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Neurologic Emerg
Chapter 13
Question | Answer |
---|---|
Absence seizure | Seizure that may be characterized by a brief lapse of attention in which the patient may stare and does not respond. Also known as petit mal seizure. |
Aphasia | The inability to understand or produce speech. |
Arterial Rupture | Rupture of a cerebral artery that may contribute to interruption of cerebral blood flow. |
Atherosclerosis | Disorder where cholesterol and calcium build up inside walls of blood vessels, forming plaque. Leads to partial/complete blockage of blood flow; plaque can also become a site where blood clots form, break off, and embolize elsewhere in the circulation. |
Aura | A sensation experienced prior to a seizure; serves as a warning sign that a seizure is about to occur. |
Cerebral Embolism | Obstruction of a cerebral artery caused by a clot that was formed elsewhere in the body and traveled to the brain. |
Cerebrovascular Accident (CVA) | An interruption of blood flow to the brain that results in the loss of brain function. |
Coma | A state of profound unconsciousness from which one cannot be roused. |
Coup-contrecoup brain injury | A brain injury that occurs when force is applied to the head and energy transmission through brain tissue causes injury on the opposite side of original impact. |
Dysrthria | the inability to proncounce speech clearly, often due to loss of the nerves or brain cells that control the small muscles in the larynx. |
Expressive Aphasia | A speech disorder in which a person can understand what is being said but cannot produce the right sounds in order to speak properly. |
Febrile seizures | Convulsions that result from sudden high fevers, particularly in children. |
Generalized seizure | Seizure characterized by severe twitching of all the body's muscles that may last several minutes or more; also known as a grand mal seizure. |
Hemiparesis | Weakness on one side of the body |
Hemorrhagic Stroke | One of the two main types of stroke; occurs as a result of bleeding inside the brain. |
Hypoglycemia | A condition characterized by low blood glucose levels. |
Incontinence | Loss of bowel and bladder control due to generalized seizure. |
Infarcted cells | cells in the brain that die as a result of loss of blood flow to the brain. |
Ischemia | A lack of oxygen in the cells of the brain that cause them to not function properly. |
Ischemic stroke | One of the two main types of stroke; occurs when blood flow to a particular part of the brain is cut off by a blockage (e.g., clot) inside a blood vessel. |
Postictal state | Period following a seizure that lasts between 5 and 30 minutes, characterized by labored respirations and some degree of altered mental status. |
Receptive aphasia | A speech disorder in which a person has trouble understanding speech but is able to speak clearly. |
Seizure | Generalized, uncoordinated muscular activity associated with loss of consciousness; a convulsion |
Status epilepticus | A condition in which seizures recur every few minutes, or last more than 30 minutes. |
Stroke | A loss of brain function in certain rain cells that do not get enough oxygen during a CVA. Usually caused by obstruction of the blood vessels in the brain that feed oxygen to the brain cells. |
Thrombosis | Clotting of the cerebral arteries that may result in the interruption of cerebral blood flow and subsequent stroke. |
Tonic-clonic | A type of seizure that features rhythmic back-and-forth motion of an extremity and body stiffness. |
Transient ischemic attack (TIA) | A disorder of the brain in which brain cells temporarily stop working because of insufficient oxygen, causing stroke-like symptoms that resolve completely within 24 hours of onset. |