Chest
-
Randomized Controlled Trial Multicenter Study Comparative Study
Evaluation of the Predictive Value of a Clinical Worsening Definition Using 2-Year Outcomes in Patients With Pulmonary Arterial Hypertension: A REVEAL Registry Analysis.
Time to clinical worsening has been proposed as a primary end point in clinical trials of pulmonary arterial hypertension (PAH); however, neither standardized nor validated definitions of clinical worsening across PAH trials exist. This study aims to evaluate a proposed definition of clinical worsening within a large prospective, observational registry of patients with PAH with respect to its value as a predictor of proximate (within 1 year) risk for subsequent major events (ie, death, transplantation, or atrial septostomy). ⋯ Clinical worsening was highly predictive of subsequent proximate mortality in this analysis from an observational study. These results validate the use of clinical worsening as a meaningful prognostic tool in clinical practice and as a primary end point in clinical trial design.
-
Randomized Controlled Trial Multicenter Study Comparative Study
Baseline Regional Perfusion Impacts Exercise Response to Endobronchial Valve Therapy in Advanced Pulmonary Emphysema.
Advanced heterogeneous emphysema with hyperinflation impacts exercise tolerance in COPD. Bronchoscopic lung volume reduction using Zephyr endobronchial valves (EBVs) has been shown to improve lung function in patients with heterogeneous emphysema. It is unclear whether the target lobe perfusion of patients receiving EBV therapy impacts exercise tolerance as measured by the 6-min walk test distance (6MWTD). ⋯ Patients having heterogeneous emphysema with a low baseline target lobe regional perfusion benefit from EBV therapy, independent of the degree of target lobe destruction. This effect is attenuated if the EBV therapy is not occlusive. Characterization of baseline perfusion may enhance clinical results of patients with emphysema undergoing EBV therapy.
-
Multicenter Study Comparative Study
ACUTE PULMONARY EMBOLISM: EXTERNAL VALIDATION OF AN INTEGRATED RISK STRATIFICATION MODEL.
In hemodynamically stable patients with acute pulmonary embolism, risk stratification is essential to drive clinical management. In these patients, risk stratification for in-hospital adverse outcomes based on markers of right ventricular dysfunction and injury has been proposed. ⋯ A model that includes both dysfunction and injury of the right ventricle has an incremental prognostic value for risk stratification in hemodynamically stable patients with acute pulmonary embolism. Patients with no dysfunction or injury have a favorable outcome.
-
Randomized Controlled Trial Multicenter Study Comparative Study
Is it possible to identify exacerbations of mild to moderate COPD that do not require antibiotic treatment?
Anthonisen criteria are widely used to guide the use of antibiotics in exacerbations of COPD. We evaluated the best predictors of outcomes in exacerbations of mild to moderate COPD not treated with antibiotics. ⋯ Among the Anthonisen criteria, only an increase in sputum purulence is a significant predictor of failure without antibiotics. The use of a point-of-care CRP test significantly increases the predictive accuracy of failure. Both of these easy-to-obtain factors may help clinicians to identify patients with exacerbated mild to moderate COPD who can be safely treated without antibiotics in an ambulatory setting.
-
Multicenter Study Comparative Study Clinical Trial
Clinical Outcomes of Indwelling Pleural Catheter-Related Pleural Infections: an international multicenter study.
Indwelling pleural catheters (IPCs) offer effective control of malignant pleural effusions (MPEs). IPC-related infection is uncommon but remains a major concern. Individual IPC centers see few infections, and previous reports lack sufficient numbers and detail. This study combined the experience of 11 centers from North America, Europe, and Australia to describe the incidence, microbiology, management, and clinical outcomes of IPC-related pleural infection. ⋯ The incidence of IPC-related pleural infection was low. The overall mortality risk from pleural infection in patients treated with IPC was only 0.29%. Antibiotics should cover S aureus and gram-negative organisms until microbiology is confirmed. Postinfection pleurodesis is common and often allows removal of IPC. Heterogeneity in management is common, and future studies to define the optimal treatment strategies are needed.