问题 单项选择题

患儿8个月,于10月份住院,发热3天,呕吐、腹泻2天入院,大便每日 10余次,水样便,无腥味,尿少。查体:轻度脱水,心肺(-),大便镜检,WBC 0~1/HP,患儿最恰当的诊断为

A.生理性腹泻
B.致病性大肠杆菌肠炎
C.轮状病毒性肠炎
D.金黄色葡萄球菌肠炎
E.真菌性肠炎

答案

参考答案:C

解析:①患儿发病年龄为8个月婴儿;②秋季(10月)发病;③先有发热,继而呕吐,腹泻,典型水样便,无腥味,次数增多;④查体:轻度脱水,大便镜检,WBC 0~1/HP,诊断为轮状病毒性肠炎。鉴别诊断:①金黄色葡萄球菌肠炎,全身中毒症状重,大便呈海水样,有粘液。②致病性大肠杆菌肠炎,夏季发病,大便粘液样,大便镜检, WBC多数/HP。③真菌性肠炎,D腔常有真菌感染,大便呈豆腐渣样。④生理性腹泻,见于6个月以下婴儿,大便次数增多,量少,生长发育正常,无脱水。

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Exercising to music pumps up brain power


If music makes you smarter, and exercise helps brain function, can exercising to music really boost brainpower Some researchers said it can. Volunteers who listened to Vivaldi’s "Four Seasons" while working out on a treadmill did much better on a test of (1) ability than when they exercised without music, a team (2) Ohio State University found.
"Evidence suggests that exercise improves the (3) performance of people with coronary artery (4) ," said psychologist Charles Emery, who led the study.
"And listening to music is (5) to enhance brainpower. We wanted to put the two results together," Emery (6) in a statement.
Writing in the latest issue of the journal Heart & Lung, Emery and (7) said they studied 33 men and women taking (8) in a cardiac rehabilitation program after having bypass (9) , angioplasty or other procedures to treat clogged arteries.
The (10) said they felt better emotionally and mentally after working out (11) or without the music. But their improvement on the (12) fluency test doubled after listening to music on the treadmills.
"Exercise seems to (13) positive changes in the nervous system, and these changes may have a (14) effect on cognitive ability," Emery said.
"Listening to music may (15) cognitive function through different pathways in the brain. The combination of music (16) exercise may stimulate and increase cognitive arousal (17) helping to organize cognitive output."
Emery said he now wanted to (18) people using music of their own choice. "We used the ’Four Seasons’ because of its (19) tempo and positive effects on medical patients in previous (20) ," Emery said. "But given the range of music preferences among patients, it’s especially important to evaluate the influence of other types of music on cognitive outcomes.\