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1.
Am J Emerg Med ; 37(2): 254-259, 2019 02.
Artigo em Inglês | MEDLINE | ID: mdl-29891121

RESUMO

BACKGROUND: We evaluated factors associated with mortality in patients with moderate/severe generalized tetanus. METHODS: This retrospective study included patients with moderate/severe generalized tetanus admitted to the Affiliated Hospital of Nantong University (China) between January 2005 and January 2017. Clinical data were extracted from medical records. Patients were divided into two groups based on outcome (survival or death). Factors associated with mortality were analyzed using univariate and multivariate logistic regression. RESULTS: Seventy-five patients were included (57.3% male; age, 57.9 ±â€¯18.4 years; APACHE II score, 10.6 ±â€¯3.4; severe tetanus, 49.3%; mortality, 25.3%). Multivariate analysis identified severe tetanus (odds ratio [OR], 30.364; 95% confidence interval [CI], 2.459-374.896) and APACHE II score (OR, 1.536; 95%CI, 1.051-2.243) as positively associated with mortality, whereas high-calorie nutrition (OR, 0.027; 95%CI, 0.002-0.359) and dexmedetomidine use (OR, 0.035; 95%CI, 0.003-0.467) were negatively associated with mortality (all P < 0.05). CONCLUSION: Tetanus severity and APACHE II score were associated with mortality in patients with generalized tetanus, whereas high-calorie nutrition and dexmedetomidine use reduced the odds of death. High-calorie nutrition and dexmedetomidine administration may improve prognosis in adult patients with moderate/severe generalized tetanus.


Assuntos
Departamentos Hospitalares , Tétano/mortalidade , Tétano/terapia , APACHE , Adulto , Idoso , China/epidemiologia , Terapia Combinada , Dexmedetomidina/uso terapêutico , Ingestão de Energia , Feminino , Hospitais Universitários , Humanos , Hipnóticos e Sedativos/uso terapêutico , Masculino , Pessoa de Meia-Idade , Apoio Nutricional , Prognóstico , Estudos Retrospectivos , Tétano/diagnóstico
2.
Medicine (Baltimore) ; 96(44): e8417, 2017 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-29095276

RESUMO

To explore the relationship between the extent of central nervous system (CNS) injury and patient outcomes meanwhile research the potential risk factors associated with neurologic sequelae. In this retrospective cohort study, we analyzed data from 117 consecutive patients (86 survivors, 31 nonsurvivors) with exertional heat stroke (EHS) who had been admitted to intensive care unit (ICU) at 48 Chinese hospitals between April 2003 and July 2015. Extent of CNS injury was dichotomized according to Glasgow coma scale (GCS) score (severe 3-8, not severe 9-15). We then assessed differences in hospital mortality based on the extent of CNS injury by comparing 90-day survival time between the patient groups. Exploring the risk factors of neurologic sequelae. The primary outcomewas the 90-day survival ratewhich differed between the 2 groups (P = .023). The incidence of neurologic sequelae was 24.4%. For its risk factors, duration of recurrent hyperthermia (OR = 1.73, 95% CI: 1.20-2.49, P = .003), duration of CNS injury (OR = 1.39, 95% CI: 1.04-1.85, P = .025), and low GCS in the first 24 hours after admission (OR = 2.39, 95% CI: 1.11-5.15, P = .025) were selected by multivariable logistic regression. Cooling effect was eliminated as a factor (OR = 2641.27, 95% CI 0.40-1.73_107, P = .079). Significant differences in 90-day survival ratewere observed based on the extent of CNS injury in patients with EHS, and incidence was 24.4% for neurologic sequelae. Duration of recurrent hyperthermia, duration of CNS injury, and low GCS score in the first 24 hours following admission may be independent risk factors of neurologic sequelae. Cooling effect should be validated in the further studies.


Assuntos
Golpe de Calor/complicações , Esforço Físico , Traumatismos do Sistema Nervoso/etiologia , Adulto , Feminino , Febre/etiologia , Escala de Coma de Glasgow , Golpe de Calor/mortalidade , Mortalidade Hospitalar , Humanos , Incidência , Unidades de Terapia Intensiva/estatística & dados numéricos , Modelos Logísticos , Masculino , Análise Multivariada , Estudos Retrospectivos , Fatores de Risco , Fatores de Tempo , Traumatismos do Sistema Nervoso/mortalidade , Adulto Jovem
3.
ACS Nano ; 10(2): 1853-8, 2016 Feb 23.
Artigo em Inglês | MEDLINE | ID: mdl-26649888

RESUMO

Through magnetotransport measurements, we investigate ultrasmooth graphene bilayer nanoribbons obtained by multiwall carbon nanotube unzipping, under a high magnetic field up to 55 T. The high quality of the samples allows us to observe a Hall quantization in ribbons as narrow as 20 nm. The presence, for certain samples, of isolated peaks in the resistance plateau is found to be related to a very moderate long-range disorder, which induces magnetic-field-dependent interedge scattering. Tight-binding numerical simulations of electron transport illustrate and confirm this picture. Our study provides important insights into the quantum Hall effect in quasi-1D systems and indicates possible lines for future investigations of the nonchiral edge states induced by zigzag nanoribbon sections.

4.
Adv Mater ; 26(20): 3275-81, 2014 May 28.
Artigo em Inglês | MEDLINE | ID: mdl-24677272

RESUMO

Memristive devices based on vertical heterostructures of graphene and TiOx show a significant power reduction that is up to ∼10(3) times smaller than that of conventional structures. This power reduction arises as a result of a tunneling barrier at the interface. The barrier is tunable, opening up the possibility of engineering several key memory characteristics.

5.
J Nanosci Nanotechnol ; 12(9): 6873-9, 2012 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-23035408

RESUMO

Biosensors are becoming increasingly important due to their applications in biological and chemical analyses, food safety industry, biomedical diagnostics, clinical detection, and environmental monitoring. Recent years, nanostructured semiconductor materials have been used to fabricate biosensors owing to their biocompatibility, low toxicity, high electron mobility, and easy fabrication. In the present study, we focus on recent various biosensors based on the one-dimensional semiconductor nanomaterials such as electrochemical biosensor, field-effect transistors biosensor, and label-free optical biosensor. In particular, the development of the electrochemical biosensor is discussed detailedly.


Assuntos
Técnicas Biossensoriais , Nanoestruturas , Semicondutores
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