[单项选择]

Silent and Deadly

Transient ischemic attacks (TIAs), or ministrokes, result from temporary interruptions of blood flow to the brain. Unlike full strokes, they present symptoms lasting anywhere from a few seconds to 24 hours. Rarely do they cause permanent neurological damage, but they are often precursors of a major stroke.
"Our message is quite clear," says Dr. Robert Adams, professor of neurology at the Medical College of Georgia in August. "TIAs, while less severe than strokes in the short term, are quite dangerous and need a quick diagnosis and treatment as well as appropriate follow-up to prevent future injury. "
Unfortunately, ministrokes are greatly underdiagnosed. A study conducted for the National Stroke Association indicates that 2.5% of all adults aged 18 or older (about 4.9 million people in the U. S. ) have experienced a confirmed TIA. An additional 1.2 million Americans over the age of 45, the study showed, have mo
A. more dangerous than major strokes B silent and deadly
B. difficult to cure
C. sure to lead to major strokes

[单项选择]
Transient ischemic attacks (TIAs), or ministrokes, result from temporary interruptions of blood flow to the brain. Unlike full strokes, they present symptoms lasting anywhere from a few seconds to 24 hours. Rarely do they cause permanent neurological damage, but they are often precursors of a major stroke.
"Our message is quite clear," says Dr. Robert Adams, professor of neurology at the Medical College of Georgia in August. "TIAs, while less severe than strokes in the short term, are quite dangerous and need a quick diagnosis and treatment as well as appropriate follow-up to prevent future injury. "
Unfortunately, ministrokes are greatly underdiagnosed. A study conducted for the National Stroke Association indicates that 2.5% of all adults aged 18 or older (about 4.9 million people in the U. S. ) have experienced a confirmed TIA. An additional 1.2 million Americans over the age of 45, the study showed, have mo
A. The cause of them remains unidentified.
B. They seldom cause permanent neurological damage.
C. The symptoms of them are often passing.
D. They are not unrelated to major strokes.

[单项选择]
Transient ischemic attacks(TIAS), or ministrokes, result from temporary interruptions of blood flow to the brain. Unlike full strokes, they present symptoms lasting anywhere from a few seconds to 24 hours. Rarely do they cause permanent neurological damage, but they are often precursors of a major stroke.
"Our message is quite clear, "says Dr. Robert Adams, professor of neurology at the Medical College of Georgia in August. "TIAS, while less severe than strokes in the short term, are quite dangerous and need a quick diagnosis and treatment as well as appropriate follow-up to prevent future injury. "
Unfortunately, ministrokes are greatly underdiagnosed. A study conducted for the National Stroke Association indicates that 2.5~ of all adults aged 18 or older(about 4.9 million people in the U.S.)have experienced a confirmed TIA. An additional 1.2 million Americans over the age of 45, the study showed, have most li
A. The cause of them remains unidentified.
B. They seldom cause permanent neurological damage.
C. They symptoms of them are often passing.
D. They are not unrelated to major strokes.

[简答题]transient ischemic attack，TIA

[填空题]keep silent

[单项选择]2002年TIA工作组新的TIA概念，提出典型临床症状持续不超过（）
A. 2小时
B. 1小时
C. 12小时
D. 24小时
E. 30分钟

[多项选择]TIA的病因包括（）
A. 微栓塞
B. 动脉粥样硬化和狭窄
C. 血液高凝状态
D. 血压过低
E. 锁骨下动脉盗血综合征

[简答题]简述TIA的治疗原则。

[简答题]简述TIA的临床表现。

[简答题]TIA的治疗原则是什么

[单项选择]治疗TIA一般首选（）。
A. 口服阿司匹林
B. 静滴肝素
C. 静滴低分子右旋糖酐
D. 静滴尿激酶
E. 手术治疗

[单项选择]TIA持续时间通常为（）
A. 12小时内
B. 2小时内
C. 24小时内
D. 30分钟内
E. 48小时内

[简答题]什么是TIA的缺血耐受作用