Seminars in respiratory and critical care medicine
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Obliterative bronchiolitis (OB) (formerly termed bronchiolitis obliterans), is a rare fibrotic disorder involving terminal and respiratory bronchioles. The term constrictive bronchiolitis is synonymous with OB. Clinically, OB is characterized by progressive (often fatal) airflow obstruction, the absence of parenchymal infiltrates on chest radiographs, a mosaic pattern of perfusion on high-resolution computed tomographic scan, poor responsiveness to therapy, and high mortality rates. ⋯ Other causes of OB include connective tissue disease (CTD) (particularly rheumatoid arthritis); lower respiratory tract infections; inhalation injury; exposure or inhalation of toxic fumes, metals, dusts, particulate matter, or pollutants; occupational exposures; drug reactions; consumption of uncooked leaves of Sauropus androgynus; chronic hypersensitivity pneumonia; diffuse neuroendocrine cell hyperplasia; miscellaneous. When no cause is identified, the term cryptogenic obliterative bronchiolitis is used. This review discusses the salient clinical, radiographic, and histological features of OB and presents a management approach.
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Semin Respir Crit Care Med · Oct 2012
Case ReportsNeurofibromatosis-associated diffuse lung disease: case report.
Since the initial report in 1963 several small case series described an association between neurofibromatosis (NF) and interstitial lung disease. To date, more than 60 cases of interstitial lung disease associated with NF have been reported, but relatively few reports included high-resolution computed tomographic (HRCT) scans. ⋯ We present the case of a 34-year-old male smoker with NF and HRCT findings of diffuse lung disease including bullous emphysema, thin-walled cysts, and diffuse ground glass. Although NF-associated diffuse lung disease (NF-DLD) is disputed as a clinical entity by some, the case presented here adds to the accumulating evidence that NF-DLD is a distinct manifestation of neurofibromatosis.
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Semin Respir Crit Care Med · Aug 2012
The burdens of survivorship: an approach to thinking about long-term outcomes after critical illness.
Internationally accepted approaches to the study of functioning and disability can inform critical care practitioners and scholars in their study of functional limitations, disability, and quality of life after critical illness and intensive care. Therefore this article provides an introduction to the World Health Organization's International Classification of Functioning, Disability and Health (ICF). The Institute of Medicine has also recommended this approach for the study of disability. ⋯ The ICF draws attention to effect modifiers that can prevent problems at one level from progressing (or conversely can hasten their progression) to profound decrements in a patient's quality of life. It is particularly relevant for studies of long-term outcomes after critical illness and post-intensive care syndrome (PICS). This article provides a discussion of the ICF specific to the intensive care unit and the disablement process, with particular attention to new opportunities for intervention and their implications for cost and quality of life.
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Semin Respir Crit Care Med · Aug 2012
ReviewShaping end-of-life care: behavioral economics and advance directives.
A central but unmet challenge in health care delivery is to increase the probability that the care patients receive near the end of their life is consistent with their goals, values, and preferences. Providing patient-centered care at the end of life is challenging. In their final days, nearly a third of older Americans need critical decisions made regarding the use or nonuse of life-sustaining interventions, but the patients themselves cannot participate in those decisions. ⋯ This article provides a new framework, based in behavioral economic theory, that may explain the current failures of ADs and point to potential solutions. Specifically, it discusses how five well-described cognitive biases that pervade human decision making (affective forecasting errors, optimism bias, present-biased preferences, focusing effects, and default options) may account for deficiencies in the uptake, efficacy, and patient-centeredness of ADs. The text suggests potential solutions in need of evaluation, discusses metrics for assessing these interventions' benefits, and considers alternatives to the approaches advocated.
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Semin Respir Crit Care Med · Aug 2012
ReviewMedical and economic implications of cognitive and psychiatric disability of survivorship.
Current research indicates that the majority of survivors of critical illness develop post-intensive care syndrome (PICS), which includes new or worsening cognitive or psychiatric disorders that persist for months to years after critical illness. These cognitive impairments and psychiatric disorders are profound and long-lasting, adversely affecting survivors' daily functioning, ability to return to work, and quality of life, as well as altering the lives of their family members. The medical effects of cognitive and psychiatric disability after critical illness translate directly into a large economic burden. A large and growing body of intensive care unit (ICU) survivors with cognitive and psychiatric morbidities presents challenges for research and identification of best practices and interventions, both during and after the ICU, including rehabilitation to prevent or remediate long-term neurological outcomes.