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https://www.readbyqxmd.com/read/29148139/nitroglycerin-an-unusual-solution-to-intraoperative-hypothermia-in-a-4-year-old-burn-patient
#1
Eduardo J Goenaga Díaz, Jeffrey E Carter, T Wesley Templeton
We describe the case of a 4-year-old child undergoing extensive burn surgery with refractory intraoperative hypothermia. A low-dose nitroglycerin infusion was initiated to reverse vasoconstriction and improve heat absorption, after which the child's temperature steadily improved. In hypothermic burn patients, topical vasoconstrictors may hinder surface warming efforts. A vasodilator infusion may aid in warming the pediatric patient undergoing extensive excision and grafting.
November 17, 2017: Paediatric Anaesthesia
https://www.readbyqxmd.com/read/29147918/aortic-arch-aneurysm-surgery-what-is-the-gold-standard-temperature-in-the-absence-of-randomized-data
#2
Amer Harky, Mohamad Bashir, Giovanni Mariscalco
In the absence randomized data for assessing the best and optimal temperature for managing open aortic arch surgery patients, cerebral protection method is still performed through hypothermic circulatory arrest with or without the use of adjuncts. A recent consensus has emerged setting to define the temperature levels. In an attempt, this was aimed to establish a solid ground for future trials in aortic arch surgery. This article reviews the current literature and the evidences behind using different temperature methods and their outcomes in patients undergoing open aortic arch surgery...
November 16, 2017: General Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29147526/a-ratiometric-fluorescent-probe-for-imaging-and-quantifying-anti-apoptotic-effects-of-gsh-under-temperature-stress
#3
Xiaoyue Han, Xinyu Song, Fabiao Yu, Lingxin Chen
Hypothermia and hyperthermia are cell stressed states resulting from environmental temperature changes, which can abnormally decrease intracellular glutathione (GSH) concentrations and induce apoptosis. As the most abundant intracellular non-protein biothiol, GSH can protect cells from apoptosis. Considering the important roles of GSH in the anti-apoptotic process in cells and in vivo, we strive to develop a powerful chemical tool for the direct detection of GSH concentration changes under temperature stress...
October 1, 2017: Chemical Science
https://www.readbyqxmd.com/read/29142469/hypothermic-machine-perfusion-with-metformin-university-of-wisconsin-solution-for-ex-vivo-preservation-of-standard-and-marginal-liver-grafts-in-a-rat-model
#4
Yi-Chao Chai, Guo-Xin Dang, Hai-Qi He, Jian-Hua Shi, Hong-Ke Zhang, Rui-Tao Zhang, Bo Wang, Liang-Shuo Hu, Yi Lv
AIM: To compare the effect of University of Wisconsin (UW) solution with or without metformin, an AMP-activated protein kinase (AMPK) activator, for preserving standard and marginal liver grafts of young and aged rats ex vivo by hypothermic machine perfusion (HMP). METHODS: Eighteen young (4 mo old) and 18 aged (17 mo old) healthy male SD rats were selected and randomly divided into three groups: control group, UW solution perfusion group (UWP), and UW solution with metformin perfusion group (MUWP)...
October 28, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/29138454/differences-in-mitochondrial-function-and-morphology-during-cooling-and-rewarming-between-hibernator-and-non-hibernator-derived-kidney-epithelial-cells
#5
Koen D W Hendriks, Eleonora Lupi, Maarten C Hardenberg, Femke Hoogstra-Berends, Leo E Deelman, Robert H Henning
Hibernators show superior resistance to ischemia and hypothermia, also outside the hibernation season. Therefore, hibernation is a promising strategy to decrease cellular damage in a variety of fields, such as organ transplantation. Here, we explored the role of mitochondria herein, by comparing epithelial cell lines from a hibernator (hamster kidney cells, HaK) and a non-hibernator (human embryonic kidney cells, HEK293) during cold preservation at 4 °C and rewarming. Cell survival (Neutral Red), ATP and MDA levels, mitochondrial membrane potential (MMP), mitochondrial morphology (using fluorescent probes) and metabolism (seahorse XF) were assessed...
November 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29136348/outcomes-of-donation-after-circulatory-death-kidneys-undergoing-hypothermic-machine-perfusion-following-static-cold-storage-a-uk-population-based-cohort-study
#6
Kamlesh Patel, Jay Nath, James Hodson, Nick Inston, Andrew Ready
Evidence is currently lacking regarding the outcomes of kidneys undergoing Hypothermic Machine Perfusion (HMP) in the UK. Using the National Health Service Blood and Transplant database, the authors compared outcomes for recipients of single organ Donation after Circulatory Death (DCD) kidneys preserved with HMP to those using only static cold storage (SCS). Between 2007 and 2015, HMP was used in 19.1% (864/4,529) of kidneys. Rates of delayed graft function (DGF) were significantly lower in organs preserved with HMP than for SCS (34...
November 14, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/29133296/comparison-of-preservation-and-transportation-protocols-for-preloaded-descemet-membrane-endothelial-keratoplasty
#7
Vito Romano, Mohit Parekh, Alessandro Ruzza, Colin E Willoughby, Stefano Ferrari, Diego Ponzin, Stephen B Kaye, Hannah J Levis
BACKGROUND/AIMS: Descemet membrane endothelial keratoplasty (DMEK) preparation is technically demanding and is a limiting factor for uptake of this kind of surgery. Supply methods that simplify the procedure for surgeons are key to increasing uptake. This study compares two different shipping protocols for DMEK. METHODS: An 8.5 mm DMEK graft was punched, marked and loaded for transportation in two different conditions: (A) endothelium trifolded inwards in organ culture conditions (n=7) and (B) endothelium rolled outwards in hypothermic conditions (n=7)...
November 13, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/29126676/deep-hypothermic-circulatory-arrest-in-a-patient-with-severe-g6pd-deficiency
#8
Genevieve E Staudt, Jason Zhensheng Qu
No abstract text is available yet for this article.
August 2, 2017: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/29125053/twenty-minutes-of-normothermic-cardiac-arrest-in-a-pig-model-the-role-of-short-term-hypothermia-for-neurological-outcome
#9
Katharina Foerster, Christoph Benk, Friedhelm Beyersdorf, Heidi Cristina Schmitz, Karin Wittmann, Itumeleng Taunyane, Claudia Heilmann, Georg Trummer
INTRODUCTION: Cardiopulmonary resuscitation restores circulation, but with inconsistent blood-flow and pressures. Our recent approach using an extracorporeal life support system, named "controlled integrated resuscitation device" (CIRD), may lead to improved survival and neurological recovery after cardiac arrest (CA). The basic idea is to provide a reperfusion tailored to the individual patient by control of the conditions of reperfusion and the composition of the reperfusate. Hypothermia is one aspect of this concept...
November 1, 2017: Perfusion
https://www.readbyqxmd.com/read/29116863/hypothermia-promotes-cell-protective-and-chondroprotective-effects-after-blunt-cartilage-trauma
#10
Jana Riegger, Madeleine Zimmermann, Helga Joos, Thomas Kappe, Rolf E Brenner
BACKGROUND: Cryotherapy is routinely administered after sports injuries of synovial joints. Although positive clinical effects on periarticular swelling and pain have been described, the effects on the cell biological activities of cartilage and synovial cells remain largely unknown so far. HYPOTHESIS: Local hypothermia alleviates synovial reactions and prevents chondrocyte death as well as cartilage destructive processes after blunt cartilage trauma. STUDY DESIGN: Controlled laboratory study...
November 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29108514/hypothermic-oxygenated-machine-perfusion-for-liver-transplantation-an-initial-experience
#11
Damiano Patrono, Bruna Lavezzo, Luca Molinaro, Giorgia Rizza, Giorgia Catalano, Federica Gonella, Mauro Salizzoni, Renato Romagnoli
OBJECTIVES: Due to widespread exploitation of extended criteria donors, machine perfusion is emerging as an alternative to static cold storage for organ preservation. Hypothermic oxygenated machine perfusion has been associated with improved outcomes after liver transplant, both in laboratory and clinical settings. Here, we present our initial experience with hypothermic oxygenated machine perfusion, evaluating incidence of postreperfusion syndrome, early allograft dysfunction, and long-term biliary complications...
October 31, 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/29106924/a-randomized-trial-of-conditioned-or-unconditioned-gases-for-stabilizing-preterm-infants-at-birth
#12
Lorraine McGrory, Louise S Owen, Marta Thio, Jennifer A Dawson, Anthony R Rafferty, Atul Malhotra, Peter G Davis, C Omar F Kamlin
OBJECTIVE: To determine whether the use of heated-humidified gases for respiratory support during the stabilization of infants <30 weeks of gestational age (GA) in the delivery room reduces rates of hypothermia on admission to the neonatal intensive care unit (NICU). STUDY DESIGN: A multicenter, unblinded, randomized trial was conducted in Melbourne, Australia, between February 2013 and June 2015. Infants <30 weeks of GA were randomly assigned to receive either heated-humidified gases or unconditioned gases during stabilization in the delivery room and during transport to NICU...
October 26, 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/29103365/whole-body-perfusion-strategy-for-aortic-arch-repair-under-moderate-hypothermia
#13
Christopher L Tarola, Katie L Losenno, Jill J Gelinas, Philip M Jones, Philip Fernandes, Stephanie A Fox, Bob Kiaii, Michael W A Chu
INTRODUCTION: Aortic arch reconstruction under moderate hypothermia is commonly performed with antegrade cerebral perfusion (ACP) for brain protection; however, hypothermia alone is often solely relied upon for visceral and lower body protection. We investigated whether the addition of simultaneous lower body perfusion to ACP (whole body perfusion - WBP) may ameliorate the metabolic derangements of moderate hypothermic circulatory arrest (MHCA). METHODS: Between 2008 and 2014, 106 consecutive patients underwent elective or emergent aortic arch surgery with MHCA, with either ACP only (44 patients, 66±12 years, 30% female) or WBP (62 patients, 61±15 years, 31% female)...
November 1, 2017: Perfusion
https://www.readbyqxmd.com/read/29100641/retrograde-cerebral-perfusion-is-effective-for-prolonged-circulatory-arrest-in-arch-aneurysm-repair
#14
Christopher Lau, Mario Gaudino, Erin Mills Iannacone, Ivancarmine Gambardella, Monica Munjal, Lucas B Ohmes, Benjamin C Degner, Leonard N Girardi
BACKGROUND: The optimal brain protection strategy for prolonged periods of circulatory arrest is still controversial. This study evaluated whether retrograde cerebral perfusion (RCP) provides adequate brain protection for prolonged periods of deep hypothermic circulatory arrest (DHCA). METHODS: From January 1997 to December 2014, 1,043 patients underwent aortic arch operations using RCP and DHCA at 18°C. The DHCA time for 993 patients was 49 minutes or less and the DHCA time for the remaining 50 patients was 50 minutes or more...
November 1, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29096343/non-anastomotic-strictures-after-transplanting-a-liver-graft-with-an-accidentally-ligated-and-unflushed-common-bile-duct-a-case-report
#15
Nicolas Meurisse, Jacques Pirenne, Diethard Monbaliu
INTRODUCTION: Non-anastomotic biliary strictures (NAS) represent a major cause of morbidity, graft loss, and mortality after liver transplantation (LTx). NAS can result from an ischemic/immune-mediated injury, or from the cytotoxic effect that bile salts have on the biliary mucosa under hypothermic conditions. For this reason it is crucial to flush the bile duct at the time of procurement. PRESENTATION OF CASE: We report a case of an imported liver with an accidentally ligated and subsequently completely unflushed common bile duct...
October 26, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29089204/the-impact-of-operative-time-and-hypothermia-in-acute-burn-surgery
#16
N Ziolkowski, A D Rogers, W Xiong, B Hong, S Patel, B Trull, M G Jeschke
BACKGROUND: Prolonged operative time and intraoperative hypothermia are known to have deleterious effects on surgical outcomes. Although millions of burn injuries undergo operative treatment globally every year, there remains a paucity of evidence to guide perioperative practice in burn surgery. This study evaluated associations between hypothermia and operative time on post-operative complications in acute burn surgery. METHOD: A historical cohort study from January 1, 2006 to October 31, 2015 was completed at an American Burn Association verified burn centre...
October 28, 2017: Burns: Journal of the International Society for Burn Injuries
https://www.readbyqxmd.com/read/29080092/efficacy-of-modified-less-invasive-quick-replacement-using-mild-hypothermic-arrest-and-partial-retrograde-cerebral-perfusion-for-type-a-acute-aortic-dissection
#17
Mitsumasa Hata, Yukihiko Orime, Shinji Wakui, Tomofumi Umeda, Kenji Akiyama, Masashi Tanaka
OBJECTIVE: We previously reported a unique technique called "less invasive quick replacement (LIQR)" for treating type A acute aortic dissection with moderate hypothermic arrest (28 °C). This study examines the modified LIQR using mild hypothermic arrest (30 °C) with partial retrograde cerebral perfusion (RCP). METHODS: 187 patients were divided into 2 groups: group L consisted of 130 patients underwent LIQR without any cerebral perfusion; group M consisted of 57 patients who were treated with modified LIQR...
October 27, 2017: General Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29069926/prevention-of-ischemia-reperfusion-lung-injury-during-static-cold-preservation-by-supplementation-of-standard-preservation-solution-with-hemo2life-%C3%A2-in-pig-lung-transplantation-model
#18
M Glorion, V Polard, F Favereau, T Hauet, F Zal, E Fadel, E Sage
We describe the results of adding a new biological agent HEMO2life(®) to a standard preservation solution for hypothermic static lung preservation aiming to improve early functional parameters after lung transplantation. HEMO2life(®) is a natural oxygen carrier extracted from Arenicola marina with high oxygen affinity developed as an additive to standard organ preservation solutions. Standard preservation solution (Perfadex(®)) was compared with Perfadex(®) associated with HEMO2life(®) and with sham animals after 24 h of hypothermic preservation followed by lung transplantation...
October 25, 2017: Artificial Cells, Nanomedicine, and Biotechnology
https://www.readbyqxmd.com/read/29067428/effect-of-therapeutic-hypothermia-initiated-after-6-hours-of-age-on-death-or-disability-among-newborns-with-hypoxic-ischemic-encephalopathy-a-randomized-clinical-trial
#19
RANDOMIZED CONTROLLED TRIAL
Abbot R Laptook, Seetha Shankaran, Jon E Tyson, Breda Munoz, Edward F Bell, Ronald N Goldberg, Nehal A Parikh, Namasivayam Ambalavanan, Claudia Pedroza, Athina Pappas, Abhik Das, Aasma S Chaudhary, Richard A Ehrenkranz, Angelita M Hensman, Krisa P Van Meurs, Lina F Chalak, Shannon E G Hamrick, Gregory M Sokol, Michele C Walsh, Brenda B Poindexter, Roger G Faix, Kristi L Watterberg, Ivan D Frantz, Ronnie Guillet, Uday Devaskar, William E Truog, Valerie Y Chock, Myra H Wyckoff, Elisabeth C McGowan, David P Carlton, Heidi M Harmon, Jane E Brumbaugh, C Michael Cotten, Pablo J Sánchez, Anna Maria Hibbs, Rosemary D Higgins
Importance: Hypothermia initiated at less than 6 hours after birth reduces death or disability for infants with hypoxic-ischemic encephalopathy at 36 weeks' or later gestation. To our knowledge, hypothermia trials have not been performed in infants presenting after 6 hours. Objective: To estimate the probability that hypothermia initiated at 6 to 24 hours after birth reduces the risk of death or disability at 18 months among infants with hypoxic-ischemic encephalopathy...
October 24, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/29060413/influence-of-light-finger-touch-on-postural-stability-during-upright-stance-with-cold-induced-plantar-hypoesthesia
#20
Kazushige Oshita, Sumio Yano
The present study investigated the influence of light finger touch on postural stability during an upright stance with or without cold-induced plantar hypoesthesia. Participants were 21 healthy right-handed men (20-33 years), randomly assigned to a normal temperature group (NML-group; n = 11) or cold-induced plantar hypoesthesia group (COLD-group; n = 10). Participants performed two standing tasks with their eyes closed: 1) stand upright with the feet comfortably apart (normal standing); and 2) with the feet together in a side-by-side stance (Romberg standing)...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
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