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Maekawa T, Yamashita S, Nagao S, Hayashi N, Ohashi Y. Prolonged mild therapeutic hypothermia versus fever control with tight hemodynamic monitoring and slow rewarming in patients with severe traumatic brain injury: a randomized controlled trial. J Neurotrauma 2015; 32:422-9. [PMID: 25099730 DOI: 10.1089/neu.2013.3197] [Citation(s) in RCA: 91] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Although mild therapeutic hypothermia is an effective neuroprotective strategy for cardiac arrest/resuscitated patients, and asphyxic newborns, recent randomized controlled trials (RCTs) have equally shown good neurological outcome between targeted temperature management at 33 °C versus 36 °C, and have not shown consistent benefits in patients with traumatic brain injury (TBI). We aimed to determine the effect of therapeutic hypothermia, while avoiding some limitations of earlier studies, which included patient selection based on Glasgow coma scale (GCS), delayed initiation of cooling, short duration of cooling, inter-center variation in patient care, and relatively rapid rewarming. We conducted a multicenter RCT in patients with severe TBI (GCS 4-8). Patients were randomly assigned (2:1 allocation ratio) to either therapeutic hypothermia (32-34 °C, n = 98) or fever control (35.5-37 °C, n = 50). Patients with therapeutic hypothermia were cooled as soon as possible for ≥ 72 h and rewarmed at a rate of <1 °C/day. All patients received tight hemodynamic monitoring under intensive neurological care. The Glasgow Outcome Scale was assessed at 6 months by physicians who were blinded to the treatment allocation. The overall rates of poor neurological outcomes were 53% and 48% in the therapeutic hypothermia and fever control groups, respectively. There were no significant differences in the likelihood of poor neurological outcome (relative risk [RR] 1.24, 95% confidence interval [CI] 0.62-2.48, p = 0.597) or mortality (RR 1.82, 95% CI 0.82-4.03, p = 0.180) between the two groups. We concluded that tight hemodynamic management and slow rewarming, together with prolonged therapeutic hypothermia (32-34 °C) for severe TBI, did not improve the neurological outcomes or risk of mortality compared with strict temperature control (35.5-37 °C).
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Affiliation(s)
- Tsuyoshi Maekawa
- 1 Department of Stress and Bio-response Medicine, Yamaguchi University Graduate School of Medicine , Yamaguchi, Japan
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Goldberg SA, Rojanasarntikul D, Jagoda A. The prehospital management of traumatic brain injury. HANDBOOK OF CLINICAL NEUROLOGY 2015; 127:367-78. [PMID: 25702228 DOI: 10.1016/b978-0-444-52892-6.00023-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Traumatic brain injury (TBI) is an important cause of death and disability, particularly in younger populations. The prehospital evaluation and management of TBI is a vital link between insult and definitive care and can have dramatic implications for subsequent morbidity. Following a TBI the brain is at high risk for further ischemic injury, with prehospital interventions targeted at reducing this secondary injury while optimizing cerebral physiology. In the following chapter we discuss the prehospital assessment and management of the brain-injured patient. The initial evaluation and physical examination are discussed with a focus on interpretation of specific physical examination findings and interpretation of vital signs. We evaluate patient management strategies including indications for advanced airway management, oxygenation, ventilation, and fluid resuscitation, as well as prehospital strategies for the management of suspected or impending cerebral herniation including hyperventilation and brain-directed hyperosmolar therapy. Transport decisions including the role of triage models and trauma centers are discussed. Finally, future directions in the prehospital management of traumatic brain injury are explored.
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Affiliation(s)
- Scott A Goldberg
- Department of Emergency Medicine, Brigham & Women's Hospital, Boston, MA, USA
| | - Dhanadol Rojanasarntikul
- Department of Emergency Medicine, Mount Sinai School of Medicine, New York, NY, USA; Chulalongkorn University, Bangkok, Thailand
| | - Andrew Jagoda
- Department of Emergency Medicine, Mount Sinai School of Medicine, New York, NY, USA; Brain Trauma Foundation, New York, NY, USA.
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Launey Y, Nesseler N, Le Cousin A, Feuillet F, Garlantezec R, Mallédant Y, Seguin P. Effect of a fever control protocol-based strategy on ventilator-associated pneumonia in severely brain-injured patients. Crit Care 2014; 18:689. [PMID: 25498970 PMCID: PMC4279880 DOI: 10.1186/s13054-014-0689-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2014] [Accepted: 11/25/2014] [Indexed: 12/02/2022] Open
Abstract
Introduction Fever is associated with a poor outcome in severely brain-injured patients, and its control is one of the therapies used in this condition. But, fever suppression may promote infection, and severely brain-injured patients are frequently exposed to infectious diseases, particularly ventilator-associated pneumonia (VAP). Therefore, we designed a study to explore the role of a fever control protocol in VAP development during neuro-intensive care. Methods An observational study was performed on severely brain-injured patients hospitalized in a university ICU. The primary goal was to assess whether fever control was a risk factor for VAP in a prospective cohort in which a fever control protocol was applied and in a historical control group. Moreover, the density of VAP incidence was compared between the two groups. The statistical analysis was based on a competing risk model multivariate analysis. Results The study included 189 brain-injured patients (intervention group, n = 98, and historical control group, n = 91). The use of a fever control protocol was an independent risk factor for VAP (hazard ratio 2.73, 95% confidence interval (1.38, 5.38; P = 0.005)). There was a significant increase in the incidence of VAP in patients treated with a fever control protocol (26.1 versus 12.5 VAP cases per 1000 days of mechanical ventilation). In cases in which a fever control protocol was applied for >3 days, we observed a higher rate of VAP in comparison with the rate among patients treated for ≤3 days. Conclusions Fever control in brain-injured patients was a major risk factor for VAP occurrence, particularly when applied for >3 days.
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Affiliation(s)
- Yoann Launey
- CHU de Rennes. Hôpital Pontchaillou. Pôle Anesthésie-SAMU-Urgences-Réanimations. 2, rue Henri Le Guilloux, 35033, Rennes, Cedex, France. .,Inserm UMR991, équipe 2: "Stress, Defense and Regeneration". 2, rue Henri Le Guilloux, 35000, Rennes, France. .,Université Rennes 1, 35033, Rennes, Cedex, France.
| | - Nicolas Nesseler
- CHU de Rennes. Hôpital Pontchaillou. Pôle Anesthésie-SAMU-Urgences-Réanimations. 2, rue Henri Le Guilloux, 35033, Rennes, Cedex, France. .,Inserm UMR991, équipe 2: "Stress, Defense and Regeneration". 2, rue Henri Le Guilloux, 35000, Rennes, France. .,Université Rennes 1, 35033, Rennes, Cedex, France.
| | - Audren Le Cousin
- CHU de Rennes. Hôpital Pontchaillou. Pôle Anesthésie-SAMU-Urgences-Réanimations. 2, rue Henri Le Guilloux, 35033, Rennes, Cedex, France. .,Université Rennes 1, 35033, Rennes, Cedex, France.
| | - Fanny Feuillet
- Plateforme de Biométrie - Cellule de promotion à la recherche clinique, CHU Nantes, EA 4275 SPHERE "Biostatistics, Pharmacoepidemiology & Human Sciences Research", UFR de Pharmacie, Université de Nantes. 1, rue Gaston Veil, 44000, Nantes, France.
| | - Ronan Garlantezec
- Ecole Nationale Hautes Etudes de Santé Publique. 2, Avenue du Professeur Léon Bernard, 35033, Rennes, Cedex, France.
| | - Yannick Mallédant
- CHU de Rennes. Hôpital Pontchaillou. Pôle Anesthésie-SAMU-Urgences-Réanimations. 2, rue Henri Le Guilloux, 35033, Rennes, Cedex, France. .,Inserm UMR991, équipe 2: "Stress, Defense and Regeneration". 2, rue Henri Le Guilloux, 35000, Rennes, France. .,Université Rennes 1, 35033, Rennes, Cedex, France.
| | - Philippe Seguin
- CHU de Rennes. Hôpital Pontchaillou. Pôle Anesthésie-SAMU-Urgences-Réanimations. 2, rue Henri Le Guilloux, 35033, Rennes, Cedex, France. .,Inserm UMR991, équipe 2: "Stress, Defense and Regeneration". 2, rue Henri Le Guilloux, 35000, Rennes, France. .,Université Rennes 1, 35033, Rennes, Cedex, France.
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Meta-analysis of the efficacy and safety of therapeutic hypothermia in children with acute traumatic brain injury. World Neurosurg 2014; 83:567-73. [PMID: 25514616 DOI: 10.1016/j.wneu.2014.12.010] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2014] [Revised: 08/06/2014] [Accepted: 12/09/2014] [Indexed: 11/21/2022]
Abstract
OBJECTIVE To evaluate the efficacy and safety of therapeutic hypothermia in children with acute traumatic brain injury (TBI). METHODS A systematic literature review using PubMed, Embase, Cochrane Library, Chinese National Knowledge Infrastructure, Wanfang, VIP, and Chinese Biomedical Database was performed to retrieve studies of randomized controlled trials (RCTs) on therapeutic hypothermia for children with TBI published before March 2014. Data extraction and quality evaluation of RCTs were performed by 2 investigators independently. A meta-analysis was performed by RevMan 5.2.7. RESULTS There were 7 RCTs comprising 442 children (218 in hypothermia group and 224 in normothermia group). Meta-analysis showed therapeutic hypothermia could increase mortality compared with the normothermia group (relative risk [RR] = 1.84, 95% confidence interval [CI] = 1.15-2.93, P = 0.01). On the Glasgow Outcome Scale (GOS), the following scores did not differ between the hypothermia group and normothermia group: 3-month GOS 4-5 (RR = 0.89, 95% CI = 0.68-1.16, P = 0.39), 3-month GOS 1-3 (RR = 1.19, 95% CI = 0.80-1.76, P = 0.39), 6-month GOS 4-5 (RR = 0.91, 95% CI = 0.78-1.07, P = 0.26), and 6-month GOS 1-3 (RR = 1.18, 95% CI = 0.88-1.59, P = 0.27). Hypothermia did not increase the rate of pneumonia (RR = 0.84, 95% CI = 0.63-1.12, P = 0.23) or bleeding (RR = 0.94, 95% CI = 0.39-2.26, P = 0.89), but the incidence of arrhythmias was higher in the hypothermia group (RR = 2.60, 95% CI = 1.06-6.41, P = 0.04). CONCLUSIONS No benefit of therapeutic hypothermia in children with TBI is shown in this study; therapeutic hypothermia may increase the risk of mortality and arrhythmia. There is no evidence that therapeutic hypothermia improves prognosis of children with TBI; there is also no evidence that therapeutic hypothermia increases the risk of pneumonia and coagulation dysfunction. These results are limited by the quality of the included studies and need to be considered with caution. Further large-scale, well-designed RCTs on this topic are needed.
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Abstract
Apart from its complex functionality, the brain is a robust thermodynamic machine; the tissue metabolic rate is high and it is thermally shielded by a skull. Therefore, if there is no high-volume blood flow to cool and stabilize the brain temperature, the possibility of unstable behavior seems to be high. Inflowing arterial blood is normally cooler than the brain tissue temperature, and outflowing venous blood is normally warmer than arterial blood but cooler than the brain tissue. Brain blood flow can thus be understood as a cooler for the brain. Pros and cons of clinical measurement, with clear indication for a multimodal monitoring approach, are discussed along with a brief review of basic facts known about temperature, cerebral blood flow and volume, intracranial pressure, and compartmental compliances of the brain.
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Abstract
Neurotrauma continues to be a significant cause of morbidity and mortality. Prevention of primary neurologic injury is a critical public health concern. Early and thorough assessment of the patient with neurotrauma with high index of suspicion of traumatic spinal cord injuries and traumatic vascular injuries requires a multidisciplinary approach involving prehospital providers, emergency physicians, neurosurgeons, and neurointensivists. Critical care management of the patient with neurotrauma is focused on the prevention of secondary injuries. Much research is still needed for potential neuroprotection therapies.
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Affiliation(s)
- Wan-Tsu W Chang
- Department of Emergency Medicine, University of Maryland School of Medicine, 110 South Paca Street, 6th Floor, Suite 200, Baltimore, MD 21201, USA
| | - Neeraj Badjatia
- Department of Neurology, University of Maryland School of Medicine, 110 South Paca Street, 3rd Floor, 072, Baltimore, MD 21201, USA; Department of Anesthesiology, University of Maryland School of Medicine, Baltimore, MD, USA; Department of Neurosurgery, University of Maryland School of Medicine, Baltimore, MD, USA.
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Johnson JN, Cummock MD, Levi AD, Green BA, Wang MY. Moderate Hypothermia for Intradural Spinal Tumor Resection: A Cohort Comparison and Feasibility Study. Ther Hypothermia Temp Manag 2014; 4:137-44. [DOI: 10.1089/ther.2014.0006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Jeremiah N. Johnson
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida
| | - Matthew D. Cummock
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida
| | - Allan D. Levi
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida
| | - Barth A. Green
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida
| | - Michael Y. Wang
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida
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Affiliation(s)
- Faiz U Ahmad
- Emory University School of Medicine, Atlanta, GA, Grady Memorial Hospital, Atlanta, GA; and
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Orlowski P, McConnell FK, Payne S. A mathematical model of cellular metabolism during ischemic stroke and hypothermia. IEEE Trans Biomed Eng 2014; 61:484-90. [PMID: 24058013 DOI: 10.1109/tbme.2013.2282603] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Stroke is a major cause of death and disability worldwide. Therapeutic hypothermia is a potentially useful neuroprotective treatment. A mathematical model of brain metabolism during stroke is extended here to simulate the effect of hypothermia on cell survival. Temperature decreases were set to reduce chemical reaction rates and slow diffusion through ion channels according to the Q10 rule. Heat delivery to tissues was set to depend on metabolic heat generation rate and perfusion. Two cooling methods, scalp and vascular, were simulated to approximate temperature variation in the brain during treatment. Cell death was assumed to occur at continued cell membrane depolarization. Simulations showed that hypothermia to 34.5 °C induced within 1-1.5 h of stroke onset could extend cell survival time by at least 5 h in tissue with perfusion reduced by 80% of normal. There was good agreement between simulated metabolite dynamics and those reported in rat model studies.
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Idris Z, Zenian MS, Muzaimi M, Hamid WZWA. Better Glasgow outcome score, cerebral perfusion pressure and focal brain oxygenation in severely traumatized brain following direct regional brain hypothermia therapy: A prospective randomized study. Asian J Neurosurg 2014; 9:115-23. [PMID: 25685201 PMCID: PMC4323894 DOI: 10.4103/1793-5482.142690] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Induced hypothermia for treatment of traumatic brain injury is controversial. Since many pathways involved in the pathophysiology of secondary brain injury are temperature dependent, regional brain hypothermia is thought capable to mitigate those processes. The objectives of this study are to assess the therapeutic effects and complications of regional brain cooling in severe head injury with Glasgow coma scale (GCS) 6-7. MATERIALS AND METHODS A prospective randomized controlled pilot study involving patients with severe traumatic brain injury with GCS 6 and 7 who required decompressive craniectomy. Patients were randomized into two groups: Cooling and no cooling. For the cooling group, analysis was made by dividing the group into mild and deep cooling. Brain was cooled by irrigating the brain continuously with cold Hartmann solution for 24-48 h. Main outcome assessments were a dichotomized Glasgow outcome score (GOS) at 6 months posttrauma. RESULTS A total of 32 patients were recruited. The cooling-treated patients did better than no cooling. There were 63.2% of patients in cooling group attained good GOS at 6 months compared to only 15.4% in noncooling group (P = 0.007). Interestingly, the analysis at 6 months post-trauma disclosed mild-cooling-treated patients did better than no cooling (70% vs. 15.4% attained good GOS, P = 0.013) and apparently, the deep-cooling-treated patients failed to be better than either no cooling (P = 0.074) or mild cooling group (P = 0.650). CONCLUSION Data from this pilot study imply direct regional brain hypothermia appears safe, feasible and maybe beneficial in treating severely head-injured patients.
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Affiliation(s)
- Zamzuri Idris
- Center for Neuroscience Service and Research, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
- Department of Neurosciences, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
| | - Mohd Sofan Zenian
- Department of Neurosciences, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
| | - Mustapha Muzaimi
- Center for Neuroscience Service and Research, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
- Department of Neurosciences, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
| | - Wan Zuraida Wan Abdul Hamid
- Department of Immunology, School of Medical Sciences, Universiti Sains Malaysia, Kubang Kerian, Kelantan, Malaysia
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Thomas TP, Shih TM. Stimulation of central A1 adenosine receptors suppresses seizure and neuropathology in a soman nerve agent seizure rat model. Toxicol Mech Methods 2014; 24:385-95. [DOI: 10.3109/15376516.2014.920450] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Clinical Q & A: Translating therapeutic temperature management from theory to practice. Ther Hypothermia Temp Manag 2014; 3:100-6. [PMID: 24837802 DOI: 10.1089/ther.2013.1506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Abstracts from the 3rd innsbruck targeted temperature management symposium-a multidisciplinary conference september 21, 2013 vienna, austria. Ther Hypothermia Temp Manag 2014; 3:A1-A14. [PMID: 24834952 DOI: 10.1089/ther.2013.1517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Crossley S, Reid J, McLatchie R, Hayton J, Clark C, MacDougall M, Andrews PJD. A systematic review of therapeutic hypothermia for adult patients following traumatic brain injury. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2014; 18:R75. [PMID: 24742169 PMCID: PMC4056614 DOI: 10.1186/cc13835] [Citation(s) in RCA: 81] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2013] [Accepted: 04/03/2014] [Indexed: 12/16/2022]
Abstract
Introduction Research into therapeutic hypothermia following traumatic brain injury has been characterised by small trials of poor methodological quality, producing variable results. The Cochrane review, published in 2009, now requires updating. The aim of this systematic review is to assess the effectiveness of the application of therapeutic hypothermia to reduce death and disability when administered to adult patients who have been admitted to hospital following traumatic brain injury. Methods Two authors extracted data from each trial. Unless stated in the trial report, relative risks and 95% confidence intervals (CIs) were calculated for each trial. We considered P < 0 · 05 to be statistically significant. We combined data from all trials to estimate the pooled risk ratio (RR) with 95% confidence intervals for death, unfavourable outcome, and pneumonia. All statistical analyses were performed using RevMan 5.1 (Cochrane IMS, Oxford, UK) and Stata (Intercooled Version 12.0, StataCorp LP). Pooled RRs were calculated using the Mantel-Haenszel estimator. The random effects model of DerSimonian and Laird was used to estimate variances for the Mantel-Haenszel and inverse variance estimators. Results Twenty studies are included in the review, while 18 provided mortality data. When the results of 18 trials that evaluated mortality as one of the outcomes were statistically aggregated, therapeutic hypothermia was associated with a significant reduction in mortality and a significant reduction in poor outcome. There was a lack of statistical evidence for an association between use of therapeutic hypothermia and increased onset of new pneumonia. Conclusions In contrast to previous reviews, this systematic review found some evidence to suggest that therapeutic hypothermia may be of benefit in the treatment of traumatic brain injury. The majority of trials were of low quality, with unclear allocation concealment. Low quality trials may overestimate the effectiveness of hypothermia treatment versus standard care. There remains a need for more, high quality, randomised control trials of therapeutic hypothermia after traumatic brain injury. PROSPERO Systematic Review Registration Number 2012:
CRD42012002449.
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Chen CW, Puvanesarajah V, Lo SFL, Cheng TJ, Cheng CY, Lim M, Lin HJ. Selective cerebral hypothermia induced via hypothermic retrograde jugular vein saline flush in a porcine model. Neurol Res 2014; 36:897-902. [PMID: 24725291 DOI: 10.1179/1743132814y.0000000374] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
OBJECTIVES Multiple methods of selective brain cooling have been used to prevent cerebral ischemia secondary to trauma and pathological or iatrogenic cerebral blood flow restriction. In this study, we tested the efficacy of hypothermic retrograde jugular vein flush (HRJVF) in eliciting selective brain hypothermia in a porcine model. METHODS Twelve swine were divided into two groups: retrograde jugular vein infusion (RJVI) with cold saline (4°C RJVI, n = 6) and with room temperature saline (24°C RJVI, n = 6). For 90 minutes, the following parameters were measured: brain parenchymal temperature, rectal temperature, intracranial pressure (ICP), mean arterial pressure, and heart rate (HR). RESULTS Swine receiving 4°C RJVI experienced a drop in mean brain parenchymal temperature of 1·1 ± 0·1°C, compared to 0·1 ± 0·1°C in swine receiving 24°C RJVI. At 90 minutes, mean brain parenchymal temperature in the 4°C RJVI treatment group was 35·5 ± 0·2°C, as compared to 37·1 ± 0·2°C in the 24°C RJVI treatment group (P < 0·001). In the 4°C RJVI group, the brain-systemic temperature gradient peaked 10 minutes after initiation of cooling and remained significantly different when comparing the two experimental groups (P < 0·001) throughout the duration of the 90 minutes experiment. Of note, ICP, mean arterial pressure, and HR remained constant without any significant changes or differences between treatment groups. DISCUSSION These results suggest that HRJVF is an effective method for selective brain hypothermia in a large animal model. Clinical application may prove effective in delaying neural ischemia.
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Soleimanpour H, Rahmani F, Golzari SE, Safari S. Main complications of mild induced hypothermia after cardiac arrest: a review article. J Cardiovasc Thorac Res 2014; 6:1-8. [PMID: 24753824 PMCID: PMC3992725 DOI: 10.5681/jcvtr.2014.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2013] [Accepted: 01/20/2014] [Indexed: 11/22/2022] Open
Abstract
The aim of the present study is to assess the complications of mild induced hypothermia (MIH) in patients with cardiac arrest. Presently, based on the guidelines of the American heart Association, MIH following successful cardiopulmonary resuscitation (CPR) in unconscious adult patients due to ventricular fibrillation (VF) with out-of-hospital cardiac arrest (OOHCA) is essential and required. However, MIH could be associated with complications in Patients with cardiac arrest. Studies conducted on the precautions and care following cardiac arrest and MIH were included. Valid scientific data bases were used for data collection. The obtained results from different studies revealed that mild MIH could be associated with numerous complications and the knowledge and awareness of the medical staff from the complications is required to guarantee successful therapeutic approaches in MIH following cardiac arrest which is a novel medical facility with different styles and complications. Overall, further future studies are required to improve the quality of MIH, to increase survival and to decrease complications rates.
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Affiliation(s)
- Hassan Soleimanpour
- Cardiovascular Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Farzad Rahmani
- Emergency Medicine Department, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Samad Ej Golzari
- Liver and Gastrointestinal Disease Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Saeid Safari
- Anesthesiology and Critical Care Department, Iran University of Medical Sciences, Tehran, Iran
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Abstract
OBJECTIVE Observational studies suggest that infections are a common complication of therapeutic hypothermia. We performed a systematic review and meta-analysis of randomized trials to examine the risk of infections in patients treated with hypothermia. DATA SOURCES PubMed, Embase, and the Cochrane Central Register of Controlled Trials were systematically searched for eligible studies up to October 1, 2012. STUDY SELECTION We included randomized controlled clinical trials of therapeutic hypothermia induced in adults for any indication, which reported the prevalence of infection in each treatment group. DATA EXTRACTION For each study, we collected information about the baseline characteristics of patients, cooling strategy, and infections. DATA SYNTHESIS Twenty-three studies were identified, which included 2,820 patients, of whom 1,398 (49.6%) were randomized to hypothermia. Data from another 31 randomized trials, involving 4,004 patients, could not be included because the occurrence of infection was not reported with sufficient detail or not at all. The risk of bias in the included studies was high because information on the method of randomization and definitions of infections lacked in most cases, and assessment of infections was not blinded. In patients treated with hypothermia, the prevalence of all infections was not increased (rate ratio, 1.21 [95% CI, 0.95-1.54]), but there was an increased risk of pneumonia and sepsis (risk ratios, 1.44 [95% CI, 1.10-1.90]; 1.80 [95% CI, 1.04-3.10], respectively). CONCLUSION The available evidence, subject to its limitations, strongly suggests an association between therapeutic hypothermia and the risk of pneumonia and sepsis, whereas no increase in the overall risk of infection was observed. All future randomized trials of hypothermia should report on this important complication.
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Alharfi IM, Charyk Stewart T, Al Helali I, Daoud H, Fraser DD. Infection Rates, Fevers, and Associated Factors in Pediatric Severe Traumatic Brain Injury. J Neurotrauma 2014; 31:452-8. [DOI: 10.1089/neu.2013.2904] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Ibrahim M. Alharfi
- Department of Paediatrics, Western University, London, Ontario, Canada
- Department of Pediatric Critical Care, King Fahad Medical City, Riyadh, Saudi Arabia
| | - Tanya Charyk Stewart
- Department of Surgery, Western University, London, Ontario, Canada
- Trauma Program, London Health Sciences Center, London, Ontario, Canada
| | - Ibrahim Al Helali
- Department of Paediatrics, Western University, London, Ontario, Canada
| | - Hani Daoud
- Department of Paediatrics, Western University, London, Ontario, Canada
| | - Douglas D. Fraser
- Department of Paediatrics, Western University, London, Ontario, Canada
- Translational Research Centre, London, Ontario, Canada
- Children's Health Research Institute, London, Ontario, Canada
- Physiology and Pharmacology, Western University, London, Ontario, Canada
- Clinical Neurological Sciences, Western University, London, Ontario, Canada
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Miyauchi T, Wei EP, Povlishock JT. Evidence for the therapeutic efficacy of either mild hypothermia or oxygen radical scavengers after repetitive mild traumatic brain injury. J Neurotrauma 2014; 31:773-81. [PMID: 24341607 DOI: 10.1089/neu.2013.3181] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Repetitive brain injury, particularly that occurring with sporting-related injuries, has recently garnered increased attention in both the clinical and public settings. In the laboratory, we have demonstrated the adverse axonal and vascular consequences of repetitive brain injury and have demonstrated that moderate hypothermia and/or FK506 exerted protective effects after repetitive mild traumatic brain injury (mTBI) when administered within a specific time frame, suggesting a range of therapeutic modalities to prevent a dramatic exacerbation. In this communication, we revisit the utility of targeted therapeutic intervention to seek the minimal level of hypothermia needed to achieve protection while probing the role of oxygen radicals and their therapeutic targeting. Male Sprague-Dawley rats were subjected to repetitive mTBI by impact acceleration injury. Mild hypothermia (35 °C, group 2), superoxide dismutase (group 3), and Tempol (group 4) were employed as therapeutic interventions administered 1 h after the repetitive mTBI. To assess vascular function, cerebral vascular reactivity to acetylcholine was evaluated 3 and 4 h after the repetitive mTBI, whereas to detect the burden of axonal damage, amyloid precursor protein (APP) density in the medullospinal junction was measured. Whereas complete impairment of vascular reactivity was observed in group 1 (without intervention), significant preservation of vascular reactivity was found in the other groups. Similarly, whereas remarkable increase in the APP-positive axon was observed in group 1, there were no significant increases in the other groups. Collectively, these findings indicate that even mild hypothermia or the blunting free radical damage, even when performed in a delayed period, is protective in repetitive mTBI.
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Affiliation(s)
- Takashi Miyauchi
- 1 Department of Anatomy and Neurobiology, Virginia Commonwealth University Medical Center , Richmond, Virginia
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70
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Abstract
Neurotraumatology has its roots in ancient history, but its modern foundations are the physical examination, imaging to localize the pathology, and thoughtful medical and surgical decision making. The neurobiology of cranial and spinal injury is similar, with the main goal of therapies being to limit secondary injury. Brain injury treatment focuses on minimizing parenchymal swelling within the confined cranial vault. Spine injury treatment has the additional consideration of spinal coumn stability. Current guidelines for non-operative and operative management are reviewed in this chapter.
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Affiliation(s)
- Edward C Perry
- Department of Neurological Surgery, Loyola University Medical Center, Maywood, IL, USA
| | - Hazem M Ahmed
- Department of Neurological Surgery, Loyola University Medical Center, Maywood, IL, USA.
| | - Thomas C Origitano
- Department of Neurological Surgery, Loyola University Medical Center, Maywood, IL, USA
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71
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Abstract
In primary and secondary brain diseases, increasing volumes of the three compartments of brain tissue, cerebrospinal fluid, or blood lead to a critical increase in intracranial pressure (ICP). A rising ICP is associated with typical clinical symptoms; however, during analgosedation it can only be detected by invasive ICP monitoring. Other neuromonitoring procedures are not as effective as ICP monitoring; they reflect the ICP changes and their complications by other metabolic and oxygenation parameters. The most relevant parameter for brain perfusion is cerebral perfusion pressure (CPP), which is calculated as the difference between the middle arterial pressure (MAP) and the ICP. A mixed body of evidence exists for the different ICP-reducing treatment measures, such as hyperventilation, hyperosmolar substances, hypothermia, glucocorticosteroids, CSF drainage, and decompressive surgery.
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72
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Andrews PJD, Sinclair LH, Harris B, Baldwin MJ, Battison CG, Rhodes JKJ, Murray G, De Backer D. Study of therapeutic hypothermia (32 to 35°C) for intracranial pressure reduction after traumatic brain injury (the Eurotherm3235Trial): outcome of the pilot phase of the trial. Trials 2013; 14:277. [PMID: 24004918 PMCID: PMC3766230 DOI: 10.1186/1745-6215-14-277] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Accepted: 08/22/2013] [Indexed: 12/14/2022] Open
Abstract
Background Clinical trials in traumatic brain injury (TBI) are challenging. Previous trials of complex interventions were conducted in high-income countries, reported long lead times for site setup and low screened-to-recruitment rates. In this report we evaluate the internal pilot phase of an international, multicentre TBI trial of a complex intervention to assess: design and implementation of an online case report form; feasibility of recruitment (sites and patients); feasibility and effectiveness of delivery of the protocol. Methods All aspects of the pilot phase of the trial were conducted as for the main trial. The pilot phase had oversight by independent Steering and Data Monitoring committees. Results Forty sites across 12 countries gained ethical approval. Thirty seven of 40 sites were initiated for recruitment. Of these, 29 had screened patients and 21 randomized at least one patient. Lead times to ethics approval (6.8 weeks), hospital approval (18 weeks), interest to set up (61 weeks), set up to screening (11 weeks), and set up to randomization (31.6 weeks) are comparable with other international trials. Sixteen per cent of screened patients were eligible. We found 88% compliance rate with trial protocol. Conclusion The pilot data demonstrated good feasibility for this large international multicentre randomized controlled trial of hypothermia to control intracranial pressure. The sample size was reduced to 600 patients because of homogeneity of the patient group and we showed an optimized cooling intervention could be delivered. Trial registration Current Controlled Trials: ISRCTN34555414.
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Affiliation(s)
- Peter J D Andrews
- Department of Anaesthesia and Pain Management, University of Edinburgh, Edinburgh, UK.
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73
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Rubiano AM, Sanchez AI, Estebanez G, Peitzman A, Sperry J, Puyana JC. The effect of admission spontaneous hypothermia on patients with severe traumatic brain injury. Injury 2013; 44:1219-25. [PMID: 23273319 PMCID: PMC3644529 DOI: 10.1016/j.injury.2012.11.026] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2012] [Revised: 11/09/2012] [Accepted: 11/25/2012] [Indexed: 02/02/2023]
Abstract
INTRODUCTION Recent information has emerged regarding the harmful effects of spontaneous hypothermia at time of admission in trauma patients. However the volume of evidence regarding the role of spontaneous hypothermia in TBI patients is inadequate. METHODS We performed secondary data analysis of 10 years of the Pennsylvania trauma outcome study (PTOS) database. Unadjusted comparisons of the association of admission spontaneous hypothermia with mortality were performed. In addition, full assessment of the association of hypothermia with mortality was conducted using multivariable logistic regressions reporting the odds ratios (OR) with the 95% confidence intervals (CI) and P-values. RESULTS There were 11,033 patients identified from the PTOS with severe TBI. There were 4839 deaths (43.9%). The proportion of deaths in hypothermic patients was higher than the proportion of deaths in normothermic patients (53.9% vs. 37.4% respectively; P value<0.001). In a multivariable logistic regression model adjusted for demographics, injury characteristics, and information at admission to the trauma centre, the odds of death among patients with hypothermia were 1.70 times the odds of death among patients with normothermia (OR 1.70, 95% CI 1.50-1.93), indicating that the probability of death was significantly higher when patients arrived hypothermic at the trauma centre. CONCLUSION The presence of spontaneous hypothermia at hospital admission is associated with a significant increase in the risk of mortality in patients with severe TBI. The benefit of maintaining normothermia in severe TBI patients, the impact of prolonged re-warming in patients with established hypothermia and the introduction of prophylactic measures to complications of hypothermia are key points that require further investigation.
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Affiliation(s)
- Andrés M. Rubiano
- Neurosurgeon and Critical Care Physician, Chief of Trauma and Emergency Service, Neiva University Hospital, Professor of Neurosciences, South Colombia University, Colombia, , Fax: +5788723885, Tel: +573006154775
| | - Alvaro I Sanchez
- Epidemiologist and Trauma Research Fellow, Division of Trauma, University of Pittsburgh Medical Centre, Pittsburgh, Pennsylvania, United States of America,
| | - Glyn Estebanez
- Core Surgical Trainee, Department of Surgery, Whiston Hospital, United Kingdom,
| | - Andrew Peitzman
- Trauma Surgeon, Division of General Surgery, University of Pittsburgh Medical Centre, Pittsburgh, Pennsylvania, United States of America,
| | - Jason Sperry
- Trauma Surgeon, Division of General Surgery, University of Pittsburgh Medical Centre, Pittsburgh, Pennsylvania, United States of America,
| | - Juan Carlos Puyana
- Trauma Surgeon, Division of General Surgery, University of Pittsburgh Medical Centre, Pittsburgh, Pennsylvania, United States of America,
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Mak CHK, Lu YY, Wong GKC. Review and recommendations on management of refractory raised intracranial pressure in aneurysmal subarachnoid hemorrhage. Vasc Health Risk Manag 2013; 9:353-9. [PMID: 23874101 PMCID: PMC3714000 DOI: 10.2147/vhrm.s34046] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Intracranial hypertension is commonly encountered in poor-grade aneurysmal subarachnoid hemorrhage patients. Refractory raised intracranial pressure is associated with poor prognosis. The management of raised intracranial pressure is commonly referenced to experiences in traumatic brain injury. However, pathophysiologically, aneurysmal subarachnoid hemorrhage is different from traumatic brain injury. Currently, there is a paucity of consensus on the management of refractory raised intracranial pressure in spontaneous subarachnoid hemorrhage. We discuss in this paper the role of hyperosmolar agents, hypothermia, barbiturates, and decompressive craniectomy in managing raised intracranial pressure refractory to first-line treatment, in which preliminary data supported the use of hypertonic saline and secondary decompressive craniectomy. Future clinical trials should be carried out to delineate better their roles in management of raised intracranial pressure in aneurysmal subarachnoid hemorrhage patients.
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Abstract
Traumatic brain injury (TBI) is a major public health problem and the leading cause of death and disability worldwide. Despite the modern diagnosis and treatment, the prognosis for patients with TBI remains poor. While severity of primary injury is the major factor determining the outcomes, the secondary injury caused by physiological insults such as hypotension, hypoxemia, hypercarbia, hypocarbia, hyperglycemia and hypoglycemia, etc. that develop over time after the onset of the initial injury, causes further damage to brain tissue, worsening the outcome in TBI. Perioperative period may be particularly important in the course of TBI management. While surgery and anesthesia may predispose the patients to new onset secondary injuries which may contribute adversely to outcomes, the perioperative period is also an opportunity to detect and correct the undiagnosed pre-existing secondary insults, to prevent against new secondary insults and is a potential window to initiate interventions that may improve outcome of TBI. For this review, extensive Pubmed and Medline search on various aspects of perioperative management of TBI was performed, followed by review of research focusing on intraoperative and perioperative period. While the research focusing specifically on the intraoperative and immediate perioperative TBI management is limited, clinical management continues to be based largely on physiological optimization and recommendations of Brain Trauma Foundation guidelines. This review is focused on the perioperative management of TBI, with particular emphasis on recent developments.
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Affiliation(s)
- Parichat Curry
- Department of Anesthesiology and Pain Medicine, University of Washington, Seattle, WA, USA
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76
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Gibson A, Andrews PJD. Therapeutic hypothermia, still "too cool to be true?". F1000PRIME REPORTS 2013; 5:26. [PMID: 23878730 PMCID: PMC3702220 DOI: 10.12703/p5-26] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Therapeutic hypothermia, an intervention reducing core body temperature below 35 degrees Celsius, has gained popularity in the management of acute brain injury after a series of small clinical trials in patients following cardiac arrest, stroke and traumatic brain injury. This article reviews the evidence relating to therapeutic hypothermia as an intervention in acute injury.
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Affiliation(s)
- Alistair Gibson
- Department of Anaesthesia & Critical Care, University of Edinburgh & NHS LothianWestern General Hospital, EdinburghUnited Kingdom, EH12 6ER
| | - Peter J. D. Andrews
- Centre for Clinical Brain Sciences, University of Edinburgh & NHS LothianWestern General Hospital, EdinburghUnited Kingdom, EH12 6ER
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77
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Algattas H, Huang JH. Neurotrauma and Repair Research: Traumatic Brain Injury (TBI) and its Treatments. Biomed Eng Comput Biol 2013; 5:51-6. [PMID: 25288902 PMCID: PMC4147763 DOI: 10.4137/becb.s10968] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Traumatic brain injury (TBI) affects a growing portion of the population and continues to take national spotlight with advances in imaging technology and understanding of long-term effects. However, there is large variance in TBI treatment protocols due to injury variability and lack of both mechanistic understanding and strong treatment recommendations. Recent practice suggests three disparate treatment approaches, all which aim at promoting neuroprotection after TBI, show promise: immediate hypothermia, hyperbaric oxygen, and progesterone supplementation. The research is controversial at times, yet there are abundant opportunities to develop the technology behind hypothermia and hyperbaric oxygen treatments which would surely aid in aligning the current data. Additionally, while progesterone has already been packaged in nanoparticle form it may benefit from continued formulation and administration research. The treatments and the avenues for improvement are reviewed in the present paper.
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Affiliation(s)
- Hanna Algattas
- University of Rochester Medical Center, Department of Neurosurgery, Rochester, NY, USA
| | - Jason H Huang
- University of Rochester Medical Center, Department of Neurosurgery, Rochester, NY, USA
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78
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Ma C, He X, Wang L, Wang B, Li Q, Jiang F, Ma J. Is therapeutic hypothermia beneficial for pediatric patients with traumatic brain injury? A meta-analysis. Childs Nerv Syst 2013; 29:979-84. [PMID: 23503613 DOI: 10.1007/s00381-013-2076-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2013] [Accepted: 03/05/2013] [Indexed: 12/20/2022]
Abstract
PURPOSE Hypothermia therapy shows its unique potential for reducing mortality in animal study and improving neurologic outcome in patients with traumatic brain injury. However, therapeutic hypothermia for pediatric traumatic brain injury remains a controversial issue. To determine the effectiveness and safety of hypothermia treatment for pediatric traumatic brain injury patients, we conducted this meta-analysis. PATIENTS AND METHODS We analyzed the data from MEDLINE, Pubmed, EMBASE, and Cochrane Library by electronic searching. No limitation of language was selected for analysis. We extracted the mortality and adverse events from the published trials. RESULTS Six clinical trials and 366 pediatric patients met our inclusion criteria. Pediatric patients with traumatic brain injury treated with hypothermia had more unfavorable outcome than those in the normothermia group (RR 1.73, 95 % CI 1.06 to 2.84), and this increased risk is statistically significant. Patients with therapeutic hypothermia are slightly likely to be induced by cardiac arrhythmia, and the likelihood is also significant (RR 2.57, 95 % CI 1.01 to 6.54). Risk of pneumonia has no statistical difference between normothermia and hypothermia arms (RR 0.90, 95 % CI 0.73 to 1.12). Two of the included trials have reported their detail randomization assignment. CONCLUSIONS Hypothermia may slightly increase the risk of mortality in children with traumatic brain injury and the ratio of cardiac arrhythmia after this hypothermia therapy is slightly higher than that in normothermia groups. In the future, more randomized controlled trials and multicenter studies on the mechanism of therapeutic hypothermia are required.
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Affiliation(s)
- Chenkai Ma
- Department of Pediatric Neurosurgery, Shanghai Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, 1665 Kongjiang Road, Shanghai, China
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79
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Lei J, Gao G, Jiang J. Acute traumatic brain injury: is current management evidence based? An empirical analysis of systematic reviews. J Neurotrauma 2013; 30:529-37. [PMID: 23151044 DOI: 10.1089/neu.2012.2548] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Traumatic brain injury (TBI) is a major health and socioeconomic problem worldwide with a high rate of death and long-term disability. Previous studies have summarized evidence from large-scale randomized trials, finding no intervention showing convincing efficacy for acute TBI management. The present empirical study set out to assess another crucial component of evidence base-systematic review, which contributes a lot to evidence-based health care, in terms of clinical issues, methodological aspects, and implication for practice and research. A total of 44 systematic reviews pertaining to therapeutic interventions for acute TBI were identified through electronic database searching, clinical guideline retrieval, and expert consultation, of which 21 were published in Cochrane Library and 23 in peer-reviewed journals. Their methodological quality was generally satisfactory, with the median Overview Quality Assessment Questionnaire score of 5.5 (interquartile range 2-7). Cochrane reviews are of better quality than regular journal reviews. Twenty-nine high-quality reviews provided no conclusive evidence for the investigated 22 interventions except for an adverse effect of corticosteroids. Less than one-third of the component trials were reported with adequate allocation concealment. Additionally other methodological flaws in design-for example, ignoring heterogeneity among the TBI population-also contributed to the failure of past clinical research. Based on the above findings, evidence from both systematic reviews and clinical trials does not fully support current management of acute TBI. Translating from laboratory success to clinical effect remains an unique challenge. Accordingly it may be the time to rethink the way in future practice and clinical research in TBI.
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Affiliation(s)
- Jin Lei
- Department of Neurosurgery, Renji Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
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80
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Dietrich W, Erbguth F. [Increased intracranial pressure and brain edema]. Med Klin Intensivmed Notfmed 2013; 108:157-69; quiz 170-1. [PMID: 23503630 DOI: 10.1007/s00063-013-0232-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2013] [Indexed: 01/12/2023]
Abstract
In primary and secondary brain diseases, increasing volumes of the three compartments of brain tissue, cerebrospinal fluid, or blood lead to a critical increase in intracranial pressure (ICP). A rising ICP is associated with typical clinical symptoms; however, during analgosedation it can only be detected by invasive ICP monitoring. Other neuromonitoring procedures are not as effective as ICP monitoring; they reflect the ICP changes and their complications by other metabolic and oxygenation parameters. The most relevant parameter for brain perfusion is cerebral perfusion pressure (CPP), which is calculated as the difference between the middle arterial pressure (MAP) and the ICP. A mixed body of evidence exists for the different ICP-reducing treatment measures, such as hyperventilation, hyperosmolar substances, hypothermia, glucocorticosteroids, CSF drainage, and decompressive surgery.
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Affiliation(s)
- W Dietrich
- Klinik für Neurologie, Klinikum Nürnberg
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81
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Georgiou A, Manara A. Role of therapeutic hypothermia in improving outcome after traumatic brain injury: a systematic review. Br J Anaesth 2013; 110:357-67. [DOI: 10.1093/bja/aes500] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
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82
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Prehospital management of severe traumatic brain injury: concepts and ongoing controversies. Curr Opin Anaesthesiol 2013; 25:556-62. [PMID: 22821147 DOI: 10.1097/aco.0b013e328357225c] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
PURPOSE OF REVIEW Prehospital management affects long-term outcome of patients with severe traumatic brain injury (TBI). This article reviews the current concepts and ongoing controversies of prehospital treatment of severe TBI. RECENT FINDINGS Prehospital management focuses on the prevention of secondary brain injury and rapid transport to a neurotrauma center for definitive diagnosis and life- as well as brain-saving emergency treatment such as decompressive craniotomy. There is a broad consensus that adequate airway management, prevention of hypoxia, hypocapnia or hypercapnia, prevention of hypotension and control of hemorrhage represent preclinical therapeutic modalities that may contribute to improved survival in severe TBI. The precise role of prehospital endotracheal intubation, osmotic agents and early therapeutic hypothermia needs to be clarified in the context of time required for transportation, local infrastructure, geographical factors and availability of experienced emergency teams. SUMMARY Prehospital management of TBI remains challenging. There are no universal objectives suitable to all patients. Randomized, controlled clinical trials are necessary for developing optimal protocols for paramedic and physician emergency medical teams.
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83
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Ahmad FU, Wang MY, Levi AD. Hypothermia for acute spinal cord injury--a review. World Neurosurg 2013; 82:207-14. [PMID: 23298671 DOI: 10.1016/j.wneu.2013.01.008] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2012] [Revised: 10/26/2012] [Accepted: 01/03/2013] [Indexed: 11/16/2022]
Abstract
OBJECTIVE Spinal cord injury (SCI) is a catastrophic neurological event with no proven treatments that protect against its consequences. Potential benefits of hypothermia in preventing/limiting central nervous system injury are now well known. There has been an interest in its potential use after SCI. This article reviews the current experimental and clinical evidence on the use of therapeutic hypothermia in patients with SCI. METHODS Review of literature. RESULTS There are various mechanisms by which hypothermia is known to protect the central nervous system. Modest hypothermia (32°C-34°C) can deliver the potential benefits of hypothermia without incurring the complications associated with deep hypothermia. Several recent experimental studies have repeatedly shown that the use of hypothermia provides the benefit of neuroprotection after SCI. Although older clinical studies were often focused on local cooling strategies and demonstrated mixed results, more recent data from systemic hypothermia use demonstrate its safety and its benefits. Endovascular cooling is a safe and reliable method of inducing hypothermia. CONCLUSIONS There is robust experimental and some clinical evidence that hypothermia is beneficial in acute SCI. Larger, multicenter trials should be initiated to further study the usefulness of systemic hypothermia in SCI.
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Affiliation(s)
- Faiz U Ahmad
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Michael Y Wang
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Allan D Levi
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida, USA.
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84
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Sappenfield JW, Hong CM, Galvagno SM. Perioperative temperature measurement and management: moving beyond the Surgical Care Improvement Project. ACTA ACUST UNITED AC 2013. [DOI: 10.7243/2049-9752-2-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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85
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AKUTSU N, AIHARA H, SAKURAI A, KUSAKA J, YASUDA M, KOHMURA E. New Technique of Decompressive Skinplasty With Artificial Dermis for Severe Brain Swelling. Neurol Med Chir (Tokyo) 2013; 53:56-60. [DOI: 10.2176/nmc.53.56] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Nobuyuki AKUTSU
- Department of Neurosurgery, Hyogo Prefectural Kakogawa Medical Center
| | - Hideo AIHARA
- Department of Neurosurgery, Hyogo Prefectural Kakogawa Medical Center
| | - Atsushi SAKURAI
- Department of Plastic Surgery, Hyogo Prefectural Kakogawa Medical Center
| | - Junko KUSAKA
- Department of Plastic Surgery, Hyogo Prefectural Kakogawa Medical Center
| | - Michinori YASUDA
- Department of Plastic Surgery, Hyogo Prefectural Kakogawa Medical Center
| | - Eiji KOHMURA
- Department of Neurosurgery, Kobe University Graduate School of Medicine
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86
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Lim CM. Rebound Inflammation Associated with Rewarming from Hypothermia in an Endotoxin-Injured Lung. Korean J Crit Care Med 2013. [DOI: 10.4266/kjccm.2013.28.2.80] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Affiliation(s)
- Chae-Man Lim
- Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
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87
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Brain temperature: physiology and pathophysiology after brain injury. Anesthesiol Res Pract 2012; 2012:989487. [PMID: 23326261 PMCID: PMC3541556 DOI: 10.1155/2012/989487] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2012] [Revised: 11/09/2012] [Accepted: 12/12/2012] [Indexed: 12/02/2022] Open
Abstract
The regulation of brain temperature is largely dependent on the metabolic activity of brain tissue and remains complex. In intensive care clinical practice, the continuous monitoring of core temperature in patients with brain injury is currently highly recommended. After major brain injury, brain temperature is often higher than and can vary independently of systemic temperature. It has been shown that in cases of brain injury, the brain is extremely sensitive and vulnerable to small variations in temperature. The prevention of fever has been proposed as a therapeutic tool to limit neuronal injury. However, temperature control after traumatic brain injury, subarachnoid hemorrhage, or stroke can be challenging. Furthermore, fever may also have beneficial effects, especially in cases involving infections. While therapeutic hypothermia has shown beneficial effects in animal models, its use is still debated in clinical practice. This paper aims to describe the physiology and pathophysiology of changes in brain temperature after brain injury and to study the effects of controlling brain temperature after such injury.
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88
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D'Ambrosio R, Eastman CL, Darvas F, Fender JS, Verley DR, Farin FM, Wilkerson HW, Temkin NR, Miller JW, Ojemann J, Rothman SM, Smyth MD. Mild passive focal cooling prevents epileptic seizures after head injury in rats. Ann Neurol 2012; 73:199-209. [PMID: 23225633 DOI: 10.1002/ana.23764] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2012] [Revised: 09/10/2012] [Accepted: 09/14/2012] [Indexed: 02/03/2023]
Abstract
OBJECTIVE Post-traumatic epilepsy is prevalent, often difficult to manage, and currently cannot be prevented. Although cooling is broadly neuroprotective, cooling-induced prevention of chronic spontaneous recurrent seizures has never been demonstrated. We examined the effect of mild passive focal cooling of the perilesional neocortex on the development of neocortical epileptic seizures after head injury in the rat. METHODS Rostral parasagittal fluid percussion injury in rats reliably induces a perilesional, neocortical epileptic focus within weeks after injury. Epileptic seizures were assessed by 5-electrode video-electrocorticography (ECoG) 2 to 16 weeks postinjury. Focal cooling was induced with ECoG headsets engineered for calibrated passive heat dissipation. Pathophysiology was assessed by glial fibrillary acidic protein immunostaining, cortical sclerosis, gene expression of inflammatory cytokines interleukin (IL)-1α and IL-1β, and ECoG spectral analysis. All animals were formally randomized to treatment groups, and data were analyzed blind. RESULTS Cooling by 0.5 to 2°C inhibited the onset of epileptic seizures in a dose-dependent fashion. The treatment induced no additional pathology or inflammation, and normalized the power spectrum of stage N2 sleep. Cooling by 2°C for 5.5 weeks beginning 3 days after injury virtually abolished ictal activity. This effect persisted through the end of the study, >10 weeks after cessation of cooling. Rare remaining seizures were shorter than in controls. INTERPRETATION These findings demonstrate potent and persistent prevention and modification of epileptic seizures after head injury with a cooling protocol that is neuroprotective, compatible with the care of head injury patients, and conveniently implemented. The required cooling can be delivered passively without Peltier cells or electrical power.
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Affiliation(s)
- Raimondo D'Ambrosio
- Department of Neurological Surgery, University of Washington, Seattle, WA, USA.
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Abstract
Just as advancing technology has furthered our understanding of how the nervous system recovers, technology also enables the development of novel approaches to treatment. Because nervous system disease and injury often lead to severely impaired function, patients and families are willing to try anything, so therapies are often adopted with little evidence that they actually work. Evidence shows that comprehensive rehabilitation programs produce better outcomes, but it is still not understood what components of these multifaceted programs are critical to their success. Functional neuroimaging and other modalities now allow monitoring of neurophysiologic changes that can be paired with assessments detailing clinical changes, furthering our understanding of the factors that influence the recovery process. This article discusses several novel and emerging therapies in neurorehabilitation as well as recent multistudy reviews of selected treatments.
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90
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Oda T, Shimizu K, Yamaguchi A, Satoh K, Matsumoto KI. Hypothermia produces rat liver proteomic changes as in hibernating mammals but decreases endoplasmic reticulum chaperones. Cryobiology 2012; 65:104-12. [DOI: 10.1016/j.cryobiol.2012.05.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2011] [Revised: 04/24/2012] [Accepted: 05/10/2012] [Indexed: 12/25/2022]
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91
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Controversies in the management of adults with severe traumatic brain injury. AACN Adv Crit Care 2012; 23:188-203. [PMID: 22543492 DOI: 10.1097/nci.0b013e31824db4f3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Despite progress in the management of adults with severe traumatic brain injury, several controversies persist. Among the unresolved issues of greatest concern to neurocritical care clinicians and scientists are the following: (1) the best use of technological advances and the data obtained from multimodality monitoring; (2) the use of mannitol and hypertonic saline in the management of increased intracranial pressure; (3) the use of decompressive craniectomy and barbiturate coma in refractory increased intracranial pressure; (4) therapeutic hypothermia as a neuroprotectant; (5) anemia and the role of blood transfusion; and (6) venous thromboembolism prophylaxis in severe traumatic brain injury. Each of these strategies for managing severe traumatic brain injury, including the postulated mechanism(s) of action and beneficial effects of each intervention, adverse effects, the state of the science, and critical care nursing implications, is discussed.
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92
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Affiliation(s)
- L A Urbano
- Department of Critical Care Medicine, Lausanne University Hospital and Faculty of Biology and Medicine, Centre Hospitalier Universitaire Vaudois (CHUV), Rue du Bugnon 46, CH-1011 Lausanne, Switzerland.
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93
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Bhalla T, Dewhirst E, Sawardekar A, Dairo O, Tobias JD. Perioperative management of the pediatric patient with traumatic brain injury. Paediatr Anaesth 2012; 22:627-40. [PMID: 22502728 DOI: 10.1111/j.1460-9592.2012.03842.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
TBI and its sequelae remain a major healthcare issue throughout the world. With an improved understanding of the pathophysiology of TBI, refinements of monitoring technology, and ongoing research to determine optimal care, the prognosis of TBI continues to improve. In 2003, the Society of Critical Care Medicine published guidelines for the acute management of severe TBI in infants, children, and adolescents. As pediatric anesthesiologists are frequently involved in the perioperative management of such patients including their stabilization in the emergency department, familiarity with these guidelines is necessary to limit preventable secondary damage related to physiologic disturbances. This manuscript reviews the current evidence-based medicine regarding the care of pediatric patients with TBI as it relates to the perioperative care of such patients. The issues reviewed include those related to initial stabilization, airway management, intra-operative mechanical ventilation, hemodynamic support, administration of blood and blood products, positioning, and choice of anesthetic technique. The literature is reviewed regarding fluid management, glucose control, hyperosmolar therapy, therapeutic hypothermia, and corticosteroids. Whenever possible, management recommendations are provided.
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Affiliation(s)
- Tarun Bhalla
- Departments of Anesthesiology, Nationwide Children's Hospital and the Ohio State University, Columbus, OH, USA
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94
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Abstract
This article presents an overview of the management of traumatic brain injury (TBI) as relevant to the practicing anesthesiologist. Key concepts surrounding the pathophysiology and anesthetic principles are used to describe potential ways to reduce secondary insults and improve outcomes after TBI.
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95
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Alam HB. Translational barriers and opportunities for emergency preservation and resuscitation in severe injuries. Br J Surg 2012; 99 Suppl 1:29-39. [PMID: 22441853 DOI: 10.1002/bjs.7756] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Hypothermia is commonly used for organ and tissue preservation in multiple clinical settings, but its role in the management of injured patients remains controversial. There is no doubt that temperature modulation is a powerful tool, and hypothermia has been shown to protect cells during ischaemia and reperfusion, decrease organ damage and improve survival. Yet hypothermia is a double-edged sword: unless carefully managed, its induction can be associated with a number of complications. METHODS A literature review was performed to include important papers that address the impact of hypothermia on key biological processes, and explore the potential therapeutic role of hypothermia in trauma/haemorrhage models. RESULTS No clinical studies have been conducted to test the therapeutic benefits of hypothermia in injured patients. However, numerous well designed animal studies support this concept. Despite excellent preclinical data, there are several potential barriers to translating hypothermia into clinical practice. CONCLUSION Therapeutic hypothermia is a promising life-saving strategy. Appropriate patient selection requires a thorough understanding of how temperature modulation affects various biological mechanisms.
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Affiliation(s)
- H B Alam
- Harvard Medical School, Division of Trauma, Emergency Surgery and Surgical Critical Care, Massachusetts General Hospital, 165 Cambridge Street, Suite 810, Boston, Massachusetts 02114, USA.
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97
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Induced hypothermia is protective in a rat model of pneumococcal pneumonia associated with increased adenosine triphosphate availability and turnover*. Crit Care Med 2012; 40:919-26. [PMID: 22036856 DOI: 10.1097/ccm.0b013e3182373174] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To determine the effect of induced hypothermia on bacterial growth, lung injury, and mitochondrial function in a rat model of pneumococcal pneumosepsis. DESIGN Animal study. SETTING University research laboratory. SUBJECTS Male Sprague-Dawley rats. INTERVENTIONS Subjects were inoculated intratracheally with Streptococcus pneumoniae and controls received saline. After the development of pneumonia, mechanical ventilation was started with or without induced mild hypothermia (32 °C). Bacterial growth and inflammatory markers were determined in bronchoalveolar lavage fluid, blood, and organs. Oxidative phosphorylation and adenosine triphosphate contents were measured in mitochondria isolated from the liver and soleus muscle. MEASUREMENTS AND MAIN RESULTS Inoculation with S. pneumoniae resulted in severe pneumonia with bacterial dissemination, distal organ injury, and blunted peripheral oxygen consumption on mechanical ventilation. Hypothermia did not affect bacterial growth in bronchoalveolar lavage fluid and in homogenized lungs compared with normothermic controls but was associated with reduced bacterial dissemination to the spleen with a trend toward reduced bacterial load in blood and liver. Hypothermia reduced lung injury, exemplified by reductions in pulmonary cell influx and bronchoalveolar lavage fluid protein levels compared with controls. Hypothermia reduced bronchoalveolar lavage fluid levels of interleukin-1β, tended to reduce bronchoalveolar lavage fluid CINC-3 levels, but no effect was observed on bronchoalveolar lavage fluid tumor necrosis factor-α and interleukin-6 levels. Induced hypothermia restored the fall in oxygen consumption and adenosine triphosphate levels in the liver, whereas adenosine triphosphate/adenosine diphosphate ratios remained low. In muscle, induced hypothermia also reversed low oxygen consumption as a result of pneumonia, but with an increase in adenosine triphosphate levels, whereas adenosine triphosphate/adenosine diphosphate ratios were low. CONCLUSION Hypothermia did not adversely affect bacterial growth, but rather reduced bacterial dissemination in a rat model of pneumococcal pneumosepsis. Furthermore, hypothermia reduced lung injury associated with restored adenosine triphosphate availability and turnover. These findings suggest that hypothermia may reduce organ injury by preventing sepsis-related mitochondrial dysfunction.
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98
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Susantitaphong P, Alfayez M, Bucay AC, Balk EM, Jaber BL. Therapeutic hypothermia and prevention of acute kidney injury: a meta-analysis of randomized controlled trials. Resuscitation 2012; 83:159-67. [PMID: 21983123 PMCID: PMC3273643 DOI: 10.1016/j.resuscitation.2011.09.023] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2011] [Revised: 09/09/2011] [Accepted: 09/24/2011] [Indexed: 01/28/2023]
Abstract
BACKGROUND Therapeutic hypothermia has been shown to reduce neurological morbidity and mortality in the setting of out-of-hospital cardiac arrest and may be beneficial following brain injury and cardiopulmonary bypass. We conducted a systematic review to ascertain the effect of therapeutic hypothermia on development of acute kidney injury (AKI) and mortality. METHODS We searched for randomized controlled trials in MEDLINE through February 2011. We included trials comparing hypothermia to normothermia that reported kidney-related outcomes including, development of AKI, dialysis requirement, changes in serum creatinine, and mortality. We performed Peto fixed-effect and random-effects model meta-analyses, and meta-regressions. RESULTS Nineteen trials reporting on 2218 patients were included; in the normothermia group, the weighted rate of AKI was 4.2%, dialysis requirement 3.7%, and mortality 10.8%. By meta-analysis, hypothermia was not associated with a lower odds of AKI (odds ratio [OR] 1.01, 95% confidence interval [CI] 0.68, 1.51; P=0.95) or dialysis requirement (OR 0.81; 95% CI 0.30, 2.19; P=0.68); however, by meta-regression, a lower target cooling temperature was associated with a lower odds of AKI (P=0.01). Hypothermia was associated with lower mortality (OR 0.69; 95% CI 0.51, 0.92; P=0.01). CONCLUSIONS In trials that ascertained kidney endpoints, therapeutic hypothermia prevented neither the development of AKI nor dialysis requirement, but was associated with lower mortality. Different definitions and rates of AKI, differences in mortality rates, and concerns about the optimal target cooling temperature preclude definitive conclusions.
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Affiliation(s)
- Paweena Susantitaphong
- Division of Nephrology, Department of Medicine, St. Elizabeth's Medical Center, Tufts University School of Medicine, Boston, Massachusetts, USA
- Extracorporeal Multiorgan Support Dialysis Center, Division of Nephrology, Department of Medicine, Faculty of Medicine, King Chulalongkorn Memorial Hospital, Chulalongkorn University, Bangkok, Thailand
| | - Mansour Alfayez
- Division of Nephrology, Department of Medicine, St. Elizabeth's Medical Center, Tufts University School of Medicine, Boston, Massachusetts, USA
| | - Abraham Cohen Bucay
- Division of Nephrology, Department of Medicine, St. Elizabeth's Medical Center, Tufts University School of Medicine, Boston, Massachusetts, USA
| | - Ethan M. Balk
- Center for Clinical Evidence Synthesis, Tufts Clinical and Translational Science Institute, Tufts University, Boston, Massachusetts, USA
| | - Bertrand L. Jaber
- Division of Nephrology, Department of Medicine, St. Elizabeth's Medical Center, Tufts University School of Medicine, Boston, Massachusetts, USA
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99
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Laupland KB, Zahar JR, Adrie C, Minet C, Vésin A, Goldgran-Toledano D, Azoulay E, Garrouste-Orgeas M, Cohen Y, Schwebel C, Jamali S, Darmon M, Dumenil AS, Kallel H, Souweine B, Timsit JF. Severe hypothermia increases the risk for intensive care unit-acquired infection. Clin Infect Dis 2012; 54:1064-70. [PMID: 22291110 DOI: 10.1093/cid/cir1033] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Although hypothermia is widely accepted as a risk factor for subsequent infection in surgical patients, it has not been well defined in medical patients. We sought to assess the risk of acquiring intensive care unit (ICU)--acquired infection after hypothermia among medical ICU patients. METHODS Adults (≥18 years) admitted to French ICUs for at least 2 days between April 2000 and November 2010 were included. Surgical patients were excluded. Patient were classified as having had mild hypothermia (35.0°C-35.9°C), moderate hypothermia (32°C-34.9°C), or severe hypothermia (<32°C), and were followed for the development of pneumonia or bloodstream infection until ICU discharge. RESULTS A total of 6237 patients were included. Within the first day of admission, 648 (10%) patients had mild hypothermia, 288 (5%) patients had moderate hypothermia, and 45 (1%) patients had severe hypothermia. Among the 5256 patients who did not have any hypothermia at day 1, subsequent hypothermia developed in 868 (17%), of which 673 (13%), 176 (3%), and 19 (<1%) patients had lowest temperatures of 35.0°C-35.9°C, 32.0°C-34.9°C, and <32°C, respectively. During the course of ICU admission, 320 (5%) patients developed ICU-acquired bloodstream infection and 724 (12%) patients developed ICU-acquired pneumonia. After controlling for confounding variables in multivariable analyses, severe hypothermia was found to increase the risk for subsequent ICU-acquired infection, particularly in patients who did not present with severe sepsis or septic shock. CONCLUSIONS The presence of severe hypothermia is a risk factor for development of ICU-acquired infection in medical patients.
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Affiliation(s)
- Kevin B Laupland
- Team 11: Outcome of Respiratory Cancers and Mechanically Ventilated Patients, Integrated Research Center U823-Albert Bonniot Institute, Rond Point de la Chantourne, La Tronche, France
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100
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Hypothermia to Identify Therapeutic Targets for Stroke Treatment. Transl Stroke Res 2012. [DOI: 10.1007/978-1-4419-9530-8_15] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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