Page 99 - Clinical Application of Mechanical Ventilation

Classification of Mechanical Ventilators 65

- Respir Care, 37(9). Used with permission. From R. L. Chatburn (1992), "Technical description and classification of modes of ventilator operation,"
Action Machine- to-patient triggered Machine- to-patient triggered Sponta - neous to- mandatory breath Pressure- to-volume control —

Conditional Variable Time or patient effort Time or patient effort Minute ventilation, time Tidal volume —

Control Logic Supported No No Yes Yes Yes No

Cycle Pressure Pressure Volume Pressure or volume Flow Pressure

Limit Pressure Pressure Pressure Pressure Pressure Pressure

Spontaneous Breath Trigger Control Pressure, Pressure volume, or flow Pressure Pressure, Pressure volume, or flow Pressure, Pressure volume, or flow Pressure, Pressure volume, or flow Pressure Pressure or flow Pressure Pressure CMV = continuous mandatory ventilation; NA = not applicable; A/C = assist/control; AMV = assisted mechanical ventilation; IMV = intermittent mandatory ventilation; SIMV = synchronized mandatory ventilation; CPAP = continuous positive airway pressur

—
Cycle Time Time Time Time, volume, or flow Time or volume Time minute ventilation; VAPS = volume-assisted pressure support; BiPAP = bilevel positive airway pressure.

Limit Pressure Pressure Pressure — Volume or flow Flow Pressure

Mandatory Breath Trigger Control Time, Pressure pressure, volume, or flow Time Pressure Time or Pressure pressure — — Time Volume or flow Time or Flow pressure Time Pressure (continued)

Mode PC-SIMV PCIRV APRV PSV MMV VAPS BiPAP Figure 3-12

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