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Vasodilatory shock, vasogenic shock, or vasoplegic shock is a medical emergency belonging to shock along with cardiogenic shock, septic shock, allergen-induced shock and hypovolemic shock. When the blood vessels suddenly relax, it results in vasodilation .
Hypovolemic shock is a form of shock caused by severe hypovolemia (insufficient blood volume or extracellular fluid in the body). [1] [2] It can be caused by severe dehydration or blood loss. [3] [2] Hypovolemic shock is a medical emergency; if left untreated, the insufficient blood flow can cause damage to organs, leading to multiple organ ...
Shock is divided into four main types based on the underlying cause: hypovolemic, cardiogenic, obstructive, and distributive shock. [2] Hypovolemic shock, also known as low volume shock, may be from bleeding, diarrhea, or vomiting. [1] Cardiogenic shock may be due to a heart attack or cardiac contusion. [1]
Untreated hypovolemia or excessive and rapid losses of volume may lead to hypovolemic shock. [7] Signs and symptoms of hypovolemic shock include increased heart rate, low blood pressure, pale or cold skin, and altered mental status. When these signs are seen, immediate action should be taken to restore the lost volume.
Okay so this widespread vasodilation means very little vascular resistance, and blood can’t get the chance to unload as much oxygen as it cruises through the vasculature, and it gets back to the right side of the heart with leftover oxygen, so in this case, as opposed to cardiogenic and hypovolemic shock, MVO2 can be normal or even increased.
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The cause of inadequate tissue perfusion (blood delivery to tissues) in distributive shock is a lack of normal responsiveness of blood vessels to vasoconstrictive agents and direct vasodilation. [4] There are four types of distributive shock.
This causes them to relax (vasodilation) [4] resulting in a sudden decrease in blood pressure (secondary to a decrease in peripheral vascular resistance). Neurogenic shock results from damage to the spinal cord above the level of the 6th thoracic vertebra . [ 5 ]