Abstract
Shock is the physiologic evidence of cellular demand for energy exceeding mitochondrial capability to generate adenosine triphosphate (ATP) aerobically. With the notable exception of septic shock, most forms of shock result from decreases in systemic O2 transport (ṪO2) produced by loss of circulatory volume and heart or respiratory failure. These conditions alter distribution of cardiac output and blood flow (Q̇) within individual organs. These circulatory alterations are the expression of neural, humoral, and local metabolic mechanisms of vascular control that strive to maintain adequate tissue perfusion in vital organs, such as the heart, brain, adrenal glands, and skeletal muscle. Although our knowledge of blood flow redistribution during shock is incomplete, the determinants of organ blood flow during disease are examined in this chapter.
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Gutierrez, G., Brown, S.D. (1993). Response of the Macrocirculation. In: Schlag, G., Redl, H. (eds) Pathophysiology of Shock, Sepsis, and Organ Failure. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-76736-4_16
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DOI: https://doi.org/10.1007/978-3-642-76736-4_16
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