Respiratory Medicine MCQ for NEET PG & FMGE

A 60-year-old patient with pulmonary heart disease has recently experienced worsening cough and shortness of breath, along with confusion. Arterial blood gas (ABG) analysis shows pH 7.31, PaO2 50 mmHg, and PaCO2 80.6 mmHg. What should be administered immediately?

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