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1.AR-Asst Tech

Aural Rehab SLP401

Microphone Converts acoustic energy (sound pressure) into electric energy.
Amplifier Digital Processor - converts electric (analog) signal to digital for processing (DSP) then back to analog.
Receiver Speaker - converts amplified electrical signal back to acoustic. Becoming smaller (esthetic) and less powerful (smaller range of HL)
Battery Power source. Zinc-air. Color-coded sizes.
BTE PROS: largest, most powerful, replaceable ear mold, easy cleaning, minimized head-shadow effect, easy access controls, more memory/features. CONS: big, annual tube replacement
RIC mic out, dome in. most popular, PROS: Allows lower freqs in naturally, amplifies high. Ear mold option (for more HL). Less occlusion/plugged up feeling. No tubing, no moisture. CONS: Wax buildup, feedback management. leaks power.
ITE Full ear bowl, custom-made. Mild to mod HL. PROS: ease of management (one piece), natural mic placement in ear canal opening. CONS: occlusion effect- vocal and chewing sounds reverberate.
ITC Custom mold leaves concha open. PROS: ease of management (one piece), natural mic placement. CONS: occlusion effect
CIC Custom mold. Not for severe or greater HL. PROS: ease of management, rec. near TM (improved high freqs, less feedback), difficult to see (cosmetic), preserves natural resonance of outer ear, easy to use with a phone. CONS: occlusion effect
IIC 2nd bend of ear canal. removable for patient cleaning/ battery replacement. Mix of BTE and ITE. PROS: smallest, least obtrusive. Modular design for easy part replacement. Exterior case large enough for sophisticated electronics and mics.
Extended Wear Several months without removal. Disposable. PROS: subscription-based, no maintenance, showering (no immersion). CONS: uncomfortable (40-50% return rate). Mild to moderate HL. only.
BAHA candidacy: atresia or chronic ME dysfunction, single-sided deafness, conductive and mixed HL.
CROS Contralateral routing of signal. Candidacy: unaidable HL in one ear, and normal in other. Unilateral severe to profound sensorineural hearing loss. Poor word discrim.
BI CROS candidacy: one ear is unaidable, aidable HL in other. Signals from both sides go to the best ear. severe to profound sensorineural hearing loss.
ME implant candidacy: 18+ with healthy middle ear intolerate of object in the canal. Complicated, expensive surgery not covered by insurance. Older (70+) patients less likely. Conductive and/or sensorineural (most often) HL. .
HA capabilities- DATFLWR directional microphones, automatic volume control, telephone coils (t-coils), feedback (whistling) control, listening programs, wireless technology/bluetooth , remote control
CI (adult candidacy) Severe to profound bilateral HL. Less than 50% speech recognition with open-set sentences. Ltd benefit HA trial. Poor word discrim scores. Realistic expectations.
CI (pediatric) Infants 12-24 mos: profound bi SNHL. No auditory progress with HA and EI. High motivation. Children 25 mos - 17 yrs: severe to profound bi SNHL, up to 30% on word recog at normal conversl levels. No auditory progress, high motivation.
CI preoperative criteria severe or profound bilateral SNHL, one year or older, intact AN, little or no benefit from HAs, 3-6 month trial w/ AR, no medical contraindications, no ME disease, educational setting, motivated familyand realistic expectations.
Created by: ashea01



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