MECHANICAL VENTILATORY SUPPORT

. INDICATION FOR MECHANICAL VENTILATION acute hypercapnia minute ventilation > 10 L/min ratio of respiratory rate to tidal volume ≥ 100 vital capacity < 10-15 ml/kg maximal inspiratory pressure more positive than -20 cmH2O dead space to tidal volume fraction ≥ 0.60 acute hypoxemia clinical instability need for hyperventilation therapy 2. CLASSIFICATION OF VENTILATOR THERAPY 1) Non-Invasive ventilation (1) Positive pressure ventilation with facial mask CPAP, BiPAP (2) Negative pressure ventilation with chest shell, pneumowrap etc.. 2) Invasive ventilation positive pressure ventilation with endotracheal tube. 3. MODE OF VENTILATION 1) CMV, ACMV (Assist Control Mode Ventilation) 2) SIMV (Synchronized intermittent mandatory ventilation) 3) CPAP (Continuous positive airway pressure) 4) PCV (Pressure Control ventilation) 5) PSV (Pressure Support Ventilation) 6) PAV (proportional Assist Ventilation) A. ACMV patient/time triggered, volume cycled, pressure limited. …
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