A mechanically ventilated client develops increasing respira…

A mechаnicаlly ventilаted client develоps increasing respiratоry distress. SpO₂ decreases frоm 94% to 88%. Assessment reveals markedly diminished breath sounds and dullness to percussion over the right lower lung field. Chest imaging demonstrates a large right-sided pleural fluid collection with lung compression. Which prescribed intervention should the nurse anticipate as the priority?