VentSim vs PHEM Logger

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

PHEM Logger is a precision timestamping tool for pre-hospital emergency medicine professionals. Designed for Enhanced Care Teams, Paramedic crews, and First responders, it captures accurate real-time timestamps for every key event during a patient job — supporting clinical governance, handover documentation, and post-incident audit. Built for glove-friendly, single-handed operation under pressure. Runs on iPhone, iPad and Apple Watch. JOB TIMINGS Timestamp every phase of a job — activation, mobile, on scene, at patient, leaving scene, and hospital arrival — with a live on-scene stopwatch. Time since call, scene time, patient contact time and total job time are calculated for you. DRUGS Log clinician-administered medications with automatic frequency counting across repeat administrations. Includes adrenaline (bolus and infusion), fentanyl, ketamine, rocuronium, TXA, morphine, and more. Record the exact time, choose a different time, or log without a time. INTERVENTIONS Record the precise time of clinical interventions including airway management, PHEA, blood products, IV and arterial access, ultrasound, and fracture management. CARDIAC ARREST Timestamp shocks, rhythm changes, ROSC, mechanical CPR, cardiac arrest drugs and termination of resuscitation. Recording initial events such as time of arrest, bystander CPR, bystander AED. With recordings of cardiac rhythms including ROSC, automatic calculation of total no flow time, total low flow time and total down time. NEWS2 Record respiration rate, oxygen saturations, blood pressure, pulse, temperature and level of consciousness as part of a vital signs snapshot, and the NEWS2 score is calculated from your entries — colour-coded and included in every export. A Scale 2 option is available for patients at risk of hypercapnic respiratory failure. A score is shown only when all seven parameters are present; anything missing is named instead. DASHBOARD A single glance shows your current job status, on-scene time, and recent events. App stays open, preventing sleep mode with customisable setting. MAKE NOTES & BUILD ATMIST HANDOVER RECORD Notes can fit your preferred structure which can then be directly mapped to the ATMIST handover notes. Record key vital signs snapshots for ATMIST handover. Fully exportable: End of handover or from job lists export to a plain text preview which can be easily read at handover JOB LIST Every completed job shows how it ended — hospital handover, stand down, or patient life extinct — colour-coded to show whether the patient was reached. Filter the list by outcome, select any number of jobs, and export or delete them together. Most recent first. CUSTOMISABLE Edit numerous setting: Display appearance, On scene audible alert timing, Confirmation alerts, Headings & Timings required for notes page, ATMIST sections mapped to Notes, printer selection. JOB REPORT & SHARE FUNCTION During and end of job timings report viewable with share function into Notes or messaging apps. Export as plain text, as a spreadsheet, or as a combined archive covering several jobs at once. Compatibility with Bixolon SPP-R310 and Zebra ZQ220 Plus thermal printers for handover to other clinical teams. Save the printers your service uses and run a start-of-shift check to confirm paper, battery and connection. BUILT-IN GUIDE Sixteen sections covering every screen and setting, including guidance on data governance and what should not be recorded. SIMULATION READY PHEM Logger works equally well during manikin-based simulation exercises and training scenarios, making it a valuable tool for team debriefs and skills development. IMPORTANT: All entries in PHEM Logger are clinician-initiated. The app records what you enter and displays standard figures calculated from those entries, such as NEWS2 and no-flow / low-flow times. It does not provide clinical guidance or recommendations, and every figure it derives remains subject to your own clinical assessment.