The major pathophysiologic mechanisms of thoracic trauma will be discussed. In the chest, anatomy and physiology are inextricably linked. The normal functions of the thoracic organs depend on normal anatomic compartmentation. When these compartments are either openedto atmospheric pressure or filled with fluids, normal physiologicmechanisms are interrupted. An injury to one thoracic organ alters the function of the other. Anesthesiologists must understand these interactions to provide proper care for the patient with cardiotho-racic trauma.
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