Chest
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New markers of COPD and emphysema disease activity are urgently required since current measures of disease severity do not reflect the total disease burden nor predict disease progression. A recently described in vivo marker of neutrophil elastase activity (Aα-Val360) may be an effective marker of COPD and emphysema disease activity, and the current study explores its use in patients with α1-antitrypsin deficiency (AATD) across the disease severity spectrum with particular interest in whether it can be used as an early predictor of the need for intervention. ⋯ In cross-sectional studies, Aα-Val360 reflects disease severity in AATD and may be a useful marker of disease activity in patients with early disease in whom therapeutic intervention may be indicated.
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Investigators believe most patients with asthma have reversible airflow obstruction with treatment, despite airway remodeling and hyperresponsiveness. There are smokers with chronic expiratory airflow obstruction despite treatment who have features of both asthma and COPD. Some investigators refer to this conundrum as the asthma-COPD overlap syndrome (ACOS). ⋯ Recently we reported a new pathophysiologic observation in 10 treated never smokers with asthma with persistent expiratory airflow obstruction, despite partial reversibility: All 10 patients with asthma had a significant decrease in lung elastic recoil, and unsuspected, microscopic mild centrilobular emphysema was noted in all three autopsies obtained although it was not easily identified on lung CT scan. These sentinel pathophysiologic observations need to be confirmed to further unravel the epiphenomenon of ACOS. The proinflammatory and proteolytic mechanism(s) leading to lung tissue breakdown need to be further investigated.
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The high frequency of readmissions in patients with COPD remains a significant problem. The impact of a pulmonologist follow-up visit during the month after discharge from hospital because of COPD exacerbation on reducing readmissions was examined. A profile of patients who did not attend the follow-up visits was built. ⋯ Early follow-up visits with pulmonologists seem to reduce the exacerbation-related rehospitalization rates of patients with COPD. We recommend that patients have early postdischarge follow-up visits with pulmonologists.
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A previously healthy, immunocompetent 37-year-old man was hospitalized with a 3-month history of intermittent fevers and cough with mucopurulent sputum preceded by flu-like symptoms. Five episodes of similar symptoms had prompted two hospitalizations and three courses of outpatient antibiotics. ⋯ He was a nonsmoker with no alcohol or recreational drug use. He was an accountant in the military with no history of significant organic or inorganic dust exposures.