Publications by authors named "Clara Zhu"

Objective: This study aimed to determine whether lower extremity fracture fixation technique and timing (≤24 vs. >24 hours) impact neurologic outcomes in TBI patients.

Methods: A prospective observational study was conducted across 30 trauma centers.

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Purpose: Treatment of invasive rectal adenocarcinoma is stratified into upfront surgery versus neoadjuvant chemoradiotherapy, in part, based on tumor distance from the anal verge (AV). This study examines the correlation between tumor distance measurements (endoscopic and MRI) and relationship to the anterior peritoneal reflection (aPR) on MRI.

Methods: A single-center retrospective study was performed at a tertiary center accredited by the National Accreditation Program for Rectal Cancer (NAPRC).

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Background: Epigenetic dysregulation is an integral step in the progression of pancreatic neuroendocrine tumors. We hypothesized that tumor suppressor repression by DNA methyltransferase 1 in pancreatic neuroendocrine tumors could be targeted with epigenetic treatment.

Methods: Resected pancreatic neuroendocrine tumors from 32 patients were stained for DNA methyltransferase 1 and scored.

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Article Synopsis
  • The study investigates the impact of hospital type on treatment and survival outcomes for patients with gastric neuroendocrine tumors (gNETs), highlighting a potential advantage of academic centers.
  • Data from the National Cancer Database (NCDB) for patients treated between 2004 and 2016 shows that those at academic institutions had significantly better median survival rates compared to community programs.
  • After adjusting for various factors, it was found that patients receiving treatment at academic hospitals, especially those undergoing surgery and chemotherapy, had better overall survival outcomes.
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Introduction: The current treatment paradigm of abdominal aortic aneurysms (AAA) focuses on observing patients until their disease reaches certain thresholds for intervention, with no preceding treatment available. There is an opportunity to develop novel therapies to prevent further aneurysmal growth and decrease the risk of a highly morbid rupture. We used a porcine model of aortic dilation to assess the ability of human adipose-derived mesenchymal stem cells (MSCs) to attenuate aortic dilation.

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Introduction: In South Africa, district hospitals have limited surgical capacity, and most surgical conditions are referred to higher-level facilities for definitive management. This study aims to identify the proportion, type, and volume of district-level general surgery referrals to two regional government hospitals in South Africa.

Materials And Methods: This was a retrospective analysis of secondary data collected on persons who underwent general surgery operations at two South African regional hospitals between January 1, 2016 and December 31, 2018.

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Background: The field of cardiothoracic surgery has been striving to increase its gender and racial diversity. We sought to examine changes in gender and racial diversity in cardiothoracic fellowships and integrated residencies in the past decade.

Methods: Accreditation Council for Graduate Medical Education data were obtained from 2011 to 2019.

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SignificanceIn a polymicrobial battlefield where different species compete for nutrients and colonization niches, antimicrobial compounds are the sword and shield of commensal microbes in competition with invading pathogens and each other. The identification of an -produced genotoxin, colibactin, and its specific targeted killing of enteric pathogens and commensals, including and , sheds light on our understanding of intermicrobial interactions in the mammalian gut. Our findings elucidate the mechanisms through which genotoxins shape microbial communities and provide a platform for probing the larger role of enteric multibacterial interactions regarding infection and disease outcomes.

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Introduction: The 2014 Medicaid expansion was intended to improve access to care. We hypothesized that Medicaid expansion would be associated with improved gastric cancer (GC) outcomes.

Methods: We selected patients with a new primary diagnosis of GC from the National Cancer Database.

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Background: Anastomotic strictures represent a major source of morbidity in colorectal surgery with an incidence reported up to 30%. Despite this, the mechanism by which strictures develop remains unclear. This study aims to determine the incidence of colorectal anastomotic strictures and associated risk factors among a series of diverted patients.

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Background: In advanced malignant bowel obstruction, decompressive gastrostomy tubes (GTs) may not be feasible due to ascites, peritoneal carcinomatosis, and altered gastric anatomy. Whereas nasogastric tubes (NGTs) allow temporary decompression, percutaneous transesophageal gastrostomy tubes (PTEGs) are an alternative method for long-term palliative decompression. This study performed a scoping review to determine outcomes with PTEG in advanced malignancies.

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Peri-prosthetic joint infection (PJI) is a debilitating and costly complication of joint replacement. Synovial fluid cultures are negative in up to 25% of PJI cases. The purpose of this study was to compare the clinical characteristics and outcomes of culture negative and culture positive PJI.

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Background: Perforated gastric ulcers are surgical emergencies with paucity of data on the preferred treatment modality of resection versus omental patch. We aim to compare outcomes with ulcer repair and gastric resection surgeries in perforated gastric ulcers after systematic review of literature.

Methods: A systematic literature search was performed for publications in PubMed Medline, Embase, and Cochrane Central Register of Controlled Trials.

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Introduction: The coronavirus disease 2019 (COVID-19) pandemic has expanded the utilization of telemedicine in clinical practice to minimize potential risks to both patients and providers. We aim to describe the perception of telemedicine by both surgical patients and providers to understand the preferences for future incorporation in future surgical practice.

Methods: An anonymous survey was administered to providers that transitioned clinic visits to telemedicine encounters since the start of the COVID-19 pandemic.

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Patients with culture-negative septic arthritis patients are often treated surgically but might be successfully managed medically. We compared clinical characteristics and outcomes in patients with culture negative and culture positive native joint monoarticular septic arthritis. This retrospective study included all patients age ≥18 years admitted to a single, tertiary-care hospital between 1998 and 2015 with native joint monoarticular SA and treated with antibiotics and surgery.

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Objectives: Septic polyarthritis is rarer than septic monoarthritis, but associated with higher mortality. Septic polyarthritis may be difficult to distinguish clinically from noninfectious inflammatory arthritis. We describe one of the largest samples of septic polyarthritis with the aim of distinguishing septic monoarthritis from polyarthritis.

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Background: Isolation of bacteria from synovial fluid (SF) is the gold standard for diagnosis of septic arthritis (SA). Contamination results in misdiagnosis and mismanagement. This study identifies clinical characteristics, microbiology, and outcomes of patients with contaminated SF and compares them with patients with true SA.

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Objective: Studies have shown that language discordance between treatment teams and patients leads to worse patient outcomes, including longer hospital stays, higher rates of readmission, impaired comprehension of discharge instructions, and lower treatment adherence. Yet, there is a paucity of data evaluating the effects of language discordance on postoperative outcomes among vascular surgery patients. This study compared 30-day postoperative complications and readmissions after nonemergent infrainguinal bypass between non-English-speaking (NES) and English-speaking (ES) patients.

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Purpose: Limited data guide practice in evaluation and treatment of septic bursitis. We aimed to characterize clinical characteristics, microbiology, and outcomes of patients with septic bursitis stratified by bursal involvement, presence of trauma, and management type.

Methods: We conducted a retrospective cohort study of adult patients admitted to a single center from 1998 to 2015 with culture-proven olecranon and patellar septic bursitis.

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Background: We set out to compare the rates of Medicare reimbursement to physicians versus hospitals for several major vascular procedures over a period of 5 years.

Methods: We queried the Wolters Kluwer MediRegs database to collect Medicare reimbursement data from fiscal years 2011 to 2015. We surveyed reimbursements for carotid endarterectomy, carotid angioplasty and stenting, femoropopliteal bypass, and lower extremity fem-pop revascularization with stenting.

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Background: Native arteriovenous fistulas (AVFs) have a high 1 year failure rate leading to a need for secondary procedures. We set out to create a predictive model of early failure in patients undergoing first-time AVF creation, to identify failure-associated factors and stratify initial failure risk.

Methods: The Vascular Study Group of New England (VSGNE) (2010-2014) was queried to identify patients undergoing first-time AVF creation.

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