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Query: UMLS:C0028754 (obesity)
 124,988 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Tobacco is implicated in multisystemic carcinogenesis through more than fifty identified carcinogenic metabolites that produce mutations responsible for alterations in cell cycle, immune response and endocrine regulation. Is one of nine risk factors identified in one third of cancer deaths together with obesity, sedentary, alcohol consumption, sexual promiscuity, drug addiction, and open and closed air contamination. Answering for cardiovascular diseases as the first cause of death in civilized world, tobacco is also pointed as the major factor implicated in the development of COPD (chronic obstructive pulmonary disease), RB-ILD (respiratory bronchiolitis and interstitial lung disease), DIP (desquamative interstitial pneumonia), bronchiolitis and bronchiolocentric interstitial fibrosis, Langerhans cells histiocytosis, eosinophilic pneumonia, sarcoidosis, epidermoid metaplasia in respiratory epithelium and lung cancer. The chronic tobacco induced inflammatory state is the basis for the acquisition of genetic alterations dependent on the tobacco contaminants.
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PMID:[Tobacco and morphology: pulmonary diseases]. 1763 77

Sternal instability predisposes to post-operative mediastinitis. Biomechanical studies have shown the superiority of rigid plate fixation over wire circlage in sternal healing. We studied rigid plate fixation for sternotomies in high-risk patients. High-risk patients were identified as those having three or more historically established risk factors for post-operative mediastinitis, such as COPD, re-operative surgery, renal failure, diabetes, steroid use, obesity, existing infection, and immunosuppression. Three hundred and twenty high-risk patients had prophylactic rigid plate fixation (Group S) between July 2000 and Jan 2005. The control group (Group C) comprised 215 patients with similar risk profiles that were not plated during 2000 and 2001. Average age, male-female ratio, risk factors and type of procedures were similar in both groups. Follow up ranged from 4 to 200 weeks. There were 12 peri-operative deaths (3.75%) in group S and 8.6% (18 patients) in group C. There were no instances of deep mediastinitis in group S. Group C had mediastinitis in 28 (13%, P<0.05), requiring high dose antibiotics and plastic surgical intervention. Sternal fixation with titanium plates is an effective way of ensuring sternal immobility thereby reducing the substrate for bony infections. Application of this technique in high-risk patients prevents mediastinitis.
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PMID:Sternal closure with titanium plate fixation--a paradigm shift in preventing mediastinitis. 1767 May 85

Spirometry is available in most GP surgeries and provides an invaluable tool for assessing respiratory function in chronic obstructive pulmonary disease (COPD) and asthma. Spirometry alone may not provide the clinician with an accurate assessment of lung disease as it misses two important measurements of lung volume. By measuring Residual Volume (RV) and Total Lung Capacity (TLC) it is possible to determine true restrictive or hyperinflated disease processes. Helium dilution, body plethysmography and nitrogen washout are three different methods which may be used to measure lung volume. These tests are normally only provided in the acute setting. Comparing values of RV and TLC to predicted values makes it possible to grade the severity of disease far more accurately than spirometry. Four case studies of asthma, obesity, COPD and pulmonary fibrosis clearly demonstrate anomalies that may arise when interpreting lung disease from spirometry compared to the interpretation made with additional lung volume data.
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PMID:Lung function made easy: assessing lung size. 1771 15

"Reverse epidemiology" refers to paradoxical and counterintuitive epidemiologic associations between survival outcomes and traditional cardiovascular risk factors such as obesity, high blood pressure, and high cholesterol. Reverse epidemiology has been well described in end stage renal disease, but also has been observed in chronic disease states, including chronic heart failure, rheumatoid arthritis, chronic obstructive pulmonary disease, and Acquired Immune Deficiency Syndrome, and in elderly populations. This review will highlight the recent medical literature on reverse epidemiology in these populations. Common pathophysiologic underpinnings in these chronic disease states may help explain the reversal of risk factors observed in these diverse populations. Furthermore, guidelines for the general population for optimal goals of weight, cholesterol levels, and blood pressure may not apply to special populations, including patients with chronic diseases or elderly persons.
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PMID:Reverse epidemiology beyond dialysis patients: chronic heart failure, geriatrics, rheumatoid arthritis, COPD, and AIDS. 1799 Dec 3

The prevalence of obesity has noticeably increased worldwide. The clinician is now frequently facing the challenge of managing patients with concomitant chronic obstructive pulmonary disease (COPD) or asthma and obesity. Obesity is often associated with a poorer control of these chronic respiratory diseases and the optimal management of these conditions in the presence of obesity remains to be determined. Herein, the authors review the present understanding of the influence of obesity in the development, clinical manifestations and management of asthma and COPD. The influence of weight loss, response to present therapies as well as new targets for the treatment of COPD and asthma in obese subjects are also discussed, in addition to future directions for research.
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PMID:Clinical management of chronic obstructive pulmonary disease and asthma in an obese patient. 1807 40

The complex nature of interactions between the pulmonary and cardiovascular systems is becoming increasingly appreciated. Pulmonary vascular abnormalities are frequently present in patients with respiratory disorders, including chronic obstructive pulmonary disease, idiopathic pulmonary fibrosis, sarcoidosis, neuromuscular or chest wall disorders, and disorders of ventilatory control including sleep apnea syndromes and obesity hypoventilation syndrome. Pulmonary hypertension, classified as group III in the World Health Organization classification scheme for pulmonary hypertension, may result in severe right ventricular dysfunction caused by lung disease, also known as cor pulmonale. The development of cor pulmonale is generally associated with poorer prognosis and increased death. Systemic manifestations of lung disease, particularly obstructive disorders, are also particularly relevant because they are associated with increased cardiac death and impaired health status. This article will discuss the most common pulmonary diseases and disorders of ventilatory control that cause pulmonary vascular abnormalities and cor pulmonale, with particular concentration on how treatment of these diseases may affect the heart. In addition, the complex nature of cardiac and lung disease will also be explored, particularly with respect to the relationship between chronic obstructive pulmonary disease, systemic inflammation, atherosclerosis, and cardiovascular death, which is currently a very active focus of research.
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PMID:Pulmonary diseases and the heart. 1808 41

The aim of the study was to reveal the epidemiological features of disturbances in the intestinal microflora of patients with chronic obstructive pulmonary disease suffering from excessive body weight (BW) or obesity. One hundred and fourteen COPD patients were examined. The diagnosis and the degree of severity were established according to GOLD program (2003) criteria. The COPD patients were distributed into three groups according to body mass index (BMI) (WHO classification, 1997): group I consisted of 36 patients with normal BW (a BMI of 19 to 25 kg/m2); group 2 consisted of 30 patients with excessive BW (a BMI of 25 to 29.9 kg/m2; 48 obese patients (a BMI of more than 30 kg/m2) constituted group 3. Changes in the intestinal microbiocenosis were found in most of the COPD patients; stages I and II of microbiological disturbances prevailed. Obesity, in addition to the severity of the degree and its phase, was a risk factor, determining the character and degree of disturbances in the intestinal microflora. The severity of dysbiotic intestinal changes was proportional to the degree of obesity.
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PMID:[The state of the intestinal microflora of patients with chronic obstructive pulmonary disease and obesity]. 1815 79

Asthma control is a key point in patient management. GINA's most recent report emphasises the need to investigate uncontrolled asthma, of which non-compliance with treatment, COPD, smoking, chronic sinusitis, gastroesophageal reflux disease and obesity are the usual causes. The aim of this work is to evaluate the role of pulmonary thromboembolism (PTE) in cases of difficult- -to-treat asthma. We reviewed the case reports of patients with severe persistent asthma followed in our Asthma Outpatients Clinic between 2004 and 2006. We selected the ones that maintained uncontrolled disease despite an optimal therapeutical approach and investigated the causes. In this group (n=254), 28 (11%) had severe persistent asthma and their mean age was 44 +/- SD18 years old. 86% were females. Of these, 57% (n=16) had uncontrolled disease: 35% (n=6) due to non-compliance with treatment; 29% (n=5) pulmonary thrombombolism (scintigraphic confirmation); 12% (n=2) severe rhinosinusitis; 6% (n=1) hypereosinophilic syndrome; 6% (n=1) persistent allergen exposure and 6% (n=1) are still being investigated. Patients with TPE (mean age 56 +/- SD9 years old; 80% females; 80% Caucasians) were diagnosed with asthma as adults (mean age 37 +/- SD14 years old). The mean time until the diagnosis of TPE was 18 +/- SD12 years. Predisposing factors for TPE were venous insufficiency (40%), hypertension (40%) and deficit of functional protein C and S (20%). All these patients received anticoagulant therapy (80% are still medicated). It should be noted that after the beginning of anticoagulants, 40% of the patients achieved control of their asthma and 40% have partially controlled disease. There were no hospital admissions for asthma exacerbations after the beginning of anticoagulation in this group. This study supports the inclusion of TPE in the group of comorbidities to consider while investigating uncontrolled asthma.
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PMID:[Pulmonary embolism and difficult-to-treat asthma]. 1818 29

These practice parameters are an update of the previously published recommendations regarding the use of autotitrating positive airway pressure (APAP) devices for titrating pressures and treating adult patients with obstructive sleep apnea syndrome. Continuous positive airway pressure (CPAP) at an effective setting verified by attended polysomnography is a standard treatment for obstructive sleep apnea (OSA). APAP devices change the treatment pressure based on feedback from various patient measures such as airflow, pressure fluctuations, or measures of airway resistance. These devices may aid in the pressure titration process, address possible changes in pressure requirements throughout a given night and from night to night, aid in treatment of OSA when attended CPAP titration has not or cannot be accomplished, or improve patient comfort. A task force of the Standards of Practice Committee of the American Academy of Sleep Medicine has reviewed the literature published since the 2002 practice parameter on the use of APAP. Current recommendations follow: (1) APAP devices are not recommended to diagnose OSA; (2) patients with congestive heart failure, patients with significant lung disease such as chronic obstructive pulmonary disease; patients expected to have nocturnal arterial oxyhemoglobin desaturation due to conditions other than OSA (e.g., obesity hypoventilation syndrome); patients who do not snore (either naturally or as a result of palate surgery); and patients who have central sleep apnea syndromes are not currently candidates for APAP titration or treatment; (3) APAP devices are not currently recommended for split-night titration; (4) certain APAP devices may be used during attended titration with polysomnography to identify a single pressure for use with standard CPAP for treatment of moderate to severe OSA; (5) certain APAP devices may be initiated and used in the self-adjusting mode for unattended treatment of patients with moderate to severe OSA without significant comorbidities (CHF, COPD, central sleep apnea syndromes, or hypoventilation syndromes); (6) certain APAP devices may be used in an unattended way to determine a fixed CPAP treatment pressure for patients with moderate to severe OSA without significant comorbidities (CHF, COPD, central sleep apnea syndromes, or hypoventilation syndromes); (7) patients being treated with fixed CPAP on the basis of APAP titration or being treated with APAP must have close clinical follow-up to determine treatment effectiveness and safety; and (8) a reevaluation and, if necessary, a standard attended CPAP titration should be performed if symptoms do not resolve or the APAP treatment otherwise appears to lack efficacy.
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PMID:Practice parameters for the use of autotitrating continuous positive airway pressure devices for titrating pressures and treating adult patients with obstructive sleep apnea syndrome: an update for 2007. An American Academy of Sleep Medicine report. 1822 88

Nocturnal noninvasive ventilation (NNV), the provision of ventilatory assistance via a noninvasive interface mainly during sleep, has assumed an important role in the management of chronic hypoventilatory syndromes. This review focuses on recent developments related to the use of NNV to treat various forms of chronic respiratory failure or insufficiency. In the past, NNV has been used mainly to treat respiratory insufficiency in patients with neuromuscular disease (NMD) or chest wall deformity; it should be instituted when these patients have orthopnea or daytime symptoms associated with nocturnal hypoventilation. An emerging application is to treat obesity-hypoventilation syndrome, particularly in continuous positive airway pressure (CPAP) failures. Additionally, it has a role in managing some patients with obstructive sleep apnea who are hypoventilating or find the lower expiratory pressure with bilevel positive pressure ventilators more tolerable than with CPAP alone. NNV to treat severe, stable COPD remains controversial, although a subgroup of patients with hypercapnea and sleep-disordered breathing (SDB) seems most likely to respond favorably. NNV to treat central SDB in patients with congestive heart failure continues to be investigated. Recent findings from a Canadian CPAP trial were disappointing, but preliminary results on a novel adaptive NNV mode are promising.
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PMID:Nocturnal noninvasive ventilation. 1913 18


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