作者star7799 (star7799)
看板medstudent
标题[申覆] 医学(二) 14
时间Tue Aug 3 22:28:43 2010
下列关於一氧化碳中毒的叙述, 何者错误?
答案是A
(A) 中毒的症状为头痛, 恶心, 且因缺氧故刺激化学接受器(chemoreceptor)
使呼吸加快加深
想请问大家 A 为什麽错?
谢谢
美国CDC上有说: The symptoms and signs of carbon monoxide poisoning are variable and
nonspecific. The most common symptoms of CO poisoning are headache,
dizziness, weakness, nausea, vomiting, chest pain, and altered mental status.
The clinical presentation of CO poisoning is the result of its underlying
systemic toxicity. Its effects are caused not only by impaired oxygen
delivery but also by disrupting oxygen utilization and respiration at the
cellular level, particularly in high-oxygen demand organs (i.e., heart and
brain).
Symptoms of severe CO poisoning include malaise, shortness of breath,
headache, nausea, chest pain, irritability, ataxia, altered mental status,
other neurologic symptoms, loss of consciousness, coma, and death; signs
include tachycardia, tachypnea, hypotension, various neurologic findings
including impaired memory, cognitive and sensory disturbances; metabolic
acidosis, arrhythmias, myocardial ischemia or infarction, and noncardiogenic
pulmonary edema, although any organ system might be involved.
严重的话会tachypnea但不知道为什麽?没说生理的部分
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◆ From: 59.126.27.226
1F：推 bruce75:我猜应该是加快的话会变浅??但还要查证 08/03 22:29
2F：→ alexstag:化学受器应该是接受H+ 之类的东西吧...氧分压好像不算 08/03 22:31
3F：→ fangtu:会有前面的症状 但是不会有後面的接受器之刺激 08/03 22:35
4F：推 pongchu:我是想到烧炭自杀的人好像不会那样呼吸加快加深XDD 08/03 22:38
5F：→ NaCl:可是一氧化碳中毒 氧分压有变吗? 08/03 22:45
6F：→ moon84510:Chemoreceptors in the carotid bodies and medulla are 08/03 22:46
7F：→ moon84510:activated by hypoxemia, acute hypercapnia, and acide 08/03 22:46
8F：→ moon84510:mia.. 08/03 22:47
9F：→ moon84510:一氧化碳中毒应该算hypoxemia吧 08/03 22:48
10F：推 genius66:印象中chemoreceptor是侦测氧分压@@ 08/03 22:54
11F：→ moon84510:这题我也写错..该不会是快而深出了问题xXD 08/03 22:57
12F：→ genius66:我觉得有可能是快而浅耶..... 08/03 23:08
13F：推 louissuper:烧炭会很想睡觉 应该不会加快XD 不过原理就不知道== 08/03 23:09
14F：→ staylast:CO中毒氧分压不会变吧 08/03 23:11
15F：→ genius66:氧分压不会变啊 08/03 23:14
16F：推 davidwu10001:我是觉得一氧化碳中毒不会头痛恶心所以就选了@@ 08/03 23:35
17F：推 opass10:因为其他都对所以选A =w= 08/04 00:01
※ 编辑: star7799 来自: 59.126.27.226 (08/04 00:06)
18F：推 jesefen:虽然我选A,但是我觉得题目单讲"缺氧"太笼统.因缺氧造成体 08/04 13:54
19F：→ jesefen:内H+上升再去刺激化学受器应该也可以吧? 08/04 13:55
20F：→ jesefen:所以我也猜是"又快又深"错了...不过不知道错在哪= =" 08/04 13:56