Conference Schedule

Day1: March 8, 2018

Keynote Forum

Biography

Mohan Kameswaran, Managing Director & Senior Consultant of Madras ENT Research Foundation, is the Visiting Professor of Rajah Muthiah Med­ical College Hospital, Annamalai University, Chidambaram and at Sri Ram­achandra Medical University, Chennai. He graduated from Madras Medical College. He got his MS from Madras Medical College, Chennai and his Fellowship at the Royal College of Surgeons, Edinburgh. He has received several gold medals in his undergraduate and postgraduate days. He has been a recipient of the ‘PADMA SHRI’ National Award by the Government of India in recognition of his distinguished and exceptional service in the field of Medicine in 2006. Prof. Mohan Kameswaran was elected as an Ex­ecutive Board Member of the International Federation of Otorhinolaryngo­logical Societies (IFOS), in the recently concluded XIX WORLD CONGRESS OF OTO-RHINO-LARYNGOLOGY held from June 1 to 5, 2009 at São Paulo, Brazil. He is the FIRST Surgeon in South and South East Asia to have per­formed the AUDITORY BRAIN STEM IMPLANT and the FIRST PAEDIATRIC BRAINSTEM IMPLANT in Asia, January 2009. He is also the FIRST sur­geon in the Asia Pacific region to have performed the TOTALLY IMPLANTABLE HEARING DEVICE surgery.Along with general ENT Surgical work, he has focused on Cochlear Implants, Laser Surgery, Endoscopic Sinus Surgery and Skull Base Surgery. He is a pioneer in cochlear implant surgery and has the distinction of doing the first Contour Cochlear Implant & Freedom implant in the country. He is the first surgeon in India & South East Asia to have performed the Auditory Brain Stem Implant


Abstract

Introduction: Auditory brainstem implant (ABI) is increasingly being used for non-tumoral indications, especially in pre-lingually deaf children with bilateral cochlear nerve aplasia. Apart from cochlear nerve aplasia, complete labyrinthine aplasia, cochlear aplasia, and cochlear aperture aplasia are well-defined congenital indications for an ABI. The ABI bypasses the cochlear nerves and directly stimulates the cochlear nucleus.

Materials and Methods: 30 pediatric patients with bilateral cochlear aplasia and cochlear nerve aplasia underwent ABI surgery over a year period. The retrosigmoid approach in all patients.

Results: Intensive post-operative habilitation was given to the implantees and the outcomes were found to improve with the duration of habilitation. Overall, the results of pediatric ABI were found to be satisfactory.

Conclusion: The indications for pediatric ABI have evolved over the years. Appropriate selection of patients, thorough knowledge of anatomy, meticulous surgical technique and intensive post-operative habilitation are vital to achieve optimal outcomes.

Tracks

  • Head and Neck Surgery | Allergic and Inflammatory Disorders | Audiology and Sleep Disorders | Clinical Conditions of Otorhinolaryngology | Clinical Diagnosis | Cochlear Implantation | Facial Cosmetic Surgery | Genetical Effects in Otorhinolaryngology
Location: Strada

Mohan Kameswaran

Madras ENT Research Foundation, India

Chair

Biography

Petronela Zaharia is a first-year resident in the Otorhinolaryngology Department at St. Spiridon Hospital in Iasi, Romania, very passionate about this complicated field of interrelated systems. Recently participated at the IFOS ENT World Congress in Paris, where she expressed her desire to deepen her surgical skills and knowledge upon various themes. A team worker, agile, focused and with a desire to discover innovative outcomes in this specialty. Also, a very important aspect of her everyday practice is offering confidence, empathy and respect for her patients, managing to successfully combine medical knowledge with the aforementioned personality traits.


Abstract

Three-dimensional printing has numerous applications and has gained much interest in the medical world. The constantly improving quality of 3D-printing applications has contributed to their increased use on patients. Nowadays,3D

printing is very well integrated into the surgical practice and research. Also, the field of head and neck reconstructive surgery is constantly evolving because of the three-dimensional printing, a technology which can be widely used in a variety of situations such as the reconstruction of tissue defects, surgical planning to surgical guides, medical modeling, and prosthesis. By using 3D printing into tissue engineering and materials, it may be possible for otolaryngologists to implant 3D printed functional grafts into patients and will also provide a rapid production of personalized patient-specific devices. Advances in 3D printed implants and future tissue-engineered constructs will bring great progress to the field of otorhinolaryngology. Rhinosinusal tumors are a very important subject in otorhinolaryngology. malignomas of the nasal cavity and the paranasal sinuses count for less than 3% of the ENT-malignancies. We discuss the case of a 48 years old male patient diagnosticated with rhinosinusal carcinoma treated with radical surgery in July 2017 and now is under radiotherapy treatment. This case required a multidisciplinary surgical team: ENT, Plastic Surgery, OMFS, and Ophthalmology. In our experience, this procedure was perfectly adapted to the reconstruction of the anterior wall of the left maxillar sinus and inferior orbital wall, providing easier reconstruction using titanium mesh which proved to be safe and effective. This significantly reduces the operative time and improves aesthetic outcomes of postsurgical sinusal reconstruction. To conclude with, even though there are so many advantages of 3D printing, the additional expensive cost and the time needed to produce devices by current 3D technology still limit its widespread use in hospitals. There is a need for a formal cost-effectiveness analysis. However, the development of guidelines to improve the reporting of experience with 3D printing in surgery is highly desirable.

 

Biography

Mirian Cabral M . Castro, has been working at Faculty of Medicine and taking care of needy people in a public hospital, Santa Casa de Belo Horizonte, with more than 1000 beds as head of ORL and HNS department. Over the years developing skills in surgical treatment, studying, learning and teaching as team leader to improve healthcare and graduating new specialists.


Abstract

Juvenile nasopharyngeal angiofibroma (JNA) is a benign, vascular neoplasia, representing less than 5 percent of head and neck tumors which occur almost exclusively in male adolescents with a clinical presentation of nasal obstruction and repeated epistaxis. It has slow growth patterns around the sphenopalatine foramen and can expand into the nasal cavity, maxillary sinus, pterygomaxillary space, infratemporal fossa, orbit and middle cranial fossa. The infratemporal fossa (ITF) communicates with the orbit through the inferior orbital fissure, with the middle cranial fossa through the foramen spinosum, the pterygopalatine fossa (PPF) via the pterygomaxillary fissure, and the parapharyngeal space inferiorly. ITF remains one of the most difficult areas to access surgically. Traditionally, this area has been approached with a variety of techniques, but the visualization and surgical procedures are still limited due to its deep location within the surgical field. As technology improved, new instrumentation and experience resulted in the ability for treatment with a curative intent and good results. The preoperative arterial embolization has been used 24 to 48 hours before surgery, allowing endoscopic management in special patients. Employing endoscopic surgical approaches, the need for facial incisions, facial disarticulating osteotomies, or dissection of the facial nerve are eliminated, which may decrease surgical morbidity. Many endoscopic skull base surgeons consider endoscopic approaches a favorable alternative to more traditional open routes. Advantages of endoscopic access to the ITF include a magnified and multiangle view, ability to define clear dissection planes between the tumor and the surrounding structures, and improved visualization. The 2-surgeons technique can be used to provide better instrumentation and to avoid the necessity of traction when dissecting tumors from potentially hazardous areas.

Biography

Georgios Papadelis is an Associate Professor at the School of Music Stud­ies, at the Aristotle University of Thessaloniki in Greece. His field of exper­tise is Musical Acoustics, Psychoacoustics, and Music Cognition. He has a longstanding research interest on Music Perception in Cochlear Implant (CI) users, with a focus in the development of assessment tools for screening music listening abilities in CI users, and how we can improve their listening experience through structured music-based rehabilitation and training.


Abstract

Statement of the Problem: Even with the most advanced cochlear implant (CI) systems today, recipients still experience distorted pitch and timbre of individual tones in music, and this critically affects perceived consonance of tone combinations, such as intervals and chords. Recent experimental evidence suggests that judgements of chord consonance made by CI users significantly differ to those of normally hearing (NH) listeners, but there is growing evidence that CI users are somewhat able to recognize various consonance/dissonance classes in music. The purpose of this study was to identify key dimensions that underlie perception of musical consonance/ dissonance in CI users, and compare these to those of NH individuals. It was further intended to determine which particular timbral or perceptual features of a sound mostly associated with each one of these dimensions, and within each group separately.

Methodology & Theoretical Orientation: Ratings of perceived consonance/dissonance of twelve chords played on the piano were obtained in a group of CI users (N = 79), and a group of NH adults (N = 47). Analysis of participants’ ratings was based on a combination of multidimensional scaling techniques, computational feature-extraction algorithms, and principal component analysis.

Findings: Compared to NH listeners, results suggested that consonance rating and classification of chords is quite different in CI users. Most important, while the pitch structure of a chord was shown to be the primary determinant of perceived consonance in NH listeners, timbral properties of the sound appear to strongly affect judgements of chord-consonance in CI users.

Conclusion & Significance: Patterns of associations between spectral or structural descriptors of chords, and CI users’ perception of musical consonance obtained in this study, provide useful insights for further improvement of sound processing strategies for CI systems.

 

Biography

Raghu Nandhan Sampath Kumar is a Consultant ENT Surgeon at Madras ENT Research Foundation (MERF), Chennai, a premier tertiary referral ENT care Institute in South India. He specializes in Neuro-Otology, Auditory Implantation & Skull-Base Surgery having received higher surgical training from reputed centers like Manchester and Birmingham in the UK. He is a Fellow of the Royal College of Surgeons of Edinburgh, overseas member of ENT UK and British Cochlear Implant Group. He has a decade of experience with Cochlear & Brainstem Implants at MERF, which is today one of the largest centers in the world for Implantation Otology and he is currently the Clinical Lead for Otology at this Institute. He holds a PhD in Cochlear Implant Audiology and is also the Research Lead at MERF with keen interest in spearheading the various ongoing and future research programs of the institution. He has around 70 publica­tions in indexed medical journals and has presented research papers in international conferences around the world, where he has received awards. He has co-authored seven textbook chapters and is one of the very few Indian authors to write chapters in Scott-Brown and Logan-Turner. Apart from his passion to be a competent clinician and skilled surgeon, he dedicates his professional time to being a researcher, academic, medical leader, teacher and trainer for his peers and junior colleagues.


Abstract

Introduction: Advanced otosclerosis affects nearly 10% of patients with otosclerosis. Ossification of the cochlea increases with the course of the disease and may cause sensorineural or mixed hearing loss. Hearing aids, middle ear implants, stapedotomy and cochlear implants are the various management options for hearing loss in such a scenario. Stapedotomy is a treatment option for patients with mixed hearing loss and good speech discrimination (SDS >50%) where by serviceable audiological outcomes are achievable when a hearing aid is given after obviating the air-bone gap with surgery. Cochlear implantation (CI) is used successfully in patients with far advanced otosclerosis with poor cochlear reserve (SDS <50%) either as primary treatment or for progressive sensorineural loss following stapedotomy.

Methods: This presentation highlights the surgical issues related to advanced otosclerosis and analyzes the outcomes of stapedotomy + H.Aid and cochlear implantation, in a cohort of 153 patients with advanced otosclerosis who were managed at a premier tertiary referral ENT centre in South India 1997- 2017.

Results: Based on the rationale for candidacy as mentioned above, 110 of these patients underwent stapedotomy and received H.Aids while 43 patients received cochlear implants. Complete electrode insertion was possible in 39 patients and partial insertion was done in 4 patients due to partial cochlear ossification. Facial nerve stimulation was seen in 5 CI patients and appropriate management given. The outcomes of cochlear implantation and stapedotomy + H.Aid were both found to be satisfactory, with low complication rates (<5%). The patient related outcome measures were comparable in both cohorts with no obvious statistical differences (p<0.05).

Conclusion: A stringent candidacy criteria need to be defined for offering stapedotomy versus CI in advanced otosclerosis. Judicious counseling of patients regarding the rationale for choosing either intervention and explaining their realistic outcomes remains paramount.

Biography

Taliye Cakabay, is a practicing Ear, Nose& Throat (ENT specialist) in Kanuni Sultan Sulyman Education and Research Hospital. She completed his res­idency in Otolaryngology-Head and Neck Surgery at the Bakırköy Dr.Sadi Konuk Education and Research Hospital in 2011. She is a general otolaryn­gologist with special interest pediatric otolaryngology.


Abstract

Pediatric tracheostomy is a relatively common surgical procedure worldwide. In recent decades, the indications for pediatric tracheostomy have been changing. While in previous years acute airway inflammation such as diphtheria or epiglottis was a frequent infection of the tracheostomy, nowadays more frequent indications for pediatric tracheostomy include upper respiratory tract obstruction, long-term need for mechanical ventilation and necessity of pulmonary care. Approach to the child with airway problems requires a multidisciplinary approach. Pediatric tracheostomy procedure has higher morbidity, mortality and complication rates compared to the tracheostomy in adults population. Thus, the experience of the team is very important. The aim of this presentation is to advert indications, surgical technique and complications of pediatric tracheostomy.

Biography

Trissia Maria Farah Vassoler Otologist and Paediatric Otorhinolaryngologist, work with cochlear implantations since 2004, and have been studying since then ways to make a better planning of hearing and speech development treatment.


Abstract

To allow hearing is the first aim of cochlear implant but the most desired result by the family and society is oral communication. As soon as hearing is reestablished language development must initiate, but it is not that simple. There is a number of factors such as time of diagnose of deafness, age at implantation, interval between diagnose and cochlear implant surgery, family participation, rehabilitation, individual characteristics(prematurity, Intensive care unit, genetics, other comorbidities) that will determine the speed and quality of language acquisition. A good pre implant evaluation to detect this factors and to help the family to understand the outcomes and the close evaluation of post implant development, having instruments to measure this results comparing the children with itself can optimize treatment planning and enhanceperformance.

 

Biography

This is Eulaf Hassan Alaadah, had the bachelor degree of Medicine and Surgery from King AbdulAziz University on 2016. During 2017, she finished her internship training and got accepted in the Saudi board of OtoRhino­Laryngology– Head and Neck Surgery. She is passionate in doing research activities, teaching and volunteering. Her career vision is Seeking an impec­cable medical knowledge to be a leading medical doctor, a researcher, and a developer for medical & educational services in the society.


Abstract

Introduction: Neck pain is one of the most frequent complaints among general population. However, health care professional and Otolaryngologist are particularly vulnerable to this phenomenon.

Objective: To determine the prevalence of neck pain among Otolaryngologist, head and neck surgeons (ORL HNS). Furthermore, to assess the influence of neck pain on their quality of life.

Subjects and methods: A cross-sectional study was conducted during the 10th International Saudi Otorhinolaryngology Head & Neck Surgery Conference on March 2016, Jeddah, Saudi Arabia. The study included ORL HN surgeons.

Results: A total of 92 samples were collected. The most prevalent was general ORL doctors with a percentage of 32.6, followed by rhinologists with a 28.3%. As years of experience and the days of operation per month might have an influence on the rate of neck pain, most of our physician a 48.9% had an experience of 5-20 years. A high percentage of 81.4% was complaining from neck pain, 14.1% of them reported that this symptom is affecting their work. Some had stiffness, weakness and paresthesia with a 49.2%, 5.1% and 8.5% respectively. The Neck Disability Index was calculated, which showed that 34.8%had mild disability, 54.3% had moderate disability and 10.9% had severe disability.

Conclusion: It appears that the rate of operating days per month does affect the neck and the personal life of the doctor so does the years of expertise as it shows that with increase of workload the neck symptoms and its affect increases as well.

Biography

Dr. Ihsan Abbas Al-Baldawi born in Baghdad, Iraq in 1963. A graduate of collage of medicine/ University of Mosul/ Iraq M.B.Ch.B. in 1987. He worked as obligatory military services doctor 1988-1992, then became resident in otolaryngology from 1997 till 2004. Diploma in Otorhinolaryngology from Baghdad medical collage in 2006. -Fellow of the European Board of Oto­rhinolaryngology-Head and Neck surgery in Vienna 2014. ENT surgeon in AL-Kindy teaching hospital Baghdad from 2006 till now. ENT-Skullbase sur­geon in Neurosciences hospital Baghdad from 2009 till now. Member of the Arab Association of otorhinological surgeons’ society since 2011.


Abstract

Abstract: There are multiple approaches to reach the sellar region using microscope or endoscope, which are the old sublabial, with its post-operative morbidities, or the uni-nostril transseptal, which has a limited working field. Another technique is the direct transnasal, which is associated with tissue sacrifice, and lastly the bi-nostril (one side transseptal-other side transnasal), aiming to preserve one of the septal flaps.

Method: We have 27 case studies using a new technique in which we access the sphenoid endoscopicaly through the nasal septum from both nostrils under the mucoperichondrial-periosteal flap.

Conclusion: This new technique provides easy way of wide exposure to the

 

Day2: March 9, 2018

Keynote Forum

Biography

Christopher Honey is Professor of Surgery (Neurosurgery) at the Universi­ty of British Columbia in Vancouver, Canada. He is President of the Cana­dian Neuromodulation Society and a Board Member on the World Society for Stereotactic and Functional Neurosurgery. He has received his Medical degree from the University of Toronto and completed a Doctoral degree in Oxford as a Canadian Rhodes Scholar. His neurosurgical training was in Vancouver where he is a full tenured Professor


Abstract

Introduction: Inducible laryngeal obstruction has been described under more than 40 different eponyms including vocal cord dysfunction, paroxysmal vocal fold motion and irritable larynx. Some patients remain refractory to proton pump inhibitors, speech therapy and psychotherapy. We present a case series of four patients with hemi-laryngopharyngeal spasm (HELPS) who presented with inducible laryngeal obstruction and were cured following microvascular decompression (MVD) of their vagus nerve.

Method: Four patients with HELPS are described with details of their presentation, MR imaging, video-laryngoscopy, intra-operative findings, and clinical outcomes.

Results: All four patients presented with a 4-6 year history of intermittent but progressive throat contractions (choking) and cough. Symptoms increased in frequency, duration and severity and eventually occurred while sleeping. The choking caused severe stridor with rare LOC leading to intubation and tracheostomy (n=1). Three of the four had lateralized contractions. The coughing was triggered by a tickle deep to the xiphisternum and became severe enough to cause visual phosphenes, incontinence, and tussive headache. MR demonstrated a loop of posterior inferior cerebellar artery (PICA) adjacent to the vagus nerve (n=4). Intra-operative videos during MVD demonstrated compression of the vagus nerve in each case. All four were relieved of their symptoms with follow-up more than one year. Post-operative complications included dysphonia (n=3) resolving after one, three and ten days, dysphagia (n=1) resolving after two months, and delayed CSF leak (n=1) requiring a dural patch.

Conclusions: Hemi-laryngopharyngeal spasm is a recognizable condition with a combination of episodic but progressive throat contractions and coughing. MR imaging of a PICA loop adjacent to the vagus nerve should prompt consideration of MVD. All referrals came from a laryngologist and all were initially misdiagnosed as psychogenic. The incidence of this new medical condition is estimated to be approximately 1 in 100,000 per year.

 

Tracks

  • Laryngology | Neurotology, Otology | Otorhinolaryngological Manifestations in Lactating Women | Otorhinolaryngology and Cancer | Otorhinolaryngology and Fungal Infections | Otorhinolaryngology in Child Care | Pathology of Otorhinolaryngology
Location: Strada

Christopher Honey

University of British Columbia, Canada

Chair

Biography

Mohammed A. Gomaa is a professor of Otorhinolaryngology, faculty of Medicine, Minia university, Egypt. I am graduated from Minia University on 1990, spent my residency at Minia university Hospital, I spent all of my ca­reer at Minia university till I get the position of Full professor on 2014. I spent a couple of years as a research fellow at The University of Oklahoma Health Sciences Center from 1996 to 1998 working on head and neck cancer. I am a member of American Academy of Otorhinolaryngology, Head and Neck surgery since 1999 and now serving on Diversity committee also serving now as a Global Liaison of Otorhinolaryngology Section of American Nation­al Medical Association. I published 25 articles and another 10 now under publication, I published many of them at international Journal with impact factors. My h-index is 6 and have my papers cited in 134 articles so far. I present a lot of my work athighly ranked international conferences In USA, Europe, Dubai, and of course Egypt. I am consultant, Research Leader, and international scholar in the field of Otorhinolaryngology.


Abstract

Objective : Laryngeal cancer is the most common cancer in the head and neck. Human papilloma virus is a group of over 150 related viruses. Infection with certain types of HPV can also cause some forms of cancer. The aim of the study is multivariate analysis of sociodemographic and pathological character of Squamous cell carcinoma of the larynx and Human papilloma virus subtype-16.

Patients and Method: The study was conducted on 50 patients who were admitted at the otolaryngology-head and neck surgery department in Minia University Hospital, and other 4 University Hospitals during the period from January 2014 till December 2014. All patients were subjected to a preoperative assessment protocol that include history taking, general examination, otolaryngological examination, laryngeal imaging , laryngeal biopsy and biopsy assessment to identify the tumor grade and Immunohistochemical staining for HPV-16.

Results and conclusion: HPV-16 immunostaining was positive in 18% (9/50) cases studied. There was no statistically significant difference between the HPV-16 immunoreactivity and any of the clinicopathological variables. There was highly significant correlation between HPV-immunoreactivity and tumor grade (p=0.000).

 

Biography

This is Eulaf Hassan Alaadah, had the bachelor degree of Medicine and Surgery from King AbdulAziz University on 2016. During 2017, she finished her internship training and got accepted in the Saudi board of OtoRhinoLar­yngology – Head and Neck Surgery. She is passionate in doing research activities, teaching and volunteering. Her career vision is Seeking an impec­cable medical knowledge to be a leading medical doctor, a researcher, and a developer for medical & educational services in the society.


Abstract

Objective : To review the indications, findings, and complications of rigid bronchoscope in PICU patients.

Methodology: A retrospective study,reviewed the medical records of all documented cases admitted to PICU from 2010 until 2015 at King Abdulaziz University Hospital (KAUH).

Results: A total of 37 out of 400 reviewed subjects have underwent bronchoscopy during PICU stay and were analysed in the study.Nine (24.3%) out of 37 patients were found to have subglottic stenosis, followed by eight (18.9%) patients diagnosed to have vocal cord paralysis, normal airways (10.8%), laryngeal web (8.1%), foreign body (8.1), epiglottis (5.4%), trachea-esophageal fistula (5.4%), signs of pharyngo-larngyal reflux, right main bronchus adhesion and fibrosis, and congenital laryngomalcia. No any complication was noted except for a single patient who has failed the first trial of foreign body removal. Regarding consultation reasons nine patients (24.3%) were found to have stridor, followed by (18.9%) with respiratory distress, failed extubation (16.6), failed intubation (10%), foreign body (5.4%), respiratory distress (8.1%) laryngeal edema (5.4%), failed NGT insertion (2.7%) and bifid uvula (2.7%).

 

Biography

Assistant professor in Maxillo-facial, Plastic and Aesthetic Surgery, La Rab­ta Academic Hospital, Tunisia. Research Areas: Maxillofacial Surgery and Aesthetic Surgery.


Abstract

Background: The application of rhinoplasty in the treatment of traumatic nasal deformity remains one of the most challenging problems in plastic surgery.

Objectives: This study presents our experiences in the reconstruction of traumatic nasal deformities using the internal rhinoplasty approach.

Methods: We conducted a retrospective study from January 2001 to December 2013. We included in this study all patients operated for nasal post-traumatic deformity using closed approach. Each patient chart was reviewed with regard to: age and gender, circumstances and date of nasal trauma, timing of the rhinoplasty as well as for the functional and aesthetic outcomes.

Findings: 172 of these patients, including 115 males and 57 females, underwent the internal approach. The patients were, on average, 26 years old at the time of reconstruction and were followed up for an average period of 16 months. The interval from injury to the rhinoplasty procedure was 4.5 years, on average. The outcome was assessed by an independent investigator and the patients themselves. The overall aesthetic-improvement rate was 88%, and the patient-satisfaction rate was 95%. There was no complication.

Conclusion: Not only is the skeletal structure severely deformed, but the soft tissue may also be disfigured by a previous injury. The closed rhinoplasty technique provides great predictability and minimal postoperative discomfort, with no aesthetic damage

 

Biography

Dr Thomas Hendriks is a surgical resident medical officer from Western Australia. He has a passion for research and a specific interest in Ear, Nose and Throat Surgery. He has previously worked on several oral cancer projects based in Perth and is in the process of assessing Eustachian tube dilatation in patient suffering from Eustachian tube dysfunction.


Abstract

Objective: Bilateral cochlear implantation is becoming a standard procedure to enhance hearing in noise and quality of life.1-2Our aim is to identify which preoperative factors influence sequential bilateral cochlear implantation performance outcomes and to create a model that predicts benefit.

Design: A literature review was performed followed by analysis of our own database of over 90 sequentially implanted adult patients to identify which preoperative factors and patient characteristics had an effect on hearing in 50% of this population. A multiple regression analyses was performed and a prediction model formulated which was then validated by applying it to the other 50% of our population.

Participants: 92 post linguallydeafened adult patients participated and the main outcome measure was effect of preoperative factors on the maximum consonant-nucleus-consonant (CNC) phoneme sore in quiet with the second cochlear implant (CI2) one year after implantation.

Results: Three factors were positively correlated to speech understanding with CI2: Wearing a hearing aid (HA) before receiving CI2 (r=0.45, p=0.00), the maximum CNC phoneme score with the first CI (CI1) (r=0.23, p=0.04) and the use of a HA before CI1 in the first implanted ear (r=0.25, p=0.02). Two factors were negatively correlated: The total duration of hearing loss before CI2 (r=-0.25, p=0.02) and preoperative pure tone audiometry (0.5, 1, 2kHz) before CI2 in the second implanted ear (r=-0.27, p=0.01). The following model was created: Predicted CNC phoneme score with CI2 (%) = 25 + (39 * hearing aid use before CI2 (yes)) – (0.25 * length of hearing loss before CI2 (yrs)) + (0.20 * maximum CNC phoneme score with CI1) (%)).

Conclusion:Using a hearing aid before receiving a second CI and a high level of speech understanding with the first CI predict a positive outcome for sequential cochlear implantation. A long duration of hearing loss before receiving a second CI predicts a negative outcome.