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define shock.
A condition in which the circulatory system fails to provide sufficient circulation so that every body part can perform its function; also called hypoperfusion.
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What is an anaphylactic shock?
Severe shock caused by an allergic reaction.
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What is anaphylaxis?
An extreme, possibly life-threatening systemic allergic reaction that may include shock and respiratory failure.
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What is an aneurysm?
A swelling or enlargement of a part of an artery, resulting from weakening of the arterial wall.
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What is the autonomic nervous system in charge of?
The part of the nervous system that regulates functions, such as digestion and sweating, that are not controlled voluntarily.
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What is cardiogenic shock?
A state in which not enough oxygen is delivered to the tissues of the body, caused by low output of blood from the heart. It can be a severe complication of a large acute myocardial infarction.
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What is compensated shock?
The early stage of shock, in which the body can still compensate for blood loss.
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What is decompensated shock?
The late stage of shock, when blood pressure is falling.
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What is edema?
The presence of abnormally large amounts of fluid between cells in body tissues, causing swelling of the affected area.
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What is homeostasis?
A balance of all systems of the body.
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What is hypovolemic shock?
A condition in which low blood volume, due to massive internal or external bleeding or extensive loss of body water, results in inadequate perfusion.
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What is irreversible shock?
The final stage of shock, resulting in death.
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What is neurogenic shock?
Circulatory failure caused by paralysis of the nerves that control the size of the blood vessels, leading to widespread dilation; seen in spinal cord injuries.
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what is psychogenic shock?
Shock caused by a sudden, temporary reduction in blood supply to the brain that causes fainting (syncope).
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What is septic shock?
Shock caused by severe infection, usually a bacterial infection.
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what are sphincters?
Circular muscles that encircle and, by contracting, constrict a duct, tube, or opening.
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What is syncope?
Fainting spell or transient loss of consciousness.
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