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porcine cardiac arrest

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https://www.readbyqxmd.com/read/28625244/-establishment-of-porcine-model-of-prolonged-cardiac-arrest-and-cardiopulmonary-resuscitation-electrically-induced-by-ventricular-fibrillation
#1
Cai Wen, Heng Li, Xiaozhu Zhai, Youde Ding, Huatao Zhou, Zhiming Ouyang, Zhengfei Yang, Longyuan Jiang, Wanchun Tang, Tao Yu
OBJECTIVE: To investigate the optimal injury time point of cardiac arrest (CA) induced electrically, and establish a reproducible prolonged CA and cardiopulmonary resuscitation (CPR) model in pigs. METHODS: Forty healthy domestic male pigs were randomly divided into four groups, which were ventricular fibrillation (VF) 8, 10, 11, and 12 minutes groups, each group for 10 animals. In these groups, VF was induced by alternating current delivered to right ventricular endocardium and untreated for 8, 10, 11, and 12 minutes, respectively, followed by 6 minutes of CPR procedure...
June 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28584212/variations-of-postresuscitation-lung-function-after-thrombolysis-therapy-in-a-cardiac-arrest-porcine-model-caused-by-pulmonary-thromboembolism
#2
Jun Yang, Lian-Xing Zhao, Chun-Sheng Li, Nan Tong, Hong-Li Xiao, Le An
BACKGROUND: Study of lung function in survivor from cardiac arrest (CA) caused by pulmonary thromboembolism (PTE) was rare. The aim of this study was to investigate the variations of postresuscitation lung function after thrombolysis treatment in a CA porcine model caused by PTE. METHODS: After 2 min of untreated CA, pigs of 10-12 weeks with a weight of 30 ± 2 kg (n = 24) were treated with recombinant human tissue plasminogen activator (50 mg). Cardiopulmonary resuscitation (CPR) and ventilation were initiated after drug administration...
June 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28562475/duration-of-untreated-cardiac-arrest-and-clinical-relevance-of-animal-experiments-the-relationship-between-the-no-flow-duration-and-the-severity-of-post-cardiac-arrest-syndrome-in-a-porcine-model
#3
Gioanni Babini, Luigi Grassi, Ilaria Russo, Deborah Novelli, Antonio Boccardo, Anita Luciani, Francesca Fumagalli, Lidia Staszewsky, Fabio Fiordaliso, Marcella De Maglie, Monica Salio, Davide Danilo Zani, Teresa Letizia, Serge Masson, Mario Vittorio Luini, Davide Pravettoni, Eugenio Scanziani, Roberto Latini, Giuseppe Ristagno
INTRODUCTION: The study investigated the effect of untreated cardiac arrest (CA), i.e. "no-flow" time, on post-resuscitation myocardial and neurological injury, and survival in a pig model to identify an optimal duration that adequately reflects the most frequent clinical scenario. METHODS: An established model of myocardial infarction followed by CA and cardiopulmonary resuscitation was used. Twenty-two pigs were subjected to 3 no-flow durations: short (8-10 min); intermediate (12-13 min); and long (14-15 min)...
May 30, 2017: Shock
https://www.readbyqxmd.com/read/28555810/reduced-right-ventricular-diameter-during-cardiac-arrest-caused-by-tension-pneumothorax-a-porcine-ultrasound-study
#4
P Caap, R Aagaard, E Sloth, B Løfgren, A Granfeldt
INTRODUCTION: Advanced life support (ALS) guidelines recommend ultrasound to identify reversible causes of cardiac arrest. Right ventricular (RV) dilatation during cardiac arrest is commonly interpreted as a sign of pulmonary embolism. The RV is thus a focus of clinical ultrasound examination. Importantly, in animal studies ventricular fibrillation and hypoxia results in RV dilatation. Tension pneumothorax (tPTX) is another reversible cause of cardiac arrest, however, the impact on RV diameter remains unknown...
May 28, 2017: Acta Anaesthesiologica Scandinavica
https://www.readbyqxmd.com/read/28521971/comparison-of-early-sequential-hypothermia-and-delayed-hypothermia-on-neurological-function-after-resuscitation-in-a-swine-model
#5
Wei Yuan, Jun-Yuan Wu, Yong-Zhen Zhao, Jie Li, Jie-Bin Li, Zhen-Hua Li, Chun-Sheng Li
BACKGROUND: We utilized a porcine cardiac arrest model to compare early sequential hypothermia (ESH) with delayed hypothermia (DH) and no hypothermia (NH) to investigate the different effects on cerebral function after resuscitation. METHODS: After return of spontaneous circulation (ROSC), resuscitated 24 pigs divided into three groups. The ESH group implemented early sequential hypothermia immediately, and the DH group implemented delayed hypothermia at 1 h after ROSC...
May 11, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28483262/lungs-donated-after-circulatory-death-and-prolonged-warm-ischemia-are-transplanted-successfully-after-enhanced-ex%C3%A2-vivo-lung-perfusion-using-adenosine-a2b-receptor-antagonism
#6
Eric J Charles, J Hunter Mehaffey, Ashish K Sharma, Yunge Zhao, Mark H Stoler, James M Isbell, Christine L Lau, Curtis G Tribble, Victor E Laubach, Irving L Kron
OBJECTIVE: The current supply of acceptable donor lungs is not sufficient for the number of patients awaiting transplantation. We hypothesized that ex vivo lung perfusion (EVLP) with targeted drug therapy would allow successful rehabilitation and transplantation of donation after circulatory death lungs exposed to 2 hours of warm ischemia. METHODS: Donor porcine lungs were procured after 2 hours of warm ischemia postcardiac arrest and subjected to 4 hours of cold preservation or EVLP...
April 12, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28434264/exploring-effects-of-remote-ischemic-preconditioning-in-a-pig-model-of-hypothermic-circulatory-arrest
#7
Johanna Herajärvi, Tuomas Anttila, Elitsa Y Dimova, Tuomas Laukka, Mikko Myllymäki, Henri Haapanen, Benjamin A Olenchock, Hannu Tuominen, Ulla Puistola, Peeter Karihtala, Kai Kiviluoma, Peppi Koivunen, Vesa Anttila, Tatu Juvonen
OBJECTIVES: During aortic and cardiac surgery, risks for mortality and morbidity are inevitable. Surgical setups involving deep hypothermic circulatory arrest (DHCA) are effective to achieve organ protection against ischemic injury. The aim of this study was to identify humoural factors mediating additive protective effects of remote ischemic preconditioning (RIPC) in a porcine model of DHCA. DESIGN: Twenty-two pigs were randomized into the RIPC group (n = 11) and the control group (n = 11)...
April 24, 2017: Scandinavian Cardiovascular Journal: SCJ
https://www.readbyqxmd.com/read/28430698/the-right-ventricle-is-dilated-during-resuscitation-from-cardiac-arrest-caused-by-hypovolemia-a-porcine-ultrasound-study
#8
Rasmus Aagaard, Asger Granfeldt, Morten T Bøtker, Troels Mygind-Klausen, Hans Kirkegaard, Bo Løfgren
OBJECTIVES: Dilation of the right ventricle during cardiac arrest and resuscitation may be inherent to cardiac arrest rather than being associated with certain causes of arrest such as pulmonary embolism. This study aimed to compare right ventricle diameter during resuscitation from cardiac arrest caused by hypovolemia, hyperkalemia, or primary arrhythmia (i.e., ventricular fibrillation). DESIGN: Thirty pigs were anesthetized and then randomized to cardiac arrest induced by three diffrent methods...
April 20, 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28405859/effects-of-mild-hypothermia-on-cerebral-large-and-small-microvessels-blood-flow-in-a-porcine-model-of-cardiac-arrest
#9
Junyuan Wu, Wei Yuan, Jiebin Li, Yongzhen Zhao, Jie Li, Zhenhua Li, Chunsheng Li
BACKGROUND: The effect of mild hypothermia (MH) on microcirculation after resuscitation from cardiac arrest is controversial. The aim of this study was to determine whether MH improves or aggravates the disturbance of cerebral microcirculation. METHODS: Twenty domestic male pigs were randomized into the MH group (n = 8), non-hypothermia (NH) group (n = 8) or sham operation group (n = 4). In the MH group, the animals were initiated rapid intravascular cooling at 1 h after return of spontaneous circulation (ROSC) from 8 min ventricular fibrillation, and the core temperature was reduced to 33 °C for 12 h and then rewarmed to 37 °C...
April 12, 2017: Neurocritical Care
https://www.readbyqxmd.com/read/28385449/centhaquin-effects-in-a-swine-model-of-ventricular-fibrillation-centhaquin-and-cardiac-arrest
#10
Konstantina Papalexopoulou, Athanasios Chalkias, Paraskevi Pliatsika, Apostolos Papalois, Panagiotis Papapanagiotou, Georgios Papadopoulos, Eleni Arnaoutoglou, Anastasios Petrou, Anil Gulati, Theodoros Xanthos
BACKGROUND: Centhaquin citrate is a novel agent being developed for use in the treatment of haemorrhagic shock. The aim of our study was to assess whether the administration of centhaquin would improve initial resuscitation success, 24-hour survival, and neurologic outcome compared with adrenaline alone in a porcine model of ventricular fibrillation. METHODS: Ventricular fibrillation was induced in 20 healthy Landrace/Large White piglets. The animals were randomised to receive placebo plus adrenaline 0...
December 19, 2016: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/28361585/featured-article-pyruvate-preserves-antiglycation-defenses-in-porcine-brain-after-cardiac-arrest
#11
Gary F Scott, Anh Q Nguyen, Brandon H Cherry, Roger A Hollrah, Isabella Salinas, Arthur G Williams, Myoung-Gwi Ryou, Robert T Mallet
Cardiac arrest (CA) and cardiocerebral resuscitation (CCR)-induced ischemia-reperfusion imposes oxidative and carbonyl stress that injures the brain. The ischemic shift to anaerobic glycolysis, combined with oxyradical inactivation of glyceraldehyde 3-phosphate dehydrogenase (GAPDH), provokes excessive formation of the powerful glycating agent, methylglyoxal. The glyoxalase (GLO) system, comprising the enzymes glyoxalase 1 (GLO1) and GLO2, utilizes reduced glutathione (GSH) supplied by glutathione reductase (GR) to detoxify methylglyoxal resulting in reduced protein glycation...
May 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28329148/myocardial-energy-metabolism-and-ultrastructure-with-polarizing-and-depolarizing-cardioplegia-in-a-porcine-model%C3%A2
#12
Terje Aass, Lodve Stangeland, David J Chambers, Seth Hallström, Christine Rossmann, Bruno K Podesser, Malte Urban, Knut Nesheim, Rune Haaverstad, Knut Matre, Ketil Grong
OBJECTIVES: This study investigated whether the novel St. Thomas' Hospital polarizing cardioplegic solution (STH-POL) with esmolol/adenosine/magnesium offers improved myocardial protection by reducing demands for high-energy phosphates during cardiac arrest compared to the depolarizing St. Thomas' Hospital cardioplegic solution No 2 (STH-2). METHODS: Twenty anaesthetised pigs on tepid cardiopulmonary bypass were randomized to cardiac arrest for 60 min with antegrade freshly mixed, repeated, cold, oxygenated STH-POL or STH-2 blood cardioplegia every 20 min...
March 2, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28285861/cardioprotective-effect-of-nicorandil-against-myocardial-injury-following-cardiac-arrest-in-swine
#13
Li-Ning Liang, Xia Zhong, Yi Zhou, Zhi-Qiang Hou, Hao-Ran Hu, Fang-Fang Zhu, Ji-Bin Chen, Xian-Fei Ji, De-Ya Shang
INTRODUCTION: Nicorandil, a vasodilatory drug used to treat angina, was reported to protect against myocardial ischemia-reperfusion injury in various animal models. However, its cardioprotective action following cardiac arrest is unknown. We examined the cardioprotective effects of nicorandil in a porcine model of cardiac arrest and resuscitation. METHODS: Ventricular fibrillation was induced electrically for 4min in anesthetized domestic swine, followed by cardiopulmonary resuscitation...
March 6, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28241962/a-method-to-differentiate-between-ventricular-fibrillation-and-asystole-during-chest-compressions-using-artifact-corrupted-ecg-alone
#14
Guang Zhang, Taihu Wu, Zongming Wan, Zhenxing Song, Ming Yu, Dan Wang, Liangzhe Li, Feng Chen, Xinxi Xu
In recent years, numerous adaptive filtering techniques have been developed to suppress the chest compression (CC) artifact for reliable analysis of the electrocardiogram (ECG) rhythm without CC interruption. Unfortunately, the result of rhythm diagnosis during CCs is still unsatisfactory in many studies. The misclassification between corrupted asystole (ASY) and corrupted ventricular fibrillation (VF) is generally regarded as one of the major reasons for the poor performance of reported methods. In order to improve the diagnosis of VF/ASY corrupted by CCs, a novel method combining a least mean-square (LMS) filter and an amplitude spectrum area (AMSA) analysis was developed based only on the analysis of the surface of the corrupted ECG episode...
April 2017: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/28215591/the-effect-of-resuscitation-position-on-cerebral-and-coronary-perfusion-pressure-during-mechanical-cardiopulmonary-resuscitation-in-porcine-cardiac-arrest-model
#15
Taeyun Kim, Sang Do Shin, Kyoung Jun Song, Yong Joo Park, Hyun Ho Ryu, Guillaume Debaty, Keith Lurie, Ki Jeong Hong
OBJECTIVE: It is unknown whether patient position is associated with the optimal cerebral (CePP) and coronary (CoPP) perfusion pressure. METHODS: This study utilized a randomized experimental design and anesthetized, intubated and paralyzed female pigs (n=12) (mean 42, SD 3kg). After 6min of untreated ventricular fibrillation, mechanical CPR with was performed for 3min in 0° supine position. The CPR was then performed for 5min in a position randomly assigned to either 1) head-up tilt (HUT) by three angles (30°, 45°, or 60°) or 2) head-down tilt (HDT) by three angles (30°, 45°, or 60°) and at 3) supine position between HUT and HDT positions...
April 2017: Resuscitation
https://www.readbyqxmd.com/read/28202293/therapeutic-hypothermia-attenuates-brain-edema-in-a-pig-model-of-cardiac-arrest-possible-role-of-the-angiopoietin-tie-2-system
#16
Jiebin Li, ChunSheng Li, Wei Yuan, JunYuan Wu, Jie Li, ZhenHua Li, YongZhen Zhao
OBJECTIVE: This study aimed to clarify whether therapeutic hypothermia protects against cerebral edema following cardiac arrest (CA) and cardiopulmonary resuscitation (CPR) in a porcine model via regulating the angiopoietin-Tie-2 ligand-receptor system. METHODS: Male pigs were randomized into the therapeutic hypothermia group, the normothermia group or the sham control group. CA was induced in pigs by untreated ventricular fibrillation for 8min. Brain edema was determined by measuring the cerebral cortical water content at 24h after the return of spontaneous circulation (ROSC)...
February 6, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28166944/recover-of-peripheral-nerve-function-after-prolong-hypothermic-cardiac-arrest-in-a-porcine-model-with-extra-corporeal-life-support
#17
Benedict Kjaergaard, Cristian Sevcencu, Sigridur Olga Magnusdottir, Henrik Bygum Krarup, Thomas Nørgaard Nielsen
OBJECTIVES: Surviving long lasting cardiac arrest following accidental hypothermia has been reported after treatment with extra corporeal life support (ECLS), but there is a risk of neurologic injury. Most surviving hypothermia patients have a prolonged stay in the intensive care unit, where most patients experience polyneuropathy. Theoretically, accidental hypothermic cardiac arrest may in itself contribute to polyneuropathy. This study was designed to examine the impact of three hours of cardiac arrest at a core temperature of 20°C followed by reanimation of peripheral nerve function...
February 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28140441/effects-of-humerus-intraosseous-versus-intravenous-amiodarone-administration-in-a-hypovolemic-porcine-model
#18
Cpt Monica M Holloway, Cpt Shannan L Jurina, Cpt Joshua D Orszag, Lt George R Bragdon, Lt Rustin D Green, Jose C Garcia-Blanco, Brian E Benham, Ltc Timothy S Adams, Don Johnson
OBJECTIVE: To compare the effects of amiodarone administration by humerus intraosseous (HIO) and intravenous (IV) routes on return of spontaneous circulation (ROSC), time to maximum concentration (Tmax), maximum plasma drug concentration (Cmax), time to ROSC, and mean concentrations over time in a hypovolemic cardiac arrest model. DESIGN: Prospective, between subjects, randomized experimental design. SETTING: TriService Research Facility. SUBJECTS: Yorkshire-cross swine (n = 28)...
2016: American Journal of Disaster Medicine
https://www.readbyqxmd.com/read/28131602/correlation-of-impedance-threshold-device-use-during-cardiopulmonary-resuscitation-with-post-cardiac-arrest-acute-kidney-injury
#19
Panagiota Niforopoulou, Nicoletta Iacovidou, Pavlos Lelovas, George Karlis, Αpostolos Papalois, Spyros Siakavellas, Vasileios Spapis, George Kaparos, Ioanna Siafaka, Theodoros Xanthos
PURPOSE: To assess whether use of Impedance Threshold Device (ITD) during cardiopulmonary resuscitation (CPR) reduces the degree of post-cardiac arrest Acute Kidney Injury (AKI), as a result of improved hemodynamics, in a porcine model of ventricular fibrillation (VF) cardiac arrest. METHODS: After 8 min of untreated cardiac arrest, the animals were resuscitated either with active compression-decompression (ACD) CPR plus a sham ITD (control group, n=8) or with ACD-CPR plus an active ITD (ITD group, n=8)...
January 23, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28129317/a-novel-treatment-using-an-intraventricular-stent-graft-for-postinfarction-ventricular-septal-rupture-in-a-porcine-model
#20
Yuji Nishida, Shigeyuki Tomita, Ryuta Kiuchi, Hiroshi Ohtake, Go Watanabe
OBJECTIVE: Ventricular septal rupture (VSR) is a severe complication of acute myocardial infarction, and the conventional technique for repair is associated with high operative mortality. A novel intraventricular stent graft (IVSG) device was tested as a less invasive treatment for VSR; it does not require cardiopulmonary bypass, cardiac arrest, or left ventricular incision. Its effectiveness was assessed using animal experiments. METHODS: Six pigs were placed on cardiopulmonary bypass...
January 2017: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
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