Chronic obstructive pulmonary disease (COPD) is common and has significant morbidity mortality as the fourth leading cause of death in United States. In many patients, particularly those with emphysema, COPD characterized by markedly increased residual volume contributing to exertional dyspnea. Current therapies have limited efficacy. Surgical resection diseased areas lung reduce was effective ...

OBJECTIVE This study strived to evaluate the relationship between degree of pulmonary emphysema and cardiac ventricular function in chronic obstructive pulmonary disease (COPD) patients with pulmonary hypertension (PH) using electrocardiographic-gated multidetector computed tomography (CT). MATERIALS AND METHODS Lung transplantation candidates with the diagnosis of COPD and PH were chosen for...

RATIONALE Low-attenuation areas assessed by computed tomography reflect the extent of pathological emphysema and correlate with airflow limitation and mortality in patients with chronic obstructive pulmonary disease. The cumulative size distribution of low-attenuation area clusters follows a power law characterized by an exponent, D. The values of D reflect the complexity of the terminal airspa...

PURPOSE Subcutaneous emphysema arises when air is forced beneath the tissue, leading to swelling, crepitus on palpation, and potential to spread along the fascial planes. The goal of this literature review is to alert the oral and maxillofacial surgeon to the inciting factors, diagnosis, and management of subcutaneous emphysema. PATIENTS AND METHODS A comprehensive search of the medical and d...

Cigarette smoke is the most common cause of pulmonary emphysema, which results in an irreversible loss of lung structure and function. Th1 and Th17 immune responses have been implicated in emphysema pathogenesis; however, the drivers of emphysema-associated immune dysfunction are not fully understood. In this issue of the JCI, Shan and colleagues found that peroxisome proliferator-activated rec...

In 1963, Laurel and Erickson reported their discovery of severe ┙1-antitrypsin (AAT) deficiency and its association with emphysema (Laurell & Erickson, 1963). Soon after, Gross and coworkers reported that emphysema was induced in rats by the intratracheal instillation of a proteolytic enzyme (Gross et al.,1965). These findings led to the proteolytic hypothesis of emphysema (Janoff, 1985) which ...

We present a case of a gentleman in his 70s with extensive subcutaneous emphysema. Usually self-limiting, subcutaneous emphysema around the thoracic inlet can rarely lead to airway and cardiovascular compromise by compression of structures in the neck. This patient presented with a large pneumothorax on a background of chronic obstructive pulmonary disease (COPD). This was initially treated wit...