Articles: function.
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Critical care medicine · Apr 2014
Multicenter StudyPolymorphisms in Tumor Necrosis Factor-α Increase Susceptibility to Intra-Abdominal Candida Infection in High-Risk Surgical ICU Patients*
To evaluate the influence of genetic polymorphisms on the susceptibility to Candida colonization and intra-abdominal candidiasis, a blood culture-negative life-threatening infection in high-risk surgical ICU patients. ⋯ We report a strong association between the promoter rs1800629 single-nucleotide polymorphism in tumor necrosis factor-α and an increased susceptibility to intra-abdominal candidiasis in a homogenous prospective cohort of high-risk surgical ICU patients. This finding highlights the relevance of the tumor necrosis factor-α functional polymorphism in immune response to fungal pathogens. Immunogenetic profiling in patients at clinical high risk followed by targeted antifungal interventions may improve the prevention or preemptive management of this life-threatening infection.
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Advances in medical care have led to an increasing elderly population. Elderly individuals should be able to participate in society as long as possible. However, with an increasing age their adaptive capacity gradually decreases, specially before and after major life events (like hospitalization and surgery) making them vulnerable to reduced functioning and societal participation. Therapeutic exercise before and after surgery might augment the postoperative outcomes by improving functional status and reducing the complication and mortality rate. ⋯ The perioperative exercise training protocol known under the name 'Better in, Better out' could be implemented in clinical care for the vulnerable group of patients scheduled for major elective surgery who are at risk for prolonged hospitalization, complications and/or death. Future research should aim to include this at-risk group, evaluate perioperative high-intensity exercise interventions and conduct adequately powered trials.
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Semin Respir Crit Care Med · Apr 2014
ReviewBiomarkers in connective tissue disease-associated interstitial lung disease.
This article reviews major biomarkers in serum and bronchoalveolar lavage fluid (BALF) with respect to their diagnostic and prognostic value in connective tissue disease-associated interstitial lung disease (CTD-ILD). In some CTD such as systemic sclerosis (SSc), the incidence of ILD is up to two-third of patients, and currently ILD represents the leading cause of death in SSc. Because of the extremely variable incidence and outcome of ILD in CTD, progress in the discovery and validation of biomarkers for diagnosis, prognosis, patients' subtyping, response to treatment, or as surrogate endpoints in clinical trials is extremely important. ⋯ Besides autoantibodies, an increase in serum or BALF of a biomarker of pulmonary origin may be able to predict or reflect the development of fibrosis, the impairment of lung function, and ideally also the prognosis. Promising biomarkers are lung epithelium-derived proteins such as KL-6 (Krebs von den Lungen-6), SP-D (surfactant protein-D), SP-A (surfactant protein-A), YKL-40 (chitinase-3-like protein 1 [CHI3L1] or cytokines such as CCL18 [chemokine (C-C) motif ligand 18]). In the future, genetic/epigenetic markers, such as human leukocyte antigen (HLA) haplotypes, single nucleotide polymorphisms, and micro-RNA, may help to identify subtypes of patients with different needs of management and treatment strategies.
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Despite many unanswered questions regarding the pathogenesis of interstitial lung disease in systemic sclerosis (SSc-ILD) and the lack of accurate epidemiological risk factors, there have been major advances in the identification and prognostic evaluation of SSc-ILD. The evaluation of disease severity is a multidisciplinary exercise, requiring the integration of pulmonary function tests, high-resolution computed tomography data, and symptomatic severity and these factors all need to be considered in the detection of disease progression. Except in a minority of patients with reversible inflammatory disease, the primary goal of treatment is the prevention of disease progression. ⋯ There is a need to broaden therapeutic approaches with the exploration of rituximab (based on recent pilot data) and antifibrotic agents, shown to have treatment effects in other fibrotic interstitial lung diseases. However, it is also important to avoid the overtreatment of SSc-ILD patients with limited nonprogressive lung involvement. In that setting, an initial policy of nonintervention but meticulous observation ("masterful inactivity with cat-like observation") is often warranted.
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Curr Opin Crit Care · Apr 2014
ReviewFever and therapeutic normothermia in severe brain injury: an update.
Fever is common in the ICU among patients with severe brain injury. Fever has been consistently shown to exacerbate brain injuries in animal models and has been consistently associated with poor outcome in human studies. However, whether fever control improves outcome and the ideal means of fever control remain unknown. This review will address recent literature on the impact of fever on severe brain injury and on interventions to maintain normothermia. ⋯ The value of therapeutic normothermia in the neurocritical care unit (NCCU) is increasingly accepted, yet prospective trials that demonstrate a functional benefit to patients are lacking.