flow triggering
Ventilator sensitivity setting that initiates mechanical breaths based on patient-generated airflow changes rather than pressure changes.
Full Definition
Flow triggering is a ventilator parameter that determines how sensitive the machine is to a patient's breathing efforts. Unlike pressure triggering, which responds to negative pressure generated by patient inspiration, flow triggering detects the slight decrease in expiratory flow that occurs when a patient begins to inhale. This method is generally more sensitive and responsive than pressure triggering, allowing for better patient-ventilator synchrony and reduced work of breathing. Flow triggering is measured in liters per minute and typically set between 1-5 L/min, with lower values providing greater sensitivity.
Usage
Usage note: Hyphenate when used as a compound modifier; use as two words when functioning as a noun phrase.
In Context
- "The respiratory therapist adjusted the flow triggering to 2 L/min to improve patient comfort." — Ventilator adjustment note
- "Flow triggering sensitivity was optimized to reduce auto-triggering events." — Quality improvement report