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https://www.readbyqxmd.com/read/28433660/redox-regulation-of-gasotransmission-in-the-vascular-system-a-focus-on-angiogenesis
#1
REVIEW
Rajesh K Mistry, Alison C Brewer
Reactive oxygen species have emerged as key participants in a broad range of physiological and pathophysiological processes, not least within the vascular system. Diverse cellular functions which have been attributed to some of these pro-oxidants within the vasculature include the regulation of blood pressure, neovascularisation and vascular inflammation. We here highlight the emerging roles of the enzymatically-generated reaction oxygen species, O2(-) and H2O2, in the regulation of the functions of the gaseous signalling molecules: nitric oxide (NO), carbon monoxide (CO), and hydrogen sulphide (H2S)...
April 19, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28432149/cd73-on-t-cells-orchestrates-cardiac-wound-healing-after-myocardial-infarction-by-purinergic-metabolic-reprogramming
#2
Nadine Borg, Christina Alter, Nicole Görldt, Christoph Jacoby, Zhaoping Ding, Bodo Steckel, Christine Quast, Florian Bönner, Daniela Friebe, Sebastian Temme, Ulrich Flögel, Jürgen Schrader
Background -T-cells are required for proper healing after myocardial infarction. The mechanism of their beneficial action, however, is unknown. The pro-inflammatory "danger signal" adenosine triphosphate (ATP), released from damaged cells, is degraded by the ectonucleotidases CD39 and CD73 to the anti-inflammatory mediator adenosine. Here, we investigate the contribution of CD73-derived adenosine produced by T-cells to cardiac remodeling after ischemia/reperfusion and define its mechanism of action. Methods -Myocardial ischemia (50 min /reperfusion) was induced in global CD73(-/-) and CD4-CD73(-/-) mice...
April 21, 2017: Circulation
https://www.readbyqxmd.com/read/28431721/intra-aortic-missile-after-gunshot-wound-to-chest-an-interesting-case-of-traumatic-cardiac-injury
#3
Charles D Fraser, Lee Goeddel, Nishant D Patel, Said C Azoury, Joshua C Grimm, Rosanne B Sheinberg, Christopher M Sciortino
Missile embolus to the heart, although uncommon, is one of the most challenging scenarios in trauma. We describe a 36-year-old man who presented with a gunshot wound to the left chest and a chest x-ray revealing a foreign body in the mediastinum. A median sternotomy was performed and an injury to the left ventricle was identified. After intraoperative echocardiography and fluoroscopy confirmed a foreign body in the aortic root, cardiopulmonary bypass was implemented. A bullet was retrieved from the noncoronary sinus of the aortic valve...
May 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28422918/reassessing-the-cardiac-box-a-comprehensive-evaluation-of-the-relationship-between-thoracic-gunshot-wounds-and-cardiac-injury
#4
Rashi Jhunjhunwala, Michael J Mina, Elizabeth I Roger, Christopher J Dente, Michael Heninger, Jacquelyn S Carr, Stacy D Dougherty, Rondi B Gelbard, Jeffrey M Nicholas, Amy D Wyrzykowski, David V Feliciano, Bryan C Morse
BACKGROUND: High energy missiles can cause cardiac injury regardless of entrance site. This study assesses the adequacy of the anatomic borders of the current "cardiac box" to predict cardiac injury. METHODS: Retrospective autopsy review was performed to identify patients with penetrating torso gunshot wounds 2011-2013. Using a circumferential grid system around the thorax, logistic regression analysis was performed to detect differences in rates of cardiac injury from entrance/exit wounds in the "cardiac box" vs...
April 18, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28419746/factors-for-postoperative-complications-following-pressure-ulcer-operation-stepwise-multiple-logistic-regression-analysis
#5
Hyun Ho Han, Jun Gul Ko, Jong Won Rhie
Patients with pressure ulcers are generally older, have a long hospital stay and often have a variety of comorbidities. The decision to perform surgery for pressure ulcer management can be difficult because of concerns about the risk of postoperative complications. The aim of this study was to analyse the relationship between comorbid conditions and surgical outcomes in order to guide patient selection for pressure ulcer surgery. In 57 patients, data on age, defect size, operating time, hospital stay, body mass index, surgical site, mobility state, cardiac ischaemic history, diabetes, renal failure, ventilator dependency, tracheostomy state, use of haemodilution therapy and cancer were evaluated using stepwise multiple logistic regression analysis to determine the relationships between variables...
April 17, 2017: International Wound Journal
https://www.readbyqxmd.com/read/28403392/association-of-central-nervous-system-depression-with-topical-brimonidine-when-used-for-hemostasis-a-serious-adverse-event
#6
Devorah R Shagalov, Drew Taylor, Rachel Schleichert, Jonathan Weiss, Eduardo Weiss
Importance: Minor bleeding is the most common complication of dermatologic surgery. Topical brimonidine, 0.33%, gel has been reported for the use of hemostasis in dermatologic surgery. The safety profile and risk of systemic toxic effects when brimonidine is used topically for hemostasis is unknown. Objective: To determine the risk of systemic toxic effects of topical brimonidine, 0.33%, gel when used for hemostasis. Design, Setting, and Participants: In this case series from a private practice (Hollywood Dermatology), 2 patients presented for dermatologic procedures, complicated by persistent bleeding...
April 12, 2017: JAMA Dermatology
https://www.readbyqxmd.com/read/28402472/direct-sternal-administration-of-vancomycin-and-gentamicin-during-closure-prevents-wound-infection%C3%A2
#7
Martin Andreas, Moritz Muckenhuber, Doris Hutschala, Alfred Kocher, Florian Thalhammer, Paul Vogt, Tatjana Fleck, Guenther Laufer
OBJECTIVES: Deep sternal wound infection is still a major complication in patients undergoing cardiac surgery. We previously identified mammary artery harvesting as a risk factor for decreased antibiotic tissue penetration. In addition, other risk factors including diabetes may inhibit sufficient tissue penetration of perioperative antibiotic prophylaxis. A novel closure protocol applying 2 topical antibiotics and further recommendations for sternal wiring was introduced at our department to decrease the incidence of sternal wound infections...
April 10, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28399780/triclosan-coated-sutures-for-the-prevention-of-surgical-site-infections-a-meta-analysis
#8
Athanasios A Konstantelias, Chrysi Stefania I Andriakopoulou, Sofia Mourgela
BACKGROUND: The scope of this article is to perform a meta-analysis of the studies that compare the use of triclosan-coated sutures (TCS) to uncoated sutures in prevention of surgical-site infections (SSIs). METHODS: A systematic search of randomized and non-randomized studies was carried out on Pubmed and Scopus databases until July 2016. RESULTS: The meta-analysis of 30 studies (19 randomized, 11 non-randomized; 15,385 procedures) gave evidence that TCS were associated with a lower risk of SSIs (risk ratio [RR] = 0...
June 2017: Acta Chirurgica Belgica
https://www.readbyqxmd.com/read/28394022/limited-versus-full-sternotomy-for-aortic-valve-replacement
#9
REVIEW
Bilal H Kirmani, Sion G Jones, S C Malaisrie, Darryl A Chung, Richard Jnn Williams
BACKGROUND: Aortic valve disease is a common condition that is easily treatable with cardiac surgery. This is conventionally performed by opening the sternum longitudinally down the centre ("median sternotomy") and replacing the valve under cardiopulmonary bypass. Median sternotomy is generally well tolerated, but as less invasive options have become available, the efficacy of limited incisions has been called into question. In particular, the effects of reducing the visibility and surgical access has raised safety concerns with regards to the placement of cannulae, venting of the heart, epicardial wire placement, and de-airing of the heart at the end of the procedure...
April 10, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28386925/vagus-nerve-stimulation-surgical-technique-of-implantation-and-revision-and-related-morbidity
#10
Flavio Giordano, Anna Zicca, Carmen Barba, Renzo Guerrini, Lorenzo Genitori
Indications for vagus nerve stimulation (VNS) therapy include focal, multifocal epilepsy, drop attacks (tonic/atonic seizures), Lennox-Gastaut syndrome, tuberous sclerosis complex (TSC)-related multifocal epilepsy, and unsuccessful resective surgery. Surgical outcome is about 50-60% for seizures control, and may also improve mood, cognition, and memory. On this basis, VNS has also been proposed for the treatment of major depression and Alzheimer's' disease. The vagus nerve stimulator must be implanted with blunt technique on the left side to avoid cardiac side effects through the classic approach for anterior cervical discectomy...
April 2017: Epilepsia
https://www.readbyqxmd.com/read/28376028/a-national-study-of-the-impact-of-delayed-flap-timing-for-treatment-of-patients-with-deep-sternal-wound-infection
#11
Erika D Sears, Adeyiza O Momoh, Kevin C Chung, Yu-Ting Lu, Lin Zhong, Jennifer F Waljee
BACKGROUND: This study aims to evaluate the impact of delayed flap closure on mortality and resource utilization for treatment of deep sternal wound infection (DSWI). METHODS: We analyzed the Truven MarketScan Databases from 2009 - 2013 to identify adult patients who developed DSWI after open cardiac surgery and who received flap closure for treatment. A multivariable logistic regression model was created to evaluate the relationship between mortality and flap timing...
April 1, 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28365093/cardiac-fibroblast-activation-post-myocardial-infarction-current-knowledge-gaps
#12
REVIEW
Yonggang Ma, Rugmani Padmanabhan Iyer, Mira Jung, Michael P Czubryt, Merry L Lindsey
In response to myocardial infarction (MI), the wound healing response of the left ventricle (LV) comprises overlapping inflammatory, proliferative, and maturation phases, and the cardiac fibroblast is a key cell type involved in each phase. It has recently been appreciated that, early post-MI, fibroblasts transform to a proinflammatory phenotype and secrete cytokines and chemokines as well as matrix metalloproteinases (MMPs). Later post-MI, fibroblasts are activated to anti-inflammatory and proreparative phenotypes and generate anti-inflammatory and proangiogenic factors and extracellular matrix (ECM) components that form the infarct scar...
May 2017: Trends in Pharmacological Sciences
https://www.readbyqxmd.com/read/28358595/treatment-of-enterocutaneous-fistulas-then-and-now
#13
Luis Alfonso Ortiz, Bin Zhang, Maureen Walsh McCarthy, Haytham M A Kaafarani, Peter Fagenholz, David R King, Marc De Moya, George Velmahos, Daniel Dante Yeh
BACKGROUND: An enterocutaneous fistula (ECF) is an aberrant connection between the gastrointestinal tract and the skin or atmosphere (enteroatmospheric fistula [EAF]). Multimodal treatment includes surgical procedures, nutrition support, and wound care. We evaluated our practice and compared our outcomes with previous results published from our institution. MATERIALS AND METHODS: We performed a retrospective analysis of hospitalized ECF/EAF patients admitted between January 2011 and November 2015...
March 1, 2017: Nutrition in Clinical Practice
https://www.readbyqxmd.com/read/28356446/fibroblast-specific-genetic-manipulation-of-p38-mapk-in-vivo-reveals-its-central-regulatory-role-in-fibrosis
#14
Jeffery D Molkentin, Darrian Bugg, Natasha Ghearing, Lisa E Dorn, Peter Kim, Michelle A Sargent, Jagadambika Gunaje, Kinya Otsu, Jennifer M Davis
Background -In the heart acute injury induces a fibrotic healing response that generates collagen rich scarring that is at first protective but if inappropriately sustained can worsen heart disease. The fibrotic process is initiated by cytokines, neuroendocrine effectors and mechanical strain that promote resident fibroblast differentiation into contractile and extracellular matrix producing myofibroblasts. The mitogen-activated protein kinase (MAPK) p38α (Mapk14 gene) is known to influence the cardiac injury response, but its direct role in orchestrating programmed fibroblast differentiation and fibrosis in vivo is unknown...
March 29, 2017: Circulation
https://www.readbyqxmd.com/read/28353081/gastrointestinal-manifestations-of-melioidosis-a-single-center-experience
#15
Nitin Jagtap, Harshal Shah, Anuradha Kancharla, Manu Tandan, Partha Pal, Sundeep Lakhtakia, Mohan Ramchandani, D N Reddy
Melioidosis, being increasing, is reported from India. Gastrointestinal manifestations are typically reported as unusual cause of liver and/or splenic abscess. We aimed to describe various gastrointestinal manifestation of melioidosis in the present study. We retrospectively collected data of culture positive melioidosis cases from hospital database during August 2014-October 2016 at Asian Institute of Gastroenterology, Hyderabad. A total of nine culture positive cases (8 male) of melioidosis with median age of 40 years (range 23-66) were analyzed...
March 29, 2017: Indian Journal of Gastroenterology: Official Journal of the Indian Society of Gastroenterology
https://www.readbyqxmd.com/read/28350561/reducing-pediatric-sternal-wound-infections-a-quality-improvement-project
#16
Claudia Delgado-Corcoran, Charlotte S Van Dorn, Charles Pribble, Emily A Thorell, Andrew T Pavia, Camille Ward, Randall Smout, Susan L Bratton, Phillip T Burch
OBJECTIVES: To evaluate whether a quality improvement intervention reduces sternal wound infection rates in children after cardiac surgery. DESIGN: This is a pre- and postintervention quality improvement study. SETTING: A 16-bed cardiac ICU in a university-affiliated pediatric tertiary care children's hospital. PATIENTS: All patients undergoing cardiac surgery via median sternotomy from January 2010 to December 2014 are included...
March 27, 2017: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/28345371/ewma-document-negative-pressure-wound-therapy
#17
Jan Apelqvist, Christian Willy, Ann-Mari Fagerdahl, Marco Fraccalvieri, Malin Malmsjö, Alberto Piaggesi, Astrid Probst, Peter Vowden
1. Introduction Since its introduction in clinical practice in the early 1990's negative pressure wounds therapy (NPWT) has become widely used in the management of complex wounds in both inpatient and outpatient care.(1) NPWT has been described as a effective treatment for wounds of many different aetiologies(2,3) and suggested as a gold standard for treatment of wounds such as open abdominal wounds,(4-6) dehisced sternal wounds following cardiac surgery(7,8) and as a valuable agent in complex non-healing wounds...
March 1, 2017: Journal of Wound Care
https://www.readbyqxmd.com/read/28342704/trends-in-the-presentation-surgical-treatment-and-outcomes-of-tethered-cord-syndrome-a-nationwide-study-from-2001-to-2010
#18
Cyrus M Jalai, Charles Wang, Bryan J Marascalchi, Samantha R Horn, Gregory W Poorman, Olivia J Bono, Anthony K Frempong-Boadu, Peter G Passias
OBJECTIVE: This is a nationwide query into surgical management techniques for tethered cord syndrome, focusing on patient demographic, hospital characteristics, and treatment outcomes. Our hypothesis is that detethering vs. fusion for TCS results in different in-hospital complications. MATERIALS AND METHODS: Retrospective review of the Nationwide Inpatient Sample 2001-2010. Inclusion: TCS discharges undergoing detethering or fusion. Sub-analysis compared TCS cases by age (pediatric [≤9years] vs...
March 22, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28341058/anti-fibrotic-effects-of-soluble-guanylate-cyclase-stimulators-and-activators-a-review-of-the-preclinical-evidence
#19
Peter Sandner, Johannes Peter Stasch
It is now well established that the NO-sGC-cGMP signal transduction system mediates many different physiological functions in almost every conceivable organ system; this has been best characterized in the cardiovascular system where NO-driven cGMP production exerts a plethora of cytoprotective and anti-atherogenic effects, including dilatation, inhibition of vascular smooth muscle proliferation, blockade of leukocyte recruitment, and anti-platelet activity. Accordingly, dysfunctional NO-sGC-cGMP mediated signaling is perceived as the underlying pathophysiological cause of many cardiovascular and non-cardiovascular diseases...
January 2017: Respiratory Medicine
https://www.readbyqxmd.com/read/28338510/laparoscopic-lavage-versus-primary-resection-for-acute-perforated-diverticulitis-review-and-meta-analysis
#20
Marta Penna, Sheraz R Markar, Hugh Mackenzie, Roel Hompes, Chris Cunningham
OBJECTIVE: To compare clinical outcomes after laparoscopic lavage (LL) or colonic resection (CR) for purulent diverticulitis. BACKGROUND: Laparoscopic lavage has been suggested as an alternative treatment for traditional CR. Comparative studies to date have shown conflicting results. METHODS: Electronic searches of Embase, Medline, Web of Science, and Cochrane databases were performed. Weighted mean differences (WMD) were calculated for effect size of continuous variables and pooled odds ratios (POR) calculated for discrete variables...
March 23, 2017: Annals of Surgery
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