黎海燕
[摘要] 目的 分析血清CK-MB及肌钙蛋白检测在重症肺炎中的临床应用价值。 方法 选取2013年6~10月本院收治的30例重症肺炎患儿作为观察组,同时选取30例普通肺炎患儿作为对照组,分别测定患儿血清CK-MB和cTnI水平等。 结果 观察组血清cTnI与CK-MB水平明显高于对照组,差异有统计学意义(P<0.05)。观察组cTnI检测阳性率明显高于对照组,差异有统计学意义(P<0.05)。 结论 在重症肺炎中应用血清CK-MB及肌钙蛋白检测,可提高重症肺炎诊断准确率,为患儿提供有效的诊治方法,改善患儿预后情况。
[关键词] 血清CK-MB;肌钙蛋白;重症肺炎
[中图分类号] R563.1 [文献标识码] A [文章编号] 1674-4721(2014)09(c)-0098-03
Clinical study of serum CK-MB and troponin detection in severe pneumonia
LI Hai-yan
Maternal and Child Health Hospital of Jiujiang City in Jiangxi Province,Jiujiang 332000,China
[Abstract] Objective To analyze the clinical application value of the serum CK-MB and troponin detection in severe pneumonia. Methods Thirty children with severe pneumonia admitted to our hospital from June to October 2013 were selected as observation group and meanwhile 30 children with ordinary pneumonia were selected as control group.The children′s serum CK-MB and cTnI level was detected respectively. Results The serum cTnI and CK-MB level of observation group was significantly higher than that of control group respectively,with statistical difference(P<0.05).The positive detection rate of cTnI in observation group was significantly higher than that in control group,with statistical difference(P<0.05). Conclusion The application of serum CK-MB and troponin detection in severe pneumonia can improve the accurate diagnosis rate of severe pneumonia,provide effective diagnosis and treatment method to the children and improve the children′s prognosis.
[Key words] Serum CK-MB;Troponin;Severe pneumonia
婴幼儿重症肺炎大多伴随不同程度的心肌损害,对患儿生命健康造成严重威胁。心肌肌钙蛋白I(cardiac troponin I,cTnI)作为诊断心肌损害的“金指标”[1],具有明显的特异性与敏感性,在出现心肌损伤的情况下,其在血液中出现时间早,持续时间较长,诊断心肌损伤敏感更具有特异性。本院对收治的重症肺炎患儿与普通肺炎患儿分别测定血清CK-MB和cTnI水平等,并分析血清CK-MB及肌钙蛋白检测在重症肺炎中的应用价值。
1 资料与方法
1.1 一般资料
选取2013年6~10月本院收治的30例重症肺炎患儿作为观察组,均符合《诸福棠实用儿科学》[2]重症肺炎的诊断标准,其中男性15例,女性15例;年龄1个月~14岁,平均为(3.32±1.32)岁。同时选取30例普通肺炎患儿作为对照组,其中男性15例,女性15例;年龄2个月~14岁,平均为(3.07±1.19)岁。两组患儿的性别、年龄等比较差异无统计学意义(P>0.05),具有可比性。
1.2 方法
1.2.1 标本采集 两组患儿入院第2天清晨空腹采静脉血2 ml,分别测定血清CK-MB和cTnI水平。
1.2.2 检查方法 采用日本进口全自动生化分析仪测定血清CK-MB。cTnI测定采用美国Lifesign公司的cTnI固相免疫层析分析仪,做快捷性测定,cTnI≥1.0 ng/ml为阳性标准样本。
1.3 统计学处理
采用SPSS 10.0统计软件对数据进行分析和处理,计量资料以x±s表示,采用t检验,计数资料采用χ2检验,以P<0.05为差异有统计学意义。
2 结果
2.1 两组血清cTnI与CK-MB水平的比较
观察组血清cTnI与CK-MB水平明显高于对照组,差异有统计学意义(P<0.05)(表1)。
表1 两组血清cTnI与CK-MB水平的比较(x±s)
与对照组比较,*P<0.05
2.2 两组cTnI检测阳性率的比较
观察组患儿中检测出阳性28例(93.33%),对照组患儿中检测出阳性9例(30.00%),观察组cTnI检测阳性率明显高于对照组,差异有统计学意义(P<0.05)。
3 讨论
重症肺炎是儿童死亡的最主要疾病,目前缺乏明确的实验室指标[3]。在本研究中检测重症肺炎患儿血清CK-MB及cTnI水平,分析其与重症肺炎的内在联系,可作为诊断重症肺炎的实验室指标。肌钙蛋白I、T、C三亚基作为肌钙蛋白的重要组成部分,由于心肌中的I亚基和T亚基比较特殊,不同于其他肌肉组织[4-9],因此,在心肌损伤诊断中应用心肌肌钙蛋白检测方法,具有较高的特异性。另外,cTnI分子量仅为22 kD,在心肌细胞损伤早期可快速释放入血,增高血液浓度[10-14],因此,肌钙蛋白检测可作为心肌损伤的早期诊断指标。
cTnI的主要特征如下[15-16]。①出现时间早:持续在血液中,大多在心肌损伤60 min后开始升高,1 d后达高峰,在7 d内维持较高浓度,大约14 d可恢复正常;②敏感性高:血清cTnI含量随着肌纤维损伤程度严重化而升高;③特异性明显:血清CK-MB活性变化对判断心肌损害具有明显的特异性,但是,在骨骼肌中可发现CK-MB,不具有完全特异性,且CK-MB在血液中持续时间短,一般在6 h开始升高,1 d内达高峰,1周内恢复正常。
相关文献表明,严重肺炎可并发心力衰竭[17]。本研究表明,观察组患儿血清cTnI与CK-MB水平分别为(3.84±1.73) ng/ml、(66.74±20.81) U/L明显高于对照组的(1.09±0.62) ng/ml、(12.84±6.97)U/L(P<0.05);观察组患儿cTnI检测阳性率为93.33%,明显高于对照组的30.00%(P<0.05),表明cTnI检测具有明显的敏感性、特异性和可用度,可正确判断小儿重症肺炎的病情进展,不断改善患儿预后情况。重症肺炎患儿大多存在心肌损害,cTnI可作为诊断小儿重症肺炎早期心肌受损的重要指标,必须在早期为患者提供合适的治疗方法,才能预防心力衰竭的发生。同时,说明可能由于感染、缺氧等因素引起重症肺炎患儿cTnI异常,并出现不同程度的心肌损害,因此,在临床处理中必须加强对严重肺炎患儿的早期诊治。
许志有等[18]对61例合并心肌损伤的重症肺炎患儿及57例未合并心肌损伤的重症肺炎患儿进行检测血清cTnI和CK-MB水平,发现重症肺炎患儿心肌损伤组血清cTnI、CK-MB水平明显高于非心肌损伤组;cTnI诊断重症肺炎合并心肌损伤的敏感性高于CK-MB(P<0.05),可见,血清cTnI和CK-MB水平可作为重症肺炎患儿心肌损伤监测的重要指标,且cTnI水平在重症肺炎合并心肌损伤的临床诊断中具有不可或缺的作用。
综上所述,血清CK-MB及cTnI水平检测可作为诊断重症肺炎的实验室指标,有利于准确判断重症肺炎早期病情,合理评估患儿病情进展,对患儿预后情况具有重要的临床意义和实用价值。同时,充分利用各项医疗资源,从根本上提高对患儿重症肺炎的救治能力,从而吸引更多患者,实现经济效益与社会效益的最优化。
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(收稿日期:2014-07-03 本文编辑:李亚聪)
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[11] van der Sluis PC,Verhage RJ,van der Horst S,et al.A new clinical scoring system to define pneumonia following esophagectomy for cancer[J].Dig Surg,2014,31(2):108-116.
[12] Zhou FJ,Zhou CY,Tian YJ,et al.Diagnostic value of analysis of H-FABP,NT-proBNP,and cTnI in heart function in children with congenital heart disease and pneumonia[J].Eur Rev Med Pharmacol Sci,2014,18(10):1513-1516.
[13] Matovu F,Nanyiti A,Rutebemberwa E.Household health care-seeking costs:experiences from a randomized,controlled trial of community-based malaria and pneumonia treatment among under-fives in eastern Uganda[J].Malar J,2014,13(1):222.
[14] 朱志红,唐基忠.抗生素降阶梯治疗小儿重症肺炎的效果观察[J].中国当代医药,2014,21(10):85-86.
[15] Gharib B,Almasi M,Esmaeili S,et al.A neonate with indurate dermal papules and nodules and pneumonia:a case report[J].Acta Med Iran,2014,52(4):323-326.
[16] Doi A,Iwata K,Takegawa H,et al.Community-acquired pneumonia caused by carbapenem-resistant Streptococcus pneumoniae:re-examining its prevention and treatment[J].Int J Gen Med,2014,7(21):253-257.
[17] Einvik G,R?覬sj?覬 H,Randby A,et al.Severity of obstructive sleep apnea is associated with cardiac troponin I concentrations in a community-based sample:data from the Akershus sleep apnea project[J].Sleep,2014,37(6):1111-1116.
[18] 许志有,董战玲.血清cTnI和CK-MB在重症肺炎患儿心肌损伤早期诊断中的价值[J].现代预防医学,2011, 24(38):5073-5074.
(收稿日期:2014-07-03 本文编辑:李亚聪)
[10] 罗敏,邓瑜琼,刘沧海,等.儿童重症肺炎支原体肺炎18例临床诊断和治疗[J].中国当代医药,2014,21(1):182-184.
[11] van der Sluis PC,Verhage RJ,van der Horst S,et al.A new clinical scoring system to define pneumonia following esophagectomy for cancer[J].Dig Surg,2014,31(2):108-116.
[12] Zhou FJ,Zhou CY,Tian YJ,et al.Diagnostic value of analysis of H-FABP,NT-proBNP,and cTnI in heart function in children with congenital heart disease and pneumonia[J].Eur Rev Med Pharmacol Sci,2014,18(10):1513-1516.
[13] Matovu F,Nanyiti A,Rutebemberwa E.Household health care-seeking costs:experiences from a randomized,controlled trial of community-based malaria and pneumonia treatment among under-fives in eastern Uganda[J].Malar J,2014,13(1):222.
[14] 朱志红,唐基忠.抗生素降阶梯治疗小儿重症肺炎的效果观察[J].中国当代医药,2014,21(10):85-86.
[15] Gharib B,Almasi M,Esmaeili S,et al.A neonate with indurate dermal papules and nodules and pneumonia:a case report[J].Acta Med Iran,2014,52(4):323-326.
[16] Doi A,Iwata K,Takegawa H,et al.Community-acquired pneumonia caused by carbapenem-resistant Streptococcus pneumoniae:re-examining its prevention and treatment[J].Int J Gen Med,2014,7(21):253-257.
[17] Einvik G,R?覬sj?覬 H,Randby A,et al.Severity of obstructive sleep apnea is associated with cardiac troponin I concentrations in a community-based sample:data from the Akershus sleep apnea project[J].Sleep,2014,37(6):1111-1116.
[18] 许志有,董战玲.血清cTnI和CK-MB在重症肺炎患儿心肌损伤早期诊断中的价值[J].现代预防医学,2011, 24(38):5073-5074.
(收稿日期:2014-07-03 本文编辑:李亚聪)