Publications by authors named "Maarten J F De Wolf"

Purpose: To analyse diagnostic accuracy of MRI-DWI in detecting residual disease after cholesteatoma surgery and propose an optimum follow-up (FU) scheme.

Method: A retrospective chart review of patients who had cholesteatoma surgery in a tertiary referral centre. 3.

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Purpose: To evaluate the effectiveness and safety of surgery for chronic otitis media in elderly patients, compared to younger adults and children.

Methods: Patients with chronic otitis media with and without cholesteatoma formation were assessed. Patients aged 65 years and older were included and compared to adults aged 35-55 and to children.

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Objective: To compare short-term and long-term outcomes after transcanal endoscope-assisted with microscope-assisted ossiculoplasty using the Fisch titanium total prosthesis (FTTP).

Study Design: Retrospective chart review.

Setting: Tertiary referral center.

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Purpose: Few data are available regarding subjective complaints and quality of life (QoL) after subtotal petrosectomy (STP). The purpose of our study was to assess long-term surgical results after STP, and to evaluate disease-specific, patient-reported outcomes including QoL and subjective hearing.

Methods: A retrospective cohort study, including a postal survey, was performed in the Amsterdam University Medical Centers (Amsterdam UMC) location Academic Medical Centre (AMC).

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Objective: To assess the prognostic value of the ChOLE classification in predicting the severity of acquired cholesteatoma.

Method: A retrospective chart review of patients undergoing primary cholesteatoma surgery in our tertiary referral center. The primary outcome measures were analyzed in three groups of follow up (FU): residual cholesteatoma in group A, FU > 52 weeks after last-look surgery or MRI-DWI; recurrent cholesteatoma in group B, FU > 52 weeks after last outpatient visit; and adverse events (AE) in group C, FU > 12 weeks after surgery.

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Purpose: To quantify changes in the perceived epithelial border with narrow band imaging (NBI) and white light imaging (WLI) during cholesteatoma surgery and to objectify possible benefits of NBI in otology.

Methods: Perioperative digital endoscopic images were captured during combined approach tympanoplasty at our tertiary referral center using WLI and NBI (415 nm and 540 nm wavelengths). Sixteen otologic surgeon defined the epithelial borders within 16 identical WLI and NBI photos.

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Objective: To determine the pre- and postoperative clinical, audiological, vestibular, and patient-reported measures in patients undergoing transmastoid occlusion surgery for superior canal dehiscence syndrome (SCDS).

Study Design: Retrospective case review.

Setting: Tertiary referral centre, UK.

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Objective: To assess the prognostic value of the Japanese Otological Society (JOS), EAONO-JOS, and STAMCO classifications in predicting the severity of acquired cholesteatoma and to identify other factors that could influence residual and recurrent cholesteatoma, as well as adverse events (AE).

Method: A retrospective chart review of patients undergoing primary cholesteatoma surgery in our tertiary referral center. Primary outcome measures were based on three groups of follow-up (FU): Group A, studying residual cholesteatoma, FU > 52 weeks of last-look surgery or magnetic resonance imaging, diffusion-weighted imaging; group B, studying recurrent disease, FU > 52 weeks of last outpatient clinic visit; and group C, studying AE, FU > 12 weeks after surgery.

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Objectives/hypothesis: Assumed advantages of a minimally invasive endoscopic transmeatal approach in ear surgery are less postoperative pain, faster healing, and preservation of functional anatomy. We evaluated pain after ear surgery and compared endoscopic transmeatal, microscopic endaural, and retroauricular approaches.

Study Design: Prospective cohort study.

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Purpose: The purpose of this study is the evaluation of post-operative hearing threshold after revision surgery and obliteration of troublesome canal wall down mastoidectomy cavities (CWDMCs). The ability to use and tolerate conventional hearing aids (CHAs) was also evaluated.

Methods: A retrospective chart analysis of 249 patients with chronically draining CWDMCs who underwent revision surgery including obliteration of the mastoid cavity between 2007 and 2017 at the AMC location of the Amsterdam University Medical Centers (Amsterdam UMC) was performed.

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Objectives/hypothesis: The objective of this study was to evaluate surgical outcome and residual and recurrence rates of canal wall up (CWU) surgery with obliteration of the mastoid and epitympanum.

Study Design: Retrospective cohort study in a tertiary referral center.

Methods: Patients with (sequelae of) acquired cholesteatoma treated with primary or revision CWU surgery with obliteration of the epitympanum and mastoid were identified retrospectively from 2010 to 2014.

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Objective: To assess the effectiveness and safety of tympanoplasty in elderly patients and the effect of frailty on the results.

Study Design: Retrospective chart review.

Setting: Tertiary referral center.

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Article Synopsis
  • - This study aimed to identify risk factors for complications related to bone-anchored hearing implant (BAHI) surgery by analyzing data from 581 adult patients between 1988 and 2007.
  • - Key findings indicated that skin disease and profound learning difficulties significantly increased the likelihood of soft tissue reactions, while female gender showed a protective effect.
  • - Additionally, smoking was identified as a significant risk factor for implant loss and was also associated with lower chances of needing revision surgery, suggesting that certain health conditions and behaviors may influence BAHI surgery outcomes.
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Objective: To compare the 3-year stability, survival, and tolerability of 2 osseointegrated implants for bone conduction hearing: a wide 4.5-mm-diameter moderately roughened implant with a rounded 6-mm abutment (test) and a 3.75-mm diameter as-machined implant with a conically shaped 5.

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Objective: To determine factors predicting whether patients with single-sided deafness (SSD) opt for a bone conduction device (BCD) for the contralateral routing of sound (CROS) after a regular trial with a BCD on a headband.

Design: Retrospective case-control study.

Setting: Nijmegen, the Netherlands.

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The objective of this study is to determine the benefits of bone-anchored hearing aid (Baha) contralateral routing of signal (CROS) in the older adult population with single-sided deafness. Five questionnaires [general usage questionnaire, Glasgow benefit inventory (GBI), Abbreviated profile of hearing aid benefit (APHAB), Nijmegen cochlear implant questionnaire and the hearing handicap inventory for the elderly-screening version (HHIE-S)] were used to evaluate Baha use. Consecutive patients over 60 years of age with SSD fitted with a Baha CROS between April 1990 and April 2007 not using a conventional hearing aid in the better-hearing ear were identified.

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Objective: The aim of this study is to evaluate whether diabetes mellitus (DM) is a risk factor for titanium fixture loss in bone-conduction devices (BCDs) because of osseointegration failure.

Study Design: Retrospective case study.

Setting: Tertiary referral center.

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Objective: This study assesses soft tissue reactions and implant stability of 1,132 percutaneous titanium implants (970 patients) for bone conduction devices (BCDs). In addition, it examines BCD usage and comparisons between different patient groups.

Study Design: Retrospective survey.

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Objective: Determination of the difference in implant stability between a novel Baha implant system (test) and the previous-generation implant system (control).

Methods: In an open, randomized, prospective multicenter clinical investigation, 77 adult patients with Baha implants were included. Test and control implants were randomly assigned in proportions of 2:1.

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In the past 30 years, a large amount of clinical and audiological research on bone conduction hearing devices has been performed. In this review, we give a brief history of the developments in indications, surgical techniques and sound processors with respect to implantable bone conduction devices like the bone-anchored hearing aid or Baha. Starting with the use of Baha in patients with bilateral conductive or mixed hearing loss (HL), the indications for such devices have been extended to patients with unilateral HL, children and moderate mentally retarded patients.

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Objectives/hypothesis: A study performed in the 1990s with analogue linear hearing aids showed that in patients with mixed hearing loss and an air-bone gap that exceeded 25 to 30 dB, speech perception was better with a bone-anchored hearing aid (Baha) than with a conventional behind-the-ear (BTE) device. The objective of the present study was to investigate whether this conclusion applies to today's digital BTEs with feedback cancellation and whether the crossover point still occurs at an air-bone gap of 25 to 30 dB.

Study Design: Case control.

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Objective: To evaluate the benefits of a bone-anchored hearing aid (BAHA) in the daily lives of hearing-impaired children.

Design: Retrospective questionnaire study.

Setting: Nijmegen Medical Centre, Nijmegen, the Netherlands.

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Article Synopsis
  • The study evaluated the benefits and quality of life for older adults using bone-anchored hearing aids (BAHA) through a retrospective analysis involving four questionnaires.
  • The results showed that 84% of the 134 participants reported positive benefits from using BAHA, and over 80% used their devices for more than eight hours a day, indicating high satisfaction.
  • The findings highlighted that older users managed the BAHA well and experienced comparable or improved overall life quality as a result of the device.
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Objective: This study presents clinical data and quality of life questionnaire outcomes in children and young adults with bilateral Bone-Anchored Hearing Aids (BAHAs).

Study Design: Retrospective review.

Setting: Tertiary care referral center.

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Article Synopsis
  • - The study examined the success rates and skin reactions in older adults (60+) using bone-anchored hearing aids (BAHAs), focusing on 224 patients with 248 implants using a specific surgical technique.
  • - Out of the 248 implants followed for an average of 39 months, 6.5% were lost due to factors like osseointegration failure and trauma, with no losses attributed to infection.
  • - The results indicate that BAHA surgery is effective for older adults, showing implant loss rates similar to the general population, and low instances of severe skin reactions.
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