VentSim
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Paid Version
Publisher Description
VentSim
Is for anyone involved in the care of mechanically ventilated patients - Intensivists, Anaesthetists & ICU Nurses.
Explore the physiology of the ventilated lung
VentSim is a fully functioning, high fidelity, physiologically faithful mechanical ventilator simulator. It was developed by Dr. Roger Stedman for iOS using the Swift programming language. Its purpose is an educational tool for critical care doctors, nurses, therapists, and anaesthetists – essentially anyone that has an interest in the provision of safe, effective care of the mechanically ventilated patient.
VentSim uses a mathematical model of the human respiratory system (volumes, resistance and compliance) which are well established models published in the literature [link]. These have been codified with an interface developed which allows you to manipulate parameters to simulate different patient scenarios (everything from a neonate through to an adult with severe COPD and emphysema).
VentSim allows you to apply ventilator settings to your respiratory system model and then generates pressure, volume and flow signals that are displayed on your iOS device.
Using VentSim
On launch VentSim takes you straight into the simulator view – this is your central navigation point for the app.
Set up your simulated patient
Tap the ‘Patient’ button on the right side of the navigator bar. This brings up the ‘Patient Settings’ view:
The controls will slide in from the right, allowing you to still see some of the simulator view as you make adjustments.
Select your type of patient - and then adjust weight and relative lung volume size. You will see calculated lung volumes.
Select linear or dynamic compliance
If linear is selected adjust the ‘Compliance Slider’ (mls/cmH2O).
Alternatively - explore the dynamic compliance model and try different compliance models.
Adjust the Time constant, this will adjust airway resistance according to the size and compliance of your patient.
Return to the simulator view by tapping the right arrow in the navigator bar.
Adjust your ventilator settings
Select the ‘Ventilator’ button to the left of the navigator bar. This brings up the ‘Ventilator Settings’ view:
Select your ventilator rate (bpm) and I:E ratio using the sliders. You have a choice of three ventilator modes; Pressure Control, Volume Control and Flow Control. You are able to adjust appropriate input values for each of these (Inspiratory pressure, tidal volume or inspiratory flow) as well as apply PEEP and in volume control mode add an end inspiratory pause.
Return to the simulator view to view the impact your settings have had on your patients respiratory parameters.
Optimise the simulator view
If you are finding that due to screen size information is hidden (as is the case with the iPhone SE) try turning your device on its side into landscape mode.
The simulator view in landscape mode on an iPhone SE
Each simulator graph view has a gear icon in the top right hand corner, tap this to bring up the view settings panel. This allows you to change the background color, plot color, speed of animation, animation type (default is the wrap fade mode) and plot style (line or solid).
Graph Plot View settings popover
You will notice that as you change your settings the graph plots will automatically re-scale to an optimum screen fit. The axis labels will adjust accordingly. The panel data is updated at the end of each respiratory cycle.
Other Features
The ‘i’ (information) button on the navigator bar opens a mini-browser which navigates automatically to this page.
The down pointing chevron button on the navigator opens a menu with which to access other features of the simulator which allows you to switch on and off each individual view and also add in the spirometer loop view and also the compliance view.
Have fun!
Please feedback to:
ventsim@rogerstedman.com
ventsim@rogerstedman.com
About VentSim
VentSim is a paid app for iOS published in the Health & Nutrition list of apps, part of Home & Hobby.
The company that develops VentSim is Roger Stedman. The latest version released by its developer is 1.0.
To install VentSim on your iOS device, just click the green Continue To App button above to start the installation process. The app is listed on our website since 2024-04-27 and was downloaded 1 times. We have already checked if the download link is safe, however for your own protection we recommend that you scan the downloaded app with your antivirus. Your antivirus may detect the VentSim as malware if the download link is broken.
How to install VentSim on your iOS device:
- Click on the Continue To App button on our website. This will redirect you to the App Store.
- Once the VentSim is shown in the iTunes listing of your iOS device, you can start its download and installation. Tap on the GET button to the right of the app to start downloading it.
- If you are not logged-in the iOS appstore app, you'll be prompted for your your Apple ID and/or password.
- After VentSim is downloaded, you'll see an INSTALL button to the right. Tap on it to start the actual installation of the iOS app.
- Once installation is finished you can tap on the OPEN button to start it. Its icon will also be added to your device home screen.
