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Beekman R, Khosla A, Buckley R, Honiden S, Gilmore EJ. Temperature Control in the Era of Personalized Medicine: Knowledge Gaps, Research Priorities, and Future Directions. J Intensive Care Med 2024; 39:611-622. [PMID: 37787185 DOI: 10.1177/08850666231203596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
Hypoxic-ischemic brain injury (HIBI) is the leading cause of death and disability after cardiac arrest. To date, temperature control is the only intervention shown to improve neurologic outcomes in patients with HIBI. Despite robust preclinical evidence supporting hypothermia as neuroprotective therapy after cardiac arrest, there remains clinical equipoise regarding optimal core temperature, therapeutic window, and duration of therapy. Current guidelines recommend continuous temperature monitoring and active fever prevention for at least 72 h and additionally note insufficient evidence regarding temperature control targeting 32 °C-36 °C. However, population-based thresholds may be inadequate to support the metabolic demands of ischemic, reperfused, and dysregulated tissue. Promoting a more personalized approach with individualized targets has the potential to further improve outcomes. This review will analyze current knowledge and evidence, address research priorities, explore the components of high-quality temperature control, and define critical future steps that are needed to advance patient-centered care for cardiac arrest survivors.
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Affiliation(s)
- Rachel Beekman
- Department of Neurology, Yale University School of Medicine, New Haven, CT, USA
| | - Akhil Khosla
- Department of Medicine, Yale University School of Medicine, New Haven, CT, USA
| | - Ryan Buckley
- Department of Medicine, Yale University School of Medicine, New Haven, CT, USA
| | - Shyoko Honiden
- Department of Medicine, Yale University School of Medicine, New Haven, CT, USA
| | - Emily J Gilmore
- Department of Neurology, Yale University School of Medicine, New Haven, CT, USA
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2
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Kimura N, Nishimura Y, Chung-Esaki H. Factors Associated with Favorable Outcomes in Cardiac Arrest and Target Temperature Management. Ther Hypothermia Temp Manag 2023. [PMID: 37792291 DOI: 10.1089/ther.2023.0018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/05/2023] Open
Abstract
Current guidelines strongly recommend providing targeted temperature management (TTM) after cardiac arrest, but hypothalamic dysregulation may confound TTM's impact on a patient's ultimate outcome. Although time to reach target temperature has largely been viewed as a process measure for TTM protocols, the difference between initial presenting temperature and target temperature (Δ-temperature) may be a potential surrogate marker of hypothalamic dysregulation. We performed a retrospective observational study to explore whether Δ-temperature was associated with neurologic outcomes and mortality. We included 86 patients (53 with out-of-hospital cardiac arrest [OHCA] and 33 with in-hospital cardiac arrest [IHCA]) in our analysis; more than half of the patients were cooled to 33°C (56.9% in OHCA and 57.6% in IHCA). In univariate logistic regression analysis, Δ-temperature alone did not appear to be statistically associated with mortality or neurologic outcomes regardless of target temperature. In exploratory analysis, longer time from TTM initiation-to-target was associated with worse neurological outcomes in the 33°C target (odds ratio = 0.996, 95% confidence interval = 0.992-1.000). Further research investigating the impact of hypothalamic dysregulation and Δ-temperature as well as the rate of cooling may be warranted to elucidate additional factors contributing to outcomes after cardiac arrest. In addition, our study population was noted to have a higher proportion of Asians and Native Hawaiians/Pacific Islanders, with a potential disparity in outcomes. Future studies may be warranted to ensure generalizability of TTM protocols and findings across populations.
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Affiliation(s)
- Nobuhiko Kimura
- Department of Medicine, John A. Burns School of Medicine, University of Hawai'i, Honolulu, Hawaii, USA
| | - Yoshito Nishimura
- Department of Medicine, John A. Burns School of Medicine, University of Hawai'i, Honolulu, Hawaii, USA
| | - Hangyul Chung-Esaki
- Department of Medicine, John A. Burns School of Medicine, University of Hawai'i, Honolulu, Hawaii, USA
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3
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Fernandez Hernandez S, Barlow B, Pertsovskaya V, Maciel CB. Temperature Control After Cardiac Arrest: A Narrative Review. Adv Ther 2023; 40:2097-2115. [PMID: 36964887 PMCID: PMC10129937 DOI: 10.1007/s12325-023-02494-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 03/08/2023] [Indexed: 03/26/2023]
Abstract
Cardiac arrest (CA) is a critical public health issue affecting more than half a million Americans annually. The main determinant of outcome post-CA is hypoxic-ischemic brain injury (HIBI), and temperature control is currently the only evidence-based, guideline-recommended intervention targeting secondary brain injury. Temperature control is a key component of a post-CA care bundle; however, conflicting evidence challenges its wide implementation across the vastly heterogeneous population of CA survivors. Here, we critically appraise the available literature on temperature control in HIBI, detail how the evidence has been integrated into clinical practice, and highlight the complications associated with its use and the timing of neuroprognostication after CA. Future clinical trials evaluating different temperature targets, rates of rewarming, duration of cooling, and identifying which patient phenotype benefits from different temperature control methods are needed to address these prevailing knowledge gaps.
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Affiliation(s)
| | - Brooke Barlow
- Department of Pharmacy, Memorial Hermann the Woodlands Medical Center, The Woodlands, TX, USA
| | - Vera Pertsovskaya
- The George Washington University School of Medicine and Health Sciences, Washington, DC, 20037, USA
| | - Carolina B Maciel
- Department of Neurology, University of Florida College of Medicine, Gainesville, FL, 32611, USA
- Department of Neurosurgery, University of Florida College of Medicine, Gainesville, FL, 32611, USA
- Comprehensive Epilepsy Center, Department of Neurology, Yale University School of Medicine, New Haven, CT, USA
- Department of Neurology, University of Utah, Salt Lake City, UT, 84132, USA
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4
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Wang IT, Wang CJ, Chen CH, Yang SH, Chen CY, Huang YC, Lin CY, Wu CL. Optimal Timing of Targeted Temperature Management for Post-Cardiac Arrest Syndrome: Is Sooner Better? J Clin Med 2023; 12:jcm12072628. [PMID: 37048710 PMCID: PMC10095041 DOI: 10.3390/jcm12072628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/23/2023] [Accepted: 03/27/2023] [Indexed: 04/03/2023] Open
Abstract
Targeted temperature management (TTM) is often considered to improve post-cardiac arrest patients’ outcomes. However, the optimal timing to initiate cooling remained uncertain. This retrospective analysis enrolled all non-traumatic post-cardiac arrest adult patients with either out-of-hospital cardiac arrest (OHCA) or in-hospital cardiac arrest (IHCA) who received TTM from July 2015 to July 2021 at our hospital. The values of time delay before TTM and time to target temperature were divided into three periods according to optimal cut-off values identified using receiver operating characteristic curve analysis. A total of 177 patients were enrolled. A shorter time delay before TTM (pre-induction time) was associated with a lower survival chance at 28 days (32.00% vs. 54.00%, p = 0.0279). Patients with a longer cooling induction time (>440 minis) had better neurological outcomes (1.58% vs. 1.05%; p = 0.001) and survival at 28 days (58.06% vs. 29.25%; p = 0.006). After COX regression analysis, the influence of pre-induction time on survival became insignificant, but patients who cooled slowest still had a better chance of survival at 28 days. In conclusion, a shorter delay before TTM was not associated with better clinical outcomes. However, patients who took longer to reach the target temperature had better hospital survival and neurological outcomes than those who were cooled more rapidly. A further prospective study was warranted to evaluate the appropriate time window of TTM.
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Affiliation(s)
- I-Ting Wang
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, MacKay Memorial Hospital, Taipei 104217, Taiwan
- Department of Critical Care Medicine, MacKay Memorial Hospital, Taipei 104217, Taiwan
- Department of Medicine, MacKay Memorial College, New Taipei City 25245, Taiwan
| | - Chieh-Jen Wang
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, MacKay Memorial Hospital, Taipei 104217, Taiwan
- Department of Medicine, MacKay Memorial College, New Taipei City 25245, Taiwan
- Correspondence: ; Tel.: +886-2-28094661 (ext. 2331)
| | - Chao-Hsien Chen
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, MacKay Memorial Hospital, Taipei 104217, Taiwan
- Department of Medicine, MacKay Memorial College, New Taipei City 25245, Taiwan
| | - Sheng-Hsiung Yang
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, MacKay Memorial Hospital, Taipei 104217, Taiwan
- Ph.D. Program in Translational Medicine, National Taiwan University and Academia Sinica, Taipei 11529, Taiwan
| | - Chun-Yen Chen
- Division of Cardiology, Department of Internal Medicine, MacKay Memorial Hospital, Taipei 104217, Taiwan
| | - Yen-Chun Huang
- Graduate Institute of Business Administration, Fu Jen Catholic University, New Taipei City 242062, Taiwan
- Artificial Intelligence Development Center, Fu Jen Catholic University, New Taipei City 242062, Taiwan
| | - Chang-Yi Lin
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, MacKay Memorial Hospital, Taipei 104217, Taiwan
- Department of Medicine, MacKay Memorial College, New Taipei City 25245, Taiwan
| | - Chien-Liang Wu
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, MacKay Memorial Hospital, Taipei 104217, Taiwan
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5
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Matsumoto S, Kuno T, Mikami T, Takagi H, Ikeda T, Briasoulis A, Bortnick AE, Sims D, Katz JN, Jentzer J, Bangalore S, Alviar CL. Effect of cooling methods and target temperature on outcomes in comatose patients resuscitated from cardiac arrest: Systematic review and network meta-analysis of randomized trials. Am Heart J 2023; 256:73-84. [PMID: 36372248 DOI: 10.1016/j.ahj.2022.11.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 10/25/2022] [Accepted: 11/04/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Targeted temperature management (TTM) has been recommended after cardiac arrest (CA), however the specific temperature targets and cooling methods (intravascular cooling (IVC) versus surface cooling (SC)) remain uncertain. METHODS PUBMED and EMBASE were searched until October 8, 2022 for randomized clinical trials (RCTs) investigating the efficacy of TTM after CA. The randomized treatment arms were categorized into the following 6 groups: 31..C to 33..C IVC, 31..C to 33..C SC, 34..C to 36..C IVC, 34..C to 36..C SC, strict normothermia or fever prevention (Strict NT or FP), and standard of care without TTM (No-TTM). The primary outcome was neurological recovery. P-score was used to rank the treatments, where a larger value indicates better performance. RESULTS We identified 15 RCTs, involving 5,218 patients with CA. Compared to No-TTM as the reference, the other therapeutic options significantly improved neurological outcomes (vs No-TTM; 31..C to 33.. C IVC RR = 0.67, 95% CI 0.54 to 0.83; 31..C to 33..C SC RR = 0.73, 95% CI 0.61 to 0.87; 34..C to 36.. C IVC RR = 0.66, 95% CI 0.51 to 0.86; 34..C to 36..C SC: RR = 0.73, 0.59 to 0.90; Strict NT or FP: RR = 0.75, 95% CI 0.62 to 0.90). Overall, 31-33..C IVC had the highest probability to be the best therapeutic option to improve outcomes (the ranking P-score of 0.836). As a subgroup analysis, the ranking P-score showed that IVC might be a better cooling method compared to SC (IVC vs SC P-score: 0.960 vs 0.670). CONCLUSIONS Hypothermia (31..C to 36..C IVC and SC) and active normothermia (Strict-NT and Strict-FP) were associated with better neurological outcomes compared to No-TTM, with IVC having a greater probability of being the better cooling method than SC.
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Affiliation(s)
- Shingo Matsumoto
- Division of Cardiovascular Medicine, Department of Internal Medicine, Toho University Faculty of Medicine, Tokyo, Japan
| | - Toshiki Kuno
- Department of Medicine, Division of Cardiology, Montefiore Medical Center and Albert Einstein College of Medicine Bronx, NY.
| | | | - Hisato Takagi
- Department of Cardiovascular Surgery, Shizuoka Medical Center, Shizuoka, Japan
| | - Takanori Ikeda
- Division of Cardiovascular Medicine, Department of Internal Medicine, Toho University Faculty of Medicine, Tokyo, Japan
| | | | - Anna E Bortnick
- Department of Medicine, Division of Cardiology, Montefiore Medical Center and Albert Einstein College of Medicine Bronx, NY
| | - Daniel Sims
- Department of Medicine, Division of Cardiology, Montefiore Medical Center and Albert Einstein College of Medicine Bronx, NY
| | - Jason N Katz
- Division of Cardiovascular Medicine, Duke University, Durham, NC
| | - Jacob Jentzer
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN
| | - Sripal Bangalore
- The Leon H. Charney Division of Cardiovascular Medicine, New York University Grossman School of Medicine, New York, NY
| | - Carlos L Alviar
- The Leon H. Charney Division of Cardiovascular Medicine, New York University Grossman School of Medicine, New York, NY
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Zeng R, Lai F, Huang M, Zhu D, Chen B, Tao L, Huang W, Lai C, Ding B. Feasibility of electroacupuncture at Baihui (GV20) and Zusanli (ST36) on survival with a favorable neurological outcome in patients with postcardiac arrest syndrome after in-hospital cardiac arrest: study protocol for a pilot randomized controlled trial. Pilot Feasibility Stud 2023; 9:8. [PMID: 36639647 PMCID: PMC9837931 DOI: 10.1186/s40814-023-01239-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 01/04/2023] [Indexed: 01/14/2023] Open
Abstract
BACKGROUND At present, even the first-line medication epinephrine still shows no evidence of a favourable neurological outcome in patients with sudden cardiac arrest (SCA). The high mortality of patients with postcardiac arrest syndrome (PCAS) can be attributed to brain injury, myocardial dysfunction, systemic ischaemia/reperfusion response, and persistent precipitating pathology. Targeted temperature management, the only clinically proven method in the treatment of PCAS, is still associated with a series of problems that have not been completely resolved. Acupuncture is a crucial therapy in traditional Chinese medicine. On the basis of the results of previous studies, we hypothesize that electroacupuncture (EA) might provide therapeutic benefits in the treatment of PCAS. This study will explore the feasibility of EA on SCA patients. METHODS This is a prospective pilot, randomized controlled clinical trial. Eligible patients with PCAS after in-hospital cardiac arrest (IHCA) admitted to our department will be randomly allocated to the control group or the EA group. Both groups will receive standard therapy according to American Heart Association guidelines for cardiopulmonary resuscitation. However, the EA group will also receive acupuncture at the Baihui acupoint (GV20) and Zusanli acupoint (ST36) with EA stimulation for 30 min using a dense-dispersed wave at frequencies of 20 and 100 Hz, a current intensity of less than 10 mA, and a pulse width of 0.5 ms. EA treatment will be administered for up to 14 days (until either discharge or death). The primary endpoint is survival with a favourable neurological outcome. The secondary endpoints are neurological scores, cardiac function parameters, and other clinical parameters, including Sequential Organ Failure Assessment (SOFA) scores and Acute Physiology and Chronic Health Evaluation (APACHE) II scores, on days 0 to 28. DISCUSSION This study will provide crucial clinical evidence on the efficacy of EA in PCAS when used as an adjunctive treatment with AHA standard therapy. TRIAL REGISTRATION chictr.org.cn : ChiCTR2000040040. Registered on 19 November 2020. Retrospectively registered. http://www.chictr.org.cn/ .
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Affiliation(s)
- Ruifeng Zeng
- grid.411866.c0000 0000 8848 7685The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Provincial Key Laboratory of Research on Emergency in TCM, Guangzhou, 510120 Guangdong China ,grid.413402.00000 0004 6068 0570Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, 510120 Guangdong China
| | - Fang Lai
- grid.411866.c0000 0000 8848 7685The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Provincial Key Laboratory of Research on Emergency in TCM, Guangzhou, 510120 Guangdong China ,grid.413402.00000 0004 6068 0570Fangcun Branch Hospital of Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, 510145 Guangdong China
| | - Manhua Huang
- grid.411866.c0000 0000 8848 7685The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Provincial Key Laboratory of Research on Emergency in TCM, Guangzhou, 510120 Guangdong China ,grid.413402.00000 0004 6068 0570Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, 510120 Guangdong China
| | - Decai Zhu
- grid.411866.c0000 0000 8848 7685The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Provincial Key Laboratory of Research on Emergency in TCM, Guangzhou, 510120 Guangdong China ,grid.413402.00000 0004 6068 0570Fangcun Branch Hospital of Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, 510145 Guangdong China
| | - Baijian Chen
- grid.411866.c0000 0000 8848 7685The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Provincial Key Laboratory of Research on Emergency in TCM, Guangzhou, 510120 Guangdong China ,grid.413402.00000 0004 6068 0570Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, 510120 Guangdong China
| | - Lanting Tao
- grid.411866.c0000 0000 8848 7685The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Provincial Key Laboratory of Research on Emergency in TCM, Guangzhou, 510120 Guangdong China ,grid.413402.00000 0004 6068 0570Ersha Branch Hospital of Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, 510105 Guangdong China
| | - Wei Huang
- grid.411866.c0000 0000 8848 7685The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Provincial Key Laboratory of Research on Emergency in TCM, Guangzhou, 510120 Guangdong China ,grid.413402.00000 0004 6068 0570Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, 510120 Guangdong China
| | - Chengzhi Lai
- grid.411866.c0000 0000 8848 7685The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Provincial Key Laboratory of Research on Emergency in TCM, Guangzhou, 510120 Guangdong China ,grid.413402.00000 0004 6068 0570Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, 510120 Guangdong China
| | - Banghan Ding
- grid.411866.c0000 0000 8848 7685The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangdong Provincial Key Laboratory of Research on Emergency in TCM, Guangzhou, 510120 Guangdong China ,grid.413402.00000 0004 6068 0570Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, 510120 Guangdong China
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7
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Arbas-Redondo E, Rosillo-Rodríguez SO, Merino-Argos C, Marco-Clement I, Rodríguez-Sotelo L, Martínez-Marín LA, Martín-Polo L, Vélez-Salas A, Caro-Codón J, García-Arribas D, Armada-Romero E, López-De-Sa E. Bispectral index and suppression ratio after cardiac arrest: are they useful as bedside tools for rational treatment escalation plans? REVISTA ESPANOLA DE CARDIOLOGIA (ENGLISH ED.) 2022; 75:992-1000. [PMID: 35570124 DOI: 10.1016/j.rec.2022.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Accepted: 03/15/2022] [Indexed: 06/15/2023]
Abstract
INTRODUCTION AND OBJECTIVES Myocardial dysfunction contributes to early mortality (24-72 hours) among survivors of a cardiac arrest (CA). The benefits of mechanical support in refractory shock should be balanced against the patient's potential for neurological recovery. To date, these early treatment decisions have been taken based on limited information leading mainly to undertreatment. Therefore, there is a need for early, reliable, accessible, and simple tools that offer information on the possibilities of neurological improvement. METHODS We collected data from bispectral index (BIS) and suppression ratio (SR) monitoring of adult comatose survivors of CA managed with targeted temperature management (TTM). Neurological status was assessed according to the Cerebral Performance Category (CPC) scale. RESULTS We included 340 patients. At the first full neurological evaluation, 211 patients (62.1%) achieved good outcome or CPC 1-2. Mean BIS values were significantly higher and median SR lower in patients with CPC 1-2. An average BIS> 26 during first 12 hours of TTM predicted good outcome with 89.5% sensitivity and 75.8% specificity (AUC of 0.869), while average SR values> 24 during the first 12 hours of TTM predicted poor outcome (CPC 3-5) with 91.5% sensitivity and 81.8% specificity (AUC, 0.906). Hourly BIS and SR values exhibited good predictive performance (AUC> 0.85), as soon as hour 2 for SR and hour 4 for BIS. CONCLUSIONS BIS/SR are associated with patients' potential for neurological recovery after CA. This finding could help to create awareness of the possibility of a better outcome in patients who might otherwise be wrongly considered as nonviable and to establish personalized treatment escalation plans.
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Affiliation(s)
| | - Sandra O Rosillo-Rodríguez
- Unidad de Cuidados Agudos Cardiovasculares, Servicio de Cardiología, Hospital Universitario La Paz, Madrid, Spain; Instituto de Investigación Hospital Universitario La Paz (IdiPAZ), Madrid, Spain
| | | | | | | | | | | | | | - Juan Caro-Codón
- Unidad de Cuidados Agudos Cardiovasculares, Servicio de Cardiología, Hospital Universitario La Paz, Madrid, Spain; Instituto de Investigación Hospital Universitario La Paz (IdiPAZ), Madrid, Spain
| | - Daniel García-Arribas
- Unidad de Cuidados Agudos Cardiovasculares, Servicio de Cardiología, Hospital Universitario La Paz, Madrid, Spain
| | - Eduardo Armada-Romero
- Unidad de Cuidados Agudos Cardiovasculares, Servicio de Cardiología, Hospital Universitario La Paz, Madrid, Spain; Instituto de Investigación Hospital Universitario La Paz (IdiPAZ), Madrid, Spain
| | - Esteban López-De-Sa
- Unidad de Cuidados Agudos Cardiovasculares, Servicio de Cardiología, Hospital Universitario La Paz, Madrid, Spain; Instituto de Investigación Hospital Universitario La Paz (IdiPAZ), Madrid, Spain
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8
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Javanbakht M, Mashayekhi A, Hemami MR, Branagan-Harris M, Keeble TR, Yaghoubi M. Cost-Effectiveness Analysis of Intravascular Targeted Temperature Management after Cardiac Arrest in England. PHARMACOECONOMICS - OPEN 2022; 6:549-562. [PMID: 35503202 PMCID: PMC9283555 DOI: 10.1007/s41669-022-00333-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Accepted: 03/30/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND Targeted temperature management (TTM) has been shown to improve neurological outcomes and survival in patients resuscitated from cardiac arrest; however, the cost effectiveness of multiple TTM methods is not well studied. OBJECTIVE This study aimed to evaluate the cost effectiveness of intravascular temperature management (IVTM) using Thermogard XP compared with surface cooling methods after cardiac arrest in the England from the perspectives of the UK national health service and Personal Social Services. METHODS We developed a multi-state Markov model that evaluated IVTM (Thermogard XP) compared with surface cooling using two different devices (Blanketrol III and Arctic Sun 5000) over a short-term and lifetime time horizon. Model input parameters were obtained from the literature and local databases. We assumed a hypothetical cohort of 1000 patients who required TTM after cardiac arrest per year in the England. The outcomes were costs (in £, year 2019 values) and quality-adjusted life-years (QALYs), discounted at 3.5% annually. Deterministic and probabilistic sensitivity analyses were undertaken to examine the effect of alternative assumptions and uncertainty in model parameters on the results. RESULTS The cost-effectiveness analysis determined that Thermogard XP resulted in direct cost savings of £2339 and £2925 (per patient) compared with Blanketrol III and Arctic Sun 5000, respectively, and a gain of 0.98 QALYs over the patient lifetime. The probabilistic sensitivity analysis demonstrated that the probability of Thermogard XP being cost saving would be 69.2% and 65.3% versus the Arctic Sun 5000 and Blanketrol III, respectively. CONCLUSION Implementation of IVTM using Thermogard XP can lead to cost savings and improved patient quality of life versus surface cooling methods.
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Affiliation(s)
- Mehdi Javanbakht
- Optimax Access UK Ltd, Market Access Consultancy, Southampton, UK
| | | | | | | | - Thomas R Keeble
- Essex Cardiothoracic Centre, Basildon, UK
- MTRC, Anglia Ruskin School of Medicine, Chelmsford, UK
| | - Mohsen Yaghoubi
- Mercer University College of Pharmacy, 3001 Mercer University Dr, Atlanta, GA, 30341, USA.
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9
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Krychtiuk KA, Fordyce CB, Hansen CM, Hassager C, Jentzer JC, Menon V, Perman SM, van Diepen S, Granger CB. Targeted temperature management after out of hospital cardiac arrest: quo vadis? EUROPEAN HEART JOURNAL. ACUTE CARDIOVASCULAR CARE 2022; 11:512-521. [PMID: 35579006 DOI: 10.1093/ehjacc/zuac054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 05/02/2022] [Accepted: 05/03/2022] [Indexed: 06/15/2023]
Abstract
Targeted temperature management (TTM) has become a cornerstone in the treatment of comatose post-cardiac arrest patients over the last two decades. Belief in the efficacy of this intervention for improving neurologically intact survival was based on two trials from 2002, one truly randomized-controlled and one small quasi-randomized trial, without clear confirmation of that finding. Subsequent large randomized trials reported no difference in outcomes between TTM at 33 vs. 36°C and no benefit of TTM at 33°C as compared with fever control alone. Given that these results may help shape post-cardiac arrest patient care, we sought to review the history and rationale as well as trial evidence for TTM, critically review the TTM2 trial, and highlight gaps in knowledge and research needs for the future. Finally, we provide contemporary guidance for the use of TTM in daily clinical practice.
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Affiliation(s)
- Konstantin A Krychtiuk
- Duke Clinical Research Institute, Duke Health, 300 W Morgan Street, Durham, NC 27701, USA
| | - Christopher B Fordyce
- Division of Cardiology, University of British Columbia, Vancouver, BC, Canada
- Centre for Cardiovascular Innovation, University of British Columbia, Vancouver, BC, Canada
| | - Carolina M Hansen
- Copenhagen Emergency Medical Services, University of Copenhagen, Copenhagen, Denmark
- Department of Cardiology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Christian Hassager
- Department of Cardiology, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Jacob C Jentzer
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN, USA
| | - Venu Menon
- Heart and Vascular Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Sarah M Perman
- Department of Emergency Medicine, Center for Women's Health Research, University of Colorado School of Medicine, Aurora, CO, USA
| | - Sean van Diepen
- Canadian VIGOUR Center, University of Alberta, Edmonton, AB, Canada
- Department of Critical Care Medicine and Division of Cardiology, University of Alberta, Edmonton, AB, Canada
- Department of Medicine, University of Alberta, Edmonton, AB, Canada
| | - Christopher B Granger
- Duke Clinical Research Institute, Duke Health, 300 W Morgan Street, Durham, NC 27701, USA
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10
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Jaffar JLY, Fook-Chong S, Shahidah N, Ho AFW, Ng YY, Arulanandam S, White A, Liew LX, Asyikin N, Leong BSH, Gan HN, Mao D, Chia MYC, Cheah SO, Ong MEH. Inter-hospital trends of post-resuscitation interventions and outcomes of out-of-hospital cardiac arrest in Singapore. ANNALS OF THE ACADEMY OF MEDICINE, SINGAPORE 2022; 51:341-350. [PMID: 35786754 DOI: 10.47102/annals-acadmedsg.2021498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
INTRODUCTION Hospital-based resuscitation interventions, such as therapeutic temperature management (TTM), emergency percutaneous coronary intervention (PCI) and extracorporeal membrane oxygenation (ECMO) can improve outcomes in out-of-hospital cardiac arrest (OHCA). We investigated post-resuscitation interventions and hospital characteristics on OHCA outcomes across public hospitals in Singapore over a 9-year period. METHODS This was a prospective cohort study of all OHCA cases that presented to 6 hospitals in Singapore from 2010 to 2018. Data were extracted from the Pan-Asian Resuscitation Outcomes Study Clinical Research Network (PAROS CRN) registry. We excluded patients younger than 18 years or were dead on arrival at the emergency department. The outcomes were 30-day survival post-arrest, survival to admission, and neurological outcome. RESULTS The study analysed 17,735 cases. There was an increasing rate of provision of TTM, emergency PCI and ECMO (P<0.001) in hospitals, and a positive trend of survival outcomes (P<0.001). Relative to hospital F, hospitals B and C had lower provision rates of TTM (≤5.2%). ECMO rate was consistently <1% in all hospitals except hospital F. Hospitals A, B, C, E had <6.5% rates of provision of emergency PCI. Relative to hospital F, OHCA cases from hospitals A, B and C had lower odds of 30-day survival (adjusted odds ratio [aOR]<1; P<0.05 for hospitals A-C) and lower odds of good neurological outcomes (aOR<1; P<0.05 for hospitals A-C). OHCA cases from academic hospitals had higher odds ratio (OR) of 30-day survival (OR 1.3, 95% CI 1.1-1.5) than cases from hospitals without an academic status. CONCLUSION Post-resuscitation interventions for OHCA increased across all hospitals in Singapore from 2010 to 2018, correlating with survival rates. The academic status of hospitals was associated with improved survival.
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11
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Índice biespectral y tasa de supresión tras parada cardiaca: ¿son útiles para individualizar planes de escalada terapéutica? Rev Esp Cardiol 2022. [DOI: 10.1016/j.recesp.2022.03.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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12
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Kaylor HL, Wiencek C, Hundt E. Targeted Temperature Management: A Program Evaluation. AACN Adv Crit Care 2022; 33:38-52. [PMID: 35259224 DOI: 10.4037/aacnacc2022398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
In the United States, more than 350 000 cardiac arrests occur annually. The survival rate after an out-of-hospital cardiac arrest remains low. The majority of patients who have return of spontaneous circulation will die of complications of hypoxic-ischemic brain injury. Targeted temperature management is the only recommended neuroprotective measure for those who do not regain consciousness after return of spontaneous circulation. Despite current practices, a review of the literature revealed that evidence on the ideal time to achieve target temperature after return of spontaneous circulation remains equivocal. A program evaluation of a targeted temperature management program at an academic center was performed; the focus was on timing components of targeted temperature management. The program evaluation revealed that nurse-driven, evidence-based protocols can lead to optimal patient outcomes in this low-frequency, high-impact therapy.
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Affiliation(s)
- Hannah L Kaylor
- Hannah L. Kaylor is CICU APP Fellow, Emory Healthcare, Division of Cardiology, 1364 Clifton Rd NE, Atlanta, GA 30322
| | - Clareen Wiencek
- Clareen Wiencek is Professor of Nursing, School of Nursing, University of Virginia, Charlottesville, Virginia
| | - Elizabeth Hundt
- Elizabeth Hundt is Assistant Professor of Nursing, School of Nursing, University of Virginia, Charlottesville, Virginia
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13
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Ahn SJ, Kim YH, Lee JH, Lee DW, Hwang SY, Lee BK, Cho IS, Oh SH, Cha K. Relationship between cooling time and neurological outcomes in targeted temperature management. Acad Emerg Med 2022; 29:729-735. [PMID: 35064724 DOI: 10.1111/acem.14440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 12/19/2021] [Accepted: 01/10/2022] [Indexed: 11/28/2022]
Abstract
OBJECTIVES The relationship between cooling time (CT) variables and neurological outcomes is controversial. We evaluated the relationship between CT and neurological outcomes in out-of-hospital cardiac arrest (OHCA) patients treated with targeted temperature management (TTM). METHODS We conducted a multicenter, prospective, and registry-based study of OHCA survivors treated with TTM. CT was defined as the time from restoration of spontaneous circulation to achievement of the target temperature. The primary outcome was a favorable neurological outcome at 6 months. Multilevel logistic regression analysis was performed to test the relationship between CT and the primary outcome. RESULTS Overall, the favorable neurological outcome rates at 6 months were 29.8% in 937 patients. When CT was stratified into categories of 0-3, 3.1-6, 6.1-9, 9.1-12, and >12 h, according to 3-h intervals, the primary outcome rates were 8.2%, 22.7%, 35.5%, 44.7%, and 44.5%, respectively (p < 0.001). Significant differences were not found in multilevel logistic regression analysis; the adjusted odds ratios (95% confidence interval) of each category for the primary outcome compared to the 0-3-h group were 0.81 (0.32 to 2.04), 0.77 (0.30 to 2.01), 1.26 (0.43 to 3.68), and 1.06 (0.37 to 3.06). CONCLUSIONS We did not find a relationship between CT and neurological outcomes at 6 months.
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Affiliation(s)
- Seong Jun Ahn
- Department of Emergency Medicine, Samsung Changwon Hospital Sungkyunkwan University School of Medicine Changwon South Korea
| | - Yong Hwan Kim
- Department of Emergency Medicine, Samsung Changwon Hospital Sungkyunkwan University School of Medicine Changwon South Korea
| | - Jun Ho Lee
- Department of Emergency Medicine, Samsung Changwon Hospital Sungkyunkwan University School of Medicine Changwon South Korea
| | - Dong Woo Lee
- Department of Emergency Medicine, Samsung Changwon Hospital Sungkyunkwan University School of Medicine Changwon South Korea
| | - Seong Youn Hwang
- Department of Emergency Medicine, Samsung Changwon Hospital Sungkyunkwan University School of Medicine Changwon South Korea
| | - Byung Kook Lee
- Department of Emergency Medicine, Chonnam National University Hospital Chonnam National University Medical School Gwangju South Korea
| | - In Soo Cho
- Department of Emergency Medicine Hanil General Hospital Seoul South Korea
| | - Sang Hoon Oh
- Department of Emergency Medicine, Seoul St. Mary's Hospital The Catholic University of Korea College of Medicine Seoul South Korea
| | - Kyoung‐Chul Cha
- Department of Emergency Medicine Yonsei University Wonju College of Medicine Wonju South Korea
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14
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Abstract
PURPOSE OF REVIEW Most patients who are successfully resuscitated after cardiac arrest are initially comatose and require mechanical ventilation and other organ support in an ICU. Knowledge about the optimal strategy for treating these patients is evolving rapidly. This review will summarize the evidence on key aspects of postarrest care and prognostication, with a focus on actionable parameters that may impact patient survival and neurologic outcomes. RECENT FINDINGS Optimal targets for arterial blood oxygen and carbon dioxide in comatose postcardiac arrest patients remain uncertain. Observational data are conflicting and the few randomized controlled trials to date have failed to show that different ranges of blood oxygen and carbon dioxide values impact on biomarkers of neurological injury. The Targeted Temperature Management 2 (TTM-2) trial has documented no difference in 6-month mortality among comatose postcardiac arrest patients managed at 33 oC versus controlled normothermia. An extensive systematic review of the evidence on prognostication of outcome among comatose postcardiac arrest patients underpins new prognostication guidelines. SUMMARY Clinical guidelines for postresuscitation care have recently been updated and incorporate all the available science supporting the treatment of postcardiac arrests. At a minimum, fever should be strictly avoided in comatose postcardiac patients. Prognostication must involve multiple modalities and should not be attempted until assessment confounders have been sufficiently excluded.
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15
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Comparison of hydrogel pad and water-circulating blanket cooling methods for targeted temperature management: A propensity score-matched analysis from a prospective multicentre registry. Resuscitation 2021; 169:78-85. [PMID: 34678333 DOI: 10.1016/j.resuscitation.2021.10.021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Revised: 10/08/2021] [Accepted: 10/11/2021] [Indexed: 11/21/2022]
Abstract
BACKGROUND Various methods have been used to control body temperature in targeted temperature management (TTM), but few studies have compared specific subtypes of surface cooling systems. The aim of this study was to compare the efficiencies and neurological outcomes between hydrogels pad and water-circulating blanket cooling methods. METHODS We conducted a multicentre, prospective, registry-based study of out-of-hospital cardiac arrest patients treated with TTM between 2015 and 2018. We compared the neurological outcomes, efficacies for cooling, and adverse events between patients who received TTM using a hydrogel pad and water-circulating blanket cooling. Patients were one-to-one matched using propensity scores to adjust for differences in the baseline characteristics of each cooling method. The primary outcome was a favourable neurological outcome at 6 months. RESULTS We included 1,132 patients in the analysis, 870 of whom underwent hydrogel pad cooling, and the remaining 262 underwent water-circulating blanket cooling. In the unmatched cohort, a greater number of adverse events occurred in the water-circulating blanket group. The favourable neurologic outcome rates at 6 months were similar between the hydrogel pad group and the water circulating blanket group (30.2% vs. 29.8%, p = 0.939). In the propensity-matched cohort, which included 184 pairs, the rates of adverse events between the two groups were similar. The similarity of favourable neurologic outcome rates at 6 months between the two groups persisted (28.8% vs. 29.9%, p = 0.819). CONCLUSION Neurological outcomes and adverse events between the hydrogel pad cooling and water-circulating blanket cooling groups were similar.
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16
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Chen S, Lachance BB, Gao L, Jia X. Targeted temperature management and early neuro-prognostication after cardiac arrest. J Cereb Blood Flow Metab 2021; 41:1193-1209. [PMID: 33444088 PMCID: PMC8142127 DOI: 10.1177/0271678x20970059] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Targeted temperature management (TTM) is a recommended neuroprotective intervention for coma after out-of-hospital cardiac arrest (OHCA). However, controversies exist concerning the proper implementation and overall efficacy of post-CA TTM, particularly related to optimal timing and depth of TTM and cooling methods. A review of the literature finds that optimizing and individualizing TTM remains an open question requiring further clinical investigation. This paper will summarize the preclinical and clinical trial data to-date, current recommendations, and future directions of this therapy, including new cooling methods under investigation. For now, early induction, maintenance for at least 24 hours, and slow rewarming utilizing endovascular methods may be preferred. Moreover, timely and accurate neuro-prognostication is valuable for guiding ethical and cost-effective management of post-CA coma. Current evidence for early neuro-prognostication after TTM suggests that a combination of initial prediction models, biomarkers, neuroimaging, and electrophysiological methods is the optimal strategy in predicting neurological functional outcomes.
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Affiliation(s)
- Songyu Chen
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, MD, USA.,Department of Neurosurgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Brittany Bolduc Lachance
- Program in Trauma, Department of Neurology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Liang Gao
- Department of Neurosurgery, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Xiaofeng Jia
- Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, MD, USA.,Department of Orthopedics, University of Maryland School of Medicine, Baltimore, MD, USA.,Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, MD, USA.,Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD, USA.,Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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17
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Boissady E, Kohlhauer M, Lidouren F, Hocini H, Lefebvre C, Chateau-Jouber S, Mongardon N, Deye N, Cariou A, Micheau P, Ghaleh B, Tissier R. Ultrafast Hypothermia Selectively Mitigates the Early Humoral Response After Cardiac Arrest. J Am Heart Assoc 2020; 9:e017413. [PMID: 33198571 PMCID: PMC7763769 DOI: 10.1161/jaha.120.017413] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Background Total liquid ventilation (TLV) has been shown to prevent neurological damage though ultrafast cooling in animal models of cardiac arrest. We investigated whether its neuroprotective effect could be explained by mitigation of early inflammatory events. Methods and Results Rabbits were submitted to 10 minutes of ventricular fibrillation. After resuscitation, they underwent normothermic follow‐up (control) or ultrafast cooling by TLV and hypothermia maintenance for 3 hours (TLV). Immune response, survival, and neurological dysfunction were assessed for 3 days. TLV improved neurological recovery and reduced cerebral lesions and leukocyte infiltration as compared with control (eg, neurological dysfunction score=34±6 versus 66±6% at day 1, respectively). TLV also significantly reduced interleukin‐6 blood levels during the hypothermic episode (298±303 versus 991±471 pg/mL in TLV versus control at 3 hours after resuscitation, respectively), but not after rewarming (752±563 versus 741±219 pg/mL in TLV versus control at 6 hours after resuscitation, respectively). In vitro assays confirmed the high temperature sensitivity of interleukin‐6 secretion. Conversely, TLV did not modify circulating high‐mobility group box 1 levels or immune cell recruitment into the peripheral circulation. The link between interleukin‐6 early transcripts (<8 hours) and neurological outcome in a subpopulation of the previously described Epo‐ACR‐02 (High Dose of Erythropoietin Analogue After Cardiac Arrest) trial confirmed the importance of this cytokine at the early stages as compared with delayed stages (>8 hours). Conclusions The neuroprotective effect of hypothermic TLV was associated with a mitigation of humoral interleukin‐6 response. A temperature‐dependent attenuation of immune cell reactivity during the early phase of the post–cardiac arrest syndrome could explain the potent effect of rapid hypothermia. Registration URL: https://www.clinicaltrials.gov; Unique identifier: NCT00999583.
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Affiliation(s)
- Emilie Boissady
- INSERMIMRBEcole Nationale Vétérinaire d'AlfortUniv Paris Est Creteil Creteil France
| | - Matthias Kohlhauer
- INSERMIMRBEcole Nationale Vétérinaire d'AlfortUniv Paris Est Creteil Creteil France
| | - Fanny Lidouren
- INSERMIMRBEcole Nationale Vétérinaire d'AlfortUniv Paris Est Creteil Creteil France
| | - Hakim Hocini
- INSERMIMRBEcole Nationale Vétérinaire d'AlfortUniv Paris Est Creteil Creteil France.,Vaccine Research Institute Univ Paris Est-Creteil Creteil France
| | - Cécile Lefebvre
- INSERMIMRBEcole Nationale Vétérinaire d'AlfortUniv Paris Est Creteil Creteil France.,Vaccine Research Institute Univ Paris Est-Creteil Creteil France
| | | | - Nicolas Mongardon
- INSERMIMRBEcole Nationale Vétérinaire d'AlfortUniv Paris Est Creteil Creteil France.,Service d'anesthésie-Réanimation Chirurgicale DMU CARE APHPHôpitaux Universitaires Henri Mondor Créteil France
| | - Nicolas Deye
- Medical ICU Inserm U942 Lariboisiere HospitalAPHP Paris France
| | - Alain Cariou
- Service de Réanimation Médicale Hôpitaux Universitaires Paris CentreHopital Cochin Paris France
| | - Philippe Micheau
- Groupe Inolivent Université de Sherbrooke Sherbrooke Quebec Canada
| | - Bijan Ghaleh
- INSERMIMRBEcole Nationale Vétérinaire d'AlfortUniv Paris Est Creteil Creteil France
| | - Renaud Tissier
- INSERMIMRBEcole Nationale Vétérinaire d'AlfortUniv Paris Est Creteil Creteil France
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18
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Mullen I, Abella BS. Practical considerations for postarrest targeted temperature management. Turk J Emerg Med 2020; 20:157-162. [PMID: 33089022 PMCID: PMC7549514 DOI: 10.4103/2452-2473.297466] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 06/21/2020] [Indexed: 11/04/2022] Open
Abstract
Out-of-hospital cardiac arrest remains a major challenge worldwide, with survival to discharge rates of <20% in the great majority of countries. Advancements in prehospital care, including increasing deployment of automated external defibrillators and improvements in bystander cardiopulmonary resuscitation, have led to more victims achieving return of spontaneous circulation (ROSC), yet the majority of patients with ROSC suffer in-hospital mortality or significant neurologic injuries that persist after discharge. This postarrest morbidity and mortality is largely due to a complex syndrome of mitochondrial dysfunction, inflammatory cascades and cellular injuries known as the postcardiac arrest syndrome (PCAS). The management of PCAS represents a formidable task for emergency and critical care providers. A cornerstone of PCAS treatment is the use of aggressive core body temperature control using thermostatically controlled devices, known as targeted temperature management (TTM). This therapy, demonstrated to be effective in improving both survival and neurologic recovery by several randomized controlled trials nearly 20 years ago, remains a major topic of clinical investigation. Important practical questions about TTM remain: How soon must providers initiate the therapy? What TTM goal temperature maximizes benefit while limiting potential adverse effects? How long should TTM therapy be continued in patients following resuscitation? In this review, we will address these issues and summarize clinical research over the past decade that has added to our fund of knowledge surrounding this important treatment of patients following cardiac arrest.
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Affiliation(s)
- Isabelle Mullen
- Department of Emergency Medicine, The Center for Resuscitation Science, School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Benjamin S Abella
- Department of Emergency Medicine, The Center for Resuscitation Science, School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
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19
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Stanger D, Kawano T, Malhi N, Grunau B, Tallon J, Wong GC, Christenson J, Fordyce CB. Door-to-Targeted Temperature Management Initiation Time and Outcomes in Out-of-Hospital Cardiac Arrest: Insights From the Continuous Chest Compressions Trial. J Am Heart Assoc 2020; 8:e012001. [PMID: 31055981 PMCID: PMC6512141 DOI: 10.1161/jaha.119.012001] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Background Targeted temperature management (TTM) is a recommended treatment modality to improve neurological outcomes in patients with out‐of‐hospital cardiac arrest. The impact of the duration from hospital admission to TTM initiation (door‐to‐TTM; DTT) on clinical outcomes has not been well elucidated. We hypothesized that shorter DTT initiation intervals would be associated with improved survival with favorable neurological outcome. Methods and Results We performed a post hoc analysis of nontraumatic paramedic‐treated out‐of‐hospital cardiac arrests. The primary outcome was favorable neurological status at hospital discharge, with a secondary outcome of survival to discharge. We fit a logistic regression analysis to determine the association of early compared with delayed DTT, dichotomized by the median DTT duration, and outcomes. Of 3805 patients enrolled in the CCC (Continuous Chest Compressions) Trial in British Columbia, 570 were included in this analysis. There was substantial variation in DTT among patients receiving TTM. The median DTT duration was 122 minutes (interquartile range 35‐218). Favorable neurological outcomes in the early and delayed DTT groups were 48% and 38%, respectively. Compared with delayed DTT (interquartile range 167‐319 minutes), early DTT (interquartile range 20‐81 minutes) was associated with survival (adjusted odds ratio 1.56, 95% CI 1.02‐2.38) but not with favorable neurological outcomes (adjusted odds ratio 1.45, 95% CI, 0.94‐2.22) at hospital discharge. Conclusions There was wide variability in the initiation of TTM among comatose out‐of‐hospital cardiac arrest survivors. Initiation of TTM within 122 minutes of hospital admission was associated with improved survival. These results support in‐hospital efforts to achieve early DTT among out‐of‐hospital cardiac arrest patients admitted to the hospital. See Editorial Schenone and Menon
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Affiliation(s)
- Dylan Stanger
- 1 Division of Cardiology Department of Medicine University of British Columbia Vancouver British Columbia Canada
| | | | - Navraj Malhi
- 1 Division of Cardiology Department of Medicine University of British Columbia Vancouver British Columbia Canada
| | - Brian Grunau
- 3 Department of Emergency Medicine University of British Columbia Vancouver British Columbia Canada
| | - John Tallon
- 3 Department of Emergency Medicine University of British Columbia Vancouver British Columbia Canada.,4 British Columbia Emergency Health Services Vancouver British Columbia Canada
| | - Graham C Wong
- 1 Division of Cardiology Department of Medicine University of British Columbia Vancouver British Columbia Canada
| | - James Christenson
- 3 Department of Emergency Medicine University of British Columbia Vancouver British Columbia Canada
| | - Christopher B Fordyce
- 1 Division of Cardiology Department of Medicine University of British Columbia Vancouver British Columbia Canada
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20
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Kuroda Y, Kawakita K. Targeted temperature management for postcardiac arrest syndrome. JOURNAL OF NEUROCRITICAL CARE 2020. [DOI: 10.18700/jnc.200001] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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21
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Szabó Z, Ujvárosy D, Ötvös T, Sebestyén V, Nánási PP. Handling of Ventricular Fibrillation in the Emergency Setting. Front Pharmacol 2020; 10:1640. [PMID: 32140103 PMCID: PMC7043313 DOI: 10.3389/fphar.2019.01640] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Accepted: 12/16/2019] [Indexed: 12/11/2022] Open
Abstract
Ventricular fibrillation (VF) and sudden cardiac death (SCD) are predominantly caused by channelopathies and cardiomyopathies in youngsters and coronary heart disease in the elderly. Temporary factors, e.g., electrolyte imbalance, drug interactions, and substance abuses may play an additive role in arrhythmogenesis. Ectopic automaticity, triggered activity, and reentry mechanisms are known as important electrophysiological substrates for VF determining the antiarrhythmic therapies at the same time. Emergency need for electrical cardioversion is supported by the fact that every minute without defibrillation decreases survival rates by approximately 7%–10%. Thus, early defibrillation is an essential part of antiarrhythmic emergency management. Drug therapy has its relevance rather in the prevention of sudden cardiac death, where early recognition and treatment of the underlying disease has significant importance. Cardioprotective and antiarrhythmic effects of beta blockers in patients predisposed to sudden cardiac death were highlighted in numerous studies, hence nowadays these drugs are considered to be the cornerstones of the prevention and treatment of life-threatening ventricular arrhythmias. Nevertheless, other medical therapies have not been proven to be useful in the prevention of VF. Although amiodarone has shown positive results occasionally, this was not demonstrated to be consistent. Furthermore, the potential proarrhythmic effects of drugs may also limit their applicability. Based on these unfavorable observations we highlight the importance of arrhythmia prevention, where echocardiography, electrocardiography and laboratory testing play a significant role even in the emergency setting. In the following we provide a summary on the latest developments on cardiopulmonary resuscitation, and the evaluation and preventive treatment possibilities of patients with increased susceptibility to VF and SCD.
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Affiliation(s)
- Zoltán Szabó
- Department of Emergency Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Dóra Ujvárosy
- Department of Emergency Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary.,Doctoral School of Health Sciences, Faculty of Public Health, University of Debrecen, Debrecen, Hungary
| | - Tamás Ötvös
- Department of Emergency Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary.,Doctoral School of Health Sciences, Faculty of Public Health, University of Debrecen, Debrecen, Hungary
| | - Veronika Sebestyén
- Department of Emergency Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary.,Doctoral School of Health Sciences, Faculty of Public Health, University of Debrecen, Debrecen, Hungary
| | - Péter P Nánási
- Department of Physiology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary.,Department of Dental Physiology, Faculty of Dentistry, University of Debrecen, Debrecen, Hungary
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22
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Lyden P, Anderson A, Rajput P. Therapeutic hypothermia and Type II errors: Do not throw out the baby with the ice water. Brain Circ 2019; 5:203-210. [PMID: 31950096 PMCID: PMC6950510 DOI: 10.4103/bc.bc_53_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 11/25/2019] [Accepted: 12/11/2019] [Indexed: 11/04/2022] Open
Abstract
After initial enthusiasm for mild therapeutic hypothermia (TH) treatment after brain injuries, including global cerebral ischemia after cardiac arrest, subsequent trials suggested similar benefit using only targeted temperature management (TTM), with fewer side effects. Globally, effective treatment of brain ischemia with TH has declined. Recent data suggest, however, that TH to 33°C may be superior to TTM. We review the background and rationale underlying TH and TTM. We present previously published data from our own laboratory that confirms TH to 33°C provides superior brain cytoprotection, compared to 35°C or 37°C, over a range of delays to treatment and several durations of TH. We illustrate that the treatment effect size of either or 35 is superior to 37, but the effect size difference between 33 and 35, although significant, is small. We estimate that to demonstrate the superiority of TTM over TH, a clinical trial would need between 3,000 and 9,000 patients depending on the desired treatment effect size. Our review and our own data suggest that TH to 33°C is superior to TTM to 36°C, but an extremely large clinical trial would be needed to demonstrate the difference.
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Affiliation(s)
- Patrick Lyden
- Department of Neurology, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Ariana Anderson
- Department of Psychiatry and Biobehavioral Sciences, Los Angeles, CA, USA.,Department of Statistics, UCLA, Los Angeles, CA, USA
| | - Padmesh Rajput
- Department of Neurology, Cedars-Sinai Medical Center, Los Angeles, CA, USA
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23
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Schenone AL, Menon V. Door-to-Targeted Temperature Management Initiation After Out-of-Hospital Cardiac Arrest: A New Quality Metric in Postresuscitation Care? J Am Heart Assoc 2019; 8:e012666. [PMID: 31057012 PMCID: PMC6512134 DOI: 10.1161/jaha.119.012666] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
See Article Stanger et al
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Affiliation(s)
- Aldo L Schenone
- 1 Department of Cardiovascular Medicine Cleveland Clinic Cleveland OH
| | - Venu Menon
- 1 Department of Cardiovascular Medicine Cleveland Clinic Cleveland OH
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