8 results on '"Ashok R. Jethwa"'
Search Results
2. Cricotracheal resection for adult subglottic stenosis: Factors predicting treatment failure
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Carsten E. Palme, Shaf Keshavjee, Ralph W. Gilbert, Patrick J. Gullane, Andrew Pierre, Antti Mäkitie, David P. Goldstein, Ashok R. Jethwa, Wael Hasan, Osvaldo Espin-Garcia, HUS Head and Neck Center, Department of Ophthalmology and Otorhinolaryngology, Korva-, nenä- ja kurkkutautien klinikka, Helsinki University Hospital Area, and Clinicum
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Adult ,Male ,Reoperation ,medicine.medical_specialty ,Glottis ,Time Factors ,Subglottic stenosis ,Thyroid Gland ,Laryngectomy ,Anastomosis ,LARYNX ,Treatment failure ,Catheterization ,Cricoid Cartilage ,03 medical and health sciences ,0302 clinical medicine ,Postoperative Complications ,Tracheostomy ,Restenosis ,Recurrence ,Medicine ,Humans ,PARTIAL CRICOID RESECTION ,Adult subglottic stenosis ,3125 Otorhinolaryngology, ophthalmology ,Treatment Failure ,10. No inequality ,030223 otorhinolaryngology ,Retrospective Studies ,cricotracheal resection ,Cricotracheal resection ,business.industry ,Anastomosis, Surgical ,prognostic factors ,Retrospective cohort study ,Laryngostenosis ,Odds ratio ,Middle Aged ,medicine.disease ,3. Good health ,Surgery ,Trachea ,Stenosis ,Otorhinolaryngology ,030220 oncology & carcinogenesis ,LARYNGOTRACHEAL RECONSTRUCTION ,Female ,business ,Tracheal Stenosis - Abstract
OBJECTIVES/HYPOTHESIS Identify predictors of decannulation failure after cricotracheal resection (CTR) and thyrotracheal anastomosis (TTA) in patients with subglottic stenosis (SGS). STUDY DESIGN Retrospective cohort study. METHODS Charts of patients undergoing CTR and TTA for SGS at the University Health Network, Toronto, Ontario, Canada between 1988 and 2017 were reviewed. Patient, pathology, treatment, and outcome data were collected. The end points for statistical analysis were development of restenosis and permanent tracheostomy. RESULTS One hundred fourteen patients (n = 114) were eligible for inclusion in this review. The mean age at primary resection was 46.9 years, 95 (83%) were females, and 19 (17%) were males. The rate of restenosis and permanent tracheostomy was 13% and 5%, respectively. Sixty-two patients (54%) underwent a CTR and TTA, and 52 patients (46%) underwent a CTR, laryngofissure, and TTA. Traumatic stenosis (odds ratio [OR] = 10.3, P = .017), longer T-tube duration (OR = 1.2, P = .011), combined glottic/subglottic stenosis (OR = 10.47, P = .010), start of the stenosis at the vocal cords (OR = 6.6, P = .029), postoperative minor complications (OR = 13.6, P = .028), and need for repeat surgery (OR = 44.1, P
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- 2019
3. Randomized Controlled Pilot Study of Video Self-assessment for Resident Mastoidectomy Training
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Samuel C. Levine, Ashok R. Jethwa, Bevan Yueh, Christopher J. Perdoni, Meredith E. Adams, and Elizabeth A. Kelly
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Self-assessment ,medicine.medical_specialty ,mastoidectomy ,medicine.medical_treatment ,lcsh:Surgery ,Mastoidectomy ,video ,otology ,03 medical and health sciences ,0302 clinical medicine ,Otology ,medicine ,030212 general & internal medicine ,Competence (human resources) ,business.industry ,Resident education ,lcsh:RD1-811 ,Assessment scale ,Short Scientific Communication ,simulation ,self-assessment ,lcsh:Otorhinolaryngology ,lcsh:RF1-547 ,Inter-rater reliability ,Otorhinolaryngology ,neurotology ,030220 oncology & carcinogenesis ,technology ,Physical therapy ,Surgery ,business ,resident education - Abstract
A prospective randomized controlled pilot study was performed to determine if video self-assessment improves competency in mastoidectomy and to assess interrater agreement between expert and resident evaluations of recorded mastoidectomy. Sixteen otolaryngology residents were recorded while performing cadaveric mastoidectomy and randomized into video self-assessment and control groups. All residents performed a second recorded mastoidectomy. Performance was evaluated by blinded experts with a validated assessment scale. Video self-assessment did not lead to greater skill improvement between the first and second mastoidectomy. Interrater agreement was fair to substantial between the expert evaluators and between resident self-evaluations by recall and video review. Agreement between experts and residents was only slight to fair; residents consistently rated their performance higher than experts ( P < .05). In conclusion, 1 session of video self-review did not lead to improved competence in mastoidectomy over standard practice. While experts agree on assessments, residents may overestimate their competency in performing cadaveric mastoidectomy.
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- 2018
4. Sensitivity, Specificity, and Posttest Probability of Parotid Fine‐Needle Aspiration
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C. Carrie Liu, Samir S. Khariwala, Jennifer J. Shin, Jonas T. Johnson, and Ashok R. Jethwa
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medicine.medical_specialty ,Biopsy, Fine-Needle ,Logistic regression ,Malignancy ,Sensitivity and Specificity ,Article ,Diagnosis, Differential ,03 medical and health sciences ,0302 clinical medicine ,Humans ,Parotid Gland ,Medicine ,030223 otorhinolaryngology ,medicine.diagnostic_test ,business.industry ,Nomogram ,medicine.disease ,Parotid Neoplasms ,Surgery ,Parotid gland ,medicine.anatomical_structure ,Fine-needle aspiration ,Otorhinolaryngology ,030220 oncology & carcinogenesis ,Meta-analysis ,Parotid Diseases ,Radiology ,Differential diagnosis ,business - Abstract
(1) To analyze the sensitivity and specificity of fine-needle aspiration (FNA) in distinguishing benign from malignant parotid disease. (2) To determine the anticipated posttest probability of malignancy and probability of nondiagnostic and indeterminate cytology with parotid FNA.Independently corroborated computerized searches of PubMed, Embase, and Cochrane Central Register were performed. These were supplemented with manual searches and input from content experts.Inclusion/exclusion criteria specified diagnosis of parotid mass, intervention with both FNA and surgical excision, and enumeration of both cytologic and surgical histopathologic results. The primary outcomes were sensitivity, specificity, and posttest probability of malignancy. Heterogeneity was evaluated with the I(2) statistic. Meta-analysis was performed via a 2-level mixed logistic regression model. Bayesian nomograms were plotted via pooled likelihood ratios.The systematic review yielded 70 criterion-meeting studies, 63 of which contained data that allowed for computation of numerical outcomes (n = 5647 patients; level 2a) and consideration of meta-analysis. Subgroup analyses were performed in studies that were prospective, involved consecutive patients, described the FNA technique utilized, and used ultrasound guidance. The I(2) point estimate was70% for all analyses, except within prospectively obtained and ultrasound-guided results. Among the prospective subgroup, the pooled analysis demonstrated a sensitivity of 0.882 (95% confidence interval [95% CI], 0.509-0.982) and a specificity of 0.995 (95% CI, 0.960-0.999). The probabilities of nondiagnostic and indeterminate cytology were 0.053 (95% CI, 0.030-0.075) and 0.147 (95% CI, 0.106-0.188), respectively.FNA has moderate sensitivity and high specificity in differentiating malignant from benign parotid lesions. Considerable heterogeneity is present among studies.
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- 2015
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5. Navigation-guided osteotomies improve margin delineation in tumors involving the sinonasal area: A preclinical study
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Piero Nicolai, Axel Sahovaler, Catriona M. Douglas, Ashok R. Jethwa, Ralph W. Gilbert, Marco Ferrari, Wael Hasan, Harley H.L. Chan, Jonathan C. Irish, Stefano Taboni, Michael J. Daly, Jimmy Qiu, Carissa M. Thomas, and Alberto Deganello
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Male ,Cancer Research ,medicine.medical_specialty ,Cone beam computed tomography ,Sinonasal cancer ,03 medical and health sciences ,0302 clinical medicine ,Margin (machine learning) ,Paranasal Sinuses ,Humans ,Medicine ,030223 otorhinolaryngology ,Margin ,business.industry ,Open surgery ,Margins of Excision ,Maxillectomy ,Navigation ,Osteotomy ,Oncology ,030220 oncology & carcinogenesis ,Female ,Radiology ,Oral Surgery ,business ,Tumor segmentation - Abstract
Objectives To demonstrate and quantify, in a preclinical setting, the benefit of three-dimensional (3D) navigation guidance for margin delineation during ablative open surgery for advanced sinonasal cancer. Materials and methods Seven tumor models were created. 3D images were acquired with cone beam computed tomography, and 3D tumor segmentations were contoured. Eight surgeons with variable experience were recruited for the simulation of osteotomies. Three simulations were performed: 1) Unguided, 2) Guided using real-time tool tracking with 3D tumor segmentation (tumor-guided), and 3) Guided by 3D visualization of both the tumor and 1-cm margin segmentations (margin-guided). Analysis of cutting planes was performed and distance from the tumor surface was classified as follows: “intratumoral” when 0 mm or negative, “close” when greater than 0 mm and less than or equal to 5 mm, “adequate” when greater than 5 mm and less than or equal to 15 mm, and “excessive” over 15 mm. The three techniques (unguided, tumor-guided, margin-guided) were statistically compared. Results The use of 3D navigation for margin delineation significantly improved control of margins: unguided cuts had 18.1% intratumoral cuts compared to 0% intratumoral cuts with 3D navigation (p Conclusion This preclinical study has demonstrated the significant benefit of navigation-guided osteotomies for sinonasal tumors. Translation into the clinical setting – with rigorous assessment of oncological outcomes – would be the proposed next step.
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- 2019
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6. What is the preferred perioperative antibiotic choice and duration of use following major head and neck surgery?
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Samir S. Khariwala and Ashok R. Jethwa
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medicine.medical_specialty ,medicine.drug_class ,Antibiotics ,Perioperative Care ,03 medical and health sciences ,0302 clinical medicine ,Postoperative Complications ,medicine ,Humans ,Antibiotic prophylaxis ,030223 otorhinolaryngology ,business.industry ,Perioperative ,Antibiotic Prophylaxis ,Surgery ,Otorhinolaryngology ,Sulbactam ,030220 oncology & carcinogenesis ,Anesthesia ,Surgical Procedures, Operative ,Perioperative care ,Practice Guidelines as Topic ,Head and neck surgery ,Ampicillin ,business ,Head ,Neck - Published
- 2016
7. When should therapeutic anticoagulation be restarted following major head and neck surgery?
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Ashok R. Jethwa and Samir S. Khariwala
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03 medical and health sciences ,medicine.medical_specialty ,0302 clinical medicine ,Otorhinolaryngology ,business.industry ,Head and neck surgery ,medicine ,030204 cardiovascular system & hematology ,030223 otorhinolaryngology ,business ,Surgery - Published
- 2017
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8. Novel technique to diagnose parotid duct injuries at the bedside using fluorescein
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Rick M. Odland, David T. Montag, and Ashok R. Jethwa
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Novel technique ,Pathology ,medicine.medical_specialty ,business.industry ,General Medicine ,Parotid duct ,Parotid gland ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,medicine.anatomical_structure ,chemistry ,030221 ophthalmology & optometry ,Emergency Medicine ,medicine ,Salivary Ducts ,Fluorescein ,030223 otorhinolaryngology ,business - Published
- 2016
- Full Text
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