Dräger Cato Operating Manual

I) Anesthetic Workstation Cato:

It is a universally applicable anesthetic workstation for:

• -Inhalation anesthetic in semi-closed systems
• -Inhalation anesthetic in virtually closed systems with 'low flow' and 'minimal flow' techniques for minimum gas and anesthetic consumption with:

1. Automatic ventilation (IPPV)
2. Synchronized intermittent mandatory ventilation (SIMV)
3. Manual ventilation (MAN)
4. Spontaneous breathing (SPONT)

II) Measurement and Monitoring Functions:

The available functions are:

• -Measurement of ventilation parameters (pressure, flow, O2 concentration inspiratory and expiratory).
• -Continuous measurement of CO2 concentration and N2O/anesthetic concentration (halothane, enflurane, isoflurane, sevoflurane, desflurane). The flow rate for sampling the measuring gas can be varied and is returned to the circulation.
• -Automatic adjustment of the alarm limits for automatic ventilation (IPPV).
• -Anesthetic vaporizer with automatic vapor recognition.
• -Optional:
• Continuous non-invasive measurement of functional O2 saturation.
• Measurement of inspiratory breathing gas temperature.

III) Indicated Values:

The indicated values are:

• -Continuous curve for airway pressure, peak and plateau pressure, mean pressure and PEEP 1 .
• -Patient compliance.
• -Expiratory minute volume, tidal volume and respiration rate.
• -Expiratory flow curve.
• -Inspiratory and expiratory O2 concentration.
• -Inspiratory and expiratory concentration of N2O and anesthetic halothane, enflurane, isoflurane, sevoflurane, and desflurane.
• -Inspiratory and end-expiratory CO2 concentration.
• -Continuous CO2 curve.
• -List entries and trend displays.

1 PEEP: Positive End-Expiratory Pressure

• -Optional:
• Functional O2 saturation, pulse rate, and plethysmogram.
• Inspiratory breathing gas temperature.

IV) Monitored Parameters:

The monitored parameters include:

• -Airway pressure.
• -Expiratory minute volume.
• -Inspiratory O2 concentration.
• -Inspiratory and expiratory CO2 concentration.
• -Inspiratory anesthetic concentration.
• -Optional:
• Functional O2 saturation and pulse.
• Inspiratory breathing gas temperature with invariable upper alarm limit.
• V) Keys:
• A) Setting operating modes:

Left-hand side:

for manual ventilation Or spontaneous breathing Key

for IPPV mode Key

Right-hand side:

for leakage test and compliance measurment Key

for SIMV mode Key

Standby Key

• B) Setting ventilation parameters:

Located below the display window:

for setting maximum pressure for IPPV and SLMV ventilation (in mbar) Key for setting tidal volume (in mL or L) Key

for setting ventilation frequency in IPPV mode (in breaths/min) Key for setting timne ratio between inspiration and expiration Key

for setting realtive inspiratory pause Key

Key for setting PEEP pressure for IPPV mode

for setting ventilation frequency in SIMV mode Key

VI) Structure of Display Screen:

**Table Caption: This