A client is experiencing sickle cell crisis precipitated by a right lower lobe pneumonia. The vital signs are: HR-110/min: RR-28; B/P-96/54: T-100.8 PO: Pulse Oximetry-96%. What is the best nursing action?

Maintain IV fluid infusion and assess adequacy of hydration

Provide continuous sedation for pain relief

Insert an indwelling (Foley) catheter and monitor hourly urinary output

Prepare for endotracheal intubation and ventilatory support