Publications by authors named "Gustavo Fernandez-Ranvier"

New York City was the epicenter of the initial surge of the COVID-19 pandemic in the United States. Tracheostomy is a critical procedure in the care of patients with COVID-19. We hypothesized that early tracheostomy would decrease the length of time on sedation, time on mechanical ventilation, intensive care unit length of stay, and mortality.

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Background: Machine learning has been increasingly used to develop algorithms that can improve medical diagnostics and prognostication and has shown promise in improving the classification of thyroid ultrasound images. This proof-of-concept study aims to develop a multimodal machine-learning model to classify follicular carcinoma from adenoma.

Methods: This is a retrospective study of patients with follicular adenoma or carcinoma at a single institution between 2010 and 2022.

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Introduction: We performed Thyroseq v2 molecular testing on indeterminate thyroid nodules and evaluated whether they underwent a management change from the standard of thyroid lobectomy.

Methods: We conducted a retrospective analysis of all indeterminate thyroid nodules that underwent Thyroseq v2 molecular testing from 2014 to 2019 at a large academic center. Pathology was reviewed by thyroid cytopathologists.

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Introduction: Trans Oral Endoscopic Thyroidectomy through Vestibular Approach (TOETVA) allows access to the thyroid with the best cosmetic results as there are no visible scars.

Methods: Here we present a prospective observational study of 53 patients which underwent TOETVA from July 2017 to June 2021.

Results: Fifty-two cases (98.

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Neoplasms that secrete ectopic adrenocorticotropin (ACTH) may cause severe, life-threatening hypercortisolism. These tumors are often difficult to localize and treat, requiring a comprehensive and systematic management plan orchestrated by a multidisciplinary team. The Mount Sinai Adrenal Center hosted an interdisciplinary retreat of experts in adrenal disorders and neuroendocrine tumors (NETs) with the aim of developing a clinical pathway for the management of Cushing syndrome due to ectopic ACTH production.

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Article Synopsis
  • The study evaluates the effectiveness of surgeon-performed office ultrasound (OU) and preincision ultrasound (PIU) for locating parathyroid adenomas in patients with primary hyperparathyroidism (PHPT) before surgery.
  • A review of 348 patients showed higher sensitivity and specificity for PIU compared to OU, with PIU performing similarly to more advanced imaging techniques like 4D CT and Tc-sestamibi scintigraphy.
  • The findings suggest that while OU and PIU are effective for detecting single lesions, their effectiveness decreases for cases with multiple lesions, though PIU remains a useful tool when used alongside other imaging methods.
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Background: Transoral Endoscopic Thyroidectomy Vestibular Approach (TOETVA) is a natural orifice transluminal endoscopic surgery that offers a truly scarless approach to thyroidectomy. Introduced in 2008, there is a growing body of literature establishing it as a safe endoscopic approach for thyroid procedures. While it is not yet widely practiced, it is quickly growing in popularity.

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Human insulinomas are rare, benign, slowly proliferating, insulin-producing beta cell tumors that provide a molecular "recipe" or "roadmap" for pathways that control human beta cell regeneration. An earlier study revealed abnormal methylation in the imprinted p15.5-p15.

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Laparoscopic sleeve gastrectomy (LSG) is the most commonly performed bariatric procedure in the United States. Postoperative migration of the stomach into the chest is a rare complication of this procedure. In this study, we present a compilation of acute and chronic intrathoracic sleeve migrations (ITSMs) after LSG and present possible underlying mechanisms of this complication, as described in the literature.

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. Transoral endoscopic thyroidectomy vestibular approach (TOETVA) has evolved from a novel procedure to a cosmetically appealing alternative to the traditional open thyroidectomy. TOETVA is limited to only high-volume centers with the hope to expand and demonstrate the safety, reproducibility, and application for the correct patient with thyroid disease.

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Surgical approaches to thyroidectomies have undergone a rapid evolution over the past three decades. Transoral endoscopic thyroidectomy vestibular approach (TOETVA) is currently the latest remote access procedure for the treatment of benign and malignant thyroid disease. The purpose of this article is to present the results of TOETVA from five different international institutions.

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Background: Remote-access thyroid surgery has gained popularity and has advanced significantly over the past two decades, given the patient desire to avoid cosmetically displeasing scarring. It has only been recently that natural-orifice transluminal endoscopic surgery (NOTES) techniques have been geared for thyroidectomies. The transoral endoscopic thyroidectomy vestibular approach has been categorized as a NOTES procedure-given the approach to the thyroid gland via incisions in the oral cavity.

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Introduction: There has been a recent increased interest in the use of non-steroidal anti-inflammatory drugs (NSAIDs) such as ketorolac for post-operative pain management to minimize opioid use and decrease hospital length of stay (LOS). Although NSAID use has been controversial following bariatric surgery due to anecdotal concerns for increased gastric bleeding, the impact of ketorolac as an adjunct to opioids needs further investigation on LOS and post-operative complications like bleeding.

Objective: This study aims to evaluate the impact of post-operative ketorolac use on opioid consumption, LOS, and bleeding risk after bariatric surgery.

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Background: Type 2 diabetes (T2D), obstructive sleep apnea (OSA), hypertension (HTN), and hyperlipidemia (HLD) are common co-morbidities that are strongly associated with obesity.

Objective: The purpose of this study was to compare the rate of obesity-related co-morbidity remission and percent total body weight loss of super-obese patients with a body mass index (BMI) ≥50 kg/m with bariatric patients who have a BMI of 30 to 49.9 kg/m.

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Adrenocortical carcinoma (ACC) is a rare malignancy associated with poor prognosis despite available treatments. In patients with localized or locally advanced disease, complete resection with negative margins offers the only potential for cure. Unfortunately, most patients develop local and distant recurrence following initial resection highlighting the importance of meticulous surgical technique in the hands of an experienced surgeon.

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Background: Obesity not only increases the chances of developing diabetes-one of the top causes of death in the United States-but it also results in further medical complications.

Objective: To compare the 6-month and 1-year postoperative remission rates of type 2 diabetic (T2D) patients after bariatric surgery based on preoperative glycosylated hemoglobin (A1C) stratification and pharmacologic therapy: insulin-dependent diabetic (IDD) versus noninsulin-dependent diabetic (NIDD).

Setting: Academic hospital, United States.

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Background: Obstructive sleep apnea (OSA) is a serious obesity-associated disorder that causes significant short- and long-term medical consequences.

Objective: The objective of this study is to compare the 6-month and 1-year postoperative symptomatic OSA remission rates of patients undergoing bariatric surgery based on their preoperative body mass index (BMI) stratification, type of bariatric operation-sleeve gastrectomy (SG) or Roux-en-Y gastric bypass (RYGB)-and OSA severity.

Methods: We retrospectively analyzed 297 obese patients with a diagnosis of OSA who had undergone either SG or RYGB between 2011 and 2015.

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Background: During the past decade, laparoscopic adjustable gastric banding (LAGB) was one of the most popular surgical procedures in treating morbid obesity. Long-term effects, specifically on esophageal motility, of LAGB have not been well described in the literature despite the high prevalence of reoperations and post-operative dysphagia. We aimed to characterize esophageal dysmotility after long-term follow-up using data of high-resolution esophageal manometry (HRM) performed in patients who presented for LAGB removal.

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Although diabetes results in part from a deficiency of normal pancreatic beta cells, inducing human beta cells to regenerate is difficult. Reasoning that insulinomas hold the "genomic recipe" for beta cell expansion, we surveyed 38 human insulinomas to obtain insights into therapeutic pathways for beta cell regeneration. An integrative analysis of whole-exome and RNA-sequencing data was employed to extensively characterize the genomic and molecular landscape of insulinomas relative to normal beta cells.

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Background: Transoral endoscopic thyroidectomy by a vestibular approach (TOETVA) is a novel technique for thyroid gland excision. Compared to the transaxillary endoscopic and bilateral axillo-breast approaches, which require substantial dissection to reach the thyroid gland, TOETVA provides the most direct access to the target organ.

Methods: The aim of this video is to provide a step-by-step overview of TOETVA and demonstrate how to set up and utilize intraoperative nerve monitoring.

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Surgical resection remains the treatment of choice for primary pancreatic neuroendocrine tumors (PNETs), because it is associated with increased survival. Minimally invasive procedures are a safe modality for the surgical treatment of PNETs. In malignant PNETs, laparoscopy is not associated with a compromise in terms of oncologic resection, and provides the benefits of decreased postoperative pain, better cosmetic results, shorter hospital stay, and a shorter postoperative recovery period.

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Article Synopsis
  • Bullet embolism is a rare but serious problem that can happen when a bullet gets stuck in a blood vessel after an injury, causing big health risks.
  • In one case, a patient had a bullet travel from their leg vein to their lung artery, and doctors decided to just watch him instead of doing surgery.
  • When someone has injuries with more entry wounds than exit wounds, doctors should check for bullet embolism; if they're not showing any symptoms, it might be safe to just monitor them.
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Context: Parathyroid carcinoma is a rare but ominous cause of primary hyperparathyroidism. OBJECTIVES AND MAIN OUTCOME MEASURES: The objective of the study was to review the outcomes of parathyroid cancer patients and to evaluate the factors associated with mortality.

Design, Setting, And Patients: This was a retrospective review performed on 37 patients with parathyroid cancer treated at a single university tertiary care center between 1966 and 2009.

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