A 10-year-old boy with a cuffed tracheostomy tube is on volume ventilation. At the start of the shift a minimal leak was established at a peak inspiratory pressure of 34 cmH2O. Four hours later the PIP is 19 cmH2O. The most appropriate action would be to

• A. Increase the set minute ventilation
• B. Repeat the minimal leak procedure
• C. Suction the patient
• D. Change to an uncuffed tracheostomy tube

Answer: (B)

The key idea is maintaining a controlled cuff leak around a cuffed tracheostomy tube to protect the tracheal mucosa while still ensuring effective ventilation. A minimal leak means the cuff is inflated enough to seal most of the airway but still allows a small leak at peak inspiration. When the shift starts with a minimal leak and PIP is high (34 cmH2O) but four hours later drops substantially (to 19 cmH2O), it suggests the leak around the cuff has increased or the seal has changed. The appropriate step is to re-establish the minimal leak to current conditions by adjusting the cuff again so there’s only a small leak at peak inspiration. This preserves airway protection and avoids overdistension or under-ventilation. Increasing minute ventilation isn’t indicated because the issue is the cuff seal, not the ventilator setting; suctioning isn’t addressing the cuff seal; and switching to uncuffed would remove the protective leak, increasing risk of mucosal injury and aspiration.