Our editors will evaluate what you’ve submitted and determine whether or not to revise the article. Shock is often brought on by hemorrhage or overwhelming infection and is characterized typically by a weak, speedy pulse; low blood strain; and cold, sweaty skin. Depending on the trigger, however, some or all of those symptoms may be missing in particular person circumstances. A quick treatment of shock follows. For further dialogue, see cardiovascular illness: Physiological shock. Shock might consequence from a wide range of physiological mechanisms, including sudden reductions in the full blood quantity by acute blood losses, as in extreme hemorrhage; sudden reductions in cardiac output, as in myocardial infarction (heart assault); and widespread dilation of the blood vessels, as in some forms of infection. Whatever the central physiological mechanism, the impact of shock is to cut back blood move through the small vessels, or capillaries, the place oxygen and nutrients go into the tissues and wastes are collected for removal.