Articles: critical-illness.
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Oxidation-reduction (redox) reactions, and the redox potential (RP) that must be maintained for proper cell function, lie at the heart of physiologic processes in critical illness. Imbalance in RP reflects systemic oxidative stress, and whole blood RP measures have been shown to correlate with oxygen debt level over time in swine traumatic shock. We hypothesize that RP measures reflect changing concentrations of metabolites involved in oxidative stress. To test this hypothesis, we compared blood and urine RP with concentrations of multiple metabolites in a swine traumatic shock model to identify meaningful RP-metabolite relationships. ⋯ Real-time RP measures demonstrate significant relationships with metabolites attributable to metabolic pathways involved in systemic responses to oxidative stress, as well as those involved in these processes. These data support RP measures as a feasible, biologically relevant marker of oxidative stress. As a direct measure of redox state, RP may be a useful biomarker and clinical tool in guiding diagnosis and therapy in states of increased oxidative stress and may offer value as a marker for organ injury in these states as well.
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Fibrinogen to albumin ratios (FAR) have shown to be a promising prognostic factor for improving the predictive accuracy in various diseases. This study explores FAR's prognostic significance in critically ill patients with acute kidney injury (AKI). All clinical data were extracted from the Multiparameter Intelligent Monitoring in Intensive Care Database III version 1.4. ⋯ Multivariate analysis demonstrated that higher FAR was an independent predictor of in-hospital mortality after adjusting for potential confounders (HR, 95% CI 1.23, 1.03-1.48, P = 0.025). A nonlinear relationship between FAR and in-hospital mortality was observed. FAR may serve as a potential prognostic biomarker in critically patients with AKI and higher FAR was associated with increased risk of in-hospital mortality among these patients.
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J Pain Symptom Manage · Jun 2022
Improving Outcomes Measurement in Palliative Care: The Lasting Impact of Randy Curtis and his Collaborators.
Palliative care research is deeply challenging for many reasons, not the least of which is the conceptual and operational difficulty of measuring outcomes within a seriously ill population such as critically ill patients and their family members. This manuscript describes how Randy Curtis and his network of collaborators successfully confronted some of the most vexing outcomes measurement problems in the field, and by so doing, have enhanced clinical care and research alike. Beginning with a discussion of the clinical challenges of measurement in palliative care, we then discuss a selection of the novel measures developed by Randy and his collaborators and conclude with a look toward the future evolution of these concepts. Randy and his foundational work, including both successes as well as the occasional near miss, have enriched and advanced the field as well as (immeasurably) impacted the work of so many others-including this manuscript's authors.
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Dtsch. Med. Wochenschr. · Jun 2022
Review[Gastrointestinal motility disorders in critically ill patients].
The gastrointestinal tract is one of the most complex organ systems of the human body. On the one hand, it forms the absorption surface for nutrients, but on the other hand it is also a barrier for toxins, food components and against up to 1014 commensal microorganisms. ⋯ In this article, we review the latest updates on pathogenic relationships of motility disorders and diagnostic algorithms in intensive care patients. In addition to established therapies, new developments in the treatment of hypomotility are outlined.
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Background: Surrogates and physicians may differ in their priorities and perspectives when making decisions for incapacitated, critically ill patients. Objectives: To determine the extent to which surrogate and physician decisions to sustain life support are associated with their expectations for patient outcomes. Setting/Subjects: Surrogates and physicians of 100 mechanically ventilated patients at an academic, tertiary care medical center in the United States were surveyed. ⋯ In contrast, among physicians, confidence was not synonymous with optimism. Instead, the significant associations between expectations for patient survival and good quality of life with the agreement that mechanical ventilation should be continued were strengthened when physicians were confident, (R2 = 0.34, p < 0.01) and (R2 = 0.47, p < 0.001), respectively. Conclusion: Surrogates and physicians have different approaches to incorporating their expectations for patient prognosis and their confidence in these expectations when they are making decisions for incapacitated critically ill patients.