Which intervention is NOT effective in preventing positional asphyxia?

Keeping subjects restrained in a face-down position is recognized as an ineffective intervention for preventing positional asphyxia. This position can severely limit the subject's ability to breathe, especially if they are restrained, as it puts pressure on the chest and abdomen. When an individual is face down, their airways are more vulnerable to obstruction, and they can quickly become unable to ventilate effectively.

The other options focus on actions that promote safety and the well-being of the subject. Encouraging movement allows for better airflow and reduces the risk of asphyxia. Restraining a subject in a standing position is preferable to being face down because it maintains the airway more effectively. Monitoring for signs of distress is crucial to quickly recognize any problems before they escalate and potentially lead to asphyxia.

Overall, recognizing the dangers associated with specific restraint positions is essential in ensuring safety and preventing life-threatening situations like positional asphyxia.