Objective

2

To improve the auditory perception of patients with sequential implantation of bilateral cochlear implants through cochlear implant adjustment

and achieve bilateral auditory symmetry and matching

and improve speech resolution ability of cochlear implants.

Methods

2

Use the hardware and software of the cochlear implant adjustment instruments to measure the electrical stimulation parameters required for the patient's bilateral cochlear implant. Evaluate and quantify the efficacy of cochlear implants through sound field assisted hearing threshold testing

speech audiometry

and subjective scales

Coach patients to use auditory assisted wireless devices to improve signal-to-noise ratio in noisy environments

and use wireless microphones for sentence testing under different signal-to-noise ratios.

Result

2

After adjustment

for the bilateral hearing aid ears

the hearing PTA was 20-30 dB HL

and the left (implanted in 2013) speech recognition rates were 46.7% for monosyllabic words

63% for bisyllabic words

74% for quiet sentences

and 32% for sentences with+10 dB signal-to-noise ratio noise. The speech recognition rates on the right side were 66% for monosyllabic words

60% for disyllabic words

45% for quiet sentences

and 45% for sentences with+10 dB signal-to-noise ratio noise. After using bilateral cochlear implants for one year

the speech recognition rates were 76% for monosyllabic words

75% for disyllabic words

96% for quiet sentences

and 34% for sentences with+10dB signal-to-noise ratio noise. Using wireless microphones to assist cochlear implants in testing sentence recognition rate+ the 10 dB signal-to-noise ratio score was 52%

the+5 dB signal-to-noise ratio score was 64%

the 0 dB signal-to-noise ratio score was 30%

the -5 dB signal-to-noise ratio score was 34%

and the -10 dB signal-to-noise ratio score was 18%.

Discussion

For this patient with severe or above hearing impairment

the effect of sequential bilateral implantation is clearly superior to unilateral implantation. The effect of cochlear implant is affected by the base note device. Audiologists can recommend the use of assistive devices to maximize the implant's listening performance in complex environments.