My Scientific Papers

Prof. Abdulrahman Hagr MBBS FRCS(c)

President of Saudi ORL Society President of Arab Academy of Otology and Cochlear Implant IFOS Congress Program Chair Professor King Saud University

Citations     958

h-index         18

i10-index      29

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2024

  • Asma Alahmadi, Yassin Abdelsamad, Elsaeid M Thabet, Ahmed Hafez, Fares Alghamdi, Khalid M Badr, Saeed Alghamdi, Abdulrahman Hagr.  Advancing Cochlear Implant Programming: X-ray Guided Anatomy-Based Fitting. Otol Neurotol. 2024 Feb 1;45(2):107-113. doi:10.1097/MAO.0000000000004069.

2023

  • Hajr E, Abdelsamad Y, Almuhawas F, Alashour A, Hagr A.  Cochlear Implantation: The use of OTOPLAN Reconstructed Images in Trajectory Identification. Ear Nose Throat J. 2023 Jan 7:1455613221134742. doi: 10.1177/01455613221134742.
  • Alothman N, Almuhawas F, Badghaish R, Alotaibi AH, Alhabib SF, Alzhrani F, Hagr A.  Cochlear Implantation in Pediatrics: The Effect of Cochlear Coverage.  J Pers Med. 2023 Mar 21;13(3):562. doi: 10.3390/jpm13030562.
  • Albazee E, Abu-Zaid A, Alshammari B, Salamah M, Alolaywi AN, Almobarak AA, Hagr A. Efficacy of gelfoam middle ear packing in type-1 tympanoplasty: systematic review and meta-analysis.  Eur Arch Otorhinolaryngol. 2023 Apr 20. doi: 10.1007/s00405-023-07975-1
  • Alshalan A, Abdelsamad Y, Yousef M, Alahmadi A, Almuhawas F, Hagr A.  Early activation after cochlear implantation: a systematic review. Eur Arch Otorhinolaryngol. 2023 Apr 25. doi: 10.1007/s00405-023-07965-3
  • Asma Alahmadi, Yassin Abdelsamad, Noura I Alothman, Afrah Alshalan, Fida Almuhawas, Nouf A AlAmari, Mohammed Y Alyousef, Salman F Alhabib, Abdulrahman Hagr.  A Literature Review on Cochlear Implant Activation: From Weeks to Hours. Ear Nose Throat J 2023 Aug 8:1455613231188294. doi: 10.1177/01455613231188294.
  • Asma Alahmadi, Yassin Abdelsamad, Bassam Al-Zuraiqi, Saeed Alghamdi, Abdulrahman Hagr, Essam Saleh.  Cochlear Implantation in Radiation-Induced Hearing Loss: A Systematic Review. Otol Neurotol. 2023 Sep 1;44(8):767-774. doi: 10.1097/MAO.0000000000003953. Epub 2023 Jul 18.
  • Nawaf Fatani, Nezar Hamed, Abdulrahman Hagr .   Simultaneous Bilateral Cochlear Implantation in Adults.  J Pers Med 2023 Oct 4;13(10):1462. doi: 10.3390/jpm13101462.

  • Aljazeeri, S Alturaiki, Y Abdelsamad, F Alzhrani, A Hagr.   Various approaches to the round window for cochlear implantation: a systematic review. J Laryngol Otol. 2023 Oct;137(10):1064-1082. doi:10.1017/S0022215122001438. Epub 2022 Jun 22.

  • Ghassan Bin Lajdam, Rana A Alahmadi, Mohammed Alhakami, Abdullah A Ghaddaf, Ahmed S Abdulhamid, Asma Alahmadi, Yassin Abdelsamad, Abdulrahman Hagr .   Comparison of temporalis muscle fascia and cartilage grafts for primary type 1 tympanoplasty: a meta-analysis of randomized controlled trials. Eur Arch Otorhinolaryngol. 2023 Dec;280(12):5153-5165. doi: 10.1007/s00405-023-08170-y. Epub 2023 Aug 4.

2022

  • Aljazeeri I, Khurayzi T, Abdelsamad Y, Almuhawas F, Hagr A.  Changes in the Area Adjacent to the Internal Receiver-Stimulator of Cochlear Implant: A Retrospective Study.  Curr Med Imaging. 2022;18(2):249-255. doi: 10.2174/1573405617666211104095421. 
  • Yousef M, Mesallam TA, Almasaad A, Alhabib S, Hagr A, Alzhrani F. Cochlear implantation versus auditory brainstem implantation in children with auditory nerve deficiencies.  Eur Arch Otorhinolaryngol. 2022 Mar;279(3):1295-1300. doi: 10.1007/s00405-021-06792-8
  • Van de Heyning P, Roland P, Lassaletta L, Agrawal S, Atlas M, Baumgartner WD, Brown K, Caversaccio M, Dazert S, Gstoettner W, Hagen R, Hagr A, Jablonski GE, Kameswaran M, Kuzovkov V, Leinung M, Li Y, Loth A, Magele A, Mlynski R, Mueller J, Parnes L, Radeloff A, Raine C, Rajan G, Schmutzhard J, Skarzynski H, Skarzynski PH, Sprinzl G, Staecker H, Stöver T, Tavora-Viera D, Topsakal V, Usami SI, Van Rompaey V, Weiss NM, Wimmer W, Zernotti M, Gavilan J.  Suitable Electrode Choice for Robotic-Assisted Cochlear Implant Surgery: A Systematic Literature Review of Manual Electrode Insertion Adverse Events. Front Surg. 2022 Mar 24;9:823219. doi: 10.3389/fsurg.2022.823219. eCollection 2022
  • Van de Heyning P, Gavilán J, Godey B, Hagen R, Hagr A, Kameswaran M, Li Y, Manoj M, Mlynski R, O’Driscoll M, Pillsbury H, Raine CH, Rajan G, Schmutzhard J, Staecker H.  Worldwide Variation in Cochlear Implant Candidacy. J Int Adv Otol. 2022 May;18(3):196-202. doi: 10.5152/iao.2022.21470.
  • Aljazeeri I, Alturaiki S, Abdelsamad Y, Alzhrani F, Hagr A.  Various Approaches to the Round Window for Cochlear Implantation: A Systematic Review.J Laryngol Otol. 2022 Jun 22:1-31. doi: 10.1017/S0022215122001438. Online ahead of print.
  • Aljazeeri I, Alrajhi M, Hagr A.Hearing Improvement After Pain Related to Cochlear Implant Explantation: A Case Report.  J Int Adv Otol. 2022 Jul;18(4):374-377. doi: 10.5152/iao.2022.21557.
  • Alohali YA, Fayed MS, Mesallam T, Abdelsamad Y, Almuhawas F, Hagr A.A Machine Learning Model to Predict Citation Counts of Scientific Papers in Otology Field.Biomed Res Int. 2022 Jul 20;2022:2239152. doi: 10.1155/2022/2239152. eCollection 2022.
  • Alhabib SF, Almuhawas F, Hagr A, Alzhrani F, Hamed N, Alenzi S, Abdelsamad Y, Dhanasingh A.  Mastoid Growth and the Configuration of Cochlear Implant Electrode Lead. Ear Nose Throat J. 2022 Jul 21:1455613221106221. doi: 10.1177/01455613221106221. Online ahead of print.
  • Yousef MF, Theyab R, Garadat SN, Hagr A.Bilateral Cochlear Implantations in Temporal Bone Fracture: A Viable Treatment Option.Laryngoscope. 2022 Oct;132(10):2050-2055. doi: 10.1002/lary.29994.
  • Aljazeeri I, Hamed N, Abdelsamad Y, Sharif T, Al-Momani M, Hagr A.  Anatomy-Based Frequency Allocation in Cochlear Implantation: The Importance of Cochlear Coverage. Laryngoscope. 2022 Nov;132(11):2224-2231. doi: 10.1002/lary.30004. 
  • Salamah MA, Al-Ahmadi A, Arabi S, Alsaleh WA, Aljuwayyan A, Yousef MF, Halawani R, Hagr A.The Influence of the COVID-19 Pandemic on the Hearing Impaired. Cureus. 2022 Nov 10;14(11):e31348. doi: 10.7759/cureus.31348. eCollection 2022 Nov. 
  • Dhanasingh AE, Weiss NM, Erhard V, Altamimi F, Roland P, Hagr A, Van Rompaey V, Van de Heyning P.  A novel three-step process for the identification of inner ear malformation types. Laryngoscope Investig Otolaryngol. 2022 Nov 24;7(6):2020-2028. doi: 10.1002/lio2.936. eCollection 2022 Dec
  • Alsalhi A, Alshawi YA, Alsalhi HS, Hagr A.  Cochlear Implant Induced Labyrinthine Ossificans in Mondini Malformation: A Case Series. Cureus. 2022 Dec 17;14(12):e32648. doi: 10.7759/cureus.32648. eCollection 2022 Dec
  • Isra Aljazeeri, Shaza Saleh, Maram Alkahtani, Fida Almuhawas, Yassin Abdelsamad, Abdulrahman Hagr. Remote programinng of cochlear implants.” The coronavirus disease 2019 pandemic experience. DOI:10:4103/sjoh.sjoh_19_22

2021

  • Yousef M, Mesallam TA, Garadat SN, Almasaad A, Alzhrani F, Alsanosi A, Hagr A.  Audiologic Outcome of Cochlear Implantation in Children With Cochlear Nerve Deficiency.  Otol Neurotol. 2021 Jan;42(1):38-46. doi: 10.1097/MAO.0000000000002849.
  • Alhabib SF, Abdelsamad Y, Yousef M, Alzhrani F, Hagr A.  Effect of early activation of cochlear implant on electrode impedance in pediatric population.  Int J Pediatr Otorhinolaryngol. 2021 Jan;140:110543. doi: 10.1016/j.ijporl.2020.110543
  • Aldhafeeri AM, Alzhrani F, Alajlan S, AlSanosi A, Hagr A.  Clinical profile and management of revision cochlear implant surgeries.  Saudi Med J. 2021 Feb;42(2):223-227. doi: 10.15537/smj.2021.2.25647.
  • Alenzi S, Dhanasingh A, Alanazi H, Alsanosi A, Hagr A.  Diagnostic Value of 3D Segmentation in Understanding the Anatomy of Human Inner Ear Including Malformation Types.  Ear Nose Throat J. 2021 Sep;100(5_suppl):675S-683S. doi: 10.1177/0145561320906621
  • Garadat SN, Alkharabsheh A, Almasri NA, Hagr A.  Pediatric Arabic Closed-Set Word-Recognition Test: Development and Evaluation of Psychometric Characteristics. J Am Acad Audiol. 2021 Sep;32(8):547-554. doi: 10.1055/s-0041-1732440.
  • Garadat SN, Alkharabsheh A, Almasri NA, Hagr A.  Erratum: Pediatric Arabic Closed-Set Word-Recognition Test: Development and Evaluation of Psychometric Characteristics.  J Am Acad Audiol. 2021 Sep;32(8):e1. doi: 10.1055/s-0042-1759699
  • Dhanasingh A, Erpenbeck D, Assadi MZ, Doyle Ú, Roland P, Hagr A, Van Rompaey V, Van de Heyning P.  A novel method of identifying inner ear malformation types by pattern recognition in the mid modiolar section.  Sci Rep. 2021 Oct 21;11(1):20868. doi: 10.1038/s41598-021-00330-6
  • van de Heyning P, Mertens G, Topsakal V, de Brito R, Wimmer W, Caversaccio MD, Dazert S, Volkenstein S, Zernotti M, Parnes LS, Staecker H, Bruce IA, Rajan G, Atlas M, Friedland P, Skarzynski PH, Sugarova S, Kuzovkov V, Hagr A, Mlynski R, Schmutzhard J, Usami SI, Lassaletta L, Gavilán J, Godey B, Raine CH, Hagen R, Sprinzl GM, Brown K, Baumgartner WD, Karltorp E.  Two-phase survey on the frequency of use and safety of MRI for hearing implant recipients.  Eur Arch Otorhinolaryngol. 2021 Nov;278(11):4225-4233. doi: 10.1007/s00405-020-06525-3.
  • Alhabib SF, Abdelsamad Y, Badghaish RS, Alzhrani F, Hagr A, Almuhawas F.  Cochlear implant: More hearing better speech performance.  Int J Pediatr Otorhinolaryngol. 2021https://pubmed.ncbi.nlm.nih.gov/34454193/ Nov;150:110896. doi: 10.1016/j.ijporl.2021.110896
  • Alkhodair MB, Mesallam TA, Hagr A, Yousef MF.  Arabic Version of short form of the Speech, Spatial, and Qualities of Hearing Scale (SSQ12).  Saudi Med J. 2021 Nov;42(11):1180-1185. doi: 10.15537/smj.2021.42.11.20210441

2020

  • Almuhawas FA, Dhanasingh AE, Mitrovic D, Abdelsamad Y, Alzhrani F, Hagr A, Al Sanosi A.  Age as a Factor of Growth in Mastoid Thickness and Skull Width. Otol Neurotol. 2020 Feb 19. doi: 10.1097
  • Aldhafeeri AM, Saleh S, Almuhawas F, Hagr A. Feasibility of Day Surgery for Cochlear Implantation under Conscious Sedation with Same-Day Fitting. J Int Adv Otol. 2020 Dec;16(3):303-308. doi: 10.5152/iao.2020.8208
  • Alsughayer L, Al-Shawi Y, Yousef M, Hagr A. Cochlear electrode array tip fold-over in incomplete partition-I – A case report. Int J Pediatr Otorhinolaryngol. 2020 Dec;139:110438. doi: 10.1016/j.ijporl.2020.110438
  • Almazroua AM, Alsughayer L, Ababtain R, Al-Shawi Y, Hagr AA. The association between consanguineous marriage and offspring with congenital hearing loss. Ann Saudi Med. 2020 Nov-Dec;40(6):456-461. doi: 10.5144/0256-4947.2020.456
  • Halawani R, Alzhrani F, Almuhawas F, Hagr AA.  FORM24 electrode array and perioperative cerebrospinal fluid leakage in cochlear implant recipients with cochleovestibular malformations. Ann Saudi Med. 2020 Nov-Dec;40(6):477-481. doi: 10.5144/0256-4947.2020.477
  • Eman Hajr, Laila Hajr, Fida Almuhawas, Farid Alzhrani, Abdulrahman Hagr.  Skeletonizing the facial nerve underwater: A pilot study. DOI: 10.4103/SJOH.SJOH_34_20

2019

  • Albalawi Y, Nidami M, Almohawas F, HagrA, Garadat SN. Categories of Auditory Performance and Speech Intelligibility Ratings in Prelingually Deaf Children With Bilateral Implantation. Am J Audiol. 2019 Mar 15;28(1):62-68. doi: 10.1044/2018_AJA-17-0112.
  • Doubi A, Almuhawas F, Alzhrani F, Doubi M, Aljutaili H, Hagr The Effect of Cochlear Coverage on Auditory and Speech Performance in Cochlear Implant Patients. Otol Neurotol. 2019 Jun;40(5):602-607. doi: 10.1097.
  • AlHelali N, Hajr E, Almuhawas F, Hagr A. Bilateral Cochlear Implantation in Vogt-Koyanagi-Harada Syndrome: A Case Report. Otol Neurotol. 2019 Aug;40(7):e694-e697. doi: 10.1097/MAO.0000000000002262.
  • Alzhrani F, Alahmari MS, Al Jabr IK, Garadat SN, Hagr AA. Cochlear Implantation in Children with Otitis Media.Indian J Otolaryngol Head Neck Surg. 2019 Nov;71(Suppl 2):1266-1271. doi: 10.1007/s12070-018-1301-z. Epub 2018 Mar 17.

2018

  • Rajan G, Tavora-Vieira D, Baumgartner WD, Godey B, Müller J, O’Driscoll M, Skarzynski H, Skarzynski P, Usami SI, Adunka O, Agrawal S, Bruce I, De Bodt M, Caversaccio M, Pilsbury H, Gavilán J, Hagen R, Hagr A, Kameswaran M, Karltorp E, Kompis M, Kuzovkov V, Lassaletta L, Yongxin L, Lorens A, Manoj M, Martin J, Mertens G, Mlynski R, Parnes L, Pulibalathingal S, Radeloff A, Raine CH, Rajeswaran R, Schmutzhard J, Sprinzl G, Staecker H, Stephan K, Sugarova S, Zernotti M, Zorowka P, Van de Heyning P. Hearing preservation cochlear implantation in children: The HEARRING Group consensus and practice guide.  Cochlear Implants Int. 2018 Jan;19(1):1-13. doi: 10.1080 /14670100. 2017. 1379933 . Epub 2017 Oct 26.

2017

  • Alzhrani F, Mokhatrish MM, Al-Momani MO, Alshehri H, Hagr A, Garadat SN. Effectiveness of stapedotomy in improving hearing sensitivity for 53 otosclerotic patients: retrospective review. Ann Saudi Med. 2017 Jan-Feb;37(1):49-55. doi: 10.5144/0256-4947.2017.49.
  • Alrashidi E, Almuhawas FA, Hagr A, Garadat S. The use of an illuminated retractor in cochlear implantation: a comparative retrospective study. Ann Saudi Med. 2017 Mar-Apr;37(2):161-165. doi: 10.5144/0256-4947.2017.161.

2016

  • Hagr, Garadat, Hassan, Malki, Al Ohali, Al Ghamdi, Al Nafjan, Al Masaad, Al Hamid. The Effect of the Arabic Computer Rehabilitation Program “Rannan” on Sound Detection and Discrimination in Children with Cochlear Implants. J Am Acad Audiol. 2016 May;27(5):380-7.
  • Sennaroğlu L, Colletti V, Lenarz T, Manrique M, Laszig R, Rask-Andersen H, Göksu N, Offeciers E, Saeed S, Behr R, Bayazıt Y, Casselman J, Freeman S, Kileny P, Lee DJ, Shannon RV, Kameswaran M, Hagr A, Zarowski A, Schwartz MS, Bilginer B, Kishore A, Sennaroğlu G, Yücel E, Saraç S, Ataş A, Colletti L, O’Driscoll M, Moon IS, Gärtner L, Huarte A, Nyberg G, Mocan BÖ, Atay G, Bajin MD, Çınar BÇ, Batuk MÖ, Yaralı M, Aydınlı FE, Aslan F, Kirazlı MC, Özkan HB, Hans JM, Kosaner J, Polak M. Consensus statement: Long-term results of ABI in children with complex inner ear malformations and decision making between CI and ABI. Cochlear Implants Int. 2016 Jul 21:0

2015

  • Hagr A, Garadat SN, Al-Momani M, Alsabellha RM, Almuhawas FA. Feasibility of one-day activation in cochlear implant recipients. Int J Audiol. 2015 May;54(5):323-8. doi: 10.3109/14992027.2014.996824. Epub 2015 Jan 30.
  • Hagr A.  Saudi Mendeliome Group. Comprehensive gene panels provide advantages over clinical exome sequencing for Mendelian diseases. Genome Biol. 2015 Jun 26; 16:134. doi: 10.1186/s13059-015-0693-2
  • Gavilan J, Adunka O, Agrawal S, Atlas M, Baumgartner WD, Brill S, Bruce I, Buchman C, Caversaccio M, De Bodt MT, Dillon M, Godey B, Green K, Gstoettner W, Hagen R, Hagr.  Quality standards for bone conduction implants. Acta Otolaryngol. 2015 Dec;135(12):1277-85.Hagr

2014

  • Hagr Cochlear Implant and Thiamine-Responsive Megaloblastic Anemia Syndrome. Annals of Saudi Medicine., Jan-Feb 2014;34(1):78-80
  • Al-Muhawas F, Hagr A. Cochlear implant for bilateral profound sensorineural hearing loss in an adolescent with sickle cell anemia. Annals of Saudi Medicine. Mar-Apr 2014;34(2):167-70
  • Alsabellha RM, Hagr A, Al-Momani MO, Garadat SN. Cochlear implant device activation and programming: 5 days postimplantation. Otol Neurotol. 2014 Apr;35(4): e130-4.
  • Abu-Amero KK, Hagr AA, Almomani MO, Azad TA, Alorainy IA, Oystreck DT, Bosley TM. HOXA1 Mutations are Not Commonly Associated with Non-Syndromic Deafness. Can J Neurol Sci. 2014 Jul;41(4):448-51. 

2013

  • Alsanosi AA, Al-Momani MO, Hagr AA, Almomani FM, Shami IM, Al-Habeeb SF. The acute auditory effects of exposure for 60 minutes to mobile`s electromagnetic field. Saudi Med J. 2013 Feb;34(2):142-6.

2011

  • Hajr E, Hagr A, Al-Arfaj A, Ashraf M. Suction cautery adenoidectomy (SCA): is the additional cost justified? Int J Pediatr Otorhinolaryngol. 2011 Mar;75(3):327-9.
  • Hagr A, Jamjoom D, Sanai FM, Al Hamoudi W, Abdo AA, Al-Arfaj A. Effect of interferon treatment on hearing of patients with chronic hepatitis C. Saudi J Gastroenterol. 2011 Mar-Apr;17(2):114-8.
  • Hagr Cochlear implantation in fractured inner ear. J Otolaryngol Head Neck Surg. 2011 Aug;40(4):281-7.
  • Hagr Intra-Operative Neural Response Telemetry and Acoustic Reflex Assessment using an Advance-In-Stylet Technique and Modiolus-Hugging, A prospective cohort study. SQU Med J; 2011 Aug; 11 (3): 369-377
  • Hagr A, Bance M. Anterior Tip of Mastoid (ATOM): new syndrome and new treatment. J Otolaryngol Head Neck Surg. 2011 Nov; 40 (5)1–8
  • Ramili D, Hagr A, Ashraf M, Al-Arfaj A. Effect of Breastfeeding on Hearing Outcome. The Saudi Journal of Oto-Rhino-Laryngology Head and Neck Surgery 2011 Jan 13 (1) 38-42.

2010

  • Hagr Dangerous space emphysema after dental treatment. Annals of Thoracic Medicine 2010 July-September 5 (3): 174-175.
  • Hagr Hearing Improvement after Partial Labyrinthectomy Resection of petrous apex cholesterol granuloma. SQU Med J, 2010 August, 10 (2): 137- 142.
  • Al-Qahtani M, Hagr.  A preliminary study of endoscopic acoustic stapedial reflex in chronic otitis media. Saudi Med J. 2010 Aug;30(8):900-3.
  • Hagr Superior Canal Dehiscence Syndrome.  Journal of King Abdulaziz University – Medical Sciences 2010; 17 (2)  57-72
  • Naif Al-Ruwali, Hagr Prevalence of presbycusis in older adults in Saudi Arabian population. Journal of Taibah University Medical Sciences 2010 5 (1) 21-26.

2009

  • Hagr A. Comorbid psychiatric conditions of benign paroxysmal positional vertigo (BPPV). International Journal of Health Sciences. 2009 3;1
  • Malki KH, Al-Habib SF, Hagr A, Farahat MM. Acoustic analysis of normal Saudi adult voices. Saudi Med J. 2009 Aug;30(8):1081-6.

2008

  • Thien-Tuong-Vi Vu, Anthony G.  Zeitouni,  Pantelis  Tsinalis,  William D.  Foulkes, Abdulrahman Hagr Familial Clustering of Parotid Gland Lymphoepithelioma in North America. J Otolaryngol. 2008 Feb;37(1):23 -26.
  • Al-Qahtani M, Hagr Stapedectomy in tympanosclerosis, hearing results. Saudi Med J. 2008 May;29(5):760-2

2007

  • Hagr A, Alabdulhadi K. Sarcomatoid carcinoma of head and neck: a twenty-year experience. The Saudi Journal of Oto-Rhino-Laryngology Head and Neck Surgery.2007 9;1 7-10. Presented at Poliquin Medtronic Xomed Residents’ Competition. The 56th CSO-HNS Annual Meeting 2002
  • Hagr A, Bance M.Intracranial hemorrhage: a rare complication of cochlear implant. The Saudi Journal of Oto-Rhino-Laryngology Head and Neck Surgery.2007 9;1 27-29.
  • Hagr A, Blindness: a curable complication of acute sinusitis. The Saudi Journal of Oto-Rhino-Laryngology Head and Neck Surgery.2007 9;1 30-34.
  • Hagr Intra-parenchyma Pneumocephalus: a complication of cochlear implant. International Health Sciences Journal Vol. 1 No. 1 January 2007 (Muharram 1428 H)
  • Hagr . BAHA: Bone-Anchored Hearing Aid. International Health Sciences Journal Vol. 1 No. 1 January 2007 (Muharram 1428 H).

2006

  • Alfadda A, Hagr A, Al-Qahtani K, Tabah R. Radio-guided minimally invasive para-thyroidectomy under local anesthesia. West African Journal of Medicine. 2006 25;2 134-137. Presented at Annual meeting of Canaian Society of General surgery, 2000.

2005

  • Morris DP, Hagr Biofilm: why the sudden interest? J Otolaryngol. 2005 Aug;34 Suppl 2:S56-9.
  • Chacra ZA, Manoukian JJ, Al-Qahtani K, Al-Eisa M, Balys R, Hagr A, Tewfik TL, Schloss MD. Hydrogen peroxide mouth rinse: an analgesic post-tonsillectomy. J Otolaryngol. 2005 Jun;34(3):178 -82. Presented at the 57th CSO-HNS Annual Meeting 2003

2004

  • Hagr A, Funnell WR, Zeitouni A, Rappaport J.High-resolution X-Ray CT scanning of the human stapes footplate. The Journal of Otolaryngology 2004 Aug; 33(4): 217-221. Presented at Poliquin Medtronic Xomed Residents’ Competition. The 57th CSO-HNS Annual Meeting 2003.
  • Al-Sabah BH, Bin Salleen HM, Hagr AA, Manoukian J.J, Tewfik TL. Retropharyngeal Abscess in children: 10-Year Study. The Journal of Otolaryngology 2004 Dec; 33(6): 352-355. Presented at the 57th CSO-HNS Annual Meeting 2003
  • Mlynarek, Alex, Mark Tewfik, Abdulrahmab Hagr, John Manoukian, Melvin Schloss, Ted Tewfik, Jeanne Choi-Rosen. Lateral Neck X-ray vs. Direct Video Rhinoscopy in Assessing Adenoid Size. The Journal of Otolaryngology 2004 Dec; 33(6): 360-365. Presented at Poliquin Medtronic Xomed Residents’ Competition. The 57th CSO-HNS Annual Meeting 2003

2003

  • Hagr A, Kamal D, Tabah R.Pharyngeal perforation caused by blunt trauma to the neck. Can J Surg 2003 Feb;46(1):57-8
  • Nyquist GG, Hagr A, Sobol SE, Hier MP, Black MJ. Octreotide in the medical management of chyle fistula. Otolaryngol Head Neck Surg. 2003 Jun;128(6):910-1.
  • Mlynarek A, Hagr A, Kost K. Angiotensin-converting enzyme inhibitor-induced unilateral tongue angioedema. Otolaryngol Head Neck Surg. 2003 Nov;129(5):593-5.
  • Mlynarek A, Hagr A, Tewfik TL, Nguyen VH. Congenital mid-line cervical cleft: case report and review of literature. Int J Pediatr Otorhinolaryngol. 2003 Nov;67(11):1243-9. Presented at the 56th CSO-HNS Annual Meeting 2002

2002

  • Tewfik, T.L., Hagr, A: Choanal Atresia. In: Arlen Meyers (ed ), e.medicine Textbook of Otolaryngology and Facial Plastic Surgery. (http: www.emadicine.com)

2001

  • Hagr A, Laberge JM, Nguyen LT, Emil S, Bernard C, Patenaude Y. Laparoscopic excision of Sub-Diaphragmatic Epidermoid Cyst: A case report. J Pediatr Surg 2001 Jun;36(6): E8

Relevant Papers

Comparison of cochlear duct length between the Saudi and non-Saudi populations

Abstract

Background: There are no data on cochlear duct lengths (CDL) among Middle East populations

Objectives: The main aims of this study were to estimate the average CDL in the Saudi population and to compare it with the reported CDL in other regions/ethnic groups outside the Middle East.

Design: Retrospective study.

Setting: Tertiary otolaryngology head and neck surgery center.

Subjects and methods: Temporal bone CT scans were reviewed to determine CDL. We excluded any CT scan of an ear with a congenital inner ear anomaly or acquired pathology.

Main outcome measures: CDL.

Sample size: 441 temporal bone CT scans.

Results: The overall CDL mean was 31.9 mm (range 20.3-37.7 mm). The cochleae of males was significantly longer than of females and cochleae from the left side were significantly longer than of the right side. No significant difference was found between children and adults. Inter-study comparison revealed a significant difference in CDL between the Saudi population in our study and European and Australian studies, but not between the present study and North American studies.

Conclusions: The CDL differed significantly according to side of the cochlea and sex, but not by age. Geographically and ethnically, the mean CDL for Saudis was significantly different from the CDL of subjects of some ethnic backgrounds, but not others. Due to this diversity, we recommend that the CDL be measured before cochlear implant surgery.

Limitations: All the measurements were done by one person, and the subjects’ physical measurements, such as height or head circumference, were not included.

Conflict of interest: None.

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Cochlear Implantation at King Abdulaziz University Hospital, Riyadh, Saudi Arabia: a 12-year experience

Abstract

Objective: This paper aims to report our experience with different multichannel cochlear implant devices, and to discuss the outcomes of our cochlear implant programme, together with the problems encountered.

Setting: Cochlear implantation was undertaken in 117 patients (35 post-lingual and 82 pre-lingual cases; 70 males and 47 females) over a 12-year period. Three cochlear implant systems were used: Nucleus (22 and 24), Med-El and Advanced Bionics Clarion. An extended endaural incision was used in 78 cases and a minimally invasive approach in 39 cases.

Results: Complications occurred in 16.2 per cent of patients. All patients showed a significant post-implantation improvement in their perception and discrimination of sound and speech. Better results were noted in pre-lingual patients under the age of six years. The cause of hearing loss was unknown in 81 per cent of patients.

Conclusion: The outcomes of our cochlear implantation series are comparable to previous reports. The possibility of an abnormally rotated cochlea should be borne in mind when difficulty is encountered during cochleostomy.

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Complications of Post-Cochlear Implantation in 1027 Adults and Children

Abstract

Background: The number of cochlear implant (CI) recipients is increasing so there needs to be greater awareness of possible CI complications.Objectives: Describe complications of CI.

Design: Retrospective, descriptional.

Settings: Tertiary health care center.

Patients and methods: Data was collected by retrospective chart review on complications for recipients implanted for the period from January 2006 to June 2017.

Main outcome measures: Major and minor post cochlear implantation complications.

Sample size: 1027 cochlear implant recipients.

Results: Post-operative complications were reported in 105 patients (10.2%). Minor complications were most often encountered (9.5%). Swelling (wound seroma or hematoma) was the most common complication. The major complication rate was only 7/105, 0.7%. Meningitis did not occur and cholesteatoma occurred in only one patient.

Conclusion: CI is a safe surgical procedure at our center. We believe that this is probably due to the preoperative protocol, the surgical technique used, and the postoperative care conducted for all our patients. Despite this, it is important that both physicians and patients have knowledge of the possible consequences and risks posed by CI, especially in view of the fact that these patients require lifetime follow-up.

Limitations: Further studies are needed, and should include more ENT centers across all regions of Saudi Arabia.

Conflict of interest: None.

Conflict of interest statement

CONFLICT OF INTEREST: None.

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Relationship between Surgery under General Anesthesia and the Development of Dementia: A Systematic Review and Meta-Analysis

Abstract

Objective: To investigate the association between exposure to general anesthesia and the development of Alzheimer’s disease (AD) and dementia by reviewing and integrating the evidence from epidemiological studies published to date.

Methods: We searched MEDLINE, EMBASE, and Google Scholar to identify all relevant articles up to April 2018 reporting the risk of AD/dementia following exposure to general anesthesia and finally updated in February 2020. We included patients older than 60 or 65 years who had not been diagnosed with dementia or AD before the study period. The overall pooled effect size (ES) was evaluated with a random-effect model. Subgroup analyses were conducted and possibility of publication bias was assessed.

Results: A total of 23 studies with 412253 patients were included in our analysis. A statistically significant positive association between exposure to general anesthesia and the occurrence of AD was detected in the overall analysis (pooled ES = 1.11, 95%confidence interval = 1.07-1.15), but with substantial heterogeneity (p χ 2 < 0.001, I 2 = 79.4). Although the overall analysis revealed a significant association, the results of the subgroup analyses were inconsistent, and the possibility of publication bias was detected.

Conclusion: s. This meta-analysis demonstrated a significant positive association between general anesthesia and AD. However, considering other results, our meta-analysis must be interpreted with caution. Particularly, it should be considered that it was nearly impossible to discriminate the influence of general anesthesia from the effect of surgery itself on the development of AD. Further, large-scale studies devised to reduce the risk of bias are needed to elucidate the evidence of association between general anesthesia and AD. Trial registration. PROSPERO International prospective register of systematic reviews CRD42017073790.

Conflict of interest statement

The authors declare no conflicts of interest.

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Midline Facial Nerve Monitoring: Single-Center Experience and Review of Literature

Abstract

Background: Facial nerve monitoring system has enabled facial muscle activity detection using electrodes placed over the target muscles. In an effort to enable the best and minimally invasive surgical approach, a midline facial nerve monitor was applied during bilateral cochlear implantation surgical intervention in our center and the feasibility of placing midline facial nerve monitor electrodes during bilateral cochlear implantation operations was evaluated.

Methods: The medical records and operative notes of all patients who underwent bilateral cochlear implantation surgery between January 2017 and April 2018 in a quaternary care center were retrospectively reviewed and divided into 2 groups based on the facial nerve monitoring methods: facial nerve monitoring with the midline (midline facial nerve monitor) or bilateral (bilateral facial nerve monitor) electrode placements. Basic demographic information, comorbidities, and facial nerve status (pre- and postoperatively) were collected from patient electronic medical charts. The operative notes were reviewed for abnormal facial nerve findings, as well as for any reported difficulties with the identification or stimulation of facial nerve. The primary outcome was facial nerve identification postoperative function.

Results: Seventy-eight patients met our inclusion criteria. Midline facial nerve monitor was used in 49 patients and bilateral facial nerve monitor was used in 29 patients. No documented difficulty was identified at the step of facial nerve identification in either group, and none of the patients developed facial nerve weakness postoperatively.

Conclusion: Midline facial nerve monitor is a safe and reliable method that can be used in bilateral cochlear implantation surgeries and other surgeries requiring facial nerve monitoring.

Conflict of interest statement

Conflict of Interest: The authors have no conflict of interest to declare.

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