Respiratory medicine
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Respiratory medicine · Aug 2007
Effect of sleep on patient/ventilator asynchrony in patients undergoing chronic non-invasive mechanical ventilation.
Patients who require home non-invasive ventilation (NIV) during sleep normally have the ventilation settings adjusted empirically during daytime wakefulness. However, patient-ventilator asynchrony may occur during sleep. To detect the incidence of ineffective efforts (IE) during the sleep compared to wakefulness, we studied 48 patients already enrolled in a long-term home NIV programme. ⋯ We conclude that IE to breath are common during nocturnal NIV and that they may be associated with desaturations even in patients who are considered compliant and effectively treated.
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Respiratory medicine · Aug 2007
Use of spirometry and patterns of prescribing in COPD in primary care.
To investigate the use and interpretation of spirometry in primary care (PC) in the diagnosis of chronic obstructive pulmonary disease (COPD) and to identify the treatment schedules administered. ⋯ Only 58.4% of the cases included had undergone spirometry. Important deficiencies were observed in the interpretation of the results of spirometry. These difficulties may influence the low implementation of treatment guidelines in COPD in PC.
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Respiratory medicine · Aug 2007
Case ReportsNeuroendocrine cell hyperplasia as an unusual form of interstitial lung disease.
Two patients diagnosed with interstitial lung disease (ILD) secondary to pulmonary neuroendocrine cell (PNEC) hyperplasia are presented. ⋯ Two cases of ILD secondary to PNEC hyperplasia are presented, with clinical and radiological findings that might be mistaken for other types of idiopathic interstitial pneumonias. The disease course is described and the possible etiopathogenic role that PNECs might play in the development of lung fibrosis is discussed.
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Respiratory medicine · Aug 2007
Reference values for dynamic and static pulmonary compliance in men.
The aim of the present study was to determine new reference values and predictive variables for dynamic and static pulmonary compliance in men. The investigation was conducted as a prospective study in healthy, non-smoking men with normal pulmonary function parameters including spirometry, bodyplethysmography and CO diffusing capacity. The esophageal pressure method was used to measure dynamic compliance (Cdyn), specific dynamic compliance (Cdyn/ITGV), static compliance (Cstat) and specific static compliance (Cstat/ITGV). ⋯ Lung recoil pressures at all TLC levels significantly decreased with ageing. In conclusion, we demonstrated that the contribution of anthropometric variables to the regression equations of pulmonary compliance was low. With ageing the static pressure-volume curve of the lung shifted to the left without substantial alteration of the slope.
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Respiratory medicine · Aug 2007
Case ReportsMounier-Kuhn syndrome: a rare cause of severe bronchial dilatation with normal pulmonary function test: a case report.
Tracheobronchomegaly (TBM) (Mounier-Kuhn syndrome) is dilatation of the trachea and major bronchi because of atrophy or absence of elastic fibers and smooth muscle cells. We present a case of TBM with normal pulmonary function test (PFT). The patient was a 37-year-old man with increasing productive cough and without fever, wheezes, chest pain, weight loss or any respiratory disease. ⋯ PFT in large airway disorders may be normal while abnormalities may indicate underlying small airway disorder. An underlying small airway disorders is responsible for abnormal reports in PFT of these patients. We may need to re-evaluate the role of PFT within follow-up of patients with large airway disorder.