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2027临床检验职称考试,历年真题精炼【26.10.9】

  • 2026-10-10 06:31:51
2027临床检验职称考试,历年真题精炼【26.10.9】

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来源:检验人生

(共用题干)

患儿,10个月。轻咳伴发热半天,晚上呕吐4次,不久频泻水样便,初黄色后转白,量多黏液少,无腥臭,尿极少,于10月底就诊。体温39℃,面色苍白。前囟眼窝凹陷,哭泪少,咽充血,心肺无异常,腹稍胀。皮肤弹性减退。

1).该患儿最可能的临床诊断是( )。

A.致病性大肠杆菌肠炎

B.产毒性大肠杆菌肠炎

C.轮状病毒肠炎

D.诺沃克病毒肠炎

E.侵袭性大肠杆菌肠炎

【答案】C

【解析】

轮状病毒感染腹泻:多发于6~24个月的小儿,以秋季发病为主,起病急,伴有发热,上呼吸道感染,大便呈黄色或淡黄色,水样或蛋花汤样,无腥臭。

2).下述处理不是必需的是( )。

A.口服补液盐(ORS)

B.禁食

C.动脉血气分析

D.血钠钾氯测定

E.大便镜检和培养

【答案】B

【解析】

小儿腹泻现多主张继续饮食,不仅可以满足生理需要,补充腹泻的消耗,而且可以阻止双糖酶活性减低,促进肠黏膜的再生修复,缩短病程。

(共用题干)

患者男性,20岁。于4天前突然寒战发热,2天后,体温高峰达39℃,查体可见颜面潮红,结膜充血,腹股沟可见焦痂形成,腹股沟淋巴结肿大,变形杆菌Oxk凝集的反应1:320。

3).该患者最可能的诊断是( )。

A.钩端螺旋体病

B.斑疹伤寒

C.恙虫病

D.淋巴瘤

E.流行性出血热

【答案】C

【解析】

恙虫病又名丛林斑疹伤寒,是由恙虫病立克次体引起的急性传染病,系一种自然疫源性疾病,啮齿类为主要传染源,恙螨幼虫为传播媒介。病患者多有野外作业史,潜伏期5~20天。临床表现多样、复杂,合并症多,常可导致多脏器损害。本病起病急,有高热、毒血症、皮疹、焦痂和淋巴结肿大等特征性临床表现。严重者可因心肺肾衰竭而危及生命。患者突然起病、发热、皮疹、腹股沟淋巴结肿大和焦痂,符合恙虫病的临床表现,变形杆菌Oxk凝集的反应1:320更支持该诊断。

4).对该患者最有效的药物是( )。

A.环丙沙星

B.氯霉素

C.复方新诺明

D.庆大霉素

E.青霉素

【答案】B

【解析】

本题考查恙虫病的治疗。氯霉素、四霉素和红霉素对恙虫病有良好疗效。

5).对本病例有确诊依据的检查是( )。

A.外斐反应

B.病人血接种小白鼠腹腔分离病原体

C.肿大淋巴结活检

D.皮疹处皮肤活检

E.焦痂渗出液作培养

【答案】B

【解析】

病人血接种小白鼠腹腔后,第7~9天发病,取腹水涂片,可在单核细胞胞质中发现恙虫病立克次体,可确诊。

(共用题干)

患者男性,21岁。咳嗽伴午后低热一月余。体检:体温37.9℃,呼吸音较粗,叩诊左肺清音界上移。实验室检查:WBC6.2×109/L,ESR96mm/h。X线检查显示左侧肋隔角消失。该患者无吸烟史。

6).该患者最可能的疾瘸是( )。

A.肺结核伴左侧胸腔积液

B.肺癌伴左侧胸腔积液

C.大叶性肺炎伴左侧胸腔积液

D.左侧肺阻塞伴左侧胸腔积液

E.肺脓肿伴左侧胸腔积液

【答案】A

【解析】

大叶性肺炎往往高热,WBC明显升高;体温,呼吸音较粗,WBC6.2×109/L,ESR96mm/h,不太支持肺阻塞和肺脓肿的诊断;年龄和无吸烟史不太支持肺癌的诊断;而症状,体征,实验室检查等都较支持肺结核的诊断。

7).下列胸水酶学检查哪一项对了解胸水性质更有帮助?( )

A.AST

B.CK

C.GGT

D.LD

E.ALP

【答案】D

【解析】

胸腹水中LD含量常用来鉴剐漏出液或渗出液,若胸水LD/血清LD大于0.6,腹水LD/血清LD大于0.4为渗出液,反之为漏出液。

8).LD酶是由几种不同亚基组成的( )。

A.2种

B.3种

C.4种

D.5种

E.6种

【答案】A

【解析】

LD由H亚基和M亚基两种亚基组成的。

9).LD酶分子是由几个亚基组成的( )。

A.2个

B.3个

C.4个

D.5个

E.6个

【答案】C

【解析】

LD由H亚基和M亚基组成的四聚体。

10).连续监测法测定LD,常通过监测哪处波长吸光度的变化来计算酶的活性( )。

A.260nm

B.280nm

C.340nm

D.410nm

E.620nm

【答案】C

【解析】

LD催化乳酸生成丙酮酸和H+,H+与NAD-结合,从而引起340nm吸光度改变,单位时间吸光度改变量与LD的活力相关。

11).连续监测法测定活性时,血清用量10μl,底物量350μl光径1cm,NADH在340nm的摩尔吸光系数为6300,计算K值为( )。

A.3376

B.4127

C.4920

D.5714

E.6508

【答案】D

【解析】

K值计算公式为:K=(V反应总×10^6)/(ε×V样品×L光径)=(10+350)×10^6/(6300×10×1)=5714。

END

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  1. CONNECT:[ UseTime:0.000673s ] mysql:host=172.18.0.4;port=3306;dbname=www_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000906s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000464s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000405s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000524s ]
  6. SELECT * FROM `set` [ RunTime:0.000313s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000695s ]
  8. SELECT * FROM `article` WHERE `id` = 521313 LIMIT 1 [ RunTime:0.000420s ]
  9. UPDATE `article` SET `lasttime` = 1791592242 WHERE `id` = 521313 [ RunTime:0.001181s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000333s ]
  11. SELECT * FROM `article` WHERE `id` < 521313 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000422s ]
  12. SELECT * FROM `article` WHERE `id` > 521313 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000320s ]
  13. SELECT * FROM `article` WHERE `id` < 521313 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000539s ]
  14. SELECT * FROM `article` WHERE `id` < 521313 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000689s ]
  15. SELECT * FROM `article` WHERE `id` < 521313 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000640s ]
0.090317s