Ineffective triggering is a form of patient-ventilator asynchrony, which occurs when the mechanical breath is not triggered due to the ventilator failing to detect the patient's inspiratory effort. Low sensitivity settings, auto-PEEP, excessive sedation, or neuromuscular weakness are common factors leading to ineffective triggering. It can result in prolonged mechanical ventilation, extended hospital stay, reduced likelihood of discharge, and higher mortality rates. By observing airway pressure (Paw) waveforms, flow waveform, and the electrical activity of the diaphragm (EAdi), ineffective triggering can be detected.
