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1.
Can J Surg ; 63(1): E38-E45, 2020 01 22.
Artigo em Inglês | MEDLINE | ID: mdl-31967443

RESUMO

Background: Scoring systems are important in prognostication and decision-making in the management of trauma patients. However, they often include an extensive list of factors not easily recalled by clinicians on admission. Additionally, multivariable analyses examining predictors of mortality in these patients is lacking. This study aimed to develop and validate a mortality prediction score for adult trauma inpatients. The intention was to create a scoring tool that could be easily remembered and implemented by clinicians. Methods: This is a retrospective analysis of 5175 adult trauma patients treated at a level 1 trauma centre in Hamilton, Ontario, from 2002 to 2013. For derivation of the score, logistic regression was applied to data collected from 2002 to 2006 to identify potential predictors. Variables with p ≤ 0.10 identified from univariable analysis were entered in the multivariable logistic regression. Statistical significance was set at a value of 0.05. The prediction performance of the score was then assessed and validated on data for trauma patients treated from 2007 to 2013. The discrimination ability and calibration of the validation model were assessed. Frequencies, odds ratios with 95% confidence intervals (CIs) and C-statistics were reported. Results: The TRAAGIC prediction score (transfusion, age, airway, hyperglycemia, international normalized ratio, creatinine) showed a C-index of 0.85 (95% CI 0.83­0.87) in the derivation cohort. The TRAAGIC score had high discrimination and good calibration when applied to the validation cohort. Conclusion: The TRAAGIC score is an easily remembered and straightforward toolthat can reasonably predict inpatient mortality for adult trauma patients.


Contexte: Les systèmes de classification sont importants pour le pronostic et le processus décisionnel relatifs à la prise en charge des patients de traumatologie. Par contre, ces systèmes incluent souvent une longue liste de facteurs dont les cliniciens peuvent difficilement se rappeler quand un patient est admis. De plus, on déplore l'absence d'analyses multivariées sur les prédicteurs de mortalité chez ces patients. La présente étude visait à concevoir et valider un score de prédiction de la mortalité pour les polytraumatisés adultes hospitalisés. L'intention était de créer pour les médecins un outil de classification facile à retenir et simple à utiliser. Méthodes: Il s'agit d'une analyse rétrospective de 5175 polytraumatisés adultes traités dans un centre de traumatologie de niveau 1 de Hamilton, en Ontario, de 2002 à 2013. Le score est dérivé de l'analyse de régression logistique appliquée aux données recueillies de 2002 à 2006 pour dégager les prédicteurs potentiels. Les variables identifiées à partir d'analyses univariées dont p ≤ 0,10 ont été incluses dans l'analyse de régression logistique multivariée. La portée statistique a été fixée à 0,05. Le rendement prédictif du score a alors été évalué et validé pour les polytraumatisés traités de 2007 à 2013. On a évalué le pouvoir discriminant et l'étalonnage du modèle de validation, et on a fait état des fréquences, des rapports des cotes avec intervalles de confiance (IC) de 95 % et de la statistique C. Résultats: Le score de prédiction TRAAGIC (transfusion, âge, voies aériennes, hyperglycémie, ratio international normalisé, créatinine) a produit un indice de concordance de 0,85 (IC de 95 % 0,83­0,87) dans la cohorte de dérivation. Le score TRAAGIC s'est révélé doté d'un important pouvoir discriminant et d'un bon étalonnage lorsqu'on l'a appliqué à la cohorte de validation. Conclusion: Le score TRAAGIC est un outil facile à retenir et simple à utiliser qui permet de prédire raisonnablement le risque de mortalité chez les polytraumatisés adultes hospitalisés.


Assuntos
Transfusão de Sangue/estatística & dados numéricos , Creatinina/urina , Hiperglicemia/epidemiologia , Coeficiente Internacional Normatizado/estatística & dados numéricos , Intubação Intratraqueal/estatística & dados numéricos , Índices de Gravidade do Trauma , Ferimentos e Lesões/diagnóstico , Ferimentos e Lesões/mortalidade , Adulto , Fatores Etários , Idoso , Estudos de Coortes , Feminino , Humanos , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Modelos Estatísticos , Ontário/epidemiologia , Prognóstico , Reprodutibilidade dos Testes , Estudos Retrospectivos , Centros de Traumatologia/estatística & dados numéricos
2.
Blood ; 104(13): 3958-64, 2004 Dec 15.
Artigo em Inglês | MEDLINE | ID: mdl-15319291

RESUMO

Activated protein C (APC) supplementation significantly reduces mortality in patients with severe sepsis, presumably by down-regulating coagulation, inflammation, and apoptosis. In vivo, endogenous APC is generated from protein C (PC) "on demand" in response to elevated thrombin levels. Thrombomodulin and endothelial cell protein C receptor are endothelial receptors required to generate APC endogenously. Since these receptors may be down-regulated in sepsis, we measured plasma markers of APC generation in 32 patients with severe sepsis to determine whether APC generation is impaired and whether markers of APC generation correlate with 28-day mortality. Relative to normals, all patients had elevated F1 + 2 and thrombin-antithrombin complex (TAT) levels (markers of thrombin generation and inhibition, respectively), and 28 of 32 patients had reduced PC levels. In 20 patients, APC levels paralleled elevated F1 + 2 levels, whereas 12 patients had low APC levels despite elevated F1 + 2 levels, suggesting that APC generation is impaired in the latter. No significant differences exist between survivors and nonsurvivors with respect to baseline PC levels, F1 + 2 levels, and APACHE II (acute physiology and chronic health evaluation) scores. Baseline APC levels were higher in survivors (P = .024), and baseline F1 + 2/APC ratios were lower in survivors (P = .047). Larger studies are warranted to establish whether APC generation profiles aid in managing sepsis.


Assuntos
Proteína C/metabolismo , Sepse/sangue , APACHE , Adulto , Idoso , Idoso de 80 Anos ou mais , Ativação Enzimática , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Proteína C/uso terapêutico , Sepse/tratamento farmacológico , Sepse/mortalidade , Análise de Sobrevida , alfa 1-Antitripsina/metabolismo
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