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https://www.readbyqxmd.com/read/28480030/drug-enhanced-carbon-monoxide-production-from-heme-by-cytochrome-p450-reductase
#1
Dragic Vukomanovic, Mona N Rahman, Zongchao Jia, Kanji Nakatsu
Carbon monoxide (CO) formed endogenously is considered to be cytoprotective, and the vast majority of CO formation is attributed to the degradation of heme by heme oxygenases-1 and -2 (HO-1, HO-2). Previously, we observed that brain microsomes containing HO-2 produced many-fold more CO in the presence of menadione and its congeners; herein we explored these observations further. We determined the effects of various drugs on CO production of rat brain microsomes and recombinant human cytochrome P450 reductase (CPR); CO was measured by gas chromatography with reductive detection...
January 2017: Medical Gas Research
https://www.readbyqxmd.com/read/28438718/the-effect-of-50-compared-to-100-inspired-oxygen-fraction-on-brain-oxygenation-and-post-cardiac-arrest-mitochondrial-function-in-experimental-cardiac-arrest
#2
Annika Nelskylä, Jouni Nurmi, Milla Jousi, Alexey Schramko, Eero Mervaala, Giuseppe Ristagno, Markus B Skrifvars
BACKGROUND AND AIM: We hypothesised that the use of 50% compared to 100% oxygen maintains cerebral oxygenation and ameliorates the disturbance of cardiac mitochondrial respiration during cardiopulmonary resuscitation (CPR). METHODS: Ventricular fibrillation (VF) was induced electrically in anaesthetised healthy adult pigs and left untreated for seven minutes followed by randomisation to manual ventilation with 50% or 100% oxygen and mechanical chest compressions (LUCAS(®))...
April 22, 2017: Resuscitation
https://www.readbyqxmd.com/read/28423065/association-of-body-mass-index-with-clinical-outcomes-for-in-hospital-cardiac-arrest-adult-patients-following-extracorporeal-cardiopulmonary-resuscitation
#3
Eunmi Gil, Soo Jin Na, Jeong-Am Ryu, Dae-Sang Lee, Chi Ryang Chung, Yang Hyun Cho, Kyeongman Jeon, Kiick Sung, Gee Young Suh, Jeong Hoon Yang
BACKGROUND: Obesity might be associated with disturbance of cannulation in situation of extracorporeal cardiopulmonary resuscitation (ECPR). However, limited data are available on obesity in the setting of ECPR. Therefore, we investigated the association between body mass index (BMI) and clinical outcome in patients underwent ECPR. METHODS: From January 2004 to December 2013, in-hospital cardiac arrest patients who had ECPR were enrolled from a single-center registry...
2017: PloS One
https://www.readbyqxmd.com/read/28422817/incidence-and-implications-of-left-ventricular-distention-during-venoarterial-extracorporeal-membrane-oxygenation-support
#4
Lauren K Truby, Koji Takeda, Christine Mauro, Melana Yuzefpolskaya, Arthur R Garan, Ajay J Kirtane, Veli K Topkara, Darryl Abrams, Daniel Brodie, Paolo C Colombo, Yoshifumi Naka, Hiroo Takayama
Left ventricular distention (LVD) during venoarterial extracorporeal membrane oxygenation (VA-ECMO) support is increasingly recognized but seldom reported in the literature. The current study defined LVD as not present (LVD-); subclinical (LVD+, evidence of pulmonary edema on chest radiograph AND pulmonary artery diastolic blood pressure greater than 25 mm Hg within the first 2 hours of intensive care unit admission); or clinical (LVD++, need for decompression of the left ventricle immediately following VA-ECMO initiation)...
May 2017: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/28412053/-the-prognostic-value-of-cerebral-oxygen-saturation-measurement-for-assessing-prognosis-after-cardiopulmonary-resuscitation
#5
Mehmet Turan Inal, Dilek Memiş, Ilker Yıldırım, Hüseyin Uğur, Aysegul Erkaymaz, F Nesrin Turan
BACKGROUND: Despite new improvements on cardiopulmonary resuscitation (CPR), brain damage is very often after resuscitation. OBJECTIVE: To assess the prognostic value of cerebral oxygen saturation measurement (rSO2) for assessing prognosis on patients after cardiopulmonary resuscitation. DESIGN: Retrospective analysis. MEASUREMENTS AND RESULTS: We analyzed 25 post-CPR patients (12 female and 13 male). All the patients were cooled to a target temperature of 33-34°C...
April 12, 2017: Revista Brasileira de Anestesiologia
https://www.readbyqxmd.com/read/28408349/early-effects-of-prolonged-cardiac-arrest-and-ischemic-postconditioning-during-cardiopulmonary-resuscitation-on-cardiac-and-brain-mitochondrial-function-in-pigs
#6
Timothy R Matsuura, Jason A Bartos, Adamantios Tsangaris, Kadambari Chandra Shekar, Matthew D Olson, Matthias L Riess, Martin Bienengraeber, Tom P Aufderheide, Robert W Neumar, Jennifer N Rees, Scott H McKnite, Anna E Dikalova, Sergey I Dikalov, Hunter F Douglas, Demetris Yannopoulos
BACKGROUND: Out-of-hospital cardiac arrest (CA) is a prevalent medical crisis resulting in severe injury to the heart and brain and an overall survival of less than 10%. Mitochondrial dysfunction is predicted to be a key determinant of poor outcomes following prolonged CA. However, the onset and severity of mitochondrial dysfunction during CA and cardiopulmonary resuscitation (CPR) is not fully understood. Ischemic postconditioning (IPC), controlled pauses during the initiation of CPR, has been shown to improve cardiac function and neurologically favorable outcomes after 15min of CA...
April 10, 2017: Resuscitation
https://www.readbyqxmd.com/read/28383297/supportive-technology-in-the-resuscitation-of-out-of-hospital-cardiac-arrest-patients
#7
Scott T Youngquist, Kenneth A Scheppke, Paul E Pepe
PURPOSE OF REVIEW: To discuss the increasing value of technological tools to assess and augment the quality of cardiopulmonary resuscitation (CPR) and, in turn, improve chances of surviving out-of-hospital cardiac arrest (OHCA). RECENT FINDINGS: After decades of disappointing survival rates, various emergency medical services systems worldwide are now seeing a steady rise in OHCA survival rates guided by newly identified 'sweet spots' for chest compression rate and chest compression depth, aided by monitoring for unnecessary pauses in chest compressions as well as methods to better ensure full-chest recoil after compressions...
June 2017: Current Opinion in Critical Care
https://www.readbyqxmd.com/read/28380491/association-between-brain-and-kidney-near-infrared-spectroscopy-and-early-postresuscitation-mortality-in-asphyxiated-newborn-piglets
#8
Anne Lee Solevåg, Georg M Schmölzer, Britt Nakstad, Ola Didrik Saugstad, Po-Yin Cheung
BACKGROUND: Early outcome predictors after delivery room cardiopulmonary resuscitation (CPR) of asphyxiated newborns are needed. OBJECTIVES: To investigate if cerebral (rScO2) and renal (rSrO2) tissue oxygen saturation 30 min after return of spontaneous circulation (ROSC) are different between surviving versus nonsurviving piglets with asphyxia-induced cardiac arrest and CPR. Further, to investigate the relationship of rScO2 and rSrO2 to cardiac output (CO), blood pressure (BP), and biochemical variables 30 min and 4 h after ROSC...
April 6, 2017: Neonatology
https://www.readbyqxmd.com/read/28349529/continuous-chest-compression-versus-interrupted-chest-compression-for-cardiopulmonary-resuscitation-of-non-asphyxial-out-of-hospital-cardiac-arrest
#9
REVIEW
Lei Zhan, Li J Yang, Yu Huang, Qing He, Guan J Liu
BACKGROUND: Out-of-hospital cardiac arrest (OHCA) is a major cause of death worldwide. Cardiac arrest can be subdivided into asphyxial and non asphyxial etiologies. An asphyxia arrest is caused by lack of oxygen in the blood and occurs in drowning and choking victims and in other circumstances. A non asphyxial arrest is usually a loss of functioning cardiac electrical activity. Cardiopulmonary resuscitation (CPR) is a well-established treatment for cardiac arrest. Conventional CPR includes both chest compressions and 'rescue breathing' such as mouth-to-mouth breathing...
March 27, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28323084/integration-of-in-hospital-cardiac-arrest-contextual-curriculum-into-a-basic-life-support-course-a-randomized-controlled-simulation-study
#10
Elizabeth A Hunt, Jordan M Duval-Arnould, Nnenna O Chime, Kareen Jones, Michael Rosen, Merona Hollingsworth, Deborah Aksamit, Marida Twilley, Cheryl Camacho, Daniel P Nogee, Julianna Jung, Kristen Nelson-McMillan, Nicole Shilkofski, Julianne S Perretta
OBJECTIVE: The objective was to compare resuscitation performance on simulated in-hospital cardiac arrests after traditional American Heart Association (AHA) Healthcare Provider Basic Life Support course (TradBLS) versus revised course including in-hospital skills (HospBLS). DESIGN: This study is a prospective, randomized, controlled curriculum evaluation. SETTING: Johns Hopkins Medicine Simulation Center. SUBJECTS: One hundred twenty-two first year medical students were divided into fifty-nine teams...
May 2017: Resuscitation
https://www.readbyqxmd.com/read/28302943/cerebral-hemodynamics-and-metabolism-during-cardiac-arrest-and-cardiopulmonary-resuscitation-using-hyperspectral-near-infrared-spectroscopy
#11
Reyhaneh Nosrati, Steve Lin, Andrew Ramadeen, Dena Monjazebi, Paul Dorian, Vladislav Toronov
BACKGROUND: Maintaining cerebral oxygen delivery and metabolism during cardiac arrest (CA) through resuscitation is essential to improve the survival rate while avoiding brain injury. The effect of CA and cardiopulmonary resuscitation (CPR) on cerebral and muscle oxygen delivery and metabolism is not clearly quantified.Methods and Results:A novel hyperspectral near-infrared spectroscopy (hNIRS) technique was developed and evaluated to measure cerebral oxygen delivery and aerobic metabolism during ventricular fibrillation (VF) CA and CPR in 14 pigs...
March 10, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28291665/cardiac-arrest-in-acute-myocardial-infarction-concept-of-circulatory-support-with-mechanical-chest-compression-and-impella-to-facilitate-percutaneous-coronary-intervention
#12
Kaleab N Asrress, Maciej Marciniak, Natalia Briceno, Divaka Perera
Cardiogenic shock in the context of acute ST-elevation myocardial infarction (STEMI) remains a challenge to manage and results in significant mortality and morbidity, cardiac arrest in this setting even more so. The increase in myocardial oxygen demand and consumption with the use of inotropes is recognised as increasing mortality. Alternatives include the intra-aortic balloon pump (IABP), which has yet to be shown to improve outcomes, and extracorporeal membrane oxygenation (ECMO), which requires super-specialised techniques not widely available...
February 28, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/28259482/accuracy-of-postresuscitation-team-debriefings-in-a-pediatric-emergency-department
#13
Paul C Mullan, Niall H Cochrane, James M Chamberlain, Randall S Burd, Fawn D Brown, Lauren E Zinns, Kristen M Crandall, Karen J O'Connell
STUDY OBJECTIVE: Guideline committees recommend postresuscitation debriefings to improve performance. "Hot" postresuscitation debriefings occur immediately after the event and rely on team recall. We assessed the ability of resuscitation teams to recall their performance in team-based, hot debriefings in a pediatric emergency department (ED), using video review as the criterion standard. We hypothesized that debriefing accuracy will improve during the course of the study. METHODS: Resuscitation physician and nurse leaders cofacilitated debriefings after ED resuscitations involving cardiopulmonary resuscitation (CPR) or intubation...
March 1, 2017: Annals of Emergency Medicine
https://www.readbyqxmd.com/read/28253519/reliability-of-pulse-oximetry-during-progressive-hypoxia-cardiopulmonary-resuscitation-and-recovery-in-a-piglet-model-of-neonatal-hypoxic-cardiac-arrest
#14
Mohammad Ahmad Hassan, Claudia Weber, Markus Waitz, Li Huang, Helmut D Hummler, Marc Robin Mendler
BACKGROUND: Pulse oximetry is widely used in intensive care and emergency conditions to monitor arterial oxygenation and to guide oxygen therapy. OBJECTIVE: To study the reliability of pulse oximetry in comparison with CO-oximetry in newborn piglets during progressive hypoxia, cardiac arrest, cardiopulmonary resuscitation (CPR), and after return of spontaneous circulation (ROSC). METHODS: Thirty-three newborn piglets were exposed to hypoxia until asystole occurred and then resuscitated until ROSC...
March 3, 2017: Neonatology
https://www.readbyqxmd.com/read/28187154/comparison-of-different-inspiratory-triggering-settings-in-automated-ventilators-during-cardiopulmonary-resuscitation-in-a-porcine-model
#15
Dingyu Tan, Jun Xu, Shihuan Shao, Yangyang Fu, Feng Sun, Yazhi Zhang, Yingying Hu, Joseph Walline, Huadong Zhu, Xuezhong Yu
BACKGROUND: Mechanical ventilation via automated in-hospital ventilators is quite common during cardiopulmonary resuscitation. It is not known whether different inspiratory triggering sensitivity settings of ordinary ventilators have different effects on actual ventilation, gas exchange and hemodynamics during resuscitation. METHODS: 18 pigs enrolled in this study were anaesthetized and intubated. Continuous chest compressions and mechanical ventilation (volume-controlled mode, 100% O2, respiratory rate 10/min, and tidal volumes 10ml/kg) were performed after 3 minutes of ventricular fibrillation...
2017: PloS One
https://www.readbyqxmd.com/read/28074817/extracorporeal-membrane-oxygenation-for-refractory-cardiac-arrest
#16
REVIEW
Steven A Conrad, Peter T Rycus
Extracorporeal cardiopulmonary resuscitation (ECPR) is the use of rapid deployment venoarterial (VA) extracorporeal membrane oxygenation to support systemic circulation and vital organ perfusion in patients in refractory cardiac arrest not responding to conventional cardiopulmonary resuscitation (CPR). Although prospective controlled studies are lacking, observational studies suggest improved outcomes compared with conventional CPR when ECPR is instituted within 30-60 min following cardiac arrest. Adult and pediatric patients with witnessed in-hospital and out-of-hospital cardiac arrest and good quality CPR, failure of at least 15 min of conventional resuscitation, and a potentially reversible cause for arrest are candidates...
January 2017: Annals of Cardiac Anaesthesia
https://www.readbyqxmd.com/read/28045013/extracorporeal-cardiopulmonary-resuscitation-for-refractory-cardiac-arrest-in-children-after-cardiac-surgery
#17
Ersin Erek, Selim Aydın, Dilek Suzan, Okan Yıldız, Fırat Altın, Barış Kırat, Ibrahim Halil Demir, Ender Ödemiş
OBJECTIVE: Extracorporeal membrane oxygenation (ECMO) is used to provide cardiorespiratory support during cardiopulmonary resuscitation (extracorporeal cardiopulmonary resuscitation; ECPR) unresponsive to conventional methods. In this study, the results of ECPR in a cardiac arrest setting after cardiac surgery in children were analyzed. METHODS: In this retrospective cohort study, between November 2010 and June 2014, 613 congenital heart operations were performed by the same surgical team...
March 3, 2016: Anatolian Journal of Cardiology
https://www.readbyqxmd.com/read/28040652/enhancing-saccharomyces-cerevisiae-reactive-oxygen-species-and-ethanol-stress-tolerance-for-high-level-production-of-protopanoxadiol
#18
Fanglong Zhao, Yanhui Du, Peng Bai, Jingjing Liu, Wenyu Lu, Yingjin Yuan
Protopanaxadiol (PPD) is an active compound in Panax ginseng. Recently, an optimized PPD synthesis pathway contained a ROS releasing step (a P450-type PPD synthase, PPDS) was introduced into Saccharomyces cerevisiae. Here reported a synergistic effect of PPDS-CPR (CPR, cytochrome P450 reductase) uncoupling and ethanol stress on ROS releasing, which reduced cells viability. To build a robust strain, a cell wall integrity associated gene SSD1 was high-expressed to improve ethanol tolerance, and ROS level decreased for 24...
March 2017: Bioresource Technology
https://www.readbyqxmd.com/read/27993632/ecmo-cardio-pulmonary-resuscitation-ecpr-trends-in-survival-from-an-international-multicentre-cohort-study-over-12-years
#19
Alexander Sacha C Richardson, Matthieu Schmidt, Michael Bailey, Vincent A Pellegrino, Peter T Rycus, David V Pilcher
BACKGROUND: Use of Extracorporeal Membrane Oxygenation during cardiopulmonary resuscitation (ECPR) is increasingly being deployed as an adjunct to conventional CPR. It is unknown if this has been associated with improved outcomes. AIMS: To describe trends in survival and patient demographics for ECPR patients in the international Extracorporeal Life Support Organisation (ELSO) database over the past 12 years and identify factors associated with changes in survival...
March 2017: Resuscitation
https://www.readbyqxmd.com/read/27885446/post-cardiotomy-rescue-extracorporeal-cardiopulmonary-resuscitation-in-neonates-with-single-ventricle-after-intractable-cardiac-arrest-attrition-after-hospital-discharge-and-predictors-of-outcome
#20
Anastasios C Polimenakos, Vincent Rizzo, Chawki F El-Zein, Michel N Ilbawi
Extracorporeal cardiopulmonary resuscitation (ECPR) in children with cardiac arrest refractory to conventional cardiopulmonary resuscitation (CPR) has been reported with encouraging results. We reviewed outcomes of neonates with functional single ventricle (FSV) surviving post-cardiotomy ECPR after hospital discharge. Fifty-eight patients who required post-cardiotomy extracorporeal membrane oxygenation (ECMO) since the introduction of our ECPR protocol (January 2007-December 2011) were identified. Forty-one were neonates...
February 2017: Pediatric Cardiology
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