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1.
JAMA ; 322(13): 1261-1270, 2019 10 01.
Artigo em Inglês | MEDLINE | ID: mdl-31573637

RESUMO

Importance: Experimental data suggest that intravenous vitamin C may attenuate inflammation and vascular injury associated with sepsis and acute respiratory distress syndrome (ARDS). Objective: To determine the effect of intravenous vitamin C infusion on organ failure scores and biological markers of inflammation and vascular injury in patients with sepsis and ARDS. Design, Setting, and Participants: The CITRIS-ALI trial was a randomized, double-blind, placebo-controlled, multicenter trial conducted in 7 medical intensive care units in the United States, enrolling patients (N = 167) with sepsis and ARDS present for less than 24 hours. The study was conducted from September 2014 to November 2017, and final follow-up was January 2018. Interventions: Patients were randomly assigned to receive intravenous infusion of vitamin C (50 mg/kg in dextrose 5% in water, n = 84) or placebo (dextrose 5% in water only, n = 83) every 6 hours for 96 hours. Main Outcomes and Measures: The primary outcomes were change in organ failure as assessed by a modified Sequential Organ Failure Assessment score (range, 0-20, with higher scores indicating more dysfunction) from baseline to 96 hours, and plasma biomarkers of inflammation (C-reactive protein levels) and vascular injury (thrombomodulin levels) measured at 0, 48, 96, and 168 hours. Results: Among 167 randomized patients (mean [SD] age, 54.8 years [16.7]; 90 men [54%]), 103 (62%) completed the study to day 60. There were no significant differences between the vitamin C and placebo groups in the primary end points of change in mean modified Sequential Organ Failure Assessment score from baseline to 96 hours (from 9.8 to 6.8 in the vitamin C group [3 points] and from 10.3 to 6.8 in the placebo group [3.5 points]; difference, -0.10; 95% CI, -1.23 to 1.03; P = .86) or in C-reactive protein levels (54.1 vs 46.1 µg/mL; difference, 7.94 µg/mL; 95% CI, -8.2 to 24.11; P = .33) and thrombomodulin levels (14.5 vs 13.8 ng/mL; difference, 0.69 ng/mL; 95% CI, -2.8 to 4.2; P = .70) at 168 hours. Conclusions and Relevance: In this preliminary study of patients with sepsis and ARDS, a 96-hour infusion of vitamin C compared with placebo did not significantly improve organ dysfunction scores or alter markers of inflammation and vascular injury. Further research is needed to evaluate the potential role of vitamin C for other outcomes in sepsis and ARDS. Trial Registration: ClinicalTrials.gov Identifier: NCT02106975.


Assuntos
Ácido Ascórbico/administração & dosagem , Insuficiência de Múltiplos Órgãos/prevenção & controle , Síndrome do Desconforto Respiratório/tratamento farmacológico , Sepse/tratamento farmacológico , Vitaminas/administração & dosagem , Adulto , Idoso , Ácido Ascórbico/uso terapêutico , Biomarcadores/sangue , Proteína C-Reativa/análise , Método Duplo-Cego , Feminino , Humanos , Infusões Intravenosas , Unidades de Terapia Intensiva , Masculino , Pessoa de Meia-Idade , Insuficiência de Múltiplos Órgãos/etiologia , Escores de Disfunção Orgânica , Síndrome do Desconforto Respiratório/complicações , Síndrome do Desconforto Respiratório/mortalidade , Sepse/complicações , Sepse/mortalidade , Trombomodulina/sangue , Vitaminas/uso terapêutico
2.
Fam Med ; 2024 Jul 15.
Artigo em Inglês | MEDLINE | ID: mdl-39012292

RESUMO

BACKGROUND AND OBJECTIVES: Physicians have long been considered valued members of a solid US health care system. Significant changes in medical education, health care, and society at-large suggest that current medical students may face a different future. To help guide educators and policy makers, we set out to understand medical students' perceptions of the future of health care and their place in it. METHODS: In year one of a longitudinal study, we conducted in-depth interviews of Case Western Reserve University medical students. A multidisciplinary team performed iterative thematic analyses and sampling until reaching saturation on major themes. RESULTS: Eleven medical student participants described social and health care issues as major influences on their professional futures. Concerns included health care system failings, unsustainable costs, climate change, demographic shifts, disinformation, and public distrust in health care. Students looked forward to team practice and using technology, data, and artificial intelligence in care delivery. They hoped for greater access and equity in health care, with a focus on prevention and social, behavioral, and environmental drivers of health. Most students expected to be employed rather than in private practice and sought time/flexibility for professional and personal interests. Paying off medical school debt and advocating for patients and change were priorities. Many saw primary care as important, but fewer envisioned it as their career path of choice. CONCLUSIONS: Medical students envision a future shaped by health care systems and social issues. These findings can inform those helping students prepare for uncertainty and rapid change in their careers, their lives, and the lives of their patients.

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