Restrictor Calculator for Multi-Patient Ventilation

How do I use this page?

BathRC-web v1.2 © University of Bath 2020; based on this paper and this dataset
More information on differential multiventilation (the method this tool supports) at differentialmultivent.org
Ventilation circuit parameters Info
cmH2O/(L/s)

L/cmH2O
Patient 1 Info

cmH2O/(L/s)

cmH2O/(L/s)

L/cmH2O

L

cmH2O
Patient 2 Info

cmH2O/(L/s)

cmH2O/(L/s)

L/cmH2O

L

cmH2O
Ventilator Settings and Restrictor Requirements Info
0102030405060708090100010203040506015202530354011.21.41.61.822.22.4
Patient 1Patient 2Fig 1 Inspiration restrictors, cmH20/(L/s)Peak ventilator pressure (Pinsp + PEEP), cmH20Inspiration time, s

Fig 1 x-axis:
cmH2O

Fig 1 y-axis:
seconds
01020304001020203040506070809010011002468101.522.533.544.55
Patient 1Patient 2Fig 2 Expiration restrictors, cmH20/(L/s)Ventilator PEEP setting, cmH20Expiration time, s

Fig 2 x-axis:
cmH2O

Fig 2 y-axis:
seconds

Inspiration restrictor requirements

cmH2O/(L/s)

cmH2O/(L/s)

Expiration restrictor requirements

cmH2O/(L/s)

cmH2O/(L/s)
Where do the restrictors go?
Ventilation response
051015102030
pat. 1pat. 2ventilatortime, spressure, cmH2O
05101500.5
time, sflow, L/s
0510150.40.60.8
time, svolume, L
Summary Info
I. Patient tidal volume / lung end expiration pressure requirements
Patient 1: Tidal volume = 0.50 L, Individual lung end expiration pressure = 5.0 cmH2O
Patient 2: Tidal volume = 0.50 L, Individual lung end expiration pressure = 10.0 cmH2O

II. Ventilator settings
Respiration rate = 13.3 bpm
I:E ratio = 0.50
Pinsp = 26.3 cmH2O
PEEP = 3.5 cmH2O

III. Restrictor resistances
Patient 1 inspiration tube restrictor resistance: 28.69 cmH2O/(L/s)
Patient 1 expiration tube restrictor resistance: 0.00 cmH2O/(L/s)
Patient 2 inspiration tube restrictor resistance: 0.00 cmH2O/(L/s)
Patient 2 expiration tube restrictor resistance: 45.05 cmH2O/(L/s)