Outcomes of Bone Anchored Hearing Aid Implant at Universiti Kebangsaan Malaysia Medical Centre (UKMMC)

Abstract

The cross sectional study was conducted in Universiti Kebangsaan Malaysia Medical Center (UKMMC), Malaysia from August 2012 to December 2013. All patients implanted with in UKMMC from December 2001 until December 2012 was included. Glasgow Benefit Inventory (GBI) questionnaires and UKMMC questionnaires were used as part of the assessment tool. The GBI is a scoring which measures the change in health status produced by surgical interventions. UKMMC questionnaires was invented by our department to assess questions related to social and life style of patients and also the cosmetic perspective Baha implant and other daily related activities. The audiological assessment was assessed using hearing aid gain threshold. Complication with regards to skin reaction was graded using Holger Skin Classification. A total of 40 patients underwent Baha implant were recruited but only 35 patients fulfilled the criteria and included in this study for analysis. Age of patients ranged from 5 year old to 38 year old, with median of 13 years old. There were 22 patients (62.8%) were male and 13 patients (37.1%) were females. Almost all cases were canal atresia except one adult patient was a case of bilateral chronic discharging ear with chronic irritation with ear mould. Majority of patients 21 (60%) have hearing level of moderate to severe hearing loss (40-89 dB) and 14 patients (40%) have mild to moderate hearing loss (20-39 dB). The level of hearing was retested post operatively. All of the patients have improvement in their aided hearing with the range of 10-25 dBL which is statistically significant at value of<0.05. The GBI was scored positively in all subscales. Majority of patients (91.4%) used BAHA more than 4 h per day and 88.6% agreed that BAHA is cosmetically acceptable. All patients experienced some form of skin irritation (Holger grade 1-2) however only 20% required surgical intervention. All our patients have range of 10-25 dB improvement of their aided hearing which is statistically significant at value of<0.05. BAHA has been proven to show significant benefit in audiological improvement and quality of life.

Functional and patient-reported outcomes of bone-anchored hearing aids (BAHA): A prospective case series study

“…Regarding the functional outcomes, we verified, as expected, that with the BAHA, there was an overall significant improvement in sound-field PTA, SRT, and WRS and that the overall mean improvement of hearing threshold was 29 dB HL, which is slightly better than other published studies ( Bruschini et al., 2020 ; Rahim et al., 2018 ). Additionally, the degree of improvement was not statistically influenced by the type of hearing loss or indication for implant placement.…”

“…Additionally, as the scale assesses eight basic health concepts, the change/worsening of the patient's general health status may not be entirely due to the placement of the BAHA but due to other life events that may have occurred over the follow-up period that were not controlled in this study. Nevertheless, there are other studies that have evaluated the improvement of patients' HRQoL with BAHA, primarily with the Glasgow Benefit Inventory (GBI), which showed that the BAHA improved the patients' quality of life by improving their wellbeing and social and health status ( Hagr, 2007 ; Rahim et al., 2018 ).…”

The bone conduction implant BONEBRIDGE increases quality of life and social life satisfaction

“…However, PRO is an accepted method to test the outcome regarding to the quality of life with a certain therapy [ 31 – 34 ]. In the case of the bone-anchored hearing aid (BAHA) a number of other investigations proved an enhancement of QoL [ 35 – 37 ]. Badran et al showed in their BAHA-study already in 2006 the importance of patient’s self-rated QoL to justify a procedure and to reach a better predictive value at the time of preoperative counseling [ 38 ].…”

The Relationship Between Auditory Performances and Satisfaction of Unilateral Bone-Anchored Hearing in Conductive and Mixed Hearing Loss

“…In a study conducted in 2018, it was reported that an average of 5-25 dB functional gain was obtained with BAHA. 13 In this study, the functional gain was obtained on average 5-17 dB, while the best results were obtained at 4000 Hz.…”