Chest
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Observational Study
Relationship of Bisphosphonate Therapy and Atrial Fibrillation/Flutter: Outcomes of Sleep Disorders in Older Men (MrOS Sleep) Study.
Prior studies suggested an association between bisphosphonates and atrial fibrillation/flutter (AF) in women. This relationship in men, including those with sleep-disordered breathing (SDB), remains unclear. This study evaluated the relationship between bisphosphonate use and prevalent (nocturnal) and incident (clinically relevant) AF in a population of community-dwelling older men. ⋯ These results support an association between bisphosphonate use and prevalent nocturnal AF in community-dwelling older men. The data further suggest that those with moderate to severe SDB may be a particularly vulnerable group susceptible to bisphosphonate-related AF. Similar associations were not seen for bisphosphonate use and clinically relevant incident AF.
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Observational Study
Cohort study on the management of cancer-associated venous thromboembolism aimed at the safety of stopping anticoagulant therapy in patients cured from cancer.
After diagnosis of cancer-associated VTE, guidelines recommend considering the continuation of anticoagulant treatment until the patient is cured of cancer, although the safety of stopping anticoagulant treatment after the patient is cured has never been evaluated. ⋯ Our data support the recommendation to stop anticoagulant treatment of cancer-associated VTE in patients cured of cancer. A cancer relapse seems to be a strong risk factor for recurrent symptomatic VTE.
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Review Meta Analysis
The presence of diffuse alveolar damage on open lung biopsy is associated with mortality in patients with acute respiratory distress syndrome: a systematic review and meta-analysis.
Diffuse alveolar damage (DAD) is considered the histologic hallmark of ARDS although DAD is absent in approximately half of patients with ARDS. The clinical implications of having the syndrome of ARDS with DAD vs other histologic patterns is unknown. To address this question, we conducted a meta-analysis of lung biopsy series for patients with ARDS. ⋯ This meta-analysis demonstrated that ARDS with DAD is associated with higher mortality than ARDS without DAD.
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COPD is a significant public health challenge, notably set to become the third leading cause of death and fifth leading cause of chronic disability worldwide by the next decade. Skeletal muscle impairment is now recognized as a disabling, extrapulmonary consequence of COPD that is associated with reduced quality of life and premature mortality. Because COPD typically manifests in older individuals, these clinical features may overlie normal age-associated declines in muscle function and performance. ⋯ This review focuses on the perspective that mitochondrial alterations contribute to impaired locomotor muscle performance in patients with COPD by reducing oxidative capacity and thus endurance, as well as by triggering proteolysis and thus contributing to atrophy and weakness. We discuss how the potential underlying mechanisms converge on mitochondria by targeting the peroxisome proliferator-activated receptor γ-coactivator-1α signaling pathway (thereby reducing mitochondrial biogenesis and muscle oxidative capacity and potentially increasing fiber atrophy) and how taking advantage of normal muscle plasticity and mitochondrial biogenesis may reverse this pathophysiology. We propose recent therapeutic strategies aimed at increasing peroxisome proliferator-activated receptor γ-coactivator-1α levels, such as endurance training and exercise mimetic drugs, with the strong rationale for increasing mitochondrial biogenesis and function and thus improving the muscle phenotype in COPD.
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Case Reports
An 80-Year-Old Man With Dyspnea and Bilateral Pleural Effusions After Partial Nephrectomy for Renal Cell Carcinoma.
An 80-year-old man presented because of superficial head trauma sustained after falling from bed. On review of systems, he reported worsening dyspnea on exertion, nonproductive cough, and weight loss over the preceding 2 to 3 months. There was no report of chest pain or leg swelling. ⋯ His medications included levothyroxine, hydrochlorothiazide, and clopidogrel. He had never smoked and had done clerical work until retirement. He was originally from Colombia.