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

Gaseous pathways in atelectatic ears.

J Sadé1, M Luntz

  • 1Department of Otolaryngology, Meir Hospital, Kfar Saba, Israel.

The Annals of Otology, Rhinology, and Laryngology
|May 1, 1989
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

Skull base meningiomas mimicking otitis media.

The Journal of laryngology and otology·2012
Same author

Aspirin desensitization for ASA triad patients--prospective study of the rhinologist`s perspective.

Rhinology·2011
Same author

Cochlear implant soft failures consensus development conference statement.

Cochlear implants international·2008
Same author

Abnormal anatomy and airway management.

European journal of anaesthesiology·2008
Same author

Width of the extended facial recess: a numerical study of ultrahigh-resolution computed tomography and its implications in minimally invasive otologic surgery.

Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology·2005
Same author

Cochlear implant soft failures consensus development conference statement.

Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology·2005
Same journal

Laryngeal Injuries Following General Endotracheal Anesthesia: A Case Series.

The Annals of otology, rhinology, and laryngology·2026
Same journal

Clinical and Voice Outcome Differences in Vocal Cord Cysts with and Without Sulcus Vocalis: Insights From a Tertiary Center in Saudi Arabia.

The Annals of otology, rhinology, and laryngology·2026
Same journal

Bioabsorbable Stenting in a Case of Severe Pediatric Posterior Glottic Stenosis.

The Annals of otology, rhinology, and laryngology·2026
Same journal

Efficacy and Safety of Finafloxacin Otic Suspension, 0.3% for the Treatment of Acute Otitis Externa: Results from two Phase III Randomized Clinical Studies.

The Annals of otology, rhinology, and laryngology·2026
Same journal

Evaluation Of the Expression Levels Of SerpinB3/B4/B10, Interleukin-17 As Biomarkers For Chronic Rhinosinusitis With Nasal Polyps.

The Annals of otology, rhinology, and laryngology·2026
Same journal

Correlation of Patient-Reported Symptoms With Rhinogram Features Beyond Simple Airway Resistance.

The Annals of otology, rhinology, and laryngology·2026
See all related articles

Atelectatic ears treated with gases like CO2 and O2 temporarily resolved, reappearing slowly via diffusion. This study reveals air enters and leaves the middle ear through the Eustachian tube or bloodstream, impacting atelectasis.

Area of Science:

  • Otolaryngology
  • Physiology
  • Biophysics

Background:

  • Atelectasis, characterized by middle ear negative pressure, affects Eustachian tube function.
  • The mechanisms of gas exchange and pressure regulation in the middle ear are not fully understood.

Purpose of the Study:

  • To investigate the routes of gas entry and exit in atelectatic middle ears.
  • To explore the role of diffusion and active transport in middle ear gas dynamics.

Main Methods:

  • Politzerization of thirteen atelectatic ears using CO2, O2, air, and N2.
  • Observation of atelectasis resolution and reappearance rates.
  • Assessment of tympanic membrane mobility and active air introduction by patients.

Main Results:

Related Experiment Videos

  • Politzerization temporarily resolved atelectasis, with slow reappearance correlating to gas diffusion coefficients.
  • Patients demonstrated active middle ear air entry and exit via sniffing or swallowing.
  • Evidence suggests dual routes for gas exchange: the Eustachian tube (bolus flow) and bloodstream (diffusion).

Conclusions:

  • Middle ear gas dynamics in atelectatic ears involve both the Eustachian tube and systemic circulation.
  • Negative pressure in atelectatic ears may result from an imbalance in gas gain and loss through these dual routes.
  • Understanding these mechanisms is crucial for managing atelectatic conditions.