Special Ventilation Modes

Special Ventilation Modes


Maximum Support for Resuscitation and Induction of Anesthetic 

Special Modes for Particular Applications

Cardiopulmonary resuscitation and induction of anesthetic pose particular challenges in a pre-hospital setting. The CPR, RSI, and CCSV modes offer specific support to the user as they perform the individual treatment steps. The devices make the procedure easier for the user because the right function is always available at the right time. The patient can be treated quickly and efficiently as a result.

WEINMANN doesn’t just provide solutions for emergency situations. We also offer special devices for controlled continuous ventilation. In the PRVC + ASB hybrid mode, volume control ventilation is combined with pressure control ventilation to prevent harmful peak pressures even when you have specified the tidal volume.

WEINMANN ventilators feature the following special ventilation modes:

  • CPR (Cardiopulmonary Resuscitation): The CPR mode in the MEDUMAT Standard² and MEDUMAT EasyCPR makes it easier for the user to perform cardiopulmonary resuscitation. For the optimum patient outcome, use the CPR mode in combination with the CCSV ventilation mode for resuscitation.

  • RSI (Rapid Sequence Induction): The RSI mode in the MEDUMAT Standard² is precisely tailored to the requirements of emergency anesthesia and intubation.

  • CCSV (Chest Compression Synchronized Ventilation): Used for resuscitation, the CCSV mode improves gas exchange and hemodynamics using an innovative method. The CCSV mode is available as an option for the MEDUMAT Standard² and is used in combination with the CPR mode.

  • PRVC + ASB / + PS (Pressure-Regulated Volume-Controlled Ventilation + Assisted Spontaneous Breathing / Pressure Support): The best in volume and pressure-controlled ventilation – volume-controlled ventilation with pressure control to prevent peak pressures.

  • Manual mode: Optimized for cardiopulmonary resuscitation, manual mode is a substitute for the bag-valve mask and can likewise be used for anesthesia induction or manual ventilation with MEDUVENT Standard.

Special Ventilation Modes CPR

CPR: Cardiopulmonary Resuscitation

The Mode for Resuscitation

In the CPR mode, you can activate mechanical breaths manually by pressing the button directly on the ventilation mask. This function is unique and is exclusively integrated in the WEINMANN MEDUMAT EasyCPR and MEDUMAT Standard² ventilators.

The mechanism for activating the mechanical breaths – the MEDUtrigger – is positioned directly on the mask. The user can conveniently operate the MEDUtrigger while sealing the mask using the two-handed C grip technique.

There are advantages to using mechanical ventilation in comparison to ventilation with a bag-valve mask, even during manual ventilation: Pressure limitation, fixed tidal volume, and alarms make ventilation safer for the patient. You can then switch directly from manual ventilation to continuous ventilation as soon as the airway is secured.

Take a look at how resuscitation works with CPR mode here.

RSI: Rapid Sequence Induction

The Mode for Induction of Anesthetic

When it comes to emergency anesthesia and intubation, every treatment step needs to be executed perfectly. The RSI mode makes the right functions available to the user at the right time:

  • Pre-oxygenation: In Demand mode, the spontaneously breathing patient receives 100% oxygen through the mask.

  • Tube position monitoring: Mechanical breaths can be activated manually using the MEDUtrigger placed on the mask in order to check the tube position. If the capnography option is activated, it is also possible to check the CO2 level in the exhaled gas.

  • Switching to continuous ventilation: You can switch to continuous ventilation in a single movement once the airway has been secured.

Take a look at how induction of anesthetic works with RSI mode here.

Special ventilation mode RSI
Special Ventilation Mode CCSV

CCSV: Chest Compression Synchronized Ventilation

The Mode for Resuscitation Ventilation

Integrated in MEDUMAT Standard², the CCSV ventilation mode administers a pressure-controlled mechanical breath in sync with each chest compression: The perfect accompaniment to CPR mode. Find out more about the advantages of CCSV.

PRVC + ASB / PRVC + PS: Pressure Regulated Volume Controlled Ventilation + Assisted Spontaneous Breathing 

Pressure-Regulated Volume-Controlled Ventilation + Pressure Support

Continuous Positive Airway Pressure with Pressure Support (invasive ventilation)

The controlled-assisted PRVC + ASB ventilation mode combines the advantages of both pressure control ventilation and volume control ventilation. The set tidal volume is applied with the minimum ventilation pressure possible.

Ventilation begins with three volume-controlled breaths with the set tidal volume. The device selects the measured plateau pressure as the starting value for the inspiratory pressure pInsp of the following pressure control ventilation. It measures the administered volumes and adjusts the ventilation pressure accordingly.

Ventilation starts with three mechanical breaths to determine pressure on inspiration pInsp for subsequent pressure-controlled ventilation. The ventilator measures the volumes administered and automatically adapts ventilation pressure as required. 

Measuring the applied volume is improved by compensating hose compliance. This enables precise control of the required tidal volume, in particular of small tidal volumes under high airway pressures. The set maximum pressure limit (pMax) ensures the safety of the patient. For safety reasons, the inspiratory pressure pInsp is 5 mbar below the set maximum pressure limit (pMax).

If this inspiratory pressure (pInsp = pMax - 5 mbar) is achieved, the device administers as much volume as possible. If this volume deviates from the set tidal volume, the device triggers the medium-priority alarm “Vt not achievable”.

The following ventilation parameters can be set:

Vt: Tidal volume (breathing volume) in ml

Freq.: Ventilation rate in 1/min

PEEP: Positive end-expiratory pressure in mbar

pMax: Maximum inspiratory pressure in mbar

Δ pASB: Pressure support (relative to the set PEEP)

InTr: Inspiratory trigger

ExTr: Expiratory trigger

I:E: Inspiratory-expiratory time ratio

PRVC + ASB is included with MEDUMAT Transport and is an optional extra for MEDUMAT Standard².

PRCV + PS is available for MEDUVENT Standard as an option.

Special Ventilation mode PRVC ASB