In distributive shock, the blood is not being maintained in the required and needed useful blood vessels. Likewise, the venous system must maintain tension as well, so as not to retain too much of the total blood supply. The arterial blood supply needs to maintain a certain tension in order to maintain blood pressure. A common way to conceptualize distributive shock is as a condition in which the vasculature has relaxed and dilated to the point of inadequacy. septic shock)ĭistributive shock is a condition in which the majority of blood is inappropriately distributed in the vasculature. Low blood volume, often due to hemorrhage or fluid shifting out of vasculatureīlood vessel dilation (e.g. Therefore, the simple assessment of blood pressure is not a sufficient way to evaluate potential shock in pediatrics. Without treatment, these compensatory systems can become overwhelmed and result in the child progressing quickly to critical hypotension and cardiac arrest. This is called compensatory shock and may only persist for minutes to hours before progressing to frank uncompensated shock unless treatment is initiated. In these cases, the child or the infant may be experiencing shock, but have high, normal, or low-normal blood pressure. Blood flow will be shunted from less vital organs such as the skin to more vital organs, such as the kidneys and the brain. The heart rate will increase in an attempt to increase cardiac output (stroke volume x heart rate). Importantly, the body will attempt to compensate for shock through various mechanisms, most commonly through increased heart rate. While it is sometimes used interchangeably with severe hypotension, shock does not only occur in the setting of severely low blood pressure. Shock is defined as a condition in which peripheral tissues and end organs do not receive adequate oxygen and nutrients.
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