6 / 35
Page 27
Notes:
allied
academies
International Surgery and Ortho Conference
October 25-26, 2017 | Toronto, Canada
Case Rep Surg Invasive Proced 2017 | Volume 1 Issue 3
Insertion of cochlear implant electrodes through round window membranes: Its accessibility in
pediatric population
Montasir Junaid
Armed Forces Hospital Southern Region, Saudi Arabia
Introduction:
For infants and children with severe to profound
hearing impairment, cochlear implantation is the widely
accepted surgery of choice. There has been a recent shift
of electrode array insertion from bony cochleostomy to
round window membrane (RWM) insertion. Round window
membrane is strategically placed which could be accessed
after an optimal post tympanotomy. St. Thomas hospital (STH)
classification is used to evaluate the accessibility of RWM
insertion of electrode array and can be classified as Types I, IIa,
IIb and III. In type I RWM is 100% visible and insertion is straight
forward while in type III RWM is not visualized at all and a bony
cochleostomy is under taken.
Material & Methods:
A total of 190 pts were included with
minimum age of 1.5 years and maximum of 4.1 with mean of
2.76, There were 48.2% males and 50.3% females in the group.
Children with diagnosed syndromes or age more than 4.5 were
not included in study.
Results:
The cause of hearing loss in majority of cases was
unknown (53.7%) followed by low birth weight (14.7%),
maternal infections (12.6%), meningitis (6.3%), birth asphyxia
and jaundice (5.3%) and non-inherited congenital (2.1%) All the
type III pts underwent bony cochleostomies (2.1%) while simple
round window insertions were 65.3% (32.2% in Type I, 54.8% in
type II a and 12.9% in Type II b) and 32.6% underwent extended
round window insertion. (33.8% in type II a and 66.1% in Type
II b)
Conclusion:
STH classification is an easy way to assess the
accessibility of RWM insertion in patients planned for cochlear
implantation provided that a proper posterior tympanotomy
has been undertaken.
Speaker Biography
Montasir Junaid is an ENT Specialist with special interest in Otology and Head and Neck
Surgery. He has worked as Assistant Professor in Pakistan and currently is a visiting
faculty in Armed Forces Hospital southern region, Saudi Arabia. He has more than 25
publications and two books published as Author and Co-Author. He is also an Active
Member of Pakistan Cochlear Implant Program, where cochlear implants are being
done free of charge on financially challenged pediatric patients with complete hearing
loss.
e:
montsj@gmail.com