A patient receiving mechanical ventilation via an endotrache…

A patient receiving mechanical ventilation via an endotracheal tube on A/C pressure-control ventilation has settings of PIP 30 cmH₂O, rate 18/min, PEEP 7 cmH₂O, and FiO₂ of 55%. The high-pressure ventilator alarms sound, and the therapist observes a decrease in bilateral breath sounds along with a drop in exhaled tidal volume from 650 mL to 500 mL. Which condition is most likely responsible?

A postoperative abdominal surgery patient has been receiving…

A postoperative abdominal surgery patient has been receiving intermittent positive-pressure breathing therapy four times daily. Over the past several days, her inspiratory capacity has progressively decreased and she reports increasing shortness of breath. A chest radiograph shows a left lower lobe opacity with a concave upper border. Which condition is most likely present?