An 18-year-old woman with a history of refractory complex partial epilepsy presented for evaluation of snoring and episodes of gasping for air during sleep. She had uncontrolled epilepsy since the age of 8 years despite trial of multiple antiepileptic medications. She eventually underwent an implantation of a vagus nerve stimulator (VNS) device (model 103; Cyberonics Inc) with gradual adjustment of the VNS settings for better seizure control.

A 72-year-old female nonsmoker was admitted to our Thoracic Surgery Unit in 2013 because of a lesion detected on chest CT scan during oncologic follow-up. Her medical history was significant for the development of a single pulmonary metastasis discovered 1 year after sigmoidectomy for colic adenocarcinoma. At that time, the patient was treated with six cycles of neoadjuvant chemotherapy followed by left lower lobectomy. Histologic examination demonstrated a pulmonary metastasis of colic adenocarcinoma with diffuse necrotic areas. The patient underwent subsequent adjuvant chemotherapy with capecitabine and was followed annually with biohumoral oncologic screening (carcinoembryonic antigen, carbohydrate antigen 19-9), chest-abdomen CT scan, and colonoscopy.

We present the case of a 71-year-old woman with a long-standing history of refractory pulmonary sarcoidosis, who, upon commencement of treatment with lenalidomide for her newly diagnosed 5q-myelodysplastic syndrome, showed a remarkable, immediate, unexpected response and recovery of her sarcoidosis-related symptoms, improvement of her vital capacity, and complete clearance of her bibasal alveolor infiltrates. To our knowledge, this is the first case to report on the significant and immediate efficacy of lenalidomide in the management of pulmonary sarcoidosis. It provides a potential role for the use of lenalidomide as a novel therapeutic agent in patients with refractory pulmonary sarcoidosis.

COPD is characterized by chronic airway inflammation and remodeling, with serious modifications of the extracellular matrix (ECM). Hyaluronic acid (HA) is an abundant ECM molecule in the lung with various biologic functions that depend on its molecular weight (MW). High-MW HA exhibits antiinflammatory and immunosuppressive effects, whereas low-MW HA is proinflammatory. In this study, we investigated whether acute exacerbations of COPD (AECOPDs), which affect patient quality of life and survival, are associated with altered HA turnover in BAL.

High bronchodilator reversibility in adult asthma is associated with distinct clinical characteristics. This analysis compares lung function, biomarker profiles, and disease control in patients with high reversibility (HR) and low reversibility (LR) asthma.

Since pulmonary nontuberculous mycobacteria (PNTM) lung disease was last reviewed in CHEST in 2008, new information has emerged spanning multiple domains, including epidemiology, transmission and pathogenesis, clinical presentation, diagnosis, and treatment. The overall prevalence of PNTM is increasing, and in the United States, areas of highest prevalence are clustered in distinct geographic locations with common environmental and socioeconomic factors. Although the accepted paradigm for transmission continues to be inhalation from the environment, provocative reports suggest that person-to-person transmission may occur. A panoply of host factors have been investigated in an effort to elucidate why infection from this bacteria develops in ostensibly immunocompetent patients, and there has been clarification that immunocompetent patients exhibit different histopathology from immunocompromised patients with nontuberculous mycobacteria infection. It is now evident that Mycobacterium abscessus, an increasingly prevalent cause of PNTM lung disease, can be classified into three separate subspecies with differing genetic susceptibility or resistance to macrolides. Recent publications also raise the possibility of improved control of PNTM through enhanced adherence to current treatment guidelines as well as new approaches to treatment and even prevention. These and other recent developments and insights that may inform our approach to PNTM lung disease are reviewed and discussed.

Serum angiotensin-converting enzyme (ACE) levels may be decreased by use of ACE inhibitor (ACEI) medication. In this study, we determined how often ACE levels were measured in patients receiving ACEI therapy.

Pathophysiologic gaps in the actions of currently available treatments for asthma and COPD include neutrophilic inflammation, airway remodeling, and alveolar destruction. All of these processes can be modulated by cyclic adenosine monophosphate-elevating prostaglandins E2 and I2 (also known as prostacyclin). These prostanoids have long been known to elicit bronchodilation and to protect against bronchoconstriction provoked by a variety of stimuli. Much less well known is their capacity to inhibit inflammatory responses involving activation of lymphocytes, eosinophils, and neutrophils, as well as to attenuate epithelial injury and mesenchymal cell activation. This profile of actions identifies prostanoids as attractive candidates for exogenous administration in asthma. By contrast, excessive prostanoid production and signaling might contribute to both the increased susceptibility to infections that drive COPD exacerbations and the inadequate alveolar repair that characterizes emphysema. Inhibition of endogenous prostanoid synthesis or signaling, thus, has therapeutic potential for these types of patients. By virtue of their pleiotropic capacity to modulate numerous pathophysiologic processes relevant to the expression and natural history of airway diseases, prostanoids emerge as attractive targets for therapeutic manipulation.

Critical care transesophageal echocardiography (TEE) is useful in characterizing shock states encountered by intensivists when transthoracic echocardiography (TTE) gives insufficient information or when more detailed analysis of cardiac structures is needed. It is safe, feasible, and easy to learn and is a recommended component of advanced critical care echocardiography. This article reviews critical care TEE regarding training, equipment, comparison with TTE, indications, safety, and standard views of critical care TEE. It should be considered a companion article to a recent two-part series in CHEST that focused on advanced critical care TTE. Included with this article is an online supplement that has a representative series of critical care TEE images with clinical commentary.