Design requirements Emergency solution Ventialtion Corona patients

Using the MoSCoW method, the OperationAIR team has drawn up the Program of Requirements for the emergency solution for the rescue of corona patients.

Design requirements for ventilation of corona patients

Requirements - Ventilation Settings

Must Should Could Wont
- Adjustable settings:
+ Freq. 30/min
+ Tv 300 - 700 mL\[1]
+ Pplat < 35 cmH2O
+ Pressure controlled
+ 15cm H2O PEEP\[2]
+ FiO2 → 100%
+ I:E → 1:2
+ inspiratory flow 1.5L/s
- Error margin ≤ 0.5 cm H20 		- freq 35/min
- Tv 300 - 1000 mL
- inspiratory flow 2.5L/s
- 18-22cm H2O PEEP
- I:E → 1:1 - 1:4 		- Freq. 5 - 30/min
- 200-1500
- 25cm H2O PEEP 		- Weaning
- Passive/active ventilation switch (too advanced)
- Measure Pdriving (too advanced)
- Design disposables

Design Requirements for the design of OperationAIR

Requirements - Hardware

Must Should Could Wont
- HME-filter
- Flow Sensor
- Monitor
- Pressure relief (!!) (45cm H20)
- Infection control/sterilization
- expirated air
- UPS 		- Capnogram

Requirements - Software

Must Should Could Wont
- Visualisation (V, P and flow) curves+values
- Alarming (when, how and adjustability)
- Low/high airway pressure (Paw)
- Low expiratory minute volume(MVe)
- Inspiratory O2 concentration (FiO2)
- Expiratory CO2 concentration (etCO2)
- Teugvolume restrictie 		- High expiratory minute volume(MVe)
- Capnogram visualisation 		- trends (4, 12 & 24 hours)

Requirements - Reliability

Must Should Could Wont
- Reliability: Min. 2 week continuity
- Electrical safety
- Compatibility (disposables)
- Oxygen safety (flamable)

Referenties

  1. Walkey AJ, Goligher EC, Del sorbo L, et al. Low Tidal Volume versus Non-Volume-Limited Strategies for Patients with Acute Respiratory Distress Syndrome. A Systematic Review and Meta-Analysis. Ann Am Thorac Soc. 2017;14(Supplement_4):S271-S279.
  2. Walkey AJ, Del sorbo L, Hodgson CL, et al. Higher PEEP versus Lower PEEP Strategies for Patients with Acute Respiratory Distress Syndrome. A Systematic Review and Meta-Analysis. Ann Am Thorac Soc. 2017;14(Supplement_4):S297-S303.
  3. Dräger Evita® Infinity® V500 Ventilator ICU Ventilation And Respiratory Monitoring. (2020). [ebook] Drager, pp.1-8. Available at: www.draeger.com/ [Accessed 17 March 2020].