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

p…(생략)

B. SIMV

C. CPAP