Abstract 312: The Impact of Sedation on Quantitative Electroencephalogram Trends and Neurological Outcomes in a Mouse Model of Cardiac Arrest and Cardiopulmonary Resuscitation

Introduction: The majority of patients resuscitated from cardiac arrest (CA) present in coma or with an altered level of consciousness. Although most CA survivors are sedated during targeted temperature management, the effects of sedation on post-arrest outcomes remain to be determined. Hypothesis: Sedation after CA improves neurological outcomes by modulating cerebral electrical activity and metabolism. Methods: Ten to 14 days after implantation of EEG transmitters, adult male C57BL/6J mice were subjected to CA and cardiopulmonary resuscitation (CPR). After return of spontaneous circulation (ROSC), mice received intravenous infusion of propofol, dexmedetomidine (DEX), or normal saline (vehicle) for 2 hours. Body temperature was maintained at 37°C, and was subsequently lowered to 33°C. Cerebral blood flow (CBF) was measured for 4 hours following ROSC. To quantify time-dependent EEG changes, we calculated the sum of the Delta, Theta, and Alpha band power in consecutive 12-hour intervals after ROSC (D 0-12 and D 12-24 , T 0-12 and T 12-24 , and A 0-12 and A 12-24 , respectively). Because the increase in fast EEG activity over time may reflect neurological recovery after CA, we compared the ratios of D 12-24 to D 0-12 , of T 12-24 to T 0-12 , and of A 12-24 to A 0-12 among groups. Results: As compared with vehicle-treated mice, propofol- or DEX-treated mice exhibited improved survival rate and neurological function after CA, though no difference was found between propofol- and DEX-treated mice. In the vehicle group, CBF was higher than the baseline after ROSC, while the increase in CBF was attenuated in the propofol and DEX group. The values of A 12-24 /A 0-12 and T 12-24 /T 0-12 were significantly higher in propofol- and DEX-treated mice than in vehicle-treated mice ( P = 0.017 and P = 0.004, respectively, propofol vs vehicle; P = 0.038 and P = 0.002, respectively, DEX vs vehicle), but there was no significant difference in D 12-24 /D 0-12 among groups. In all post-arrest mice, both A 12-24 /A 0-12 and T 12-24 /T 0-12 were positively correlated with better neurological function at 24 and 48 hours after CA. Conclusions: Post-arrest sedation was associated with a reduction in CBF and a greater recovery of fast EEG activity after CA, and improved neurological outcomes and survival in mice.

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Impact of the cardiopulmonary resuscitation-related injuries on the prognosis after cardiac arrest

European Heart Journal ◽

10.1093/ehjci/ehaa946.1819 ◽

2020 ◽

Vol 41 (Supplement_2) ◽

Author(s):

C Merino Argos ◽

I Marco Clement ◽

S.O Rosillo Rodriguez ◽

L Martin Polo ◽

E Arbas Redondo ◽

...

Keyword(s):

Cardiac Arrest ◽

Cardiopulmonary Resuscitation ◽

Cerebral Performance Category ◽

University Hospital ◽

Temperature Management ◽

Performance Category ◽

Neurological Outcomes ◽

Cardiac Care Unit ◽

Sternal Fractures

Abstract Background Cardiopulmonary resuscitation (CPR) manoeuvres involve vigorous compressions with the proper depth and rate in order to keep sufficient perfusion to organs, especially the brain. Accordingly, high incidences of CPR-related injuries (CPR-RI) have been observed in survivors after cardiac arrest (CA). Purpose To analyse whether CPR-related injuries have an impact on the survival and neurological outcomes of comatose survivors after CA. Methods Observational prospective database of consecutive patients (pts) admitted to the acute cardiac care unit of a tertiary university hospital after in-hospital and out-of-hospital CA (IHCA and OHCA) treated with targeted temperature management (TTM 32–34°) from August 2006 to December 2019. CPR-RI were diagnosed by reviewing medical records and analysing image studies during hospitalization. Results A total of 498 pts were included; mean age was 62.7±14.5 years and 393 (78.9%) were men. We found a total of 145 CPR-RI in 109 (21.9%) pts: 79 rib fractures, 20 sternal fractures, 5 hepatic, 5 gastrointestinal, 3 spleen, 1 kidney, 26 lung and 6 heart injuries. Demographic characteristics and cardiovascular risk factors did not differ between the non-CPR-RI group and CPR-RI group. Also, we did not find differences in CA features (Table 1). Survival at discharge was higher in the CPR-RI group [74 (67.8%) vs 188 (48.3%); p<0.001]. Moreover, Cerebral Performance Category (CPC) 1–2 within a 3-month follow-up was significantly higher in the CPR-RI group [(71 (65.1%) vs 168 (43.2%); p<0.001; Figure 1]. Finally, pts who recieved blood transfusions were proportionally higher in the CPR-RI group [34 (32.1%) vs 65 (16.7%)]; p=0.004). Conclusions In our cohort, the presence of CPR-RI was associated with higher survival at discharge and better neurological outcomes during follow-up. Figure 1 Funding Acknowledgement Type of funding source: None

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P5349Platelet/lymphocyte ratio as an inflammatory marker and predictor of short-term neurological outcomes in survivors after cardiac arrest

European Heart Journal ◽

10.1093/eurheartj/ehz746.0316 ◽

2019 ◽

Vol 40 (Supplement_1) ◽

Author(s):

L Rodriguez ◽

L A Martinez ◽

S O Rosillo ◽

L Martin ◽

C Merino ◽

...

Keyword(s):

Cardiac Arrest ◽

Paired Comparison ◽

Inflammatory Marker ◽

Cerebral Performance Category ◽

Temperature Management ◽

Target Temperature Management ◽

Early Assessment ◽

Lymphocyte Ratio ◽

Neurological Outcomes ◽

The Impact

Abstract Background Platelet/lymphocyte ratio (PLR), an inflammatory marker associated with poor outcomes in different clinical situations, may play a role in the proinflammatory state triggered during hypoxic-ischemic brain injury secondary to cardiac arrest. Purpose To study PLR dynamics and its relationship with neurologic outcomes in survivors after CA treated with target-temperature-management (TTM). Methods Observational retrospective study from a prospective database of survivors of in-hospital and out-of-hospital CA admitted to our Acute Cardiac Care Unit between August 2006 to December 2018. All patients received TTM according to our local protocol. Results A total of 466 patients were included. Mean age was 62.7±14.4 years and 102 (21.9%) were women. Baseline characteristics are shown in Table 1. 430 (92.2%) of CA were witnessed, 312 (67.0%) had ventricular fibrillation as initial cardiac rhythm. Among them, 236 (51.1%) survived until hospital discharge and 208 (45.1%) presented favorable neurological outcomes (a score 1 or 2 on cerebral performance category (CPC)). The mean value of PLR at admission and during targeted temperature was 100.4±5.2 and 224.5±7.3 respectively (mean difference 123.1±7.1, p<0.0001). This increase in PLR was significantly higher among patients with worse neurological outcomes (CPC 3–5, mean DPLR 138.2±5.5) at 3 months compared with survivors with CPC 1–2 (mean DPLR 108.2±6.3, p=0.0348 for paired comparison between both groups). Table 1 Hypertension, n (%) 235 (54.9) Diabetes, n (%) 113 (26.4) Dyslipidaemia, n (%) 171 (40.0) Smocking habit, n (%) 208 (48.5) Time to ROSC mean ± SD, min 26.6±18.6 Mean arterial pressure at HA mean±DS, mmHg 81.3±22.1 pH at HA mean ± SD 7.18±0.16 Lactic at HA mean ± SD 6.37±4.42 ROSC: return of spontaneus circulation; HA: hospital admission. Conclusion Our findings reflect the impact of inflammation in neurological outcomes after OHCA treated with TTM. Major increases of PLR constitute a novel marker of poor prognosis during early assessment of OHCA patients.

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Lactate Clearance Predicts Good Neurological Outcomes in Cardiac Arrest Patients Treated with Extracorporeal Cardiopulmonary Resuscitation

Journal of Clinical Medicine ◽

10.3390/jcm8030374 ◽

2019 ◽

Vol 8 (3) ◽

pp. 374 ◽

Cited By ~ 10

Author(s):

Christian Jung ◽

Sandra Bueter ◽

Bernhard Wernly ◽

Maryna Masyuk ◽

Diyar Saeed ◽

...

Keyword(s):

Cardiac Arrest ◽

Cardiopulmonary Resuscitation ◽

Cox Regression ◽

Lactate Concentration ◽

Lactate Clearance ◽

Serum Lactate ◽

Extracorporeal Cardiopulmonary Resuscitation ◽

Neurological Outcomes ◽

Baseline Characteristics ◽

The Impact

Background: We evaluated critically ill patients undergoing extracorporeal cardiopulmonary resuscitation (ECPR) due to cardiac arrest (CA) with respect to baseline characteristics and laboratory assessments, including lactate and lactate clearance for prognostic relevance. Methods: The primary endpoint was 30-day mortality. The impact on 30-day mortality was assessed by uni- and multivariable Cox regression analyses. Neurological outcome assessed by Glasgow Outcome Scale (GOS) was pooled into two groups: scores of 1–3 (bad GOS score) and scores of 4–5 (good GOS score). Results: A total of 93 patients were included in the study. Serum lactate concentration (hazard ratio (HR) 1.09; 95% confidence interval (CI) 1.04–1.13; p < 0.001), hemoglobin, (Hb; HR 0.87; 95% CI 0.79–0.96; p = 0.004), and catecholamine use were associated with 30-day-mortality. In a multivariable model, only lactate clearance (after 6 h; OR 0.97; 95% CI 0.94–0.997; p = 0.03) was associated with a good GOS score. The optimal cut-off of lactate clearance at 6 h for the prediction of a bad GOS score was at ≤13%. Patients with a lactate clearance at 6 h ≤13% evidenced higher rates of bad GOS scores (97% vs. 73%; p = 0.01). Conclusions: Whereas lactate clearance does not predict mortality, it was the sole predictor of good neurological outcomes and might therefore guide clinicians when to stop ECPR.

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Impact of Dispatcher-Assisted Bystander Cardiopulmonary Resuscitation with Out-of-Hospital Cardiac Arrest: A Systemic Review and Meta-Analysis

Prehospital and Disaster Medicine ◽

10.1017/s1049023x20000588 ◽

2020 ◽

Vol 35 (4) ◽

pp. 372-381

Author(s):

Junhong Wang ◽

Hua Zhang ◽

Zongxuan Zhao ◽

Kaifeng Wen ◽

Yaoke Xu ◽

...

Keyword(s):

Cardiac Arrest ◽

Cardiopulmonary Resuscitation ◽

Neurological Outcome ◽

Meta Analysis ◽

Systemic Review ◽

Cochrane Library ◽

Significant Difference ◽

Bystander Cardiopulmonary Resuscitation ◽

The Impact ◽

Hospital Cardiac Arrest

AbstractObjective:This systemic review and meta-analysis was conducted to explore the impact of dispatcher-assisted bystander cardiopulmonary resuscitation (DA-BCPR) on bystander cardiopulmonary resuscitation (BCPR) probability, survival, and neurological outcomes with out-of-hospital cardiac arrest (OHCA).Methods:Electronically searching of PubMed, Embase, and Cochrane Library, along with manual retrieval, were done for clinical trials about the impact of DA-BCPR which were published from the date of inception to December 2018. The literature was screened according to inclusion and exclusion criteria, the baseline information, and interested outcomes were extracted. Two reviewers assessed the methodological quality of the included studies. Pooled odds ratio (OR) and 95% confidence interval (CI) were calculated by STATA version 13.1.Results:In 13 studies, 235,550 patients were enrolled. Compared with no dispatcher instruction, DA-BCPR tended to be effective in improving BCPR rate (I2 = 98.2%; OR = 5.84; 95% CI, 4.58-7.46; P <.01), return of spontaneous circulation (ROSC) before admission (I2 = 36.0%; OR = 1.17; 95% CI, 1.06-1.29; P <.01), discharge or 30-day survival rate (I2 = 47.7%; OR = 1.25; 95% CI, 1.06-1.46; P <.01), and good neurological outcome (I2 = 30.9%; OR = 1.24; 95% CI, 1.04-1.48; P = .01). However, no significant difference in hospital admission was found (I2 = 29.0%; OR = 1.09; 95% CI, 0.91-1.30; P = .36).Conclusion:This review shows DA-BPCR plays a positive role for OHCA as a critical section in the life chain. It is effective in improving the probability of BCPR, survival, ROSC before admission, and neurological outcome.

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Impact of Cardiopulmonary Resuscitation Duration on the Neurological Outcomes of Out-of-Hospital Cardiac Arrest

10.21203/rs.3.rs-566168/v1 ◽

2021 ◽

Author(s):

HISSAH ALBINALI ◽

Arwa Alumran ◽

Saja AlRayes

Keyword(s):

Cardiac Arrest ◽

Cardiopulmonary Resuscitation ◽

Neurological Outcome ◽

Cerebral Performance Category ◽

Bivariate Analysis ◽

Neurological Outcomes ◽

Risk Of Death ◽

Secondary Hospital ◽

The Impact ◽

Hospital Cardiac Arrest

Abstract Background: Patients experiencing cardiac arrest outside medical facilities are at greater risk of death and might have negative neurological outcomes. Cardiopulmonary resuscitation duration affects neurological outcomes of such patients, which suggests that duration of CPR may be vital to patient outcomes.Objectives: The study aims to evaluate the impact of cardiopulmonary resuscitation duration on neurological outcome of patients who have suffered out-of-hospital cardiac arrest.Methods: Data were collected from emergency cases handled by a secondary hospital in industrial Jubail, Saudi Arabia, between 2015 and 2020. There were 257 out-of-hospital cardiac arrest cases, 236 of which resulted in death.Results: Bivariate analysis showed no significant association between cerebral performance category (CPC) outcomes and duration of CPR, gender and cause of death whereas there is statistically significant between CPC and age. (p = 0.001). However, a good CPC outcome was reported with a (mean) limited duration of 8.1 min of CPR; whereas, poor CPC outcomes were associated with prolonged periods of CPR, 13.2 min (mean). Similarly, youthfulness was associated with good CPC outcomes as revealed by the mean age of 5.8 years, whereas a mean rank of 14.9 years was aligned with a poor CPC outcome.Conclusion: Cardiopulmonary Resuscitation Duration out-of-hospital cardiac arrest does not significantly influence the patient neurological outcome in the current study hospital. Other variables may have a more significant effect.

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Association Between Neurological Outcomes and Extreme Hyperoxia in Patients with Out-of-Hospital Cardiac Arrest Who Underwent Extracorporeal Cardiopulmonary Resuscitation: A Retrospective Observational Study from a Multicenter Registry

10.21203/rs.3.rs-1022493/v1 ◽

2021 ◽

Author(s):

Masahiro Kashiura ◽

Hideto Yasuda ◽

Yuki Kishihara ◽

Keiichiro Tominaga ◽

Masaaki Nishihara ◽

...

Keyword(s):

Cardiac Arrest ◽

Cardiopulmonary Resuscitation ◽

Confidence Interval ◽

Odds Ratio ◽

Adjusted Odds Ratio ◽

Analysis Model ◽

Neurological Outcomes ◽

Arterial Blood ◽

The Impact ◽

Hospital Cardiac Arrest

Abstract Background: To investigate the impact of hyperoxia that developed immediately after extracorporeal membrane oxygenation (ECMO)-assisted cardiopulmonary resuscitation (ECPR) on patients’ 30-day neurological outcomes after out-of-hospital cardiac arrest (OHCA). Methods: This study retrospectively analyzed data from the Japanese OHCA registry from June 2014 to December 2017. We analyzed adult patients (18 years or older) who had undergone ECPR. Eligible patients were divided into the following three groups based on their initial partial pressure of oxygen in arterial blood (PaO2) levels after ECMO pump-on: normoxia group, PaO2 ≤ 200 mm Hg; moderate hyperoxia group, 200 mm Hg < PaO2 ≤ 400 mm Hg; and extreme hyperoxia group, PaO2 > 400 mm Hg. The primary and secondary outcomes were 30-day favorable neurological outcomes. Logistic regression statistical analysis model of 30-day favorable neurological outcomes was performed after adjusting for multiple propensity scores calculated using pre-ECPR covariates and for confounding factors post-ECPR.Results: Of the 34 754 patients with OHCA enrolled in the registry, 847 were included. The median PaO2 level was 300 mm Hg (interquartile range: 148–427 mm Hg). Among the eligible patients, 277, 313, and 257 were categorized as normoxic, moderately hyperoxic, and extremely hyperoxic, respectively. Moderate hyperoxia was not significantly associated with neurologically favorable outcomes compared with normoxia as a reference (adjusted odds ratio, 0.86; 95% confidence interval: 0.55–1.35; p = 0.51). However, extreme hyperoxia was associated with less neurologically favorable outcomes when compared with normoxia (adjusted odds ratio, 0.48; 95% confidence interval: 0.29–0.82; p = 0.007).Conclusions: For patients with OHCA who received ECPR, extreme hyperoxia (PaO2 > 400 mm Hg) was associated with poor neurological outcomes. Avoidance of extreme hyperoxia may improve neurological outcomes in patients with OHCA treated with ECPR.

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Impact of rewarming rate on interleukin-6 levels in patients with shockable cardiac arrest receiving targeted temperature management at 33 °C: the ISOCRATE pilot randomized controlled trial

Critical Care ◽

10.1186/s13054-021-03842-9 ◽

2021 ◽

Vol 25 (1) ◽

Author(s):

Jean-Baptiste Lascarrou ◽

Elie Guichard ◽

Jean Reignier ◽

Amélie Le Gouge ◽

Caroline Pouplet ◽

...

Keyword(s):

Randomized Controlled Trial ◽

Cardiac Arrest ◽

Interleukin 6 ◽

Controlled Trial ◽

Cerebral Performance Category ◽

Targeted Temperature Management ◽

Temperature Management ◽

Randomized Controlled ◽

Significant Difference ◽

The Impact

Abstract Purpose While targeted temperature management (TTM) has been recommended in patients with shockable cardiac arrest (CA) and suggested in patients with non-shockable rhythms, few data exist regarding the impact of the rewarming rate on systemic inflammation. We compared serum levels of the proinflammatory cytokine interleukin-6 (IL6) measured with two rewarming rates after TTM at 33 °C in patients with shockable out-of-hospital cardiac arrest (OHCA). Methods ISOCRATE was a single-center randomized controlled trial comparing rewarming at 0.50 °C/h versus 0.25 °C/h in patients coma after shockable OHCA in 2016–2020. The primary outcome was serum IL6 level 24–48 h after reaching 33 °C. Secondary outcomes included the day-90 Cerebral Performance Category (CPC) and the 48-h serum neurofilament light-chain (NF-L) level. Results We randomized 50 patients. The median IL6 area-under-the-curve was similar between the two groups (12,389 [7256–37,200] vs. 8859 [6825–18,088] pg/mL h; P = 0.55). No significant difference was noted in proportions of patients with favorable day-90 CPC scores (13/25 patients at 0.25 °C/h (52.0%; 95% CI 31.3–72.2%) and 13/25 patients at 0.50 °C/h (52.0%; 95% CI 31.3–72.2%; P = 0.99)). Median NF-L levels were not significantly different between the 0.25 °C/h and 0.50 °C/h groups (76.0 pg mL, [25.5–3074.0] vs. 192 pg mL, [33.6–4199.0]; P = 0.43; respectively). Conclusion In our RCT, rewarming from 33 °C at 0.25 °C/h, compared to 0.50 °C/h, did not decrease the serum IL6 level after shockable CA. Further RCTs are needed to better define the optimal TTM strategy for patients with CA. Trial registration ClinicalTrials.gov, NCT02555254. Registered September 14, 2015. Take-Home Message: Rewarming at a rate of 0.25 °C/h, compared to 0.50 °C, did not result in lower serum IL6 levels after achievement of hypothermia at 33 °C in patients who remained comatose after shockable cardiac arrest. No associations were found between the slower rewarming rate and day-90 functional outcomes or mortality. 140-character Tweet: Rewarming at 0.25 °C versus 0.50 °C did not decrease serum IL6 levels after hypothermia at 33 °C in patients comatose after shockable cardiac arrest.

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Target Temperature Management May Not Improve Clinical Outcomes of Extracorporeal Cardiopulmonary Resuscitation

Journal of Intensive Care Medicine ◽

10.1177/0885066618801269 ◽

2018 ◽

Vol 34 (10) ◽

pp. 790-796 ◽

Cited By ~ 6

Author(s):

Young Su Kim ◽

Yang Hyun Cho ◽

Kiick Sung ◽

Jeong-Am Ryu ◽

Chi Ryang Chung ◽

...

Keyword(s):

Cardiac Arrest ◽

Cardiopulmonary Resuscitation ◽

Life Support ◽

Extracorporeal Life Support ◽

Temperature Management ◽

Target Temperature Management ◽

Target Temperature ◽

Extracorporeal Cardiopulmonary Resuscitation ◽

Neurological Outcomes ◽

Hospital Survival

Purpose: Target temperature management (TTM) and extracorporeal cardiopulmonary resuscitation (ECPR) have been established as important interventions during cardiopulmonary arrest. However, the impact of combined TTM and ECPR on clinical outcomes has not been studied in detail. Methods: We reviewed the records of 245 patients who received extracorporeal life support (ECLS) between January 2012 and June 2015. Exclusion criteria were as follows: Extracorporeal life support performed for reasons other than cardiac arrest, age less than 18 years, and death within 24 hours. A total of 101 patients were finally included in the study. Twenty-five patients underwent TTM, and 76 patients did not. Results: The patients’ mean age was 55 ± 16.7 years. The mean cardiac arrest time was 44.6 ± 33.5 minutes. There were 84 patients whose cardiac arrest was due to a cardiac cause (83.2%) and 79 patients with in-hospital cardiac arrest (78.2%). There was a significant difference in average body temperature during the first 24 hours following ECPR (33.4°C vs 35.6°C; P = .001). The overall favorable neurological outcome rate was 34% and hospital survival rate was 47%. There was no difference in favorable neurological outcomes and hospital survival between the TTM and non-TTM groups ( P = .91 and .84, respectively). On multivariate analysis of neurological outcomes and hospital survival, TTM was not a significant prognostic factor. Conclusion: We did not observe any benefits of TTM in patients undergoing ECPR. Natural hypothermia or normothermia related to ECLS may explain this result. Further research is needed to understand the role of TTM in ECPR.

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