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International Journal of Bioprinting Customized 3D nasal masks for ELBW infants

Figure 4. Changes of the inspired fraction of oxygen (FiO ) when the customized nasal mask (M3D) and the traditional mask (TM) were utilized on the
2
premature infant in incubator and in kangaroo position.

3. Results
The fraction of inspired oxygen (FiO ) was lowered from
2
45%, which was the requirement when TM is used, to almost
21% when M3D was applied to the premature infant, who
was either in incubator or in kangaroo position (Figure 4). A
decrease in mean pressure was also observed when the M3D
was applied, indicates a better seal. Given the stability of the
respiratory parameters, the nursing routinely decreased the
peak inspiratory pressure level and positive end expiratory
pressure on the NIV device and automatically adjusted the
mean airway pressure level. The preterm infant did not Figure 5. The patient with the transient red marks after the customized
manifest desaturations or bradycardias. When the M3D nasal mask was removed.
was removed, slight marks (Figure 5) were evident on the
skin at the contact points in the nasal root. The appearance 4. Discussion
of mild perinasal red marks on the skin could be observed Elastic 50 resin from FormLabs is a softer engineering
100 minutes after the placement of M3D, but they subsided resin suitable for the manufacture of devices. It is
in the following hours and resolved at 24 hours. normally made of silicone and has a Shore A 50 hardness.

V 74 https://doi.org/10.18063/ijb.v9i1.627
Volume 9 Issue 1 (2023)olume 9 Issue 1 (2023)