What causes high pressure alarms in ventilated patients?

High pressure alarms in ventilated patients typically indicate that the ventilator is experiencing resistance in delivering the set tidal volume or pressure, which is often due to various obstructions in the airway or the breathing circuit. Kinking of the ventilatory tubing creates an obstruction, preventing normal airflow. Similarly, water accumulation in dependent loops of the tubing can trap moisture that adds resistance to airflow. Mucus in the airway can obstruct the passage, causing pressure to rise as the ventilator struggles to deliver air effectively.

These factors directly lead to increased airway pressures, prompting the alarm. The alarm system is designed to alert healthcare providers of these potential issues, allowing for prompt assessment and intervention to ensure adequate ventilation for the patient.