The primary function of the alveolar capillary unit is to oxygenate pulmonary venous blood and remove carbon dioxide (CO 2). Respiratory gases follow passive diffusion gradients, maintained by the cardiac and ventilatory pumps. In essence, the etiology of acute respiratory failure is often mixed, but is usually the consequence of mechanical pump failure and/or alveolar capillary dysfunction. Thus, hypoxemia results from hypoventilation, in which the underlying lungs are often normal, from shunt and membrane diffusion anomalies, and, most commonly, from ventilation-perfusion mismatch. ARDS is characterized by hypoxemia refractory to the provision of supplementing oxygen and a loss of lung compliance secondary to bilateral alveolar infiltration with non-cardiogenic edema and parenchymal consolidation. The consequences are ventilation-perfusion mismatching and a reduction in functional residual capacity. Strategies are aimed at supporting lung function during ARDS while resolution of lung injury occurs.

Healthy Fat Loss For A Longer Life

Healthy Fat Loss For A Longer Life

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