Flow versus Time Graph
Flow versus Time Graph: constant flow = volume control; decelerating flow = any mode
Category Ventilation
High Frequency Oscillation Ventilation
High Frequency Oscillation Ventilation (HFOV) is an unconventional form of mechanical ventilation that maintains lung recruitment, avoids overdistention, and does not rely on bulk flow for oxygenation and ventilation
Auto Triggering of the Ventilator
OVERVIEW CAUSES Flow distortions caused by: -> always consider patient actually breathing! PRESSURE VERSUS FLOW TRIGGERING ASSESSMENT Suspect if Identify cause MANAGEMENT Prevent Auto-triggering VIDEO References and Links
Driving pressure
Driving pressure has been suggested by Amato and colleagues to be the key variable for optimisation when performing mechanical ventilation in patients with acute respiratory distress syndrome (ARDS)
Difficulty weaning from mechanical ventilation
Difficulty weaning is an important ICU challenge. 20% to 30% of patients are difficult to wean from invasive mechanical ventilation
Indices that predict difficulty weaning
Numerous objective indices have been studied to predict failure of ventilator liberation or weaning. None of these indexes alone are sufficiently sensitive and specific to be useful in predicting the success of ventilation discontinuation in an individual patient.
Spontaneous Breathing Trial
Spontaneous breathing trials (SBT) are used to identify patients who are likely to fail liberation from mechanical ventilation
PaO2/FiO2 Ratio (P/F Ratio)
PaO2/FiO2 ratio is the ratio of arterial oxygen partial pressure (PaO2 in mmHg) to fractional inspired oxygen (FiO2 expressed as a fraction, not a percentage)
Non-Invasive Ventilation (NIV)
Non-invasive ventilation (NIV) is the application of respiratory support via a sealed face-mask, nasal mask, mouthpiece, full face visor or helmet without the need for intubation