Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Ear drops and grommets.

R P Mills1, C Albizzati, A S Todd

  • 1Department of Otolaryngology and Haematology, University of Dundee, Ninewells Hospital, UK.

Clinical Otolaryngology and Allied Sciences
|August 1, 1990
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

The neglected epidemic of trauma from interpersonal violence against the elderly in South Africa.

South African journal of surgery. Suid-Afrikaanse tydskrif vir chirurgie·2022
Same author

Appendicectomy in private practice in KwaZulu-Natal Province, South Africa.

South African medical journal = Suid-Afrikaanse tydskrif vir geneeskunde·2018
Same author

Factors affecting hearing improvement following successful repair of the tympanic membrane.

The Journal of laryngology and otology·2013
Same author

Resolution of nidek 3-dx, zeiss, canon, and topcon fundus cameras.

Journal of glaucoma·2009
Same author

The assessment of hearing test results following surgery for otitis media with effusion in adults using the Glasgow Benefit Plot: how we do it.

Clinical otolaryngology : official journal of ENT-UK ; official journal of Netherlands Society for Oto-Rhino-Laryngology & Cervico-Facial Surgery·2009
Same author

Myringoplasty: does the size of the perforation matter?

Clinical otolaryngology and allied sciences·2002
Same journal

Correspondence.

Clinical otolaryngology and allied sciences·2017
Same journal

Erratum.

Clinical otolaryngology and allied sciences·2013
Same journal

Compact training course in ear surgery erlangen, Germany, 26-28 february 1998.

Clinical otolaryngology and allied sciences·2013
Same journal

How we do it: a practical approach to Foley catheter posterior nasal packing.

Clinical otolaryngology and allied sciences·2004
Same journal

How we do it: management of tracheobronchial foreign bodies in children.

Clinical otolaryngology and allied sciences·2004
Same journal

Is cochlear outer hair cell function affected by mobile telephone radiation?

Clinical otolaryngology and allied sciences·2004
See all related articles

Ear drops penetrate ventilation tubes differently based on grommet size and surface wetting properties, not viscosity. The displacement technique is crucial for middle ear delivery, especially when grommets are clear of discharge.

Area of Science:

  • Otolaryngology
  • Biomedical Engineering
  • Pharmaceutics

Background:

  • Ventilation tubes (grommets) are used to treat middle ear conditions.
  • Effective delivery of ear drops through grommets is essential for treatment success.
  • Factors influencing ear drop passage through grommets require investigation.

Purpose of the Study:

  • To evaluate the ease of passage of different ear drops through various grommet designs.
  • To determine the relationship between ear drop properties (viscosity, wetting) and penetration.
  • To assess in vivo ear drop penetration during aural discharge using different techniques.

Main Methods:

  • Laboratory model simulating grommet passage with various ear drop preparations.
  • Determination of ear drop viscosities.

Related Experiment Videos

  • In vivo study of ear drop penetration during aural discharge using the displacement technique.

    • Main Results:

    • Significant variation exists in the volume of ear drops needed for grommet penetration.
    • Ease of passage is primarily influenced by grommet size and the preparation's wetting ability.
    • No correlation was found between ear drop viscosity and ease of penetration.
    • In vivo, middle ear penetration was only achieved with the displacement technique.
    • Penetration was more successful when the grommet lumen was free from discharge.

    Conclusions:

    • Grommet size and surface wetting characteristics are key determinants of ear drop penetration.
    • Viscosity does not predict the ease with which ear drops pass through ventilation tubes.
    • The displacement technique is superior for delivering ear drops through grommets, particularly in non-discharging ears.