A drowsy 72-year-old female complains of difficulty breathing.

Comprehensive and Detailed Explanation From Exact Extract:

The patient’sexcessively high respiratory rate (RR 50),hypoxia (SpO₂ 89%), anddecreased mental status(drowsiness) indicaterespiratory failure, which is theinability to maintain oxygenation or ventilation.

Respiratory distress: Increased effort but adequate compensation

Respiratory arrest: Complete absence of breathing

Respiratory alkalosis: Possible early finding, but not a condition diagnosis

This patient is tiring and losing the ability to ventilate effectively — a hallmark of failure.