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The ability of the heart muscle to contract.
Myocardial contractility
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A fainting spell or transient loss of consciousness, often caused by an interruption of blood flow to the brain.
Syncope
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An extreme, life-threatening systemic allergic reaction that may include shock and respiratory failure.
Anaphylaxis (anaphylactic shock)
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A stat in which not enough O2 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, as well as other conditions.
Cardiogenic shock
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A balance of all systems of the body.
Homeostasis
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Shock caused by a sudden, temporary reduction in blood supply to the brain that causes fainting (syncope).
Psychogenic shock
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The presence of abnormally large amounts of fluid between cells in body tissues, causing swelling of the affected area.
Edema
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The part of the nervous system that regulates involuntary functions, such as heart rate. blood pressure, digestion, and sweating.
Autonomic nervous system
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Shock that occurs when there is a block to blood flow in the heart or great vessels, causing an insufficinet blood supply to the body's tissues.
Obstructive shock
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Circulation of blood within an organ or tissue in adequate amounts to meet the current needs of the cells.
Perfusion
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A bluish gray skin color that is caused by a reduced level of O2 in the blood.
Cyanosis
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The force or resistance against which the heart pumps.
Afterload
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A swelling or enlargement of part of a blood vessel, resulting from weakening of the vessel wall.
Aneurysm
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The final stage of shock, resulting in death.
Irreversible shock
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Developing a sensitivity to a substance that initially caused no allergic reaction.
Sensitization
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Loss of water from the tissues of the body.
Dehydration
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The late stage of shock when blood pressure is falling.
Decompensated shock
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A condition in which low blood volume, due to massive internal or external bleeding or extensive loss of body water results in inadequate perfusion.
Hypovolemic shock
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Cirulatory failure caused by paralysis of the nerves that control the size of the blood vessels, leading to widespread dilation; seen in patients with spinal cord injuries.
Neurogenic shock
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a condition that occurs when there is widespread dilation of small arterioles, small venules, or both.
Distributive shock
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The early stage of shock in which the body can still compensate for blood loss.
Compensated shock
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Muscles arranged in circles that are able to decrease the diameter of tubes. Examples are found within the rectum. bladder. and blood vessels.
Sphincters
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A condition in which the circulatory system fails to provide sufficient circulation to enable every body part to perform its function; also called hypoperfusion.
Shock
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The precontraction pressure in the heart as the volume of blood builds up.
Preload
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Shock caused by severe infection, usually a bacterial infection.
Septic shock
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A condition in which the internal body temp falls below 95 deg F (35 degrees C), usually as a result of prolonged exposure to cool or freezing temps.
Hypothermia
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