心肌酶谱测定对新生儿缺氧缺血性脑病患者心肌损害的诊断价值

目的探讨心肌酶谱测定对新生儿缺氧缺血性脑病(HIE)患者心肌损害的诊断价值。方法将150例HIE患儿分轻、中、重度组与52例正常新生儿对照,测定血浆中天门冬氨酸氨基转移酶(AST)、乳酸脱氢酶(LDH)、肌酸激酶(CK)、肌酸激酶同工酶(CK-MB)和α-羟丁酸脱氢酶(α-HBDH)的活性,常规心电图检查,并进行统计分析。结果HIE时血浆AST、LDH、CK、α-HBDH活性随着病情的加重而相应升高,尤以CK、CK-MB升高明显,与临床分度呈正相关。重度组较正常对照组明显升高,差异有显著性(P<0.01);HIE患儿心电图检查异常74例(50%),其中轻度组13例(29%),中度组28例(50%),重度组33例(69%)。结论监测患儿心肌酶谱的变化,能较好地协助临床早期诊断HIE时有无心肌损伤及损伤程度,对判断病情、估计预后具有重要的临床意义。     

新生儿缺氧缺血性脑病心肌酶谱的变化及临床意义

目的探讨新生儿缺氧缺血性脑病(HIE)时血浆心肌酶谱的变化及临床意义。方法将51例HIE患儿分轻、中、重度绍及正常对照组,测定血清中天门冬氨酸氨基转移酶、乳酸脱氢酶、肌酸激酶、肌酸激酶同工酶和α-羟丁酸脱氢酶的活性。结果HIE时血清AST、LDH、CK、α-HBDH的活性随着病情的加重而升高,尤以CK、CK-MB升高明显,与临床分度呈正相关。重、中度组较正常对照组明显升高,差异有显著性(P<0.01):轻度组与正常对照组比较差异均无显著性。治疗前、后心肌酶谱各项指标差异显著(P<0.05)。结论心肌酶谐的检测可作为HIE临床分度的指标之一。监测患儿心肌酶谱的变化,能较好地协助临床早期诊断HIE时有无心肌损伤及损伤程度,对判断病情、估计预后具有重要的,临床意义。     

婴幼儿肺炎血清心肌酶的测定及意义

目的 探讨婴幼儿肺炎血清心肌酶的变化及意义。 方法 应用速率法测定30例患儿血清天冬氨酸转移酶 (AST)、肌酸激酶 (CK)、肌酸激酶同功酶 (CK -MB)、乳酸脱氢酶 (LDH)的水平 ,住院7d后复查 ,观察血清心肌酶的水平与病情的关系 ,以同年龄正常小儿作对照。结果 婴幼儿肺炎组急性期血清心肌酶 (AST、CK、CK -MB、LDH)水平显著高于对照组 ,均P<0.01。恢复期血清心肌酶水平下降 ,但仍高于对照组 ,两组相比有显著性差异 ,均P<0.05。婴幼儿肺炎急性期经皮测血氧饱和度与正常儿相比无显著差异。结论 婴幼儿肺炎患儿血清心肌酶升高与病情相关 ,提示心肌损害的客观存在 ,缺氧可能不是导致心肌损害的主要原因     

冠状动脉架桥术患者围术期心肌酶的动态变化

目的 :连续对 14例择期手术的冠状动脉架桥术 (CABG)患者围术期心肌酶的变化进行了动态观察 ,旨在更全面了解心肌在术中受缺血影响的程度和恢复的情况 ,进一步揭示CABG患者心肌酶围术期变化的规律 ,为临床治疗提供依据。方法 :14例CABG患者术前 1d ,术后 1,3,5 ,8d晨分别取静脉血 ,测定血清谷草转氨酶 (AST) ,磷酸肌酸激酶及同功酶MB(CK ,CK-MB) ,乳酸脱氢酶及同功酶 1(LDH ,LDH - 1)。结果 :择期手术的CABG患者术前 5种心肌酶均在正常范围 ,术后 1d分别升高到术前的 3- 11倍 (P <0 .0 5 ) ;术后 3d均有不同程度的恢复 ,CK -MB已恢复到正常范围 ,AST已与术前值无明显差别虽说它仍高于正常值 ,其他 3种酶仍显著高于术前水平 (P <0 .0 5 ) ;术后 5d继续恢复 ,LDH和LDH - 1仍高于术前水平 (P <0 .0 5 ) ,CK也已恢复到正常水平 ,AST虽仍略高于正常水平 ,但是其与术前测定值相比无差别 (P >0 .0 5 ) ;术后 8dAST也恢复到正常水平 ,但LDH与LDH - 1仍未恢复正常 (P <0 .0 5 )。结论 :择期手术的CABG患者术前 5种心肌酶均在正常范围 ;这些心肌酶的释放术后 1d达最高峰 ,CK -MB恢复最快 ,CK与AST次之 ,LDH和LDH - 1最慢 ,术后 8d仍明显高于术前水平 ;要判断心肌损伤的恢复应以LDH和LDH - 1的恢复为标准。     

急性脑血管病患者心肌酶谱改变及其临床意义

目的　探讨急性脑血管病 (acutecerebrovasculardisease ,ACVD)患者血清心肌酶谱改变及其临床意义。方法　于发病 7天内检测 79例ACVD患者血清心肌酶谱 ,即天门冬氨酸氨基转移酶 (AST)、乳酸脱氢酶 (LDH)、α 羟丁酸脱氢酶 (α HBDH)、肌酸激酶 (CK)和心肌型肌酸激酶同功酶 (CK MB) ,同时进行神经功能缺损程度评分 (SSS) ,与32例对照组对比分析。结果　除CK MB外 ,脑出血 (ICH)组和脑梗死 (CI)组的血清心肌酶谱均高于对照组 (P <0 .0 5 ) ;ICH组和CI组的血清心肌酶谱比较无统计学意义 (P >0 .0 5 ) ;有颞叶损害组心肌酶谱高于无颞叶损害组 (P<0 .0 5 ) ;LDH水平与SSS评分呈正相关 (rs=0 .30 3,P <0 .0 1)。结论　ACVD患者存在明显的心肌酶谱改变 ,检测其血清心肌酶谱有助于病情轻重及预后判断     

窒息后新生儿52例血心肌酶谱变化的临床分析

目的探讨新生儿窒息后血清心肌酶谱的变化。方法对52例窒息新生儿心肌损害患者（心肌损害组）与52例无窒息新生儿（对照组）血清门冬氨酸氨基转移酶（AST）、肌酸磷酸激酶（CK）、肌酸磷酸激酶同工酶（CK—MB）、乳酸脱氢酸（LDH）及α-羟丁酸脱氢酶（α—HBDH）进行对照检测。结果测定的血清AST、CK、LDH及α-HBDH值，心肌损害组较对照组稍高，差异无统计学意义；但血清CK—MB值心肌损害组较对照组高，差异具有显著性（P〈0．05）。新生儿窒息时心肌酶谱中CK—MB明显增高，治疗1周后CK—MB显著下降，治疗前、后差异有非常显著性。结论心肌酶谱定量测定可作为新生儿窒息后心肌损害的早期、灵敏、特异的重要诊断指标。     

新生儿窒息后血清心肌酶谱的变化及意义

目的观察心肌酶谱在窒息后新生儿缺氧性心肌损伤中的变化及其临床意义。方法选择窒息新生儿40例,按照窒息程度分为2组分别于生后24h内和生后第3d、第7d检测血清肌酸激酶(CK)、肌酸激酶心型同工酶(CK-MB)、乳酸脱氢酶(LDH)、α-羟丁酸脱氢酶(α-HBDH),并将同期住院的非缺氧新生儿20例,作为对照组进行比较分析。结果(1)轻度窒息组和重度窒息组患儿,出生后24h内及生后第3d的CK、CK-MB、LDH、α-HBDH均明显升高,与对照组有显著性意义(P<0.01);重度窒息组与轻度窒息组之间CK、CK-MB、LDH和α-HBDH亦有显著性意义(P均<0.01);(2)24小时内重度窒息组与轻度窒息组CK-MB升高最为明显;生后第3天,CK和LDH、α-HBDH逐渐达高峰;第7d轻度窒息组CK、CK。MB、α-HBDH呈下降趋势,逐渐降至正常水平,而LDH仍呈升高水平,与对照组比较有显著差异(P<0.05);结论(1)新生儿窒息早期即有心肌酶的改变,表现缺氧程度与心肌酶水平升高呈正相关;(2)缺氧性心肌损害与新生儿窒息程度有相关性;(3)心肌酶谱检测对进一步诊断新生儿窒息后心肌损害有重要价值;(4)新生...     

急性氟乙酰胺中毒患者血清心肌酶水平的变化及意义

目的 :探讨心肌酶水平在急性氟乙酰胺中毒患者血清中的变化及临床意义。方法 :对 44例急性氟乙酰胺 (CK ,CK -MB ,AST ,LDH ,α HBDH)中毒者进行连续动态观察。结果 :急性氟乙酰胺中毒患者入院时的心肌酶明显高于对照组 (P <0 0 1) ,中毒后第 1～ 7d血清心肌酶均明显升高 (P <0 0 1) ,第 3～ 7d达到高峰。入院时中、重度中毒患者血清心肌酶明显高于轻度中毒患者 (P <0 0 1) ,重度中毒组与中度中毒组差异也有显著性 (P <0 0 1)。结论 :氟乙酰胺中毒确可引起心肌损害 ,且中毒程度越重 ,心肌酶升高越明显。心肌酶可作为一个判断氟乙酰胺中毒病情变化、预后和指导治疗的重要临床指标     

常规心肌酶谱标记物在钝性胸部创伤后心肌挫伤的早期诊断价值

目的　探讨常规心肌酶谱标记物在钝性胸部创伤合并心肌挫伤早期的临床价值。方法　回顾性将钝性胸部创伤患者 14 2例依据心肌挫伤临床诊断标准分为钝性心肌挫伤组 (Ⅰ组 )和非钝性心肌挫伤组 (Ⅱ组 ) ,对入选病例 3d内心电图、超声心动图及创伤后 4 8h内心肌酶结果进行分析。结果　①钝性心肌挫伤 4 9例 ,占总病例数的 34 5 % ;②心肌挫伤以较高的创伤评分、胸部多部位损伤、肋骨骨折 (木连枷胸 )发生率高、心电图及超声心动图异常表现多为特点 ,组间比较差异显著 ;③CK≥ 10 0 0IU/L或CK -MB≥ 4 0IU/L是较理想检测指标 ,两者联合诊断可提高敏感性。结论　采用心肌酶谱联合指标早期诊断心肌挫伤可提高诊断的敏感性 ,结合病史、心电图、超声波结果可提高诊断的准确性     

急性脑卒中后心电图及心肌酶谱和肌钙蛋白-T的变化

目的　观察急性脑卒中患者心电图、心肌酶谱和心肌肌钙蛋白 T(cTnT)的变化情况。方法　 136例急性脑卒中患者入院后做心电图 ,对其中有异常者再行心肌酶谱和cTnT的检测 ,并动态观察。结果　 136例急性脑卒中患者中 ,10 9例有心电图异常 (80 .1% ) ,出血性卒中的心电图异常率高于缺血性卒中组 (P <0 .0 5 ) ;10 9例心电图异常的患者中 ,有心肌酶谱改变的 6 5例 ,出血性卒中组心肌酶谱水平较缺血性卒中组高 (P <0 .0 5 ) ;10 9例心电图异常患者中cTnT阳性者为 5 5例 ,其中出血性卒中组有 2 6例 ,缺血性卒中组有 2 9例 ,两组比较差异无显著意义 ;治疗后 ,部分患者的心电图、心肌酶谱、cTnT均有不同程度的恢复。结论　急性脑卒中患者应加强心脏功能监护 ,监测心电图、心肌酶谱和cTnT ,使可逆性的心肌损害得到恢复     

血清心肌肌钙蛋白-I、肌酸激酶同工酶对新生儿缺氧缺血性脑病心肌损伤的诊断价值

目的 探讨血清心肌肌钙蛋白I（CTn-I）、肌酸激酶（CK）、肌酸激酶同工酶（CK-MB）及CK-MB／CK对新生儿缺氧缺血性脑病（HIE）患儿心肌损伤的诊断价值。方法 对2001年8月至2003年12月78例HIE患儿与对照组同期入住新生儿病房26例无缺氧性脑痛的患儿于出生后18～24h取血，分别用快速固相免疫层析法、NAC-免疫抑制法、NAC法测定血清CTn-I、CK、CK-MB并计算CK-MB／CK值。结果 对照组、轻、中、重HIE四组患者间血清CTn-I、CK、CK-MB有显著性差异（P〈0．05）。其中3例重度HIE伴阵发性室性心动过速，CTn-I〉125ng／L；而CK-MB虽有升高，但无明显差异；CK-MB／CK值在各组中无明显差异。结论 重视对HIE患儿心脏功能的监测与治疗，对改善患儿的预后具有非常重要的意义，在评价HIE患儿心肌损伤时，CTn-I是比CK-MB及CK更敏感、更具有特异性的指标，所以CK-MB／CK不宜作为HIE患儿心肌损伤的生化指标。     

川崎病患儿血清心肌肌钙蛋白Ⅰ变化及临床意义

目的 :探讨心肌肌钙蛋白Ⅰ (cTnI)在川崎病急性期心肌损伤的诊断价值。方法 :检测川崎病 (KD)组 (n =5 6 )及对照组(n =2 0 )患儿血清cTnI、肌酸激酶 (CK)、肌酸激酶同功酶 (CK -MB)、乳酸脱氢酶 (LDH)浓度。结果 :KD组与对照组血清CK、LDH浓度无显著差别 (P >0 .0 5 ) ,而血清cTnI、CK -MB浓度明显高于对照组水平 (P <0 .0 0 1)。在诊断KD患儿急性期心肌损伤上cTnI优于CK -MB(P <0 .0 5 )。结论 :cTnI与CK -MB对KD患儿急性期心肌损伤有诊断价值 ;与CK -MB比较 ,cTnI具有高度特异性、灵敏度 ,指导早期IVIG治疗 ,从而减少KD患儿心血管并发症的发生。     

缺氧缺血性脑病新生儿血清肌钙蛋白Ⅰ与心肌酶水平变化及临床意义

目的研究缺氧缺血性脑病(HIE)新生儿血清肌钙蛋白I(cTnI)与天冬氨酸氨基转移酶(AST)、乳酸脱氢酶(LDH)、肌酸激酶(CK)和肌酸激酶同工酶(CK-MB)水平变化及临床意义。方法对114例HIE患儿(轻度HIE组38例、中度HIE组40例、重度HIE组36例)血清cTnI与AST、LDH、CK、CK-MB水平进行检测,并与正常对照组的30例健康新生儿进行比较分析。结果 HIE组血清cTnI、AST、LDH、CK以及CK-MB水平均显著高于正常对照组(P<0.05);轻、中度HIE组血清cTnI与AST、LDH、CK、CK-MB水平均显著低于重度HIE组,中度HIE组血清cTnI与AST、LDH、CK、CK-MB水平均均显著高于轻度HIE组,差异亦均具有统计学意义(P<0.05);HIE患儿cTnI与AST、LDH、CK、CK-MB水平与病情呈正性显著正相关(P<0.05)。结论检测HIE患儿血清cTnI与AST、LDH、CK、CK-MB水平对患儿病情判断及治疗具有重要的临床意义。     

Myoglobin,creatine kinase MB isoforms and creatine kinase MB mass in early diagnosis of myocardial infarction in patients with acute chest pain

OBJECTIVES: Measurements of myoglobin and creatine kinase (CK)-MB isoforms have been suggested to be sensitive tests for the early diagnosis of myocardial infarction (MI). We have investigated the utility of myoglobin, creatine kinase (CK)-MB isoforms and creatine kinase MB mass (CK-MBm) in early diagnosis of MI using cardiac troponin T (cTnT) positivity as a reference. DESIGN AND METHODS: The study population comprised 440 patients who had had chest pain for less than 12 h. Patients were divided into cTnT negative (cTnT-) or cTnT positive (cTnT+) patients (concentration of cTnT >0.1 microg/L at two different time points during 72 h). RESULTS: At the time of admission to the emergency department receiver operating characteristics (ROC) curves of CK-MB isoforms and CK-MBm were not better than that of myoglobin. Six hours after admission CK-MB isoforms and CK-MBm provided statistically significantly larger areas under the curve (AUC) than myoglobin (p < 0.01). When ROC curves were related to the onset of chest pain (< 3 h, 3-6 h, and > 6 h) there were no significant differences between the cardiac markers studied. CONCLUSIONS: According to the present findings, CK-MB isoforms or myoglobin offer no advantage over CK-MBm as early markers of myocardial infarction.     

Diagnosis of perioperative myocardial infarction by considering relationship of postoperative electrocardiogram changes and enzyme increases after coronary bypass operation

We report the results of enzyme determinations in sera from 88 patients, 65 of whom showed inconspicuous reconvalescence, 14 who had myocardial infarction within 24 h (MI 1) after bypass surgery, and nine with myocardial infarction between 24 and 48 h postoperatively (MI 2). We wanted to determine whether the consequent measurement of activities of total creatine kinase (CK), CK isoenzyme MB (CK-MB), lactate dehydrogenase, alpha-hydroxybutyrate dehydrogenase, and aspartate aminotransferase, conducted as a part of routine laboratory diagnostics, provided meaningful information for diagnosing infarcts besides that obtained from the electrocardiogram. The postoperative mean values of the enzyme activities in blood were significantly different among the three groups; however, only a combined evaluation of CK and CK-MB by means of a discriminant analysis allowed the prediction of MI (sensitivity: MI 1 = 98.5%, MI 2 = 95.4%; specificity: MI 1 = 71.4%, MI 2 = 81.8%). CK greater than 600 U/L or CK-MB greater than 45 U/L supports the diagnosis of acute MI.     

血清心肌酶检测在新生儿窒息诊断中的临床意义

目的 探讨心肌酶检测在新生儿窒息诊断中的应用价值.方法 选取陕西省人民医院收治的82例窒息新生儿为研究对象,根据Apgar评分将其分为Apgar 4-7分为轻度组59例,Apgar＜3分为重度组23例,抽取入院后12 h内及治疗后第3天静脉血,并选取30例同期住院无缺氧的新生儿为对照组,采用日立7170用速率法检测血清天门冬氨酸氨基转移酶（AST）、肌酸激酶（CK）、肌酸激酶同工酶（CK-MB）、乳酸脱氢酶（LDH）和α-羟酸脱氢酶（HBDH）.结果 重度窒息组AST,CK,CK-MB,LDH和HBDH水平（170.1±32.3 U/L,1 264.5±207.2 U/L,214.5±86.1 U/L,918.5±239.5U/L和747.3±172.5 U/L）高于轻度度窒息组（72.7±20.9 U/L,460.4±164.1 U/L,70.1±26.6 U/L,402.7±107.5 U/L和349.6±122.1 U/L,t值=7.81,15.87,9.95,11.59和10.07,P均＜0.01）高于正常组（33.1±11.8 U/L,201.1±44.8 U/L,23.2±6.5 U/L,181.2±34.9 U/L和198.1±35.4 U/L,t值=5.48,4.97,5.46,6.43和3.89,P均＜0.01）,治疗3天后心肌酶水平大幅回落,与治疗前比较差异有统计学意义（t=1.73,P＜0.05）.结论 血清心肌酶水平能较及时地反映窒息新生儿缺氧性心肌损伤的程度,及早测定其水平变化,对判断病情,指导治疗有重要临床意义.     

150例儿童肺炎心肌酶谱的临床分析与中医探讨

目的:通过中西医2方面分析150例支气管肺炎患儿心肌酶谱的变化规律,探讨中医思路,以指导中西医临床。方法:对150例支气管肺炎患儿进行心肌酶谱检测,肌酸激酶(CK)、肌酸激酶同工酶(CK-MB)、乳酸脱氢酶(LDH)及谷草转氨酶(AST),按年龄、体温及病情分组,进行分析支气管肺炎患儿心肌酶谱的变化规律。结果:不同年龄组肺炎患儿血清CK-MB均数比较,经统计学处理有统计学意义,不同年龄组患儿的CK-MB增高比率,经统计学处理有统计学意义,不同体温组患儿CK-MB增高比率,经统计学处理无统计学意义,不同病情组患儿CK-MB增高数比率,经统计学处理有统计学意义。结论:支气管肺炎患儿多数伴有心肌损害,与年龄、病情轻重有相关性,年龄越小或病情重的患儿,心肌损害发生率高,与体温的高低无相关性。为急诊儿科医师分析病情提供参考,为中医从瘀论证儿童支气管肺炎合并心肌损害提供思路与依据。     

Relation of creatine kinase isoenzyme MB to postoperative electrocardiographic diagnosis in patients undergoing coronary-artery bypass surgery.

We compared (a) the frequency of detection of isoenzyme MB of creatine kinase (CK; EC 2.7.3.2) in serum of patients undergoing coronary-artery bypass surgery, (b) the interval during uhich its activity was supranormal in serum, and (c) an index of the amount of CK released into blood ("CK-MB area") with postoperative electrocardiographic changes in 80 patients. The frequency of detection of CK-MB is a function of frequency of sampling during the early postoperative period. Because the duration of appearance and the calculated CK-MB area increased as the electrocardiogram became more specific for infarction (p less than 0.01), a twice-daily sampling schedule proved clinically relevant. Only 5.4% of patients had electrocardiographic evidence of infarction when CK-MB was absent by the second postoperative morning. When CK-MB was still detected at that time, 69.6% of patients had persistent new Q waves, consistent with infarction. In three patients who died postoperatively, significant myocardial necrosis was demonstrated. All three had had persistently increased values for CK-MB, related to electrocardiographic changes of infarction in one patient and ischemic changes in two. Evidently CK-MB is a more sensitive indicator of myocardial necrosis than the electrocardiogram and CK-MB area should be a useful criterion in evaluating methods of intra-operative myocardial protection.     

Early CK-MB Elevations Predict Ischemic Events in Stable Chest Pain Patients

ABSTRACT Objective : To demonstrate that creatine kinase-MB fraction (CK-MB) elevations within three hours of presentation in the emergency department (ED) are associated with subsequent ischemic events in clinically stable chest pain patients. Methods : Prospective cohort study at two university-affiliated teaching hospitals. Participants were consenting ED chest pain patients 25 years old or older without evidence of rhythm or hemodynamic instability (n = 449). Exclusions included ST-segment elevation ≥0.1 mV in ≥2 electrocardiogram leads, chest wall trauma, abnormal x-ray studies, and incomplete data collection. Measurements included presenting and three-hour CK-MB levels, presenting ECG, initial clinical impression of coronary care unit need, and clinical follow up. Monitored adverse events included myocardial ischemia necessitating coronary angioplasty or cardiac bypass surgery, recurrent in-hospital myocardial infarction, bradycardia requiring pacing, emergent cardioversion, cardiogenic shock, ventricular fibrillation, and death. Results : Overall, nine (2%) of 449 patients experienced an ischemic event within the first 48 hours. All nine patients required either coronary angioplasty or bypass surgery. Four (44%) of the nine patients with 48-hour ischemic events had elevated CK-MB levels. Of 23 patients who had complications within one week of ED presentation, seven (30%) had elevated ED CK-MB levels. An elevated CK-MB level was associated with an ischemic event both within 48 hours (risk ratio 9.5; 95% CI 2.7–33.7) and within one week (risk ratio 5.2; 95% CI 2.3–11.7). Conclusions : An elevated CK-MB level within three hours of ED presentation is associated with a subsequent ischemic event in the clinically stable chest pain patient without ST-segment elevation. However, the ED CK-MB identifies only a minority of otherwise low-risk patients who develop ischemic events; other markers for diagnosing myocardial ischemia in the ED are needed.