scholarly journals Hyperoxia and mortality in Conventional versus Extracorporeal Membrane Oxygenation Cardiopulmonary Resuscitation

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.

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).


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.


2019 ◽  
Vol 43 (1) ◽  
pp. 62-65
Author(s):  
Shriprasad R Deshpande ◽  
Danish Vaiyani ◽  
Angel R Cuadrado ◽  
E Dean McKenzie ◽  
Kevin O Maher

Outcomes of out-of-hospital cardiac arrest are poor irrespective of the patient age group and circumstances. Survival to discharge after out-of-hospital arrest in children is less than 10%. Use of extracorporeal cardiopulmonary resuscitation is increasing and has been shown to improve outcomes in some situations. However, the candidacy for such augmentation is based on patient selection, institutional practices, and availability of an extracorporeal membrane oxygenation center. Often, duration of resuscitation, low flow state, presenting pH, and circumstances of arrest dictate candidacy for extracorporeal membrane oxygenation. We present a case of extremely prolonged resuscitation for out-of-hospital arrest in a pediatric patient, and we describe the use of mechanical compression device and transition to extracorporeal membrane oxygenation. We present the case outcome as well as brief discussion about controversies in extracorporeal cardiopulmonary resuscitation. We hope the case provides an opportunity for further discussion regarding opportunities to improve selection, use of extracorporeal cardiopulmonary resuscitation, and impact outcomes.


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 ◽  
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.


Circulation ◽  
2021 ◽  
Vol 144 (Suppl_2) ◽  
Author(s):  
Marie Oebo ◽  
Nils Lars Olof Lundgren ◽  
Sarah Maiken Delaïre ◽  
Helle Laugesen ◽  
Jan J Andreasen

Aim: To compare survival rates in patients with refractory cardiac arrest treated with extracorporeal cardiopulmonary resuscitation (ECPR) before and after implementation of an action card.The primary outcome was survival to discharge, and secondary outcomes were low-flow time and rate of cerebral complications. Methods: Retrospective evaluation of 37 patients treated with ECPR for refractory cardiac arrest. Information was obtained through medical records. Patients were categorized into two groups - before (BA) and after (AA) introduction of an action card. The card entailed inclusion and exclusion criteria used to evaluate the benefit of ECPR for any individual patient. Results: There were no statistically significant differences in baseline characteristics between the groups.After the introduction of the action card, survival to discharge increased from 6.7 % to 18.2 % suggesting a trend toward improved survival, despite this finding being statistically insignificant (p = 0.629).Low-flow time was reduced from 100 (12-195) minutes to 66 (30-195) minutes and the upper extreme was reduced from 195 to 153 minutes, but this was not statistically significant (p = 0.334).Cerebral factors contributed to significantly fewer deaths in AA compared with BA (p = 0.0022). Conclusion: There was no statistically significant improvement in survival rates nor a reduction in low-flow time after the implementation of an action card for the use of ECPR in patients with refractory CA. However, cerebral causes factored in fewer deaths and several patients survived despite meeting potential exclusion criteria outlined in local and international guidelines.


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