Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Medical Specialties

Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 16711 - 16740 of 19802

Full-Text Articles in Entire DC Network

Tracking Transplanted Bone Marrow Stem Cells And Their Effects In The Rat Mcao Stroke Model., Gregory V Goldmacher, Rena Nasser, Daniel Y Lee, Sargon Yigit, Robert Rosenwasser, Lorraine Iacovitti Jan 2013

Tracking Transplanted Bone Marrow Stem Cells And Their Effects In The Rat Mcao Stroke Model., Gregory V Goldmacher, Rena Nasser, Daniel Y Lee, Sargon Yigit, Robert Rosenwasser, Lorraine Iacovitti

Farber Institute for Neuroscience Faculty Papers

In this study, rat bone marrow stromal stem cells (BMSCs) were tracked after IV administration to rats with experimental stroke caused by middle cerebral artery occlusion (MCAO). In addition, the effects of BMSC treatment on blood cell composition, brain glia and sensorimotor behavior was studied and compared to that which occurred spontaneously during the normal recovery process after stroke. We found that the vast majority of radiolabeled or fluorescently labeled BMSCs traveled to and remained in peripheral organs (lungs, spleen, liver) 3 days after IV injection in the MCAO rat. Once in the circulation, BMSCs also produced rapid alterations in …


Complex Cytogenetic Rearrangements At The Durs1 Locus In Syndromic Duane Retraction Syndrome, Hagit N. Baris, Wai-Man Chan, Caroline Andrews, Doron M. Behar, Diana J. Donovan, Cynthia C. Morton, Judith Ranells, Tuya Pal, Azra H. Ligon, Elizabeth C. Engle Jan 2013

Complex Cytogenetic Rearrangements At The Durs1 Locus In Syndromic Duane Retraction Syndrome, Hagit N. Baris, Wai-Man Chan, Caroline Andrews, Doron M. Behar, Diana J. Donovan, Cynthia C. Morton, Judith Ranells, Tuya Pal, Azra H. Ligon, Elizabeth C. Engle

Pediatrics Faculty Publications

No abstract provided.


Expression Of Mismatch Repair Proteins In Colorectal Cancer At Aga Khan University Hospital, Nairobi, Charles M. Wahome Jan 2013

Expression Of Mismatch Repair Proteins In Colorectal Cancer At Aga Khan University Hospital, Nairobi, Charles M. Wahome

Master of Medicine in Anatomic Pathology

Introduction: Microsatellite instability is one of three molecular pathways described in the pathogenesis of colorectal carcinoma. The presence of microsatellite instability in patients with colorectal cancer has implications for prognosis and family counselling. Deficiency in mismatch repair genes leads to microsatellite instability and this can be reliably demonstrated in formalin fixed paraffin embedded tissue by methods, which include immunohistochemistry for the detection of mismatch repair proteins. Local data show a disproportionately large number of younger patients with colorectal cancer compared to that documented in Caucasians. Colorectal cancer in younger ages is often attributed to deficient mismatch repair. The objective of …


Usefulness Of Plasmodium Falciparum-Specific Rapid Diagnostic Tests For Assessment Of Parasite Clearance And Detection Of Recurrent Infections After Artemisinin-Based Combination Therapy, B. Aydin-Schmidt, M. Mubi, U. Morris, M. Petzold, B.E. Ngasala, Zul Premji, A. Bjorkman, A. Martensson Jan 2013

Usefulness Of Plasmodium Falciparum-Specific Rapid Diagnostic Tests For Assessment Of Parasite Clearance And Detection Of Recurrent Infections After Artemisinin-Based Combination Therapy, B. Aydin-Schmidt, M. Mubi, U. Morris, M. Petzold, B.E. Ngasala, Zul Premji, A. Bjorkman, A. Martensson

Pathology, East Africa

Background: Rapid diagnostic test (RDT) is an important tool for parasite-based malaria diagnosis. High specificity of RDTs to distinguish an active Plasmodium falciparum infection from residual antigens from a previous infection is crucial in endemic areas where residents are repeatedly exposed to malaria. The efficiency of two RDTs based on histidine-rich protein 2 (HRP2) and lactate dehydrogenase (LDH) antigens were studied and compared with two microscopy techniques (Giemsa and acridine orange-stained blood smears) and real-time polymerase chain reaction (PCR) for assessment of initial clearance and detection of recurrent P. falciparum infections after artemisinin-based combination therapy (ACT) in a moderately high …


An Exploratory Study Of User-Centered Indexing Of Published Biomedical Images, Sujin Kim Jan 2013

An Exploratory Study Of User-Centered Indexing Of Published Biomedical Images, Sujin Kim

Pathology and Laboratory Medicine Faculty Publications

User-centered image indexing—often reported in research on collaborative tagging, social classification, folksonomy, or personal tagging—has received a considerable amount of attention [1-7]. The general themes in more recent studies on this topic include user-centered tagging behavior by types of images, pros and cons of user-created tags as compared to controlled index terms; assessment of the value added by user-generated tags, and comparison of automatic indexing versus human indexing in the context of web digital image collections such as Flickr. For instance, Golbeck's finding restates the importance of indexer experience, order, and type of images [8]. Rorissa has found a significant …


Development Of A Standard And Functional Tactical Emergency Medical Curriculum -- Tems Medic, Benjamin Hannon Jan 2013

Development Of A Standard And Functional Tactical Emergency Medical Curriculum -- Tems Medic, Benjamin Hannon

Honors Theses

Violent crime causes death and injury regularly in the United States. Some events such as the Newtown shootings, the Oklahoma City bombings, or the Washington, DC sniper case acutely focus the entire nation’s attention while other, less contemporary events fade away. The public safety apparatus – police, fire, and emergency medical services – always respond to save lives. On December 11, 2012 a man opened fire at a mall in Clackamas County, Oregon. The 9-1-1 dispatchers sent units to a shooting at the mall and then quickly reported that the shooter was still firing in the mall. One of the …


Pax3 Expression, Protein Modifications And Downstream Target Gene Profiling In Melanocytes And Melanoma Cells, Danielle Bartlett Jan 2013

Pax3 Expression, Protein Modifications And Downstream Target Gene Profiling In Melanocytes And Melanoma Cells, Danielle Bartlett

Theses: Doctorates and Masters

PAX3 is a transcription factor. It plays a major role in the development of melanocytes in the embryo. As a result of alternative splicing, the gene gives rise to eight different transcripts which encode proteins that have differing structures and are therefore likely to activate different downstream target genes. The presence of post-translational modifications has also been shown to alter the functions of the proteins.

PAX3 regulates the maintenance of undifferentiated melanoblasts and mediates pathways involved in proliferation, migration and survival. It has been shown to be expressed in melanoblasts, adult melanocytes, naevi and in most melanoma cells. This implies …


Review Of Kidney Disease Among Indigenous People, Sasha A. Stumpers, Neil J. Thomson Jan 2013

Review Of Kidney Disease Among Indigenous People, Sasha A. Stumpers, Neil J. Thomson

Research outputs 2013

Kidney disease is a significant health problem for all Australians, but severe kidney disease is more common among Indigenous people than among non- Indigenous people. In particular, the prevalence of chronic kidney disease (CKD) and the overall levels of end-stage kidney disease (ESKD) among Aboriginal and Torres Strait Islander peoples are consistently reported as significantly higher than among other Australians. Information on CKD among Indigenous Australians is available from self-reported survey data, as well as from community-based studies and screening programs [10-20] but the main focus in the literature has been on ESKD. The incidence of ESKD is especially high …


Therapies For Neovascular Age-Related Macular Degeneration: Current Approaches And Pharmacologic Agents In Development., Mostafa Hanout, Daniel Ferraz, Mehreen Ansari, Natasha Maqsood, Saleema Kherani, Yasir J. Sepah, Nithya Rajagopalan, Mohamed Ibrahim, Diana V. Do, Quan Dong Nguyen Jan 2013

Therapies For Neovascular Age-Related Macular Degeneration: Current Approaches And Pharmacologic Agents In Development., Mostafa Hanout, Daniel Ferraz, Mehreen Ansari, Natasha Maqsood, Saleema Kherani, Yasir J. Sepah, Nithya Rajagopalan, Mohamed Ibrahim, Diana V. Do, Quan Dong Nguyen

Journal Articles: Ophthalmology

As one of the leading causes of blindness, age-related macular degeneration (AMD) has remained at the epicenter of clinical research in ophthalmology. During the past decade, focus of researchers has ranged from understanding the role of vascular endothelial growth factor (VEGF) in the angiogenic cascades to developing new therapies for retinal vascular diseases. Anti-VEGF agents such as ranibizumab and aflibercept are becoming increasingly well-established therapies and have replaced earlier approaches such as laser photocoagulation or photodynamic therapy. Many other new therapeutic agents, which are in the early phase clinical trials, have shown promising results. The purpose of this paper is …


Vascular Disrupting Agent For Neovascular Age Related Macular Degeneration: A Pilot Study Of The Safety And Efficacy Of Intravenous Combretastatin A-4 Phosphate, Mohamed A. Ibrahim, Diana V. Do, Yasir J. Sepah, Syed M. Shah, Elizabeth Van Anden, Gulnar Hafiz, J. Kevin Donahue, Richard Rivers, Jai Balkissoon, James T. Handa, Peter A. Campochiaro, Quan Dong Nguyen Jan 2013

Vascular Disrupting Agent For Neovascular Age Related Macular Degeneration: A Pilot Study Of The Safety And Efficacy Of Intravenous Combretastatin A-4 Phosphate, Mohamed A. Ibrahim, Diana V. Do, Yasir J. Sepah, Syed M. Shah, Elizabeth Van Anden, Gulnar Hafiz, J. Kevin Donahue, Richard Rivers, Jai Balkissoon, James T. Handa, Peter A. Campochiaro, Quan Dong Nguyen

Journal Articles: Ophthalmology

BACKGROUND:

This study was designed to assess the safety, tolerability, and efficacy of intravenous infusion of CA4P in patients with neovascular age-related macular degeneration (AMD).

METHODS:

Prospective, interventional, dose-escalation clinical trial. Eight patients with neovascular AMD refractory to at least 2 sessions of photodynamic therapy received CA4P at a dose of 27 or 36 mg/m2 as weekly intravenous infusion for 4 consecutive weeks. Safety was monitored by vital signs, ocular and physical examinations, electrocardiogram, routine laboratory tests, and collection of adverse events. Efficacy was assessed using retinal fluorescein angiography, optical coherence tomography, and best corrected visual acuity (BCVA).

RESULTS:

The …


Implementation And Evaluation Of A Low Health Literacy And Culturally Sensitive Diabetes Education Program (Poster), Deborah Swavely Dnp, Rn, Allison Vorderstrasse Dnsc, Aprn, Edgardo Maldonado Md, Sherrine Eid Mph, Jeffrey Etchason Md Jan 2013

Implementation And Evaluation Of A Low Health Literacy And Culturally Sensitive Diabetes Education Program (Poster), Deborah Swavely Dnp, Rn, Allison Vorderstrasse Dnsc, Aprn, Edgardo Maldonado Md, Sherrine Eid Mph, Jeffrey Etchason Md

Department of Community Health and Health Studies

No abstract provided.


Foot Dimensions As A Tool For Gender Determination In Kenyan Adults, Maureen W. Waithaka Jan 2013

Foot Dimensions As A Tool For Gender Determination In Kenyan Adults, Maureen W. Waithaka

Master of Medicine in Anatomic Pathology

Introduction: Anthropometry has gained popularity over the years as a reliable method to determine gender. In forensic investigation, there are cases where gender cannot be readily determined using anatomy such as in mass casualty disasters with dismemberment and commingling of limbs. Kenyan descriptive data of foot dimensions is lacking as are formulae for estimating gender. Proven differences in foot dimensions across races prevent application of formula obtained using different populations necessitating generation of local data and formulae. Objectives: To describe the foot lengths, breaths and navicular heights of a representative adult Kenyan population, both male and female, and derive from …


Aβ Alters The Dna Methylation Status Of Cell-Fate Genes In An Alzheimer’S Disease Model, Gary D. Isaacs, Noor Taher, Courtney Mckenzie, Rebecca Garrett, Matthew Baker, Nena Fox Jan 2013

Aβ Alters The Dna Methylation Status Of Cell-Fate Genes In An Alzheimer’S Disease Model, Gary D. Isaacs, Noor Taher, Courtney Mckenzie, Rebecca Garrett, Matthew Baker, Nena Fox

Faculty Publications and Presentations

Alzheimer’s disease (AD) is characterized by neurofibrillary tangles and extracellular amyloid-β plaques (Aβ). Despite ongoing research, some ambiguity remains surrounding the role of Aβ in the pathogenesis of this neurodegenerative disease. While several studies have focused on the mutations associated with AD, our understanding of the epigenetic contributions to the disease remains less clear. To that end, we determined the changes in DNA methylation in differentiated human neurons with and without Aβ treatment. We isolated the DNA from neurons treated with Aβ or vehicle, and digested the two samples with either a methylation-sensitive (HpaII) or a methylation-insensitive (MspI) restriction endonuclease. …


Potential For High Resolution Microscintigraphy Using Polycapillary Optics, Patrick Richard Conlon Jan 2013

Potential For High Resolution Microscintigraphy Using Polycapillary Optics, Patrick Richard Conlon

Legacy Theses & Dissertations (2009 - 2024)

Scintigraphy, also known as nuclear imaging, is the process of imaging an object that has been labeled with a radioactive material. A novel technique employing polycapillary optics for very high - resolution scintigraphy is presented. The small channel size and angular selectivity of polycapillary optics allow them to act as multiple-hole collimators and be used with high - resolution detectors. The ability of the optics to work with high resolution detectors allow the system to discriminate against scatter, thus negating the need for energy sensitive detectors, which are known to have poor resolution. Therefore the use of polycapillary optics presents …


The Identification Of Diagnostic Serological Autoantibodies For Cutaneous Melanoma, Pauline Zaenker Jan 2013

The Identification Of Diagnostic Serological Autoantibodies For Cutaneous Melanoma, Pauline Zaenker

Theses: Doctorates and Masters

Abstract not available.


Components Of The Complete Blood Count As Risk Predictors For Coronary Heart Disease: In-Depth Review And Update, Mohammad Madjid, Omid Fatemi Jan 2013

Components Of The Complete Blood Count As Risk Predictors For Coronary Heart Disease: In-Depth Review And Update, Mohammad Madjid, Omid Fatemi

The Texas Heart Institute Journal

Atherosclerosis is an inflammatory disease, and several inflammatory biomarkers, such as C-reactive protein, have been used to predict the risk of coronary heart disease. High white blood cell count is a strong and independent predictor of coronary risk in patients of both sexes, with and without coronary heart disease. A high number of white blood cells and their subtypes (for example, neutrophils, monocytes, lymphocytes, and eosinophils) are associated with the presence of coronary heart disease, peripheral arterial disease, and stroke. The coronary heart disease risk ratios associated with a high white blood cell count are comparable to those of other …


Feasibility Of Temporary Biventricular Pacing After Off-Pump Coronary Artery Bypass Grafting In Patients With Reduced Left Ventricular Function, Daniel Y Wang, Lauren A Kelly, Marc E Richmond, T Alexander Quinn, Bin Cheng, Michelle D Spotnitz, Santos E Cabreriza, Yoshifumi Naka, Allan S Stewart, Craig R Smith, Henry M Spotnitz Jan 2013

Feasibility Of Temporary Biventricular Pacing After Off-Pump Coronary Artery Bypass Grafting In Patients With Reduced Left Ventricular Function, Daniel Y Wang, Lauren A Kelly, Marc E Richmond, T Alexander Quinn, Bin Cheng, Michelle D Spotnitz, Santos E Cabreriza, Yoshifumi Naka, Allan S Stewart, Craig R Smith, Henry M Spotnitz

The Texas Heart Institute Journal

In selected patients undergoing cardiac surgery, our research group previously showed that optimized temporary biventricular pacing can increase cardiac output one hour after weaning from cardiopulmonary bypass. Whether pacing is effective after beating-heart surgery is unknown. Accordingly, in this study we examined the feasibility of temporary biventricular pacing after off-pump coronary artery bypass grafting.

The effects of optimized pacing on cardiac output were measured with an electromagnetic aortic flow probe at the conclusion of surgery in 5 patients with a preoperative mean left ventricular ejection fraction of 0.26 (range, 0.15–0.35). Atrioventricular (7) and interventricular (9) delay settings were optimized in …


Untitled, Richard S. Koch Jan 2013

Untitled, Richard S. Koch

Koch Collection, Papers of Richard S Koch, DO

Provides support for association between spinal asymmetry and heart disease and how osteopathic physicians can help treat heart disease through treatment of asymmetries.


Principles Of Manipulative Management Of Essential Hypertension, Richard S. Koch Jan 2013

Principles Of Manipulative Management Of Essential Hypertension, Richard S. Koch

Koch Collection, Papers of Richard S Koch, DO

Rough draft of article on musculoskeletal findings and treatment associated with hypertension.


General Principles Of Spinal Treatment, Richard S. Koch Jan 2013

General Principles Of Spinal Treatment, Richard S. Koch

Koch Collection, Papers of Richard S Koch, DO

Discusses mechanism behind spinal asymmetry and back pain and then provides therapy modalities and images to demonstrate these treatment options.


Spinal Asymmetries - Their Determination, Incidence And Pathophysiologic Association, Richard S. Koch Jan 2013

Spinal Asymmetries - Their Determination, Incidence And Pathophysiologic Association, Richard S. Koch

Koch Collection, Papers of Richard S Koch, DO

Abstract for talk at Madrid FIMM Convention on spinal asymmetries


Neck Care, Richard S. Koch Jan 2013

Neck Care, Richard S. Koch

Koch Collection, Papers of Richard S Koch, DO

Hand-out given to Dr Koch's patients, that provided plan following their neck treatment.


Poignant Pointers From 60 Years Treating Backs And Necks - Goals, Richard S. Koch Jan 2013

Poignant Pointers From 60 Years Treating Backs And Necks - Goals, Richard S. Koch

Koch Collection, Papers of Richard S Koch, DO

Article discussing etiology of chronic back and neck aches and how to reduce/remove these causes and permanently strengthen back via fibrin therapy; "back-ache genesis"; in support of fibrotherapy.


Justifying Postural X-Rays To Reveal Asymmetries, Richard S. Koch Jan 2013

Justifying Postural X-Rays To Reveal Asymmetries, Richard S. Koch

Koch Collection, Papers of Richard S Koch, DO

Abstract which attempts to justify the use of spinal x-rays to reveal spinal asymmetries that correlate with back pain and visceral dysfunction/diseases.


Effect Of Doping On Β-Tricalcium Phosphate Bioresorbable Bulk Material And Thin Film Coatings, Suhaila Abdalla Jan 2013

Effect Of Doping On Β-Tricalcium Phosphate Bioresorbable Bulk Material And Thin Film Coatings, Suhaila Abdalla

Dissertations

Magnesium has emerged as a revolutionary biodegradable metal for use as an orthopedic material, it has several advantages over the permanent metallic materials currently in use, including eliminating the effects of stress shielding, improving biocompatibility and degradation properties, thus removing the requirement of a second surgery for implant removal. Due to the rapid degradation of magnesium, it is necessary to control the corrosion rates of the materials to match the rates of bone healing. This dissertation reports on the effect of doping on the properties of β-tricalcium phosphate (β-TCP). It also reports on its application as a thin film coating …


Maternal Circulating Leukocytes Display Early Chemotactic Responsiveness During Late Gestation, Nardhy Gomez-Lopez, Satomi Tanaka, Zoya Zaeem, Gerlinde A. Metz, David M. Olson Jan 2013

Maternal Circulating Leukocytes Display Early Chemotactic Responsiveness During Late Gestation, Nardhy Gomez-Lopez, Satomi Tanaka, Zoya Zaeem, Gerlinde A. Metz, David M. Olson

Wayne State University Associated BioMed Central Scholarship

Abstract

Background

Parturition has been widely described as an immunological response; however, it is unknown how this is triggered. We hypothesized that an early event in parturition is an increased responsiveness of peripheral leukocytes to chemotactic stimuli expressed by reproductive tissues, and this precedes expression of tissue chemotactic activity, uterine activation and the systemic progesterone/estradiol shift.

Methods

Tissues and blood were collected from pregnant Long-Evans rats on gestational days (GD) 17, 20 and 22 (term gestation). We employed a validated Boyden chamber assay, flow cytometry, quantitative real time-polymerase chain reaction, and enzyme-linked immunosorbent assays.

Results

We found that GD20 maternal …


Subjective Health Status And Health-Related Quality Of Life Among Women With Recurrent Vulvovaginal Candidosis (Rvvc) In Europe And The Usa, Samuel Aballéa, Florent Guelfucci, Julian Wagner, Amine Khemiri, Jean-Paul Dietz, Jack Sobel, Mondher Toumi Jan 2013

Subjective Health Status And Health-Related Quality Of Life Among Women With Recurrent Vulvovaginal Candidosis (Rvvc) In Europe And The Usa, Samuel Aballéa, Florent Guelfucci, Julian Wagner, Amine Khemiri, Jean-Paul Dietz, Jack Sobel, Mondher Toumi

Wayne State University Associated BioMed Central Scholarship

Abstract

Background

Recurrent vulvovaginal candidosis (RVVC) is a chronic condition causing discomfort and pain. Health status and health-related quality of life (HRQoL) in RVVC were never previously described using validated questionnaires. The objective of this study is to describe subjective health status and HRQoL and estimate health state utilities among women with RVVC.

Methods

A cross-sectional online survey was conducted among women who reported having suffered four or more yeast infections over the past 12 months, in five European countries (France, Germany, Italy, Spain and the UK) and the USA. Index scores were derived from the EQ-5D, a questionnaire providing …


An Edge-Directed Interpolation Method For Fetal Spine Mr Images, Shaode Yu, Rui Zhang, Shibin Wu, Jiani Hu, Yaoqin Xie Jan 2013

An Edge-Directed Interpolation Method For Fetal Spine Mr Images, Shaode Yu, Rui Zhang, Shibin Wu, Jiani Hu, Yaoqin Xie

Wayne State University Associated BioMed Central Scholarship

Abstract

Background

Fetal spinal magnetic resonance imaging (MRI) is a prenatal routine for proper assessment of fetus development, especially when suspected spinal malformations occur while ultrasound fails to provide details. Limited by hardware, fetal spine MR images suffer from its low resolution.

High-resolution MR images can directly enhance readability and improve diagnosis accuracy. Image interpolation for higher resolution is required in clinical situations, while many methods fail to preserve edge structures. Edge carries heavy structural messages of objects in visual scenes for doctors to detect suspicions, classify malformations and make correct diagnosis. Effective interpolation with well-preserved edge structures is still …


Do Mechanical Pressure-Equalizing Devices Such As Otovent® And Prep Relieve Or Reduce Ear Pain And Pressure In Aircraft Passengers During Flight?, Michael Ferentino Jan 2013

Do Mechanical Pressure-Equalizing Devices Such As Otovent® And Prep Relieve Or Reduce Ear Pain And Pressure In Aircraft Passengers During Flight?, Michael Ferentino

PCOM Physician Assistant Studies Student Scholarship

OBJECTIVE: The objective of this selective EBM review is to determine whether or not mechanical pressure-equalizing devices relieve or reduce ear pain and pressure in aircraft passengers during flight.

STUDY DESIGN: A review of two double-blind control trials and one case control study published between 1988 and 2010 in the English language.

DATA RESOURCES: Double-blind control trials focused on the use of pressure-equalizing ear plugs (PREP) and a case control study on the Otovent® auto-inflation device for the prevention of barotrauma in aircraft passengers were found using Cochraine Library, Medline, and PubMed.

OUTCOMES MEASURED: Outcomes measured …


Open Tracheostomy After Aborted Percutaneous Approach Due To Tracheoscopy Revealing Occult Tracheal Wall Ulcer, John Schweiger, Collin Sprenker, Devanand Mangar, Rachel Karlnoski, Naga Pullakhandam, Enrico M. Camporesi Jan 2013

Open Tracheostomy After Aborted Percutaneous Approach Due To Tracheoscopy Revealing Occult Tracheal Wall Ulcer, John Schweiger, Collin Sprenker, Devanand Mangar, Rachel Karlnoski, Naga Pullakhandam, Enrico M. Camporesi

Surgery Faculty Publications

Tracheostomy is a common procedure for intensive care patients requiring prolonged mechanical ventilation. In this case report, we describe a 78-year-old female patient admitted for an aneurysm of the cerebral anterior communicating artery. Following immediate endovascular coiling, she remained ventilated and was transferred to the neurological intensive care unit. On postoperative day ten, a percutaneous tracheostomy (PCT) was requested; however, a large ulcer or possible tracheoesophageal fistula was identified on the posterior tracheal wall following bronchoscopic assessment of the trachea. Therefore, the requested PCT procedure was aborted. An open tracheostomy in the operating room was completed; however, due to the …