A/CV is the default mode that appears upon startup of the O-Two e700 ventilator. It offers the widest range of settings and can operate in two ventilation types:
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Volume-Controlled Ventilation (VCV)
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Pressure-Controlled Ventilation (PCV)
🔄 How It Works:
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The ventilator delivers mandatory breaths at a preset rate.
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Patient effort is not required to initiate breaths (but can trigger them if enabled).
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If the trigger is disabled, breaths will be delivered purely based on time.
🔧 Default Trigger Sensitivity:
3 L/min (adjustable from 1 to 15 L/min)
📋 Main Settings in A/CV Mode:
| Setting | Description |
|---|---|
| VT (Tidal Volume) | Sets the volume of air delivered per breath (used in VCV only) |
| Rate | Number of breaths per minute |
| MV (Minute Volume) | Total air delivered per minute (VT × Rate) |
| I:E Ratio | Ratio of inspiration to expiration time |
| TI (Inspiratory Time) | Duration of the inspiratory phase |
| PEEP | Pressure maintained at the end of exhalation |
| O₂% | Fraction of inspired oxygen (choice between 60% and 100%) |
| MV Max/Min | Alarm limits for high and low minute volume |
| P Max/Min | Alarm limits for high and low airway pressure |
🔁 Switching Between Volume and Pressure Control:
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Volume Mode (default):
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You set the tidal volume (VT).
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The ventilator delivers the exact set volume with each breath.
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Pressure Control Ventilation (PCV):
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Activated by selecting PCV Pressure.
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VT setting is disabled.
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The ventilator delivers air until the set pressure is reached, maintained for the preset inspiratory time.
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Useful when the patient is completely unable to breathe.
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Cycle is time-triggered and pressure-limited.
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💡 Summary:
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A/CV mode is ideal for patients who cannot breathe adequately or at all.
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Can be tailored for either precise volume delivery or pressure-targeted support.
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It provides full control over respiratory support, while allowing optional patient triggering.
