Publications by authors named "Timothy Shim"

Article Synopsis
  • The systematic review aimed to investigate the incidence, risk factors, and outcomes of toxic shock syndrome (TSS) following endoscopic sinus surgery (ESS) and septoplasty, based on data from various medical databases.
  • The review included findings from 25 studies and identified 70 TSS cases over 38 years, indicating an extremely low incidence rate of 0.0003 (or about 30 cases per 100,000 people) related to these surgeries.
  • Despite the occurrence of TSS in patients with or without nasal packing, nearly all patients (97%) recovered fully, highlighting the need for further research to identify high-risk individuals.
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Purpose: Office-based procedures in otolaryngology are increasingly utilized to increase efficiency, reduce cost, and eliminate risks associated with surgery. Gland-preserving surgical management of sialadenitis and sialolithiasis are often performed in the operating room, although many surgeons are moving this practice to clinic. We aim to determine the difference in patient charges and perioperative outcomes for salivary gland procedures performed in the clinic versus the OR.

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Background: Limited retrospective data exist on malignant pineal parenchymal tumors (PPTs) in adults, and there are no large previous studies that review clinical outcomes across the 3 treatment arms of surgery, radiotherapy, and chemotherapy. As a result, optimal disease management has yet to be defined.

Objective: To evaluate treatment trends and perform survival analysis in adult PPT.

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Objectives/hypothesis: To understand the effect of the COVID-19 pandemic on the volume, quality, and impact of otolaryngology publications.

Study Design: Retrospective analysis.

Methods: Fifteen of the top peer-reviewed otolaryngology journals were queried on PubMed for COVID and non-COVID-related articles from April 1, 2020 to March 31, 2021 (pandemic period) and pre-COVID articles from the year prior.

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Objectives: We aim to evaluate the utility of the Round Window Angle (RWA) as a predictor of difficulty and operative time in cochlear implantation.

Methods: A retrospective study of pediatric patients that underwent cochlear implantation and CT temporal bone imaging from January 2008 to November 2019. Correlation, univariate, and multivariate analysis were conducted.

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Background: Head and neck osteosarcoma (HNOS) is a rare primary bone tumor with limited data to guide treatment approaches.

Methods: The NCDB was used to identify patients diagnosed with HNOS. Kaplan-Meier and Cox multivariate regression were used to examine the impact of each treatment on overall survival (OS).

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Objectives: To characterize patterns of sensorineural hearing loss (SNHL) and tinnitus in patients with idiopathic intracranial hypertension (IIH).

Study Design: Retrospective chart review.

Setting: Tertiary referral center.

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Objectives: To assess a middle ear simulator as a surgical training tool among a cohort of novice trainees.

Study Design: Prospective pilot study.

Setting: The George Washington University Hospital (tertiary care academic hospital).

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The aim of this study is to evaluate the impact of transoral robotic surgery (TORS) compared to nonrobotic surgery (NRS) on overall survival in oropharyngeal squamous cell carcinoma (OPSCC). We performed a retrospective study of patients with HPV+ and HPV- OPSCC undergoing TORS or NRS with neck dissection using the National Cancer Database from the years 2010-2016. Among patients with OPSCC in our cohort, 3167 (58.

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Importance: Adequate sampling of the nasopharynx is crucial to performing accurate SARS-CoV-2 (COVID) testing. Formalized education of nasal anatomy may improve provider testing technique and reduce false-negative test results.

Objective: To assess the effect of nasal anatomy education on medical providers' comfort level and knowledge base in performing accurate SARS-CoV-2 (COVID) testing.

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Objectives: To determine the prevalence of Sensorineural Hearing Loss (SNHL) attributable to Sickle Cell Disease (SCD) in the global pediatric population and to identify factors contributing to its severity.

Study Design: Meta-analysis.

Methods: We performed a comprehensive literature search for scientific articles in PubMed, Scopus, CINAHL, Web of Science, and the Cochrane Library that reported the incidence of hearing loss in populations under 18 years of age with excluding studies analyzing patients on iron chelation therapy, adults, or those without objective audiological analysis.

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Introduction: Rhabdomyosarcoma (RMS) is the most common soft tissue head and neck sarcoma in children. Stringent analysis of survival data is imperative to optimize treatment.

Methods: The National Cancer Database (NCDB, 2004-2016) and the Surveillance, Epidemiology, and End Results Program (SEER, 1975-2016) were queried for patients ages 0-19 with RMS of the head and neck.

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Objectives And Main Outcome Measures: To determine the prevalence of sensorineural hearing loss (SNHL) attributable to sickle cell disease (SCD) in the global adult population and to identify factors contributing to its severity.

Study Design: Systematic Review and Meta-analysis.

Methods: We performed a comprehensive literature search for scientific articles in PubMed, Scopus, CINAHL, Web of Science, and the Cochrane Library that reported the incidence of hearing loss in populations over 18 years of age with SCD.

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Objectives: To determine the historical origins of the usage of the salt restriction diet as an intervention for Menière's disease (MD).

Methods: Articles on MD and salt restriction were identified using Pubmed and Google scholar. Original manuscripts from 19th and 20th century as well as selected otological textbooks in English, German, and French were also reviewed.

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Background: Recently, a superthin "pure skin perforator" flap without any subcutaneous tissue was proposed, but the vascularity is still unclear. The authors therefore investigated the vascularity of the proposed superficial circumflex iliac artery-pure skin perforator along with its clinical applications and findings on indocyanine green imaging.

Methods: The locations and dimension of 70 pure skin perforators on 40 flaps were investigated and classified into central-peripheral and mediolateral parts.

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Background: Supermicrosurgical lymphaticovenular anastomosis (LVA) is becoming a treatment option for progressive lymphedema. Various types of LVA such as end-to-end, end-to-side, side-to-end, and side-to-side are performed to improve the treatment efficacy.

Methods: We applied sequential anastomosis for LVA surgery, in which 2 lymphatic vessels were anastomosed to 1 venule using side-to-side and side-to-end anastomoses.

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Background: Lymphaticovenular anastomosis (LVA) is a useful treatment for compression-refractory lymphedema with its effectiveness and minimal invasiveness. However, LVA requires supermicrosurgery, where lymphatic vessels with a diameter of 0.5 mm or smaller are anastomosed using 11-0 or 12-0 suture.

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Background: For women with congenital uterine infertility, or for those who have undergone hysterectomy, uterine transplantation is one of the potential treatments to regain fertility. In this study, we utilized a primate model of uterine transplantation, and evaluated the patency of our microsurgical anastomoses, and the perfusion of the transplanted uterus.

Methods: Two female cynomolgus monkeys underwent surgery.

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Objective: This is the first paper to report the measurement of blood glucose in flaps to detect early flap congestion and flap salvage following immediate flap exploration.

Methods: We performed blood glucose measurement in a superficial circumflex iliac artery perforator flap and an anterolateral thigh flap postoperatively using Medisafe-Mini (Terumo, Japan), a regular capillary blood glucose-monitoring device.

Results: The blood glucose measurements were low when in early venous thrombosis.

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Introduction: This study aims to evaluate the outcome and safety of the deep inferior epigastric perforator (DIEP) flap for breast reconstruction in a group of Southeast Asian women treated in our unit and to identify risk factors for breast reconstruction using the DIEP flap in this population.

Materials And Methods: This is a prospective study on 50 consecutive DIEP flap breast reconstructions by a single surgeon in an academic institution between July 1999 and July 2006. Data on patient demographics, diagnosis, procedure type, adjuvant and neoadjuvant treatments, risk factors and complications were prospectively collected and registered in a clinical database.

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Introduction: Lymphaticovenular anastomosis (LVA) has been described as a treatment of chronic lymphoedema. This microsurgical technique is new and technically difficult. The small caliber and thin wall lymphatic vessels are difficult to identify and easily destroyed during the dissection.

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Introduction: In developed countries, the majority of vesicovaginal fistulas develop after gynaecologic surgery, with abdominal hysterectomy accounting for 90% of cases. Several techniques are available for repairing the fistulas. Abdominal approaches give good results even for difficult posterior located fistulas, but are associated with increased morbidity compared with the transvaginal approach.

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