Kareem O. Tawfik
University of Cincinnati
Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by Kareem O. Tawfik.
Laryngoscope | 2015
Kareem O. Tawfik; Jeffrey J. Houlton; William Compton; Jun Ying; Siddarth M. Khosla
To determine risk factors for decannulation failure after laryngotracheal reconstruction performed at a single institution over a 10‐year period.
Otology & Neurotology | 2012
Maura Cosetti; Kareem O. Tawfik; Fouladvand M; John T. Roland; Anil K. Lalwani
Objective To describe and characterize diplopia resulting from skew deviation after cerebellopontine angle (CPA) surgery and labyrinthectomy. Patients and Interventions Retrospective case series of 4 patients who developed vertical diplopia from skew deviation after resection of tumors in the CPA or labyrinthectomy Main Outcome Measure Complete neuro-opthalmologic examination including opticokinetic testing, confrontational visual field assessment, color plate, pupillary reflex, slit lamp examination, and head tilt test. Results Four patients with residual hearing preoperatively developed skew deviation immediately after surgical intervention, including translabyrinthine (n = 1) and retrosigmoid (n = 2) approaches to the CPA and labyrinthectomy (n = 1). Neuro-ophthalmologic examination demonstrated intact extraocular movements, and 2- to 14-mm prism diopter hypertropia on both primary gaze and head tilt testing. In all cases, skew deviation resolved spontaneously with normalization of the neuro-ophthalmologic examination within 10 weeks. Conclusion Patients undergoing CPA surgery or labyrinthectomy can develop postoperative diplopia due to skew deviation as a consequence of acute vestibular deafferentation. Patients with significant hearing preoperatively, a probable marker for residual vestibular function, may be especially at risk for developing skew deviation postoperatively.
Otolaryngology-Head and Neck Surgery | 2017
Kareem O. Tawfik; Stacey L. Ishman; Mekibib Altaye; Jareen Meinzen-Derr; Daniel I. Choo
Objectives (1) Describe longitudinal trends in annual prevalence of hospital admission for pediatric acute otitis media (AOM) and complications of AOM (CAOM) since introduction of pneumococcal vaccination in 2000 and (2) describe the longitudinal trend of prevalence of hospital admission for pneumococcal meningitis in children with AOM-related diagnoses in the postvaccination era. Study Design Retrospective analysis of Kids’ Inpatient Database from 2000 to 2012. Setting Community, nonrehabilitation hospitals. Subjects and Methods To determine annual prevalence of admission for AOM/CAOM, nationally weighted frequencies of children aged <21 years with acute suppurative otitis media, acute mastoiditis, suppurative labyrinthitis, and/or acute petrositis were collected. The frequency of coexisting pneumococcal meningitis diagnoses among these patients was also collected. Trend analysis of prevalences of admission for AOM/CAOM and for pneumococcal meningitis occurring in the setting of AOM/CAOM from 2000 to 2012 was performed. Results Between 2000 and 2012, annual prevalence of admission for AOM/CAOM decreased from 3.956 to 2.618 per 100,000 persons (P < .0001) (relative risk reduction 34%). Declines in admission prevalence were most pronounced in children <1 year of age (from 22.647 to 8.715 per 100,000 persons between 2000 and 2012, P < .0001) and 1 to 2 years of age (from 13.652 to 5.554 per 100,000 persons between 2000 and 2012, P < .0001). For all ages, the admission prevalence for pneumococcal meningitis and concomitant AOM/CAOM decreased (from 1.760 to 0.717 per 1,000,000 persons, P < .0001) over the study period. Conclusions The prevalence of hospital admission for pediatric AOM/CAOM has declined since the advent of pneumococcal vaccination. Admission rates for pneumococcal meningitis with AOM/CAOM have similarly declined.
Annals of Otology, Rhinology, and Laryngology | 2016
Kareem O. Tawfik; Ahmad R. Sedaghat; Stacey L. Ishman
Objective: Increasingly, laryngomalacia and craniofacial anomalies are recognized as risk factors for obstructive sleep apnea. We sought to determine whether children with these diagnoses have become more likely to undergo inpatient polysomnogram (PSG) over time and to identify evolving trends in PSG utilization. Methods: Retrospective analysis of the Kids’ Inpatient Database from 2003 to 2012. Children <21 years who underwent PSG were included. Weighted comparisons of clinical/demographic characteristics of patients undergoing PSG were performed, as were associations between clinical and demographic patient characteristics and performance of inpatient PSG. Results: Between 2003 and 2012, PSG procedures decreased from 1266 to 829 (P < .001). Among children who underwent PSG, mean age decreased from 3.9 ± 5.1 to 3.1 ± 5.2 years (P = .001), and the frequency of age <1 year increased from 47.8% to 59.5% (P < .001). The frequency of laryngomalacia increased from 2.5% to 14.3% (P < .001), while the frequency of craniofacial anomalies increased from 6.2% to 19.4% (P < .001). Laryngomalacia and craniofacial anomalies were predictive of undergoing inpatient PSG in both timeframes. Conclusion: Despite decreasing PSG volumes, diagnoses of laryngomalacia and craniofacial anomalies comprised increasing fractions of children undergoing inpatient PSG between 2003 and 2012. Laryngomalacia and craniofacial anomalies were also predictive of inpatient PSG use in both timeframes.
Cochlear Implants International | 2016
Kareem O. Tawfik; Justin S. Golub; J. Thomas Roland; Ravi N. Samy
Objective and importance: Preoperative chronic otitis media (COM) is a risk factor for postoperative infection after cochlear implantation (CI), but its management varies by surgeon. Our case highlights a strategy for implant preservation in a patient with a history of recurrent cochlear implant infection. Clinical presentation: A 70-year-old woman with a history of chronic lymphocytic leukemia presented in 2005 with bilateral COM and sensorineural hearing loss meeting CI candidacy. Four months after left mastoid obliteration with abdominal fat graft and external auditory canal closure, a left CI was placed. Subsequent postauricular cellulitis resolved with oral antibiotics. A similar two-stage CI was performed on the right without complication. During the following year, numerous left-sided infections and fluid collections developed but were treated unsuccessfully with intravenous (IV) antibiotics and operative debridement. With concern for biofilm colonization, the implant was explanted and the electrode left in the cochlea. After reimplantation in 2010, infections resumed despite long-term IV antibiotics and incision and drainage. Intervention and technique: In 2012, the left mastoid cavity was exteriorized and converted to standard canal wall-down anatomy. Bone pâté was placed over the electrode, followed by cadaveric acellular dermis and a split-thickness skin graft. After more than 2 years, her better-performing CI remains infection-free. Conclusion: After 6 years of postoperative infections unresponsive to aggressive medical management, surgical interventions, and period of device removal, our patients infections resolved after mastoid exteriorization and multilayered protection of the electrode. This strategy may enable implant preservation in patients with recurrent post-CI infection in an obliterated cavity.
Laryngoscope | 2015
Kareem O. Tawfik; Charles M. Myer; Tasneem Shikary; Kenneth R. Goldschneider
Disinfection caps are increasingly being used to prevent catheter‐associated bloodstream infections. These devices, designed for continuous passive disinfection of catheter hubs, are typically small and often brightly colored. As such, they have the potential to become pediatric airway and esophageal foreign bodies. We report two patients who developed esophageal foreign body following ingestion of disinfection caps. Given the increasing use of these devices, it is imperative that health care providers be aware of this potential iatrogenic problem. We propose that the use of disinfection caps may not be appropriate in pediatric patients with risk factors for foreign body ingestion. Laryngoscope, 125:2820–2822, 2015
Laryngoscope | 2018
Kareem O. Tawfik; Stacey L. Ishman; Meredith E. Tabangin; Mekibib Altaye; Jareen Meinzen-Derr; Daniel I. Choo
The objective was to describe trends in the annual prevalence of hospitalization for pediatric acute mastoiditis since introduction of the 7‐valent pneumococcal vaccine in 2000 and the 13‐valent vaccine in 2010.
American Journal of Medical Genetics Part C-seminars in Medical Genetics | 2017
Daniel I. Choo; Kareem O. Tawfik; Donna M. Martin; Yehoash Raphael
The inner ear contains the sensory organs for hearing and balance. Both hearing and balance are commonly affected in individuals with CHARGE syndrome (CS), an autosomal dominant condition caused by heterozygous pathogenic variants in the CHD7 gene. Semicircular canal dysplasia or aplasia is the single most prevalent feature in individuals with CHARGE leading to deficient gross motor skills and ambulation. Identification of CHD7 as the major gene affected in CHARGE has enabled acceleration of research in this field. Great progress has been made in understanding the role of CHD7 in the development and function of the inner ear, as well as in related organs such as the middle ear and auditory and vestibular neural pathways. The goals of current research on CHD7 and CS are to (a) improve our understanding of the pathology caused by CHD7 pathogenic variants and (b) to provide better tools for prognosis and treatment. Current studies utilize cells and whole animals, from flies to mammals. The mouse is an excellent model for exploring mechanisms of Chd7 function in the ear, given the evolutionary conservation of ear structure, function, Chd7 expression, and similarity of mutant phenotypes between mice and humans. Newly recognized developmental functions for mouse Chd7 are shedding light on how abnormalities in CHD7 might lead to CS symptoms in humans. Here we review known human inner ear phenotypes associated with CHD7 pathogenic variants and CS, summarize progress toward diagnosis and treatment of inner ear‐related pathologies, and explore new avenues for treatment based on basic science discoveries.
Annals of Otology, Rhinology, and Laryngology | 2016
Kareem O. Tawfik; Colin R. Edwards; Blaise V. Jones; Charles M. Myer
Objective: We report an unusual case of masticator space foreign body in a patient presenting with otorrhea and granulation tissue within the external auditory canal (EAC). Methods: Case report. Results: A 16-month-old male presented with fever, unilateral otorrhea, facial swelling, leukocytosis, and granulation tissue within the EAC that failed to respond to conventional medical treatment. Computed tomography scan showed EAC and middle ear opacification and soft tissue swelling involving the masticator space. Given concerns for malignancy, biopsies of tissue within the EAC and of a newly detected right buccal mass were performed, revealing granulation tissue. Concern persisted for neoplasm, however, and magnetic resonance imaging was obtained, showing a masticator space foreign body and possible osteomyelitis of the mandible and pterygoid plates. The patient underwent urgent operative removal of a 3 cm crayon fragment from the masticator space and debridement of granulation tissue arising from a small defect at the inferior medial cartilaginous EAC. He likely sustained foreign body injury several weeks earlier upon falling from standing height while biting a crayon. Postoperatively, he was observed in hospital on intravenous antibiotics and improved significantly. He has since fully recovered. Conclusion: Masticator space foreign bodies may present with erosion and granulation tissue of the EAC.
Otolaryngology-Head and Neck Surgery | 2018
Paul D. Judge; David S. Haynes; Kareem O. Tawfik
Burnout is common among physicians. Chronic sources of burnout have been previously examined, but little is known about the impact of acute stressors on physician burnout. Otolaryngology residents applying for competitive fellowships provide a good example for how professional disappointment may cause burnout. As otolaryngology comprises highly successful, highly competitive individuals, a long history of success may leave otolaryngologists ill-equipped to cope with such failures. Otolaryngologists should be aware of such pitfalls, preparing appropriate coping mechanisms in cases of professional disappointment.