secondary shock, a state of physical collapse and prostration caused by numerous traumatic and pathological conditions. It develops over time after severe tissue damage and may merge with primary shock, accompanied by various signs, such as weakness, restlessness, low body temperature, low blood pressure, cold sweat, and reduced urinary output. Blood pressure drops progressively in this state, and death may occur within a relatively short time after onset unless appropriate treatment intervenes. Secondary shock is often associated with heat stroke, crushing injuries, myocardial infarction, poisoning, fulminating infections, burns, and other life-threatening conditions. The pathological characteristics of this state reflect changes in the capillaries, which become dilated and engorged with blood. Petechial hemorrhages develop in the serous membranes, edema swells the soft tissues, and the vital organs undergo degenerative changes. Compare hemorrhagic shock, primary shock.
