Development of the Phoneme Discrimination Rate Using the Freiburg Monosyllabic Word Test in Patients with Cochlear Implants

Development of the Phoneme Discrimination Rate Using the Freiburg Monosyllabic Word Test in Patients with Cochlear Implants - PhonDi

Status

Recruiting

Phases

Unknown

Study type

Observational

Source

DRKS

Registry ID

DRKS00039909

Enrollment

100

Registered

2026-05-11

Start date

2026-01-08

Completion date

Unknown

Last updated

2026-06-01

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Z96.2

Interventions

Group 1: Adult postlingually deafened patients undergoing their first cochlear implantation. Prospective observational follow-up during routine postoperative care at the Hearing Center Düsseldorf. At

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Inclusion criteria

Inclusion criteria: Patients with postlingual sensorineural hearing loss Signed and dated informed consent form Normal anatomy of the auditory pathway and the cochlea

Exclusion criteria

Exclusion criteria: Failure to meet the inclusion criteria insufficient knowledge of the German language prelingual, severe hearing loss

Design outcomes

Primary

Measure	Time frame
Postoperative phoneme discrimination rate (percentage of correctly identified phonemes per test list of the Freiburg monosyllabic speech test). Assessed at initial activation and at 3, 6, 9, 12, 18 and 24 months postoperatively. Data collection by standardized implementation of the Freiburg monosyllabic speech test in routine audiological conditions with additional audio recording of responses and phonetic transcription for phoneme based analysis. WHAT? Postoperative phoneme discrimination rate (percentage of correctly identified phonemes per test list of the Freiburg monosyllabic speech test for each participant ). WHEN? Initial activation, 3, 6, 9, 12, 18, 24 months postoperatively HOW? Standardized Implementation of the freiburg monosyllabic speech test in routine clinical conditions with additional audio recording of patient responses and phonetic transcription to determine phoneme discrimination rate.	—

Measure

Time frame

Postoperative phoneme discrimination rate (percentage of correctly identified phonemes per test list of the Freiburg monosyllabic speech test). Assessed at initial activation and at 3, 6, 9, 12, 18 and 24 months postoperatively. Data collection by standardized implementation of the Freiburg monosyllabic speech test in routine audiological conditions with additional audio recording of responses and phonetic transcription for phoneme based analysis. WHAT? Postoperative phoneme discrimination rate (percentage of correctly identified phonemes per test list of the Freiburg monosyllabic speech test for each participant ). WHEN? Initial activation, 3, 6, 9, 12, 18, 24 months postoperatively HOW? Standardized Implementation of the freiburg monosyllabic speech test in routine clinical conditions with additional audio recording of patient responses and phonetic transcription to determine phoneme discrimination rate.

—

Secondary

Measure	Time frame
1. WHAT? Change in monosyllabic word recognition (percentage of correctly identified words per list in the Freiburg monosyllabic speech test) WHEN? Initial activation (EAP) and 3, 6, 9, 12 and 24 months postoperatively HOW? Standardized implementation of the Freiburg monosyllabic speech test under routine audiological conditions 2. WHAT? Association between phoneme discrimination rate and subjective listening effort WHEN? At each study visit after completion of speech testing HOW? Assessment using the Adaptive Categorical Listening Effort Scaling (ACALES) as a paper-based questionnaire after completion of the hearing test 3. WHAT? Influence of language proficiency on phoneme discrimination rate and additional test outcomes. WHEN? At the first study visit. HOW? Self-assessment questionnaire according to the Common European Framework of Reference for Languages (GER) using a six-point rating scale.	—

Measure

Time frame

1. WHAT? Change in monosyllabic word recognition (percentage of correctly identified words per list in the Freiburg monosyllabic speech test) WHEN? Initial activation (EAP) and 3, 6, 9, 12 and 24 months postoperatively HOW? Standardized implementation of the Freiburg monosyllabic speech test under routine audiological conditions 2. WHAT? Association between phoneme discrimination rate and subjective listening effort WHEN? At each study visit after completion of speech testing HOW? Assessment using the Adaptive Categorical Listening Effort Scaling (ACALES) as a paper-based questionnaire after completion of the hearing test 3. WHAT? Influence of language proficiency on phoneme discrimination rate and additional test outcomes. WHEN? At the first study visit. HOW? Self-assessment questionnaire according to the Common European Framework of Reference for Languages (GER) using a six-point rating scale.

—

Countries

Germany

Contacts

Public ContactMaika Werminghaus

Universitätsklinikum Düsseldorf, HNO, Hörzentrum

maika.werminghaus@med.uni-duesseldorf.de+492118117576

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Jun 11, 2026