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Query: UMLS:C0034067 (emphysema)
 11,506 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The aim of this study was to analyze the clinical spectrum and seek potential curable causes of spontaneous pneumomediastinum (SPM) in children in order to minimize respiratory morbidity. Medical records from 1986 to 2003 were retrospectively reviewed at a tertiary pediatric facility in northern Taiwan. Sixteen cases of SPM were identified. There were eleven boys and five girls (M:F = 2.2:1) and ages ranged from 2 to 17 years (average, 10 years). Cough (81%), dyspnea (75%) and chest pain (56%) were the predominant symptoms and expiratory wheezing (63%) and neck crepitus (50%) were the most common physical findings. The specific sign of Hamman's crunch was noted in only one child initially. A coughing-related Valsalva maneuver (13 patients/81%) was the most common cause of pneumomediastinum in these children. The most common underlying medical causes were asthma (8 patients/50%) and idiopathic origin (5 patients/31%). Acute gastroenteritis, foreign body aspiration and mycoplasmal pneumonia were each found in one patient respectively. All patients had subcutaneous emphysema on initial chest radiographs. Two patients were complicated by pneumothorax and required intensive respiratory therapy. The average hospital stay was 4 days (range 1-9 days). Rapid resolution of symptoms without long-term sequelae was common except for one patient who had hypoxic-ischemic encephalopathy with epilepsy after foreign body removal. We conclude that in young teenagers, who suffer from cough, dyspnea, chest pain and associated discomfort of throat or neck, the diagnosis of SPM should be considered and chest radiography including posterior-anterior and lateral projections should be performed to verify the diagnosis. Because of the high prevalence of asthma related SPM, children of idiopathic SPM should undergo diagnostic pulmonary function tests after the acute episode, to establish whether the child has asthma. Targeted investigations of the underlying causes of SPM might decrease respiratory morbidity and avoid further complications.
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PMID:Asthmatic versus non-asthmatic spontaneous pneumomediastinum in children. 1599 70

The present study was performed to clarify the clinical characteristics of chronic obstructive pulmonary disease (COPD) patients classified into phenotypes according to the dominancy of emphysema and the presence of bronchial wall thickening evaluated by chest high-resolution computed tomography (HRCT). Eighty-five patients with stable COPD (FEV1 < or = 80%) were examined by chest HRCT. Emphysematous changes and bronchial wall thickening were evaluated visually, and COPD patients were classified into three phenotypes: absence of emphysema, with little emphysema with or without bronchial wall thickening (A phenotype), emphysema without bronchial wall thickening (E phenotype), and emphysema with bronchial wall thickening phenotype (M phenotype). Clinical characteristics were compared among the three phenotypes. The A phenotype group showed a higher prevalence of subjects who had never smoked and patients with wheezing, higher values of body mass index (BMI) and DLco, milder lung hyperinflation, and greater reversibility of airflow limitation responsive to inhaled beta2-agonist as compared with the other phenotypes. The degree of emphysema was significantly associated with Brinkman index, lower BMI, decrease in DLco, lower FEV1/FVC. The presence of bronchial wall thickening in A- and M- phenotype was significantly associated with reversibility responsive to treatment with inhaled corticosteroid and sputum eosinophilia. These findings suggest that the morphological phenotypes of COPD show several clinical characteristics and different responsiveness to treatment with bronchodilators and inhaled corticosteroids.
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PMID:Characteristics of COPD phenotypes classified according to the findings of HRCT. 1654 42

Pulmonary emphysema is not an infrequent complication of tracheal compression due to goiter. In many cases the goiter is in the mediastinum and therefore overlooked. Among 13 patients with this combination of disease, chronic cough, dyspnea and wheezing were the chief respiratory symptoms. Ten of the 13 patients also had hyperthyroidism; in eight of the ten the disease was of the "masked" variety and both the thyrotoxicosis and the mediastinal mass were overlooked. Early recognition and surgical removal of substernal goiter may prevent or retard otherwise irreversible and progressive tracheobronchopulmonary disease. Medical management of such cases with thiouracil preparations may lessen the toxic symptoms but probably will not affect the mechanical compression of the trachea.
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PMID:Substernal goiter and pulmonary emphysema. 1812 Aug 60

We present an unusual case of a 71-year-old man with unilateral wheezing brought on by change in position. Isolated bronchomalacia in the absence of tracheal involvement occurs more commonly in children and in adults with emphysema, chronic bronchitis, extrinsic compression by tumors, compression by abnormal blood vessels or vascular rings, relapsing polychondritis, endotracheal intubation and mechanical ventilation, enlarged left atrium, trauma, and lung transplantation. Our patient had predominant unilateral bronchomalacia. In this report, we present the clinical features, review the literature, and describe the probable pathophysiology.
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PMID:A 71-year-old man with unilateral wheezing: an unusual cause. 1834 99

Alpha-1-antitrypsin deficiency (AAT) is one of the three most common lethal genetic diseases in the caucasian population (together with cystic fibrosis and Down syndrome). Its primary manifestation is early-onset panacinar emphysema. Slowly progressive dyspnea is the primary symptom, although some patients initially have symptoms of cough, sputum production, or wheezing. A minority of patients develops hepatic cirrhosis. We present a case of a 40 year-old male, light smoker, with chronic obstructive lung disease with predominance of panacinar emphysema, with AAT deficiency (72 mg/dl; normal values = 200-300 mg/dl) complicated with cor pulmonale and chronic respiratory failure. The main clinical consequence of AAT deficiency is the early onset of panacinar emphysema, typically more severe at the lung bases. Smoking plays an important part in the natural history of the disease, both increasing the severity and decreasing the age at onset of emphysema.
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PMID:A rare case of pulmonary emphysema. 1838 23

Diaphragmatic paralysis has a predictable effect on lung function. However, the symptoms depend on the preexisting heart-lung diseases and may mimic various cardiorespiratory processes. We describe the presentation in six patients. In a fit man, unilateral diaphragmatic paralysis caused dyspnea only at strenuous exercise. In a patient with emphysema it caused dyspnea mainly when carrying light weights. In another patient with emphysema it caused life-threatening hypoxemia simulating parenchymal lung disease. A patient with mild chronic obstructive lung disease and nocturnal wheezing following the onset of ULDP was believed for 15 years to have asthma. A patient with bilateral diaphragmatic weakness had severe choking sensation only in the supine position, simulating upper airway obstruction or heart failure. Afemale patient suffered nocturnal sweating due to ULDP. The clinical manifestations of diaphragmatic paralysis vary and can mimic a wide range of cardiorespiratory diseases.
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PMID:Diaphragmatic paralysis: a clinical imitator of cardiorespiratory diseases. 1884 54

Pneumomediastinum is defined as free air or other gases contained within the mediastinum. In children it is an uncommon clinical condition with good prognosis. It most frequently occurs with exacerbations of asthma but also may occur after cough, vomiting, excessive valsalva maneuver and after the first wheezing attack as well. The first-line treatment for pneumomediastinum is to relieve the inciting factor. Otherwise, no specific therapy is recommended for uncomplicated cases, three boys, with the ages of 4, 8 and 13, presented in the emergency department, each after a few days of shortness of breath and respiratory distress. Chest radiography revealed pneumomediastinum and subcutaneous emphysema which had occured after severe asthmatic attacks. All of these patients have improved spontaneously with conservative treatment.
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PMID:[Pneumomediastinum and subcutaneous emphysema during asthmatic attacks in three patients]. 1971 16

We describe the case of an adolescent who was admitted to the hospital because of sudden occurrence of chest pain, dyspnea and subcutaneous emphysema. On admission, physical examination revealed subcutaneous crepitations in the superior part of the rib cage, and auscultation of the chest showed widespread wheezing. The radiological assessment confirmed the diagnosis of pneumomediastinum and pneumothorax. A follow-up CT scan performed one week after the admission showed almost complete resolution of the radiological alterations. At the following visits, the patient was asymptomatic, but reported to have suffered from frequent episodes of rhinorrea, sneezing, nasal blockage, and sometimes, chest tightness, especially during exposure to pets and/or windy weather. Skin prick testing showed sensitivities to dermatophagoides pteronyssinus and farinae, grass pollen and dog dander. Spirometry documented significant improvement in lung function after short-acting bronchodilator, allowing for the diagnosis of asthma to be made. Although pneumomediastinum may be a complication of various respiratory diseases, including asthma, it has never been reported as the first presentation of underlying bronchial asthma. Herein, the physiopathological mechanisms, the diagnostic procedures and treatment of pneumomediastinum in asthma are discussed. We suggest that the diagnosis of asthma should be considered in the differential diagnosis of pneumomediastinum in adolescence.
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PMID:A 15-year-old boy with anterior chest pain, progressive dyspnea, and subcutaneous emphysema of the neck. 2097 97

Chronic obstructive pulmonary disease (COPD) is a heterogeneous disease and responses to therapies are highly variable. The aim of this study was to identify the predictors of pulmonary function response to 3 months of treatment with salmeterol/fluticasone in patients with COPD. A total of 127 patients with stable COPD from the Korean Obstructive Lung Disease (KOLD) Cohort, which were prospectively recruited from June 2005 to September 2009, were analyzed retrospectively. The prediction models for the FEV(1), FVC and IC/TLC changes after 3 months of treatment with salmeterol/fluticasone were constructed by using multiple, stepwise, linear regression analysis. The prediction model for the FEV(1) change after 3 months of treatment included wheezing history, pre-bronchodilator FEV(1), post-bronchodilator FEV(1) change and emphysema extent on CT (R = 0.578). The prediction models for the FVC change after 3 months of treatment included pre-bronchodilator FVC, post-bronchodilator FVC change (R = 0.533), and those of IC/ TLC change after 3 months of treatment did pre-bronchodilator IC/TLC and post-bronchodilator FEV(1) change (R = 0.401). Wheezing history, pre-bronchodilator pulmonary function, bronchodilator responsiveness, and emphysema extent may be used for predicting the pulmonary function response to 3 months of treatment with salmeterol/fluticasone in patients with COPD.
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PMID:Predictors of pulmonary function response to treatment with salmeterol/fluticasone in patients with chronic obstructive pulmonary disease. 2139 6

Chronic obstructive pulmonary disease (COPD) causes substantial morbidity and mortality and may be unrecognized in its early stages. Chronic lower respiratory disease (CLRD), which includes both COPD and asthma, was the third leading cause of death in the United States in 2008. COPD includes chronic bronchitis and emphysema, which both make emptying air from the lungs progressively more difficult and can be associated with cough, mucus production, wheezing, and breathlessness. Risk factors include primarily cigarette smoking, but also exposure to noxious particles or gases, recurrent infection, diet, and genetic factors. COPD is often preventable, but there is no cure. Treatment can control symptoms and slow disease progression. This report presents trends in COPD prevalence, hospitalization, and death rates, and detailed recent estimates for population subgroups. Asthma is excluded from this report because it is considered a different condition with fully reversible symptoms, although some people may have asthma and COPD concurrently.
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PMID:Chronic obstructive pulmonary disease among adults aged 18 and over in the United States, 1998-2009. 2214 36


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