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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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Shin M, Fujita M, Hifumi T, Koga Y, Yagi T, Nakahara T, Todani M, Kaneda K, Tsuruta R. Rapid rewarming rate associated with favorable neurological outcomes in patients with post-cardiac arrest syndrome patients treated with targeted temperature management. Acute Med Surg 2023; 10:e897. [PMID: 37841965 PMCID: PMC10568044 DOI: 10.1002/ams2.897] [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: 07/05/2023] [Revised: 09/09/2023] [Accepted: 09/19/2023] [Indexed: 10/17/2023] Open
Abstract
Aim To determine whether the rewarming rate is associated with neurological outcomes in patients with post-cardiac arrest syndrome treated with targeted temperature management (TTM) at 34°C. Methods We conducted a retrospective analysis of a nationwide cohort study of out-of-hospital cardiac arrest in Japan. Adult patients who experienced a return of spontaneous circulation and completed TTM at 34°C between June 2014 and December 2019 were divided equally into three groups (slow, moderate, and rapid) according to their rewarming rates from 34°C to 36°C. The rates of favorable neurological outcomes (Cerebral Performance Category of 1-2 after 30 days) were compared among the groups, and the adjusted odds ratios for a favorable neurological outcome were calculated for the groups. Results We analyzed 348, 357, and 358 patients in the slow, moderate, and rapid groups, respectively. The periods of rewarming from 34°C to 36°C were 41.9 ± 10.5, 22.4 ± 1.8, and 12.2 ± 3.6 h, respectively. The number of favorable neurological outcomes after 30 days was 121 (34.8%), 125 (35.0%), and 147 (41.1%), respectively, with no significant differences among the three groups (p = 0.145). Rapid rewarming was independently associated with a favorable neurological outcome compared with slow rewarming (adjusted odds ratio 1.57 [95% confidence interval 1.04-2.37]; p = 0.031). Conclusions Rapid rewarming after TTM at 34°C was associated with a more favorable neurological outcome than slow rewarming.
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Affiliation(s)
- Masaru Shin
- Advanced Medical Emergency and Critical Care CenterYamaguchi University HospitalUbeJapan
| | - Motoki Fujita
- Acute and General MedicineYamaguchi University Graduate School of MedicineUbeJapan
| | - Toru Hifumi
- Department of Emergency and Critical Care MedicineSt. Luke's International HospitalTokyoJapan
| | - Yasutaka Koga
- Advanced Medical Emergency and Critical Care CenterYamaguchi University HospitalUbeJapan
| | - Takeshi Yagi
- Advanced Medical Emergency and Critical Care CenterYamaguchi University HospitalUbeJapan
| | - Takashi Nakahara
- Advanced Medical Emergency and Critical Care CenterYamaguchi University HospitalUbeJapan
| | - Masaki Todani
- Acute and General MedicineYamaguchi University Graduate School of MedicineUbeJapan
| | - Kotaro Kaneda
- Advanced Medical Emergency and Critical Care CenterYamaguchi University HospitalUbeJapan
| | - Ryosuke Tsuruta
- Advanced Medical Emergency and Critical Care CenterYamaguchi University HospitalUbeJapan
- Acute and General MedicineYamaguchi University Graduate School of MedicineUbeJapan
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Lascarrou JB, Guichard E, Reignier J, Le Gouge A, Pouplet C, Martin S, Lacherade JC, Colin G. 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. Crit Care 2021; 25:434. [PMID: 34920723 PMCID: PMC8680374 DOI: 10.1186/s13054-021-03842-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Accepted: 11/24/2021] [Indexed: 02/06/2023] Open
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. Supplementary Information The online version contains supplementary material available at 10.1186/s13054-021-03842-9.
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Affiliation(s)
- Jean-Baptiste Lascarrou
- Médecine Intensive Reanimation, University Hospital Center, 30 Boulevard Jean Monnet, 44093, Nantes Cedex 1, France. .,Paris Cardiovascular Research Center, INSERM U970, Paris, France. .,AfterROSC Network, Paris, France.
| | | | - Jean Reignier
- Médecine Intensive Reanimation, University Hospital Center, 30 Boulevard Jean Monnet, 44093, Nantes Cedex 1, France
| | | | - Caroline Pouplet
- Médecine Intensive Reanimation, District Hospital Center, La Roche-sur-Yon, France
| | - Stéphanie Martin
- Médecine Intensive Reanimation, District Hospital Center, La Roche-sur-Yon, France
| | | | - Gwenhael Colin
- AfterROSC Network, Paris, France.,Médecine Intensive Reanimation, District Hospital Center, La Roche-sur-Yon, France
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Abstract
and that reference citations are not used in the synopsis. A devastating complication of cardiac arrest is hypoxic-ischemic injury, which leads to neurologic dysfunction and subsequently high mortality. Post-cardiac arrest care is complex and requires a multimodal approach to manage hemodynamic instability as well as provide neuroprotection. Targeted temperature management is recommended by the American Heart Association as well as the International Liaison Committee on Resuscitation as a class 1 intervention for postarrest neuroprotection in patients who remain unresponsive after cardiac arrest.
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Affiliation(s)
- Nicole Kupchik
- Nicole Kupchik Consulting, Inc., Evergreen Health, Seattle, WA, USA.
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Annoni F, Donadello K, Nobile L, Taccone FS. A practical approach to the use of targeted temperature management after cardiac arrest. Minerva Anestesiol 2020; 86:1103-1110. [PMID: 32463209 DOI: 10.23736/s0375-9393.20.14399-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Among comatose survivors after cardiac arrest, target temperature management (TTM) is considered the most effective treatment to reduce the consequences of postanoxic brain injury. Several international guidelines have thus incorporated TTM in the management of the postresuscitation phase. However, despite extremely promising results in animal models and in randomized trials including selected patient cohorts, TTM benefits on neurological outcome have been questioned. Moreover, TTM potential side effects have raised some concerns on its wide application in all cardiac arrest patients in different healthcare systems. There is indeed still relatively large uncertainty concerning some practical aspects related to TTM application, such as: A) how to select patients who will benefit the most from TTM; B) the optimal time to initiate TTM; C) the best target temperature; D) the most effective methods to provide TTM; E) the length of the cooling phase; and F) the optimal rewarming rate and fever control strategies. The purpose of this manuscript is to review and discuss the most recent advances in TTM use after cardiac arrest and to give some proposals on how to deal with all these relevant practical questions.
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Affiliation(s)
- Filippo Annoni
- Department of Intensive Care, Erasme University Hospital, University of Brussels, Brussels, Belgium
| | - Katia Donadello
- Department of Anesthesia and Intensive Care B, AOUI University Hospital Integrated Trust, University of Verona, Verona, Italy
| | - Leda Nobile
- Department of Intensive Care, Erasme University Hospital, University of Brussels, Brussels, Belgium
| | - Fabio S Taccone
- Department of Intensive Care, Erasme University Hospital, University of Brussels, Brussels, Belgium -
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Hosseini M, Wilson RH, Crouzet C, Amirhekmat A, Wei KS, Akbari Y. Resuscitating the Globally Ischemic Brain: TTM and Beyond. Neurotherapeutics 2020; 17:539-562. [PMID: 32367476 PMCID: PMC7283450 DOI: 10.1007/s13311-020-00856-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Cardiac arrest (CA) afflicts ~ 550,000 people each year in the USA. A small fraction of CA sufferers survive with a majority of these survivors emerging in a comatose state. Many CA survivors suffer devastating global brain injury with some remaining indefinitely in a comatose state. The pathogenesis of global brain injury secondary to CA is complex. Mechanisms of CA-induced brain injury include ischemia, hypoxia, cytotoxicity, inflammation, and ultimately, irreversible neuronal damage. Due to this complexity, it is critical for clinicians to have access as early as possible to quantitative metrics for diagnosing injury severity, accurately predicting outcome, and informing patient care. Current recommendations involve using multiple modalities including clinical exam, electrophysiology, brain imaging, and molecular biomarkers. This multi-faceted approach is designed to improve prognostication to avoid "self-fulfilling" prophecy and early withdrawal of life-sustaining treatments. Incorporation of emerging dynamic monitoring tools such as diffuse optical technologies may provide improved diagnosis and early prognostication to better inform treatment. Currently, targeted temperature management (TTM) is the leading treatment, with the number of patients needed to treat being ~ 6 in order to improve outcome for one patient. Future avenues of treatment, which may potentially be combined with TTM, include pharmacotherapy, perfusion/oxygenation targets, and pre/postconditioning. In this review, we provide a bench to bedside approach to delineate the pathophysiology, prognostication methods, current targeted therapies, and future directions of research surrounding hypoxic-ischemic brain injury (HIBI) secondary to CA.
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Affiliation(s)
- Melika Hosseini
- Department of Neurology, School of Medicine, University of California, Irvine, USA
| | - Robert H Wilson
- Department of Neurology, School of Medicine, University of California, Irvine, USA
- Beckman Laser Institute, University of California, Irvine, USA
| | - Christian Crouzet
- Department of Neurology, School of Medicine, University of California, Irvine, USA
- Beckman Laser Institute, University of California, Irvine, USA
| | - Arya Amirhekmat
- Department of Neurology, School of Medicine, University of California, Irvine, USA
| | - Kevin S Wei
- Department of Neurology, School of Medicine, University of California, Irvine, USA
| | - Yama Akbari
- Department of Neurology, School of Medicine, University of California, Irvine, USA.
- Beckman Laser Institute, University of California, Irvine, USA.
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Taccone FS, Picetti E, Vincent JL. High Quality Targeted Temperature Management (TTM) After Cardiac Arrest. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2020; 24:6. [PMID: 31907075 PMCID: PMC6945621 DOI: 10.1186/s13054-019-2721-1] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Accepted: 12/23/2019] [Indexed: 12/18/2022]
Abstract
Targeted temperature management (TTM) is a complex intervention used with the aim of minimizing post-anoxic injury and improving neurological outcome after cardiac arrest. There is large variability in the devices used to achieve cooling and in protocols (e.g., for induction, target temperature, maintenance, rewarming, sedation, management of post-TTM fever). This variability can explain the limited benefits of TTM that have sometimes been reported. We therefore propose the concept of “high-quality TTM” as a way to increase the effectiveness of TTM and standardize its use in future interventional studies.
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Affiliation(s)
- Fabio Silvio Taccone
- Department of Intensive Care, Cliniques Universitaires de Bruxelles Hopital Erasme, Université Libre de Bruxelles (ULB), Route de Lennik 808, 1070, Brussels, Belgium.
| | - Edoardo Picetti
- Department of Anesthesia and Intensive Care, Parma University Hospital, Parma, Italy
| | - Jean-Louis Vincent
- Department of Intensive Care, Cliniques Universitaires de Bruxelles Hopital Erasme, Université Libre de Bruxelles (ULB), Route de Lennik 808, 1070, Brussels, Belgium
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Nielsen N, Kirkegaard H. Rewarming: The neglected phase of targeted temperature management. Resuscitation 2020; 146:249-250. [PMID: 31655094 DOI: 10.1016/j.resuscitation.2019.10.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 10/15/2019] [Indexed: 12/01/2022]
Affiliation(s)
- Niklas Nielsen
- Lund University, Helsingborg Hospital, Department of Clinical Sciences Lund, Anesthesiology and Intensive Care, Helsingborg, Sweden.
| | - Hans Kirkegaard
- Research Center for Emergency Medicine and Department of Anesthesiology and Intensive Care Medicine, Aarhus University Hospital and Aarhus University, Aarhus, Denmark
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