Neurally adjusted ventilatory assist (NAVA) is a new mode of mechanical ventilation controlled by diaphragmatic electrical signals.
However, as earlier demonstrated, the total time receiving mechanical ventilation (controlled ventilation and pressure support) was increased by the use of sedation.
Mechanical ventilation (controlled mandatory ventilation mode) was set, 30 min before tracheotomy was performed, with various types of ventilator (Evita II-Drager, Servo Ventilator 900C-Siemens, Erica-Engstrom) during the procedure.
This allowed for a comparison of controlled mechanical ventilation, assist control, pressure support, and continuous positive pressure modes.
AMV, Assist-control mechanical ventilation; CMV, Controlled mechanical ventilation (numerical value of 8 next to ventilatory mode denotes the set CPAP or PEEP of 8 CPAPO); Continuousinuous positive airway pressure; MyHC, Myosin heavy chain.
AMV, Assist-control mechanical ventilation; CMV, Controlled mechanical ventilation (numerical value of 8 next to ventilatory mode denotes the set CPAP or PEEP of 8 CPAPO); Continuousinuous positive airway pressure; MyHC, Myosin heavy chain; PEEP, Positive end-expiratory pressure.
AMV, Assist-control mechanical ventilation; CMV, Controlled mechanical ventilation (numerical value of 8 next to the ventilatory mode denotes the set CPAP or PEEP of 8 CPAPO); Continuousinuous positive airway pressure; N/A, Not applicable; PEEP, Positive end-expiratory airway pressure; VT, Tidal volume.
Patients were under mechanical ventilation (assisted control ventilation mode) and adapted to the ventilator.
0h no mechanical ventilation time, control group; 12h 12 h of mechanical ventilation, LTV low tidal volumes, HTV high tidal volumes.
0h no mechanical ventilation time, control group; 8h 8 h of mechanical ventilation, 12h 12 h of mechanical ventilation, LTV low tidal volumes, HTV high tidal volumes.
One of the main reasons to justify the use of NMBs in ARDS is facilitation of mechanical ventilation and control of patient/ventilator asynchrony.
