La Revue du praticien
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Carbon monoxide (CO) poisoning is still complicated by a high mortality and morbidity rate. Diagnosis can be obvious but is most of time difficult and sometimes remained unknown. It is usually based on clinical signs and must be confirmed by assessment of CO level in room air or in patient's expired breathing or blood and detection of a source. ⋯ All CO poisoning has to be declared to sanitary authority, which will in turn conduct a technical inspection to remove the source. The patient must be informed that he is at risk of new poisoning and of neurological complications. Progress in prevention and research in therapeutics are needed in order to reduce CO related morbidity.
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The vasculitides involving the lower respiratory tract are mainly the small vessels vasculitides associated with antineutrophil cytoplasmic autoantibodies including Wegener granulomatosis (WG), microscopic polyangiitis (MPA), and Churg-Strauss syndrome (SCS). WG pulmonary manifestations mainly consist of nodules and pneumonias often cavitary, and tracheobronchial stenoses. ⋯ In SCS, asthma with eosinophilia and further eosinophilic pneumonia are the characteristic pulmonary features. Lung biopsy may be necessary in WG to obtain a definite diagnosis when no other site for biopsy is possible.