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Falat C. Environmental Hypothermia. Emerg Med Clin North Am 2024; 42:493-511. [PMID: 38925770 DOI: 10.1016/j.emc.2024.02.011] [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: 06/28/2024]
Abstract
Although a rare diagnosis in the Emergency Department, hypothermia affects patients in all environments, from urban to mountainous settings. Classic signs of death cannot be interpreted in the hypothermic patient, thus resulting in the mantra, "No one is dead until they're warm and dead." This comprehensive review of environmental hypothermia covers the clinical significance and pathophysiology of hypothermia, pearls and pitfalls in the prehospital management of hypothermia (including temperature measurement techniques and advanced cardiac life support deviations), necessary Emergency Department diagnostics, available rewarming modalities including extracorporeal life support, and criteria for termination of resuscitation.
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Affiliation(s)
- Cheyenne Falat
- Department of Emergency Medicine, University of Maryland School of Medicine, 110 South Paca Street, 6th Floor, Suite 200, Baltimore, MD 21201, USA.
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Shoji K, Ohbe H, Matsuyama T, Inoue A, Hifumi T, Sakamoto T, Kuroda Y, Kushimoto S. Low-flow time and outcomes in hypothermic cardiac arrest patients treated with extracorporeal cardiopulmonary resuscitation: a secondary analysis of a multi-center retrospective cohort study. J Intensive Care 2024; 12:22. [PMID: 38863061 PMCID: PMC11165865 DOI: 10.1186/s40560-024-00735-1] [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: 02/28/2024] [Accepted: 05/27/2024] [Indexed: 06/13/2024] Open
Abstract
BACKGROUND In out-of-hospital cardiac arrest (OHCA) patients with extracorporeal cardiopulmonary resuscitation (ECPR), the association between low-flow time and outcomes in accidental hypothermia (AH) patients compared to those of patients without AH has not been fully investigated. METHODS This was a secondary analysis of the retrospective multicenter registry in Japan. We enrolled patients aged ≥ 18 years who had been admitted to the emergency department for OHCA and had undergone ECPR between January, 2013 and December, 2018. AH was defined as an arrival body temperature below 32 °C. The primary outcome was survival to discharge. Cubic spline analyses were performed to assess the non-linear associations between low-flow time and outcomes stratified by the presence of AH. We also analyzed the interaction between low-flow time and the presence of AH. RESULTS Of 1252 eligible patients, 105 (8.4%) and 1147 (91.6%) were in the AH and non-AH groups, respectively. Median low-flow time was 60 (47-79) min in the AH group and 51 (42-62) min in the non-AH group. The survival discharge rates in the AH and non-AH groups were 44.8% and 25.4%, respectively. The cubic spline analyses showed that survival discharge rate remained constant regardless of low-flow time in the AH group. Conversely, a decreasing trend was identified in the survival discharge rate with longer low-flow time in the non-AH group. The interaction analysis revealed a significant interaction between low-flow time and AH in survival discharge rate (p for interaction = 0.048). CONCLUSIONS OHCA patients with arrival body temperature < 32 °C who had received ECPR had relatively good survival outcomes regardless of low-flow time, in contrast to those of patients without AH.
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Affiliation(s)
- Kosuke Shoji
- Division of Emergency and Critical Care Medicine, Tohoku University Graduate School of Medicine, 1-1, Seiryo-Machi, Aoba-ku, Sendai, Miyagi, 9808574, Japan
- Department of Emergency Medicine, Japanese Red Cross Ishinomaki Hospital, Ishinomaki, Japan
| | - Hiroyuki Ohbe
- Division of Emergency and Critical Care Medicine, Tohoku University Graduate School of Medicine, 1-1, Seiryo-Machi, Aoba-ku, Sendai, Miyagi, 9808574, Japan.
| | - Tasuku Matsuyama
- Department of Emergency Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Akihiko Inoue
- Department of Emergency and Critical Care Medicine, Hyogo Emergency Medical Center, Kobe, Japan
| | - Toru Hifumi
- Department of Emergency and Critical Care Medicine, St. Luke's International Hospital, Tokyo, Japan
| | - Tetsuya Sakamoto
- Department of Emergency Medicine, Teikyo University School of Medicine, Tokyo, Japan
| | - Yasuhiro Kuroda
- Department of Emergency Medicine, Kagawa University School of Medicine, Miki, Kagawa, Japan
| | - Shigeki Kushimoto
- Division of Emergency and Critical Care Medicine, Tohoku University Graduate School of Medicine, 1-1, Seiryo-Machi, Aoba-ku, Sendai, Miyagi, 9808574, Japan
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Condella A, Simpson NS, Bilodeau KS, Stewart B, Mandell S, Taylor M, Heather B, Bulger E, Johnson NJ, Prekker ME. Implementation of Extracorporeal CPR Programs for Out-of-Hospital Cardiac Arrest: Another Tale of Two County Hospitals. Ann Emerg Med 2024:S0196-0644(24)00005-2. [PMID: 38323952 DOI: 10.1016/j.annemergmed.2024.01.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 12/22/2023] [Accepted: 01/02/2024] [Indexed: 02/08/2024]
Abstract
Extracorporeal cardiopulmonary resuscitation (ECPR) is a form of intensive life support that has seen increasing use globally to improve outcomes for patients who experience out-of-hospital cardiac arrest (OHCA). Hospitals with advanced critical care capabilities may be interested in launching an ECPR program to offer this support to the patients they serve; however, to do so, they must first consider the significant investment of resources necessary to start and sustain the program. The existing literature describes many single-center ECPR programs and often focuses on inpatient care and patient outcomes in hospitals with cardiac surgery capabilities. However, building a successful ECPR program and using this technology to support an individual patient experiencing refractory cardiac arrest secondary to a shockable rhythm depends on efficient out-of-hospital and emergency department (ED) management. This article describes the process of implementing 2 intensivist-led ECPR programs with limited cardiac surgery capability. We focus on emergency medical services and ED clinician roles in identifying patients, mobilizing resources, initiation and management of veno-arterial extracorporeal membrane oxygenation (VA-ECMO) in the ED, and ongoing efforts to improve ECPR program quality. Each center experienced a significant learning curve to reach goals of arrest-to-flow times of cannulation for ECPR. Building consensus from multidisciplinary stakeholders, including out-of-hospital stakeholders; establishing shared expectations of ECPR outcomes; and ensuring adequate resource support for ECPR activation were all key lessons in improving our ECPR programs.
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Affiliation(s)
- Anna Condella
- Department of Emergency Medicine, University of Washington, Seattle, WA; Trauma & ECLS Programs, Harborview Medical Center, University of Washington, Seattle, WA.
| | | | - Kyle S Bilodeau
- Department of Surgery, Harborview Medical Center, University of Washington, Seattle, WA
| | - Barclay Stewart
- Department of Surgery, Harborview Medical Center, University of Washington, Seattle, WA
| | - Samuel Mandell
- Department of Surgery, UT Southwestern Medical Center, Dallas, Texas
| | - Mark Taylor
- Trauma & ECLS Programs, Harborview Medical Center, University of Washington, Seattle, WA
| | - Beth Heather
- Critical Care Nursing, Hennepin County Medical Center, Minneapolis, MN
| | - Eileen Bulger
- Department of Surgery, Harborview Medical Center, University of Washington, Seattle, WA
| | - Nicholas J Johnson
- Department of Emergency Medicine, University of Washington, Seattle, WA; Division of Pulmonary, Critical Care, and Sleep Medicine, University of Washington, Seattle, WA
| | - Matthew E Prekker
- Department of Emergency Medicine, Hennepin Healthcare, Minneapolis, MN; Department of Medicine, Hennepin Healthcare, Minneapolis, MN
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