European Journal of Molecular & Clinical Medicine

Background:Hearing loss (HL) can be defined as complete or partial loss of the ability
to hear and understand information, which limits or restricts an individual’s ability to
perform hearing-related activities. The present study assessed efficacy of two different
hearing aids in patients with hearing loss.
Materials & Methods: 94 patients with hearing loss of both genders were divided into 2
groups of 47 each. Group I comprised of channels ranged from 1 to 16. Group II had
the number of channels ranged from 2 to 16. Patient satisfaction levels was recorded
using the international outcome inventory for hearing aids, Turkish edition (IOI-HATR).
Total individual subjective satisfaction (TISS) scores were also recorded.
Results: Group I had 27 males and 20 females and group II had 29 males and 18
females. The mean TISS score at 1 month in group I was 48 and in group II was 62, at 6
months was 53 and in group II was 68 and at 12 months in group I was 60 and 74 in
group II. The difference was significant (P< 0.05).
Conclusion: There was better hearing with devices with good technologic features such
as more channels and a lower minimum frequency.

Background:The use of mobile phones operating in the 900 and 1800 MHz frequency
bands is widespread and increasing rapidly, the use of microwave (MW) at these
frequencies could cause some adverse biological effects. The present study was conducted
to assess effect of mobile phone usage on hearing.
Materials & Methods: 120 subjects of both genders were randomly divided into 3 groups of
40 each. Group I were those using mobile phones for > 1 hour per day, group II consists of
those who were using mobile phones for <1 hour per day and group III were those who did
not use mobile phones or very occasional users (<1 hour per week). All subjects were
subjected to tympanometry and distortion product otoacoustic emission (DPOAE) tests.
Results: There were 18 males and 22 females in group I, 20 males and 20 females in group
II and 17 males and 23 females in group III. Sensorineural hearing loss was seen among 7
in group I, 3 in group II and 1 in group III. Side was left in 3 and 2 and right in 4, 1 and 1
in group I, II and III respectively. The difference was significant (P< 0.05). Frequency was
low seen in 17%, 23% and 20%, mid in 6%, 10% and 7% and high in 45%, 30% and 20% in
group I, II and III respectively. The difference was significant (P< 0.05).
Conclusion: Frequent use of mobile phones led to hearing loss among population.

Background:Hearing loss not only causes a deficiency in a person’s capacity to perceive
sounds, but it also brings about psychosocial compromises. The present study was
conducted to compare efficacy of two different hearing aids in patients with hearing
loss.
Materials & Methods: 72 patients with hearing loss were divided into 2 groups. Each
group had 36 patients. Group I comprised of channels ranged from 1 to 16. Group II
had the number of channels ranged from 2 to 16. The minimum frequency ranged from
100 to 160 Hz and the maximum from 5,800 to 7,600 Hz. Total individual subjective
satisfaction (TISS) scores were also recorded.
Results: The group I had 17 males and 109 females and group II had 20 males and 16
females. The mean TISS score at 1 month, 6 months and 12 months in group I was 50,
55 and 63 and in group II was 60, 68 and 75 respectively (P< 0.05). The difference was
significant (P< 0.05).
Conclusion: Devices with good technologic features such as more channels, a lower
minimum frequency, and a higher maximum frequency result in better hearing.