Ace the Airwaves: 2026 RRT-NPS Neonatal/Pediatric Practice Test - Breathe Easy and Rise to the Top!

This mnemonic is used to rapidly identify the four most common causes of ventilation failure in airway management. It stands for Displacement, Obstruction, Pneumothorax, Equipment failure.

Displacement means the tube has moved from its proper position, so ventilation becomes ineffective—extubation or advancement into a bronchus are classic scenarios. Obstruction refers to a blockage in the tube or airway from mucus, blood, or kinks, which raises pressures and reduces delivered tidal volume. Pneumothorax is air accumulating in the pleural space, causing sudden ventilation collapse with signs like hypoxia and often unequal chest movement or diminished breath sounds. Equipment failure covers problems with the ventilator circuit itself—disconnections, leaks, sensor or power failures, or other malfunctions requiring immediate circuit and device checks.

The other options use terms that aren’t the standard components of this mnemonic, such as effusion (fluid in the pleural space), occlusion (not the accepted term here), or disorder (not part of the mnemonic). The listed four components precisely match the DOPE framework.