![]() bacterial infection, and maintaining gas exchange. Treatment is directed at reducing the mechanical load applied to each breath, correcting specific precipitating factors, e.g. ![]() This breathing pattern results from adaptive physiological responses which lessen the risk of respiratory muscle fatigue and minimise breathlessness. This is largely the result of a shift to a rapid shallow breathing pattern and a rise in the dead space/tidal volume ratio of each breath. Significant ventilation/perfusion mismatching with a relative increase in the physiological dead space leads to hypercapnia and hence acidosis. ![]() The physiological basis of acute respiratory failure in COPD is now clear. ![]() However, other comorbid conditions, especially cardiovascular disease, are equally powerful predictors of mortality. Respiratory failure is still an important complication of chronic obstructive pulmonary disease (COPD) and hospitalisation with an acute episode being a poor prognostic marker. ![]()
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