Evaluating the effectiveness of resuscitation with extracorporeal membrane oxygenation in a model of acute hypoxic cardiac arrest in pigs (experimental study)

2014 ◽  
Vol 5 (4) ◽  
pp. 20-26
Author(s):  
Gennadiy Grigoryevich Khubulava ◽  
Aleksey Borisovich Naumov ◽  
Sergey Pavlovich Marchenko ◽  
Vitaliy Vladimirovich Suvorov ◽  
Igor Igorevich Averkin ◽  
...  

Cardiopulmonary resuscitation (CPR) with closed-chest cardiac massage was developed to maintain circulation and ventilation until life-threatening problems could be corrected or reversed. Studies on the effect of CPR have shown that about 80-95 % cases of resuscitation are fatal or severe neurological consequences and survival to discharge after CPR ranged from 6 to 22 % [2, 4, 8, 11]. Furthermore, the chances of survival decline rapidly if the resuscitation period more than 10 minute. At the same time, we know that successful neurologic outcomes are inversely associated with the time of brain hypoperfusion. Because of the low survival rate after prolonged CPR, more aggressive methods have been suggested to increase success. With the advancement of techniques, extracorporeal mechanical support has been applied in conjunction with CPR, with variable results [5, 12]. To assess the efficacy of resuscitation with extracorporeal membrane oxygenation was modeled the acute hypoxic cardiac arrest in pigs. Results of the study in the two groups demonstrate efficient switching method supporting circulatory support (ECMO) in the minutes of CPR. In the provision of an extended set of measures of cardiopulmonary resuscitation in the modeling of hypoxic cardiac arrest in animals in the group with ECMO received great survival to the end of the experiment, less expressed manifestations of acute heart failure. Intergroup comparison given the prerequisites for the development of protocols with the use of ECMO CPR, which would reduce the number of complications and death in patients undergoing cardiac surgery.

Perfusion ◽  
2018 ◽  
Vol 33 (7) ◽  
pp. 597-598 ◽  
Author(s):  
Juan Lehoux ◽  
Zachary Hena ◽  
Megan McCabe ◽  
Giles Peek

Aluminium phosphide (AP) is a pesticide used against rodents and insects. Exposure of AP to water releases phosphine gas. Phosphine is a highly toxic mitochondrial poison to which there is no known antidote. We report a case of a 3-year-old female with accidental home exposure to AP, which resulted in cardiac arrest, who was successfully supported with extracorporeal membrane oxygenation (ECMO).


2015 ◽  
Vol 35 (1) ◽  
pp. 60-69 ◽  
Author(s):  
Jennie Ryan

Extracorporeal cardiopulmonary resuscitation (ECPR) remains a promising treatment for pediatric patients in cardiac arrest unresponsive to traditional cardiopulmonary resuscitation. With venoarterial extracorporeal support, blood is drained from the right atrium, oxygenated through the extracorporeal circuit, and transfused back to the body, bypassing the heart and lungs. The use of artificial oxygenation and perfusion thus provides the body a period of hemodynamic stability, while allowing resolution of underlying disease processes. Survival rates for ECPR patients are higher than those for traditional cardiopulmonary resuscitation (CPR), although neurological outcomes require further investigation. The impact of duration of CPR and length of treatment with extracorporeal membrane oxygenation vary in published reports. Furthermore, current guidelines for the initiation and use of ECPR are limited and may lead to confusion about appropriate use of this support. Many ethical concerns arise with this advanced form of life support. More often than not, the dilemma is not whether to withhold ECPR, but rather when to withdraw it. Although clinicians must decide if ECPR is appropriate and when further intervention is futile, the ultimate burden of choice is left to the patient’s caregivers. Offering support and guidance to the patient’s family as well as the patient is essential.


Perfusion ◽  
2021 ◽  
pp. 026765912110181
Author(s):  
Lauren E Levy ◽  
David J Kaczorowski ◽  
Chetan Pasrija ◽  
Gregory Boyajian ◽  
Michael Mazzeffi ◽  
...  

Background: Extracorporeal cardiopulmonary resuscitation (ECPR) for refractory cardiac arrest has improved mortality in post-cardiac surgery patients; however, loss of neurologic function remains one of the main and devastating complications. We reviewed our experience with ECPR and investigated the effect of cannulation strategy on neurologic outcome in adult patients who experienced cardiac arrest following cardiac surgery that was managed with ECPR. Methods: Patients were categorized by central versus percutaneous peripheral VA-extracorporeal membrane oxygenation (ECMO) cannulation strategy. We reviewed patient records and evaluated in-hospital mortality, cause of death, and neurologic status 72 hours after cannulation. Results: From January 2010 to September 2019, 44 patients underwent post-cardiac surgery ECPR for cardiac arrest. Twenty-six patients received central cannulation; 18 patients received peripheral cannulation. Mean post-operative day of the cardiac arrest was 3 and 9 days (p = 0.006), and mean time between initiation of CPR and ECMO was 40 ± 24 and 28 ± 22 minutes for central and peripheral cannulation, respectively. After 72 hours of VA-ECMO support, 30% of centrally cannulated patients versus 72% of peripherally cannulated patients attained cerebral performance status 1–2 (p = 0.01). Anoxic brain injury was the cause of death in 26.9% of centrally cannulated and 11.1% of peripherally cannulated patients. Survival to discharge was 31% and 39% for central and peripheral cannulation, respectively. Conclusions: Peripheral VA-ECMO allows for continuous CPR and systemic perfusion while obtaining vascular access. Compared to central cannulation, a peripheral cannulation strategy is associated with improved neurologic outcomes and decreased likelihood of anoxic brain death.


Perfusion ◽  
2019 ◽  
Vol 35 (1) ◽  
pp. 73-81 ◽  
Author(s):  
Spencer Liem ◽  
Nicholas C Cavarocchi ◽  
Hitoshi Hirose

Introduction: Post-cardiac arrest survivals remain low despite the effort of cardiopulmonary resuscitation. Utilization of extracorporeal membrane oxygenation during cardiopulmonary resuscitation (extracorporeal cardiopulmonary resuscitation) can provide immediate cardiovascular support and potentially improve outcomes of patients with cardiac arrest requiring cardiopulmonary resuscitation. There is renewed interest in the use of extracorporeal cardiopulmonary resuscitation due to improved outcomes over the years. Methods: Extracorporeal membrane oxygenation data between 2010 and 2018 were reviewed. Patients with extracorporeal membrane oxygenation placed under cardiopulmonary resuscitation were identified, and demographics, extracorporeal membrane oxygenation survival, survival to discharge, and neurological recovery were retrospectively analyzed with institutional review board approval. Results: Among 230 cases of extracorporeal membrane oxygenation, 34 (21 males and 13 females, age of 49 ± 13 years) underwent extracorporeal cardiopulmonary resuscitation. The mean duration of extracorporeal membrane oxygenation support after extracorporeal cardiopulmonary resuscitation was 8.3 ± 7.9 days. Extracorporeal membrane oxygenation mortality among extracorporeal cardiopulmonary resuscitation patients was 32% (11/34) and hospital survival was 38% (13/34), which are similar to standard cardiac extracorporeal membrane oxygenation (extracorporeal membrane oxygenation survival 62% and hospital survival 39% in cardiac extracorporeal membrane oxygenation). Among the extracorporeal membrane oxygenation death after extracorporeal cardiopulmonary resuscitation, the majority was due to neurological injury (73%, 8/11); 8/34 extracorporeal membrane oxygenation survival rate and 30-day survival rate were 63% and 25% in early half of study (2010-2014) and have improved to 70% and 60% in late half of study (2014-2018). Conclusion: Over years of experience with extracorporeal membrane oxygenation, the outcome of the extracorporeal cardiopulmonary resuscitation has been improving and appears to exceed those of traditional methods, despite limited sample size. Neurological complications still need to be addressed in order for survival and outcomes to improve.


2021 ◽  
Author(s):  
Sandra Emily Stoll ◽  
Eldho Paul ◽  
David Pilcher ◽  
Andrew Udy ◽  
Aidan Burrell

Abstract BackgroundHyperoxia has been associated with adverse outcomes in post cardiac arrest (CA) patients. However, little data are available from mixed cohorts, where extracorporeal membrane oxygenation cardiopulmonary resuscitation (ECPR) and conventional CPR (CCPR) were utilised. The independence of effect of hyperoxia in this setting is not clear. Study-objective was to examine the association between hyperoxia and 30-day mortality in a mixed cohort of ECPR and CCPR patients.Methods and designThis was a retrospective cohort study of CA patients admitted to a tertiary level cardiac arrest centre in Australia from 1st January 2013 to 31st August 2018. Mean arterial oxygen levels (PaO2) and episodes of extreme hyperoxia (PaO2 ≥ 300mmHg) were analysed over the first 8 days. The primary outcome was 30-day mortality.ResultsA total of 169 post CA patients were assessed over a 6.5-year time period: 79 patients undergoing ECPR vs 90 patients undergoing CCPR. The mean age of the cohort was 54 (± 17) years; 126/169 (74%) were male and 119/169 (70%) were treated for out of hospital cardiac arrest (OHCA). Compared to CCPR, ECPR patients were younger, had a longer low flow time and higher illness severity scores on admission. Mean PaO2-levels were higher in patients in the ECPR vs CCPR group (211mmHg ± 58.4 vs 119mmHg ± 18.1; p < 0.0001) as was the proportion with at least one episode of extreme hyperoxia (58/79 (73%) vs 36/90 (40%), p < 0.01). ECPR patients presented with a higher mortality (54.4%) vs CCPR patients (34.4%). After adjusting for age, sex, BMI, highest lactate pre-treatment, use of ECMO, low flow time, pulse pressure on admission day, and severity of illness (APACHE III score), any episode of extreme hyperoxia was independently associated with a 2.57-fold increased risk of 30-day mortality (OR: 2.57, 95% CI: 1.09–6.06; p = 0.031) irrespective of the CPR-mode.ConclusionWe found extreme hyperoxia (PaO2-level ≥ 300mmHg) was more common in ECPR patients in the first 8 days post CA and was independently associated with higher 30-day mortality, irrespective of whether ECPR was employed. Prospective studies that compare different oxygen targets are needed to see if a strategy of lower oxygen exposure improves outcomes.


2020 ◽  
Author(s):  
Yen-Yu Chen ◽  
Yin-Chia Chen ◽  
Chia-Chen Wu ◽  
Hsu-Ting Yen ◽  
Kwan-Ru Huang ◽  
...  

Abstract Background: Veno-arterial extracorporeal membrane oxygenation (ECMO) is increasingly being utilized in patients with massive pulmonary embolism (PE). However, the efficacy and the safety remain uncertain. This study aimed to investigate clinical courses and outcomes in ECMO-treated patients with acute PE.Methods: Twenty-one patients with acute PE rescued by ECMO from January 2012 to December 2019 were retrospectively analysed. Clinical features, laboratory biomarkers, and imaging findings of these patients were reviewed, and the relationship with immediate outcome and clinical course was investigated.Results: Sixteen patients (76.2%) experienced refractory circulatory collapse requiring cardiopulmonary resuscitation (CPR) or ECMO support within 2 hours after the onset of cardiogenic shock, and none could receive definitive reperfusion therapy before ECMO initiation. Before or during ECMO support, more than 90% of patients had imaging signs of right ventricular (RV) dysfunction. In normotension patients, the computed tomography (CT) value was a valuable predictor of rapid disease progression compared with cardiac troponin I level. Ultimately, in-hospital death occurred in 10 patients (47.6%) and 90% of them died of prolonged CPR-related brain death. Cardiac arrest was a significant predictor of poor prognosis (p = 0.001). Conclusions: ECMO appears to be a safe and effective circulatory support in patients with massive PE. Close monitoring in intensive care unit is recommended in patients with RV dysfunction and aggressive use of ECMO may reduce the risk of sudden cardiac arrest and improve clinical outcome.


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