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3.
Adv Exp Med Biol ; 1232: 25-31, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-31893390

RESUMO

Hypoxic ischemic encephalopathy (HIE) leads to significant mortality and morbidity, and therapeutic hypothermia (TH) has become a standard of care following HIE. After TH, the body temperature is brought back to 37 °C. Early electroencephalography (EEG) is a reliable outcome biomarker following HIE. We hypothesized that changes in cerebral oxidative metabolism, measured as Δ[oxCCO], in relation to changes in brain tissue oxygenation (measured as Δ[HbD]) during rewarming will correlate with injury severity as evidenced on amplitude integrated EEG/EEG at initial presentation. Broadband near-infrared spectroscopy (NIRS) and systemic data were collected during rewarming from 14 infants following HIE over a mean period of 12.5 h. All infants were monitored with video EEG telemetry using a standard neonatal montage. aEEG and EEG background was classified into mild, moderate and severely abnormal groups based on the background pattern. Two infants had mild, 6 infants had moderate and another 6 infants had severe abnormality at presentation. The relationship between [oxCCO] and [HbD] was evaluated between two groups of infants with abnormal electrical activity (mild vs moderate to severe). A significant difference was noted between the groups in the relationship between [oxCCO] and [HbD] (as r2) (p = 0.02). This result indicates that the mitochondrial injury and deranged oxidative metabolism persists in the moderate to severely abnormal group during rewarming.


Assuntos
Eletroencefalografia , Hipotermia Induzida , Hipóxia-Isquemia Encefálica , Biomarcadores/análise , Encéfalo/metabolismo , Humanos , Hipóxia-Isquemia Encefálica/diagnóstico , Lactente , Recém-Nascido , Reaquecimento
4.
Adv Exp Med Biol ; 1232: 299-306, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-31893424

RESUMO

Hypoxic ischemic encephalopathy (HIE) is a significant cause of death and neurological disability in newborns. Therapeutic hypothermia at 33.5 °C is one of the most common treatments in HIE and generally improves outcome; however 45-55% of injuries still result in death or severe neurodevelopmental disability. We have developed a systems biology model of cerebral oxygen transport and metabolism to model the impact of hypothermia on the piglet brain (the neonatal preclinical animal model) tissue physiology. This computational model is an extension of the BrainSignals model of the adult brain. The model predicts that during hypothermia there is a 5.1% decrease in cerebral metabolism, 1.1% decrease in blood flow and 2.3% increase in cerebral tissue oxygenation saturation. The model can be used to simulate effects of hypothermia on the brain and to help interpret bedside recordings.


Assuntos
Circulação Cerebrovascular , Cérebro , Hipotermia , Modelos Biológicos , Animais , Animais Recém-Nascidos , Circulação Cerebrovascular/fisiologia , Cérebro/metabolismo , Simulação por Computador , Humanos , Hipotermia Induzida , Hipóxia-Isquemia Encefálica , Suínos
5.
Crit Care ; 24(1): 6, 2020 01 06.
Artigo em Inglês | MEDLINE | ID: mdl-31907075

RESUMO

Targeted temperature management (TTM) is a complex intervention used with the aim of minimizing post-anoxic injury and improving neurological outcome after cardiac arrest. There is large variability in the devices used to achieve cooling and in protocols (e.g., for induction, target temperature, maintenance, rewarming, sedation, management of post-TTM fever). This variability can explain the limited benefits of TTM that have sometimes been reported. We therefore propose the concept of "high-quality TTM" as a way to increase the effectiveness of TTM and standardize its use in future interventional studies.


Assuntos
Parada Cardíaca , Hipotermia Induzida , Temperatura Corporal , Febre , Humanos , Temperatura Ambiente
7.
Arch Dis Child Fetal Neonatal Ed ; 105(1): 8-13, 2020 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-31036702

RESUMO

OBJECTIVE: Since therapeutic hypothermia became standard care for neonatal hypoxic-ischaemic encephalopathy (HIE), even fewer infants die or have disability at 18-month assessment than in the clinical trials. However, longer term follow-up of apparently unimpaired children is lacking. We investigated the cognitive, motor and behavioural performances of survivors without cerebral palsy (CP) cooled for HIE, in comparison with matched non-HIE control children at 6-8 years. DESIGN: Case-control study. PARTICIPANTS: 29 case children without CP, cooled in 2008-2010 and 20 age-matched, sex-matched and social class-matched term-born controls. MEASURES: Wechsler Intelligence Scales for Children, Fourth UK Edition, Movement Assessment Battery for Children, Second Edition (MABC-2) and Strengths and Difficulties Questionnaire. RESULTS: Cases compared with controls had significantly lower mean (SD) full-scale IQ (91 [10.37]vs105[13.41]; mean difference (MD): -13.62, 95% CI -20.53 to -6.71) and total MABC-2 scores (7.9 [3.26]vs10.2[2.86]; MD: -2.12, 95% CI -3.93 to -0.3). Mean differences were significant between cases and controls for verbal comprehension (-8.8, 95% CI -14.25 to -3.34), perceptual reasoning (-13.9, 95% CI-20.78 to -7.09), working memory (-8.2, 95% CI-16.29 to -0.17), processing speed (-11.6, 95% CI-20.69 to -2.47), aiming and catching (-1.6, 95% CI-3.26 to -0.10) and manual dexterity (-2.8, 95% CI-4.64 to -0.85). The case group reported significantly higher median (IQR) total (12 [6.5-13.5] vs 6 [2.25-10], p=0.005) and emotional behavioural difficulties (2 [1-4.5] vs 0.5 [0-2.75], p=0.03) and more case children needed extra support in school (34%vs5%, p=0.02) than the control group. CONCLUSIONS: School-age children without CP cooled for HIE still have reduced cognitive and motor performance and more emotional difficulties than their peers, strongly supporting the need for school-age assessments.


Assuntos
Hipotermia Induzida , Hipóxia-Isquemia Encefálica/terapia , Transtornos do Neurodesenvolvimento/diagnóstico , Estudos de Casos e Controles , Criança , Transtornos do Comportamento Infantil/diagnóstico , Compreensão , Feminino , Seguimentos , Humanos , Recém-Nascido , Masculino , Memória de Curto Prazo , Destreza Motora , Testes Neuropsicológicos , Estudos Prospectivos , Desempenho Psicomotor , Reino Unido , Escalas de Wechsler
9.
Arch Dis Child Fetal Neonatal Ed ; 105(1): 64-68, 2020 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-31092676

RESUMO

OBJECTIVE: Apgar scores of zero at 10 min strongly predict mortality and morbidity in infants. However, recent data reported improved outcomes among infants with Apgar scores of zero at 10 min. We aimed to review the mortality rate and neurodevelopmental outcomes of infants with Apgar scores of zero at 10 min in Japan. DESIGN: Observational study. PATIENTS: Twenty-eight of 768 infants registered in the Baby Cooling Registry of Japan between 2012 and 2016, at >34 weeks' gestation, with Apgar scores of zero at 10 min who were treated with therapeutic hypothermia. INTERVENTIONS: We investigated the time of first heartbeat detection in infants with favourable outcomes and who had neurodevelopmental impairments or died. MAIN OUTCOME MEASURES: Clinical characteristics, mortality rate and neurodevelopmental outcomes at 18-22 months of age were evaluated. RESULTS: Nine (32%) of the 28 infants died before 18 months of age; 16 (57%) survived, but with severe disabilities and 3 (11%) survived without moderate-to-severe disabilities. At 20 min after birth, 14 of 27 infants (52%) did not have a first heartbeat, 13 of them died or had severe disabilities and one infant, who had the first heartbeat at 20 min, survived without disability. CONCLUSION: Our study adds to the recent evidence that neurodevelopmental outcomes among infants with Apgar scores of zero at 10 min may not be uniformly poor. However, in our study, all infants with their first heartbeat after 20 min of age died or had severe disabilities.


Assuntos
Índice de Apgar , Asfixia Neonatal/mortalidade , Hipotermia Induzida , Hipóxia-Isquemia Encefálica/mortalidade , Transtornos do Neurodesenvolvimento/epidemiologia , Asfixia Neonatal/terapia , Reanimação Cardiopulmonar , Seguimentos , Gastrostomia/estatística & dados numéricos , Humanos , Hipóxia-Isquemia Encefálica/terapia , Lactente , Recém-Nascido , Intubação Intratraqueal , Japão/epidemiologia , Testes Neuropsicológicos , Sistema de Registros , Respiração Artificial/estatística & dados numéricos , Traqueostomia/estatística & dados numéricos , Escala de Memória de Wechsler
10.
Crit Care Resusc ; 21(4): 287-98, 2019 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-31778636

RESUMO

OBJECTIVE: Therapeutic hypothermia (TH) is defined as the designed reduction of the human body's core temperature to 32°C-35°C for a period of 24-48 hours. TH has been studied extensively in many diseases related to critical care illness. This meta-analysis assesses the effect of TH on mortality across different indications in medical, neurological and cardiothoracic care. DATA SOURCES: The online databases Embase, Ovid MEDLINE, TRIP and CINAHL were searched for eligible studies published between 1940 and October 2018. STUDY SELECTION: Randomised clinical trials of induced TH in adults for any indication. DATA EXTRACTION: Information about baseline characteristics of patients, mortality outcomes, cooling strategy and target temperature achieved in hypothermia and normothermia groups was collected. DATA SYNTHESIS: Eighty studies, with a total of 13 418 patients, were included in this meta-analysis: 22 studies for traumatic brain injury, six studies for stroke, five studies for out-of-hospital cardiac arrest (OHCA), 34 studies for intraoperative cardiopulmonary bypass, and 13 studies for other diseases. A total of 6901 patients (51.4%) were randomly allocated to the TH group and 6517 patients (48.6%) were randomised to the normothermia control group. The unadjusted analysis showed no significant difference in mortality across different critical care illnesses. However, after adjusting for population, gender, age and temperature, only the OHCA group showed a small statistically significant difference favouring TH, but this had a questionable clinical significance. CONCLUSIONS: This meta-analysis suggests that after decades of extensive research, TH has yet to show a beneficial effect on mortality across different critical care diseases.


Assuntos
Hipotermia Induzida/métodos , Unidades de Terapia Intensiva/estatística & dados numéricos , Parada Cardíaca Extra-Hospitalar/terapia , Adulto , Temperatura Corporal , Humanos , Hipotermia Induzida/mortalidade , Parada Cardíaca Extra-Hospitalar/mortalidade , Resultado do Tratamento
11.
Orv Hetil ; 160(46): 1840-1844, 2019 11.
Artigo em Húngaro | MEDLINE | ID: mdl-31707816

RESUMO

Long term survival of successfully resuscitated patients is primarily determined by their post-cardiac arrest neurological function. If the patient undergoes a long-term resuscitation or remains comatose as part of the post-cardiac arrest syndrome (PCAS), organ-specific intensive care is urged to aim hemodynamic stabilisation, normalisation of organ perfusion and prevention of injuries at cellular level. One of the basic measures of PCAS intensive care is to prevent hypoxic brain injury by mild therapeutic hypothermia (THT). The physiological changes of the human body at hypothermic conditions require high level monitoring and specially focused intensive care limiting its implementation. The multicentric, controlled, randomized targeted temperature management (TTM) trial published in 2013 compared the TTM against the THT in the treatment of PCAS patients. The equal outcome of the 2 methods has partly changed the practice of the intensivists in the treatment of such patients. This manuscript gives the pros and cons for each therapeutic method in post-resuscitation therapy. Nevertheless, the author shows the possible implementations and the DRG (diagnosis-related group) reimbursement of the method in Hungary. Orv Hetil. 2019; 160(46): 1840-1844.


Assuntos
Reanimação Cardiopulmonar , Parada Cardíaca/terapia , Hipotermia Induzida/métodos , Hipóxia Encefálica/prevenção & controle , Neuroproteção , Humanos , Hungria , Ressuscitação
12.
Orv Hetil ; 160(46): 1832-1839, 2019 Nov.
Artigo em Húngaro | MEDLINE | ID: mdl-31707820

RESUMO

Post-resuscitation brain injury forms the leading cause of death of patients after successful cardiopulmonary resuscitation that explains why post-resuscitation neuroprotection is the most important part of post-resuscitation therapy. The goals of the neuroprotection tools available today are preventing the evolution of primary and formation of secondary brain injury. We are going to summarize the neuroprotective possibilities that we can reach today. We will discuss the role of pharmacologic strategies including sedation, the modalities of upholding brain perfusion, the monitoring of proper hemodynamic variables and the practice of targeted temperature management. It is very important to avoid hypo- and hyperoxia, to keep normocapnia, normoglycemia and to control seizures during the management of post-cardiac arrest patients. There is still a lack of evidence to prove which pharmacologic agent may be effective in postresuscitation neuroprotection, however, there are some promising results regarding thiamine. Hemodynamic management guided by higher level hemodynamic monitoring may be beneficial in enhancing brain perfusion but more clinical studies are needed to investigate its usefulness. Targeted temperature management constitutes the main element of post-resuscitation neuroprotection, however, the details of its implementation raise several questions. Orv Hetil. 2019; 160(46): 1832-1839.


Assuntos
Lesões Encefálicas/prevenção & controle , Reanimação Cardiopulmonar/métodos , Parada Cardíaca/terapia , Hipotermia Induzida/métodos , Neuroproteção , Parada Cardíaca/complicações , Humanos , Fármacos Neuroprotetores/uso terapêutico
13.
Orv Hetil ; 160(46): 1826-1831, 2019 Nov.
Artigo em Húngaro | MEDLINE | ID: mdl-31707821

RESUMO

Out-of-hospital cardiac arrest (OHCA) presents a great challenge for the health care systems even in the highly developed countries. For several decades, our greatest efforts have been directed toward the improvement of the prehospital management, including promotion of lay resuscitation and deployment of public access automated defibrillators. Recently, the importance of the hospital phase of the OHCA-management has been also emphasized. Attention has been paid to targeted temperature management and also to early coronary intervention. For those patients who present with ST-elevation on their post-resuscitation ECG, our approach is straightforward: urgent coronary angiography is indicated. The optimal management of those survivors of OHCA who present without ST-elevation is, however, still debated. Although up to 30% of these subjects also suffer from acute occlusive epicardial coronary disease, the clear benefit of urgent coronary angiography for the whole group is yet to be documented. Several large-scale randomized studies are under way to resolve this question. In our present review we detail the above controversies and outline the future directions. Orv Hetil. 2019; 160(46): 1826-1831.


Assuntos
Reanimação Cardiopulmonar , Angiografia Coronária/métodos , Hipotermia Induzida , Parada Cardíaca Extra-Hospitalar/diagnóstico por imagem , Intervenção Coronária Percutânea/métodos , Humanos , Parada Cardíaca Extra-Hospitalar/terapia , Parada Cardíaca Extra-Hospitalar/urina , Intervenção Coronária Percutânea/efeitos adversos , Infarto do Miocárdio com Supradesnível do Segmento ST
15.
Rev Port Cir Cardiotorac Vasc ; 26(3): 223-224, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31734976

RESUMO

Cold agglutinins (CA) are autoantibodies whose clinical significance depends upon titer and thermal amplitude. Patients, which undergo cardio-pulmonary bypass and especially hypothermic cardioplegia myocardial protection, represent a challenge regarding operative management, as tissue temperature should be maintained above the threshold of agglutination. We report on a case in which the presence of CA was discovered during elective aortic valve replacement surgery, and managed with normothermic cardiopulmonary bypass and continuous retrograde warm blood cardioplegia administration.


Assuntos
Anemia Hemolítica Autoimune/complicações , Ponte Cardiopulmonar/métodos , Parada Cardíaca Induzida/métodos , Doenças das Valvas Cardíacas/cirurgia , Hipotermia Induzida/efeitos adversos , Anemia Hemolítica Autoimune/imunologia , Valva Aórtica/cirurgia , Autoanticorpos/efeitos adversos , Ponte Cardiopulmonar/efeitos adversos , Crioglobulinas/efeitos adversos , Procedimentos Cirúrgicos Eletivos , Parada Cardíaca Induzida/efeitos adversos , Doenças das Valvas Cardíacas/complicações , Implante de Prótese de Valva Cardíaca/efeitos adversos , Implante de Prótese de Valva Cardíaca/métodos , Humanos
16.
J Cardiovasc Surg (Torino) ; 60(6): 733-741, 2019 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-31599143

RESUMO

BACKGROUND: With the progressive aging of the population, aortic surgeons are caring for an increasing number of elderly patients. The objective of this study was to analyze early and late outcomes of aortic surgery with hypothermic circulatory arrest in patients aged 70 and above at our institution. METHODS: We performed a retrospective cohort study including every patient aged 70 years or older who underwent aortic surgery with hypothermic circulatory arrest between January 1995 and June 2016 at our institution. Operative results were compared with the contemporary younger counterparts aged <70 years. In-hospital mortality and postoperative stroke were primary outcomes of interest. The main secondary outcomes included acute renal failure, reoperation for bleeding, and spinal cord injury. RESULTS: In the study population, the in-hospital mortality was 16.8% (21/125). Ten (8.0%) patients presented postoperative stroke, and 6 had temporary neurologic disturbance (4.8%). Spinal cord injury occurred in 1 (0.8%) patient. For elective interventions and type A aortic dissections, the in-hospital mortality and stroke rates were 4.6% (3/65) and 7.7% (5/65), 26.8% (11/41) and 12.2% (5/41), respectively. The proportion of non-elective interventions, including type A aortic dissection, and the type of neuroprotective strategy were similar in septuagenarians and younger patients. Patients aged ≥70 had significant shorter cardiopulmonary bypass, myocardial ischemia, and circulatory arrest durations, compared to their younger counterparts. The in-hospital mortality of septuagenarians and younger patients were similar for elective surgery (4.6% vs. 4.7%, P=0.900) and aortic dissections (26.8% vs. 15.1%, P=0.107). There was no statistically significant difference between the two age groups regarding postoperative stroke, spinal cord injury, renal failure requiring dialysis or reintervention for bleeding. Estimated 1-, 3-, and 5-year survival was 78.0%, 70.6%, and 65.7%, respectively. The 5-year survival for elective surgery was 74.9% and 56.0% for non-elective procedures. CONCLUSIONS: Aortic surgery with circulatory arrest in the elderly demonstrated favorable early and late results when compared with younger individuals, with an acceptable operative risk even under emergency conditions, and should not be denied only because of the chronological age of the patients.


Assuntos
Aorta/cirurgia , Doenças da Aorta/cirurgia , Parada Cardíaca Induzida , Hipotermia Induzida , Procedimentos Cirúrgicos Vasculares , Fatores Etários , Idoso , Aorta/fisiopatologia , Doenças da Aorta/mortalidade , Doenças da Aorta/fisiopatologia , Feminino , Parada Cardíaca Induzida/efeitos adversos , Parada Cardíaca Induzida/mortalidade , Mortalidade Hospitalar , Humanos , Hipotermia Induzida/efeitos adversos , Hipotermia Induzida/mortalidade , Masculino , Complicações Pós-Operatórias/mortalidade , Complicações Pós-Operatórias/cirurgia , Reoperação , Estudos Retrospectivos , Fatores de Risco , Fatores de Tempo , Resultado do Tratamento , Procedimentos Cirúrgicos Vasculares/efeitos adversos , Procedimentos Cirúrgicos Vasculares/mortalidade
17.
Medicina (B Aires) ; 79 Suppl 3: 15-19, 2019.
Artigo em Espanhol | MEDLINE | ID: mdl-31603837

RESUMO

If a difficulty arises during birth, due to a maternal or fetal anomaly, acute or chronic, asphyxia of the fetal brain constitutes a greater risk, because it could result in the destruction of neurons and the possibility of evolving towards a Ischemic Hypoxic Encephalopathy with long -term sequelae. This review highlights the most recent scientific aspects but at the same time it offers an essential margin of knowledge regarding pathophysiology, diagnosis and treatment, as well as offering a perspective on the future of clinical care of ischemic hypoxic encephalopathy.


Assuntos
Hipóxia-Isquemia Encefálica/diagnóstico , Humanos , Hipotermia Induzida , Hipóxia-Isquemia Encefálica/fisiopatologia , Hipóxia-Isquemia Encefálica/terapia , Recém-Nascido , Recém-Nascido Prematuro , Fatores de Risco , Índice de Gravidade de Doença
18.
N Engl J Med ; 381(24): 2327-2337, 2019 12 12.
Artigo em Inglês | MEDLINE | ID: mdl-31577396

RESUMO

BACKGROUND: Moderate therapeutic hypothermia is currently recommended to improve neurologic outcomes in adults with persistent coma after resuscitated out-of-hospital cardiac arrest. However, the effectiveness of moderate therapeutic hypothermia in patients with nonshockable rhythms (asystole or pulseless electrical activity) is debated. METHODS: We performed an open-label, randomized, controlled trial comparing moderate therapeutic hypothermia (33°C during the first 24 hours) with targeted normothermia (37°C) in patients with coma who had been admitted to the intensive care unit (ICU) after resuscitation from cardiac arrest with nonshockable rhythm. The primary outcome was survival with a favorable neurologic outcome, assessed on day 90 after randomization with the use of the Cerebral Performance Category (CPC) scale (which ranges from 1 to 5, with higher scores indicating greater disability). We defined a favorable neurologic outcome as a CPC score of 1 or 2. Outcome assessment was blinded. Mortality and safety were also assessed. RESULTS: From January 2014 through January 2018, a total of 584 patients from 25 ICUs underwent randomization, and 581 were included in the analysis (3 patients withdrew consent). On day 90, a total of 29 of 284 patients (10.2%) in the hypothermia group were alive with a CPC score of 1 or 2, as compared with 17 of 297 (5.7%) in the normothermia group (difference, 4.5 percentage points; 95% confidence interval [CI], 0.1 to 8.9; P = 0.04). Mortality at 90 days did not differ significantly between the hypothermia group and the normothermia group (81.3% and 83.2%, respectively; difference, -1.9 percentage points; 95% CI, -8.0 to 4.3). The incidence of prespecified adverse events did not differ significantly between groups. CONCLUSIONS: Among patients with coma who had been resuscitated from cardiac arrest with nonshockable rhythm, moderate therapeutic hypothermia at 33°C for 24 hours led to a higher percentage of patients who survived with a favorable neurologic outcome at day 90 than was observed with targeted normothermia. (Funded by the French Ministry of Health and others; HYPERION ClinicalTrials.gov number, NCT01994772.).


Assuntos
Reanimação Cardiopulmonar , Coma/complicações , Parada Cardíaca/terapia , Hipotermia Induzida , Idoso , Temperatura Corporal , Encefalopatias/etiologia , Feminino , Seguimentos , Parada Cardíaca/complicações , Parada Cardíaca/mortalidade , Humanos , Unidades de Terapia Intensiva , Masculino , Pessoa de Meia-Idade , Parada Cardíaca Extra-Hospitalar/terapia , Método Simples-Cego
20.
Soins Pediatr Pueric ; 40(310): 14-19, 2019.
Artigo em Francês | MEDLINE | ID: mdl-31543229

RESUMO

Hypothermia therapy is a protocol put in place to treat neonatal hypoxic ischemic encephalopathy in the first six hours after birth in order to prevent irreversible brain damage. The parents are therefore immediately separated from the newborn and endure an interminable 72-hour wait before being able to really meet their baby. Psychological support is therefore necessary to be able to think the unthinkable.


Assuntos
Hipotermia Induzida , Hipóxia-Isquemia Encefálica/terapia , Pais/psicologia , Humanos , Recém-Nascido
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