maintaining an upright position Increasing confusion Bilateral coarse crackles The following ABG is obtained: pH: 7.28 (ref: 7.35 - 7.45) PaCO₂: 52 mmHg (ref: 35 - 45 mmHg) HCO₃⁻: 24 mEq/L (ref: 22 - 26 mEq/L) PaO₂: 52 mmHg (ref: 80 - 100 mmHg) Question: Which interpretations of the patient's current condition are supported by the patient's assessment and clinical data? Select all that apply