COPD
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Chronic Obstructive pulmonary disease (COPD) is an important cause of morbidity and mortality in the United States and internationally. The purpose of this study was to describe spirometry use in the diagnosis of COPD and to evaluate the management of COPD occurring in a primary care clinic. ⋯ Overall there was low use of recommended medication combinations and stage appropriate treatment, with better observance of diagnostic and risk factor reduction guidelines. In order to improve COPD care for patients, physicians need education about the recommended stepwise treatment options and office systems that promote integration of pulmonary function testing findings into care.
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Posthypercapnic alkalosis (PHA) is frequently overlooked as a complication of mechanical ventilation in patients with exacerbation of chronic obstructive pulmonary disease (COPD). The current study was conducted to determine the incidence, risk factors for development and effect on outcome of PHA. Eighty-four patients (62 +/- 11 years, range 42-78 years, M:F 58: 26) with exacerbation of COPD with underlying chronic hypercapnic respiratory failure requiring mechanical ventilation were included in a retrospective fashion. ⋯ Corticosteroid use >or=10 days during the hospital stay was an independent risk factor for development of PHA (Adjusted OR, 95% CI: 9.4, 1.6-55.3; P = 0.013). Development of PHA was associated with an increased incidence of ventilator dependence (64.7% vs. 37.3%, OR, 95% CI: 3.1, 1.1-9.4, P = 0.04) and duration of ICU stay (14.7 +/- 6.7 vs. 9.5 +/- 5.9, P = 0.01) but no increase in hospital mortality (43.3% vs. 41.2%, P = NS). It is concluded that PHA is a common complication in patients with exacerbation of COPD requiring mechanical ventilation and is associated with increased incidence of ventilator dependence and ICU stay.
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Mortality and other long-term outcomes of COPD from epidemiological studies of cohorts based on the general population are still rare. In contrast, data from follow-ups of patients from hospitals and general practices are more common and demonstrate often a 5-year mortality of about 50% and even higher. The aim was to study 20-year outcomes, mainly mortality, in a COPD cohort derived from a population study. ⋯ The annual decline in FEV(1) among survivors was low to normal. Long-term follow-ups of subjects with COPD derived from population studies provide data reflecting the course of COPD in society better than follow-ups of hospital recruited patients, who represent the top of the iceberg. Surprisingly many with severe COPD were still alive after 20 years.
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Non-invasive ventilation (NIV) is a clinically proven, cost-effective intervention for acidotic exacerbations of COPD that is recommended by UK national guidelines. This study examines the extent to which these recommendations are being followed in the UK. Between August and October 2003 a national audit of COPD exacerbations was conducted by the Royal College of Physicians and the British Thoracic Society. 233 (94%) UK hospitals submitted data for 7,529 prospectively recruited acute COPD admissions, documenting process of care and outcomes from a retrospective case note audit. ⋯ Access to acute NIV is inadequate and does not conform with NICE and BTS guidelines. These observational audit data do not demonstrate benefits of NIV on survival when compared to conventional management, contrary to results from randomised trials. Reasons for this are unclear but unmeasured confounding factors and poor patient selection for NIV are likely explanations.