Data and Figure generating code for Figures 3 and 4 of the paper - "Breath-by-breath lung gas volume detection using GASMAS in a neonatal mannequin"

Figure 3. Water vapor absorption (H2O PC)  and Figure 4. Oxygen absorption (O2 PC)  across different respiratory phases, tidal volume and inspired fraction oxygen.

a and d - H2O PC (mean, SD) for a range of different tidal volumes (2-6 ml) (see legend) over time (breath phases) and FiO2 (0.21 – first row, 1.00 – second row). Each data point represents the average value of the four breath cycles.

b and e – Estimated marginal means for H2O PC for inspiration vs expiration and FiO2 (0.21 – first row, 1.00 – second row).

The respiratory rate was set to deliver 20 breaths per minute with the duration of inspiration phase of 2 seconds (shaded in green) and expiration – 1 second (shaded in red).

c and f – The difference (Δ) of H2O PC between the two breath phases (inspiration and expiration) at the two FiO2 values (legend) as a function of the tidal volume.

Abbreviations: PC – projected concentration; FiO2 – Fraction of inspired oxygen; H2O – water vapor; O2 – oxygen gas.