Publications by authors named "Michael Y Guo"

Introduction: The role for routine thymectomy in patients with secondary or tertiary hyperparathyroidism (SHPT, THPT) is unclear. We aim to compare rates of recurrence and complications in patients who underwent subtotal parathyroidectomy with and without thymectomy.

Methods: Patients who underwent surgery for renal HPT at a tertiary endocrine surgery center between 2010 and 2022 were reviewed.

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Introduction: This study investigated the separate impacts of diet and pre-operative antibiotics on gut microbiome and colonic anastomotic healing using a mouse model.

Methods: Male C57BL/6J mice were fed either low-fat-high-fibre (SD) or high-fat-low-fiber (WD) groups for 6 weeks, then further received either pre-operative antibiotics or a control sham before a colonic anastomotic procedure was performed. After 7 days, the anastomosis was assessed and microbiota composition and biodiversity were analyzed in anastomotic tissue and stool.

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Introduction: In many countries, there are waits for elective (planned) surgery. In these settings, processes for triaging patients are applied to determine how long patients wait for their surgery. There are very few instances that evaluate the effectiveness of surgical triage processes.

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: Surgical treatment of thyroid cancer has become less aggressive but for many patients, the threshold for performing total thyroidectomy (TT), as opposed to thyroid lobectomy (TL), has remained unclear. Current American Thyroid Association (ATA) guidelines encourage more individualization of treatment options, which necessitates explicit review of the pros and cons of the different options with patients.: This review focuses on the extent of surgery for treatment of intermediate-risk differentiated thyroid cancer, restricted to relevant literature available after publication of the 2015 ATA guidelines.

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Purpose: To examine whether there is a positive association between sexual dysfunction (SD) and different types of progestin-based contraceptives.

Methods: Nested case-control study in women of child-bearing age (15-45 years) from the IQVIA® Ambulatory electronic medical record database from 2008 to 2018. Cases defined by diagnosis of sexual dysfunction identified by international classification for disease clinical modification code 9th and 10th.

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The current body of evidence on the efficacy and safety of aflibercept for age-related macular degeneration (AMD) is steadily growing as large clinical trials and observational studies are continually completed. Our aim was to analyse 1-year visual acuity (VA) outcomes in response to aflibercept therapy and identify factors affecting treatment response using evidence generated from a pooled analysis of current studies. A literature review of multiple electronic databases (EMBASE, MEDLINE, MedMEME) revealed 12 studies meeting inclusion and exclusion criteria for statistical analysis.

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Background: Antidepressants are one of the most prescribed classes of medications. A number of case reports have linked these drugs to extrapyramidal symptoms (EPSs), but no large epidemiologic study to date has examined this association. We sought to quantify the association of EPSs with different antidepressants by undertaking a large pharmacoepidemiologic study.

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Background: Fluoroquinolone (FQ) prescription rates have increased over the last 10 years despite recent warnings of serious adverse effects such as peripheral neuropathy and tendinopathy. Currently, there are no published data on the extent or appropriateness of FQ prescribing in children.

Methods: Drug prescription data from the PharMetrics Plus health claims database (United States) were analyzed to examine dispensing of ciprofloxacin, levofloxacin, moxifloxacin, ofloxacin, or gemifloxacin to children from 2006 to 2015.

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Purpose: The clinical efficacy of ranibizumab has been examined by a large number of prospective and retrospective studies to date. This meta-analysis was conducted to summarize the current body of evidence on visual acuity (VA) changes with use of ranibizumab in the treatment of wet (neovascular) age-related macular degeneration (wAMD).

Methods: A literature review of multiple electronic databases (EMBASE, MEDLINE, MedMEME) was conducted to find randomized controlled trials (RCTs) and observational studies that reported changes in VA while patients with wAMD were on ranibizumab.

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Objectives: To determine the association between a diagnosis of sensorineural hearing loss (SNHL) and the prescription of a macrolide antibiotic.

Study Design: Retrospective nested case-control study.

Methods: From the LifeLink (IMS, Danbury, CT) health claims database, we randomly selected a cohort of subjects 15 to 60 years old from 2006 to 2014.

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