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RecruitingNCT06160505Updated Dec 7, 2023

Mastoid Obliteration Using S53P4 Bioactive Glass Versus Mastoidectomy Alone for Chronic Suppurative Otitis Media

An observational study in Chronic Suppurative Otitis Media, sponsored by Diakonessenhuis, Utrecht. Recruiting at 1 site in Netherlands. Per ClinicalTrials.gov, last updated 2023-12-07.

Sponsored by Diakonessenhuis, Utrecht · Observational

From the registry’s dates

  • Primary completion was expected by Apr 2024, 2 years 7 months ago, but the record still lists the study as recruiting.
  • Started Oct 2023; still recruiting 3 years 1 month later.
Study type
Observational
Model
Cohort
Time perspective
Retrospective
Enrollment
250
Sex
All
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Study summary

Chronic suppurative otitis media (CSOM) is characterized by intermittent or continuous otorrhea lasting for longer than 6 weeks. Most cases can be treated conservatively using antibiotic drops and oral antibiotics. However, some cases will not respond to conservative treatment and demonstrate persistant discharge. In these cases, especially if a CT-scan shows opacification of the mastoid air cells, a mastoidectomy can be considered as treatment modality. In recent years, obliteration of the mastoid cavity following mastoidectomy is gaining popularity. However, the effectiveness of obliterating the mastoid in comparison to mastoidectomy alone is uncertain for CSOM. In this retrospective cohort study, our aim is to compare mastoidectomy to mastoidectomy + mastoid obliteration in a cohort of patients suffering from CSOM with mastoid involvement. The hypothesis is that obliterating the mastoid cavity will result in a higher frequency of dry ears and in a lower frequency of revision surgeries.

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Conditions studied

  • Chronic Suppurative Otitis Media

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03

In context

Otitis Media

241 studies on the registry are indexed under Otitis Media; 32 are open to participants now.

This study's planned enrollment of 250 is above the median of 150 across 57 observational studies indexed under Otitis Media.

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Lead sponsor

Diakonessenhuis, Utrecht is the lead sponsor of 8 studies on the registry; 4 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
Child (0–17), Adult (18–64), Older adult (65+)
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Probability sample

Study population

All patients that underwent canal wall up or canal wall down mastoidectomy between 2010 and 2022 will be evaluated. Only cases that full-fill the in- and exclusion criteria will be selected. Patients will be stratified for whether they received mastoid obliteration or not.

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Suffering from CSOM, as indicated by otorrhea as main complaint preoperatively
  • At least one year of follow-up, in order to asses the primary outcome
  • Opacification of the mastoid air cells on preoperative CT-scans, as indication for mastoid involvement
  • Canal wall up or canal wall down mastoidectomy
  • Operated between 2010 and 2022

Exclusion criteria

Exclusion Criteria:

  • Patients suffering from middle ear cholesteatoma
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Study design

Observational model
Cohort
Time perspective
Retrospective
Enrollment
250 participants (estimated)
Patient registry
No

Groups and cohorts

  • Patients that underwent mastoidectomy alone

    This is the control group, consisting of patients that have underwent either canal wall up or canal wall down mastoidectomy for CSOM without mastoid obliteration

  • Patients that underwent mastoidectomy + mastoid obliteration

    This is the intervention group, consisting of patients that have underwent either canal wall up or canal wall down mastoidectomy for CSOM followed by obliteration of the mastoid cavity using S53P4 bioactive glass

    Device: S53P4 Bioactive glass

Interventions

  • DeviceS53P4 Bioactive glass

    Following mastoidectomy, the mastoid cavity, and if the ossicular chain has been removed the epitympanum as well, are obliterated using S53P4 bioactive glass. The bioactive glass is mixed with saline and administered to the cavity, ensuring a tight fit.

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What researchers measure

Primary outcomes

  1. The number of patients with a dry ear at one-year postoperatively

    The number of cases that have a dry ear at the one-year postoperative out-patient visit. A dry ear is defined as Merchant grade 0 or 1 (No otorrhea or less than one period of otorrhea in the last three months, respectively). A wet ear, thus suffering from otorrhea, is defined as merchant grade 2 or 3 (intermittent more than once in last three months or continuous discharge, respectively). We compare the obliteration cohort to the non-obliteration cohort.

    Time frame: At 1-year postoperatively

Secondary outcomes

  1. The number of cases with perforations of the tympanic membrane during follow-up

    The number of cases that will develop a perforation of the tympanic membrane during follow-up We compare the obliteration cohort to the non-obliteration cohort.

    Time frame: Measured at 1-year postoperatively and 3-years postoperatively

  2. The difference in air conduction postoperatively

    The differences in air conduction postoperatively, as measured in the first audiometry postoperatively in decibel. We compare the obliteration cohort to the non-obliteration cohort.

    Time frame: First audiometry postoperatively, which is made at 6 months postoperatively

  3. The number of cases which require revision surgery during follow-up

    The number of cases which require revision surgery during follow-up, for either recurrent CSOM and other indications We compare the obliteration cohort to the non-obliteration cohort.

    Time frame: Measured at 3-years and 5-years postoperatively

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Study locations

1 of 1 sites recruiting
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References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Dec 7, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT06160505
Lead sponsor
Diakonessenhuis, Utrecht
Responsible party
Sponsor
First posted
Dec 7, 2023
Start date
Oct 1, 2023
Primary completion
Apr 1, 2024 (estimated)
Completion
Jun 1, 2024 (estimated)
Last update
Dec 7, 2023

Study contacts

Leij-Halfwerk, Msc, Ir
Contact
Wetenschapsbureau@diakhuis.nl
0882506172
J.J. Quak, MD, PhD
principal investigator · Diakonessenhuis, Utrecht

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
Yes
View the source record on ClinicalTrials.gov ↗

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