2015
DOI: 10.4187/respcare.03813
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Computerized Dead-Space Volume Measurement of Face Masks Applied to Simulated Faces

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Cited by 7 publications
(4 citation statements)
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“…The degree of adaptability and flexibility of the mask are also important factors that influence the fit and mask‐to‐face seal as well as the physical dead space of the mask . When pressed against the face, the pressure causes compression of the mask, tightening the contact and reducing the actual mask dead space . Thus, drug delivery will be affected by the force applied by the caregiver as well as the flexibility, compressibility, and shape of the mask.…”
Section: Discussionmentioning
confidence: 99%
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“…The degree of adaptability and flexibility of the mask are also important factors that influence the fit and mask‐to‐face seal as well as the physical dead space of the mask . When pressed against the face, the pressure causes compression of the mask, tightening the contact and reducing the actual mask dead space . Thus, drug delivery will be affected by the force applied by the caregiver as well as the flexibility, compressibility, and shape of the mask.…”
Section: Discussionmentioning
confidence: 99%
“…32 When pressed against the face, the pressure causes compression of the mask, tightening the contact and reducing the actual mask dead space. 33,34 Thus, drug delivery will be affected by the force applied by the caregiver as well as the flexibility, compressibility, and shape of the mask. A good seal with a minimal leak around the nose, cheeks, and mouth will ensure inspiration through the VHC and not allow ingress of ambient air between the mask and face.…”
Section: Discussionmentioning
confidence: 99%
“…The overall design, volume, and degree of adaptability of the face mask are important factors that influence the fit and mask-toface seal as well as the physical dead space of the mask [32]. When pressed against the face, pressure causes compression of the mask, tightening the contact and reducing the actual dead space of the mask [42,43]. However, with increasing pressure against the face, children are more likely to cry which again decreases the inhaled dose [44][45][46].…”
Section: Effect Of the Respiratory Pattern On Drug Delivery Through Vhcsmentioning
confidence: 99%
“…Additionally, the extremely important question of mask dead space used in small children is not taken into account in regulatory conclusions. Recent studies have shown considerable differences in dead space with various masks [8]. Clearly, if the volume of the mask dead space is not taken into account and is significantly larger with one brand of mask or if greater pressure is required to achieve a seal [9], thus frightening the child, with even the best in vitro studies showing differences in aerosol delivery, the results may be clinically irrelevant!…”
mentioning
confidence: 99%