In Vitro Assessment of Spray Deposition Patterns in a Pediatric (12 Year-Old) Nasal Cavity Model

Research Paper
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Abstract

Purpose

Nasal sprays available for the treatment of cold and allergy symptoms currently use identical formulations and devices for adults as well as for children. Due to the obvious differences between the nasal airway dimensions of a child and those of an adult, the performance of nasal sprays in children was evaluated.

Methods

Deposition patterns of nasal sprays administered to children were tested using a nasal cast based on MRI images obtained from a 12 year old child’s nasal cavity. Test formulations emitting a range of spray patterns were investigated by actuating the device into the pediatric nasal cast under controlled conditions.

Results

The results showed that the nasal sprays impacted in the anterior region of the 12 year old child’s nasal cavity, and only limited spray entered the turbinate region – the effect site for most topical drugs and the primary absorptive region for systemically absorbed drugs.

Conclusion

Differences in deposition patterns following the administration of nasal sprays to adults and children may lead to differences in efficacy between these populations. Greater anterior deposition in children may result in decreased effectiveness, greater anterior dosage form loss, and the increased potential for patient non-compliance.

Key Words

anterior deposition nasal cast nasal spray pediatrics plume angle 

Notes

ACKNOWLEDGMENTS AND DISCLOSURES

This study was funded by an FDA Grant to the National Institute for Pharmaceutical Technology and Education (NIPTE) titled "The Critical Path Manufacturing Sector Research Initiative (U01)"; Grant# 5U01FD004275.

The results and conclusions presented reflect the opinions of the authors and not those of the funding agencies.

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© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Division of Pharmaceutics and Translational Therapeutics, College of PharmacyUniversity of IowaIowaUSA

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