Objective To investigate whether single cycle ischemic preconditioning （IP） improves the myocardial preservation in patients undergoing cardiac valve replacement. Methods From August 2002 to April 2006, 85 patients who had chronic heart valve disease and required cardiac valve replacement were randomly divided into two groups. IP group, 47 allocated to receive IP and arrested with 4 C St. Thomas＇ Hospital cardioplegic solution during cardiopulmonary bypass（CPB）, preconditioning was accomplished by using single cycle of 2 minutes occlusion of aorta followed by 3 minutes of reperfusion before cross-clamping. Control group, 38 allocated to receive 4 C St. Thomas＇ Hospital cardioplegic solution alone. Myocardial protective effects were assessed by determinations of creatinine kinase-MB isoenzyme （CK-MB） and cardiac troponin I（cTnI）, ST-T changes, ventricular arrhythmias and other clinical data in ICU. Results Serum CK-MB and cTnI concentrations were increased postoperatively in two groups. At 24, 48 and 72h after operation, values of CK-MB in IP group was significantly lower than that in control group （P〈0.05）, cTnI at 24 and 48h after operation also less in IP group （P〈0.05）. The duration for patients needed for antiarrhythmic drugs in IP group was lower than that in control group （P〈0.05）. Compared with control group, fewer inotropic drugs were used in IP group. As a result, ICU stay time in IP group was shorter than that in control group （P〈0.05）. Conclusion IP enhances the myocardial protective effect when it was used with hypothermic hyper kalemic cardioplegic solution in patients undergoing cardiac valve replacement, IP significantly reduces the postoperative increase of CK-MB, cTnI and plessens the severity of postoperative ventricular arrhythmias.
Objective To evaluate the influences of myocardial injury markers on the short-term and long-term mortality after coronary artery bypass grafting (CABG), so as to provide valuable references for clinical prognosis assessment. Methods Literature was electronically searched in CBM, PubMed, OVID, EMbase and CNKI from the date of their establishment to August 2011, meanwhile the manual searches were also performed to systemize the papers. According to the Cochrane Handbook for systematic reviews, the studies were screened by two reviewers independently, the quality of the included studies was evaluated, the data were extracted, and meta-analysis was conducted using RevMan5.0 software. Results A total of 10 observational studies including creatine kinase-myocardial band (CK-MB) and cardiac troponin I (cTnI), and the patients involved were 10 793 totally. Results of meta-analysis showed that the increasing release of CK-MB was associated with an increasing short-term mortality risk of both on-pump (RR=2.88, 95%CI 1.94 to 4.28, Plt;0.000 01) and off-pump group (RR=3.64, 95%CI 1.07 to 12.42), P=0.04). Also the increasing release of CK-MB was associated with an increasing long-term mortality risk of both on-pump (RR=2.55, 95%CI 1.91 to 3.40, Plt;0.000 01) and off-pump group (RR=3.36, 95%CI1.46 to 7.72, P=0.004). The increasing release of cTnI was also associated with an increasing risk of both short-term mortality (RR=6.45, 95%CI 2.50 to 16.66, Plt;0.1) and long-term mortality (RR=4.18, 95%CI 2.78 to 6.28, Plt;0.1). Conclusion The evidence shows that the increasing release of both CK-MB and cTnI is associated with an increasing risk of the short-term and long-term mortality.
【摘要】 目的 探讨胎儿宫内窘迫对足月新生儿血清心肌酶变化的相关性分析。 方法 将2009年10月-2010年9月在我产科出生有宫内窘迫史而羊水和Apgar评分均正常的足月新生儿20例为观察组，同期出生的健康足月新生儿10例为对照组，分别测定两组出生后1、5 d血清肌酸激酶同工酶（CK-MB）及心肌肌钙蛋白I（cTnI）水平。 结果 观察组出生后1 d血清cTnI高于对照组（Plt;0.001），CK-MB两组差异无统计学意义（Pgt;0.05），出生后5 d血清CK-MB及cTnI均高于对照组（Plt;0.001）；观察组和对照组出生后5 d血清cTnI水平均较1 d时升高，差异有统计学意义（Plt;0.001），血清CK-MB浓度均低于1 d时（Plt;0.001）。观察组患儿经过治疗，1个月后复查血清cTnI除1例未恢复至正常水平外，其余血清CK-MB及心电图均恢复正常。 结论 单纯宫内窘迫可造成足月新生儿血清cTnI及CK-MB水平升高，常规检测血清cTnI及CK-MB能及时了解此类新生儿的心肌受损情况，从而尽早予以保护心肌治疗。【Abstract】 Objective To make a correlation analysis on effect of fetal distress on changes of cardiac enzyme in neonatal serum. Methods Twenty full-term newborns who met diagnostic criteria of fetal distress but were born with normal amniotic fluid and Apgar score between October 2009 and September 2010 were included in the observed group, another ten normal full-term newborns born at same period were in control group. The serum values of cardiac troponin I (cTnI) and creatine kinase (CK-MB) were collected and measured one and five days after birth. Results One day after the birth, the serum levels of cTnI was significantly higher in the observed group compared to that in the control group (Plt;0.001), but there was no difference in CK-MB between the two groups (Pgt;0.05). The values of cTnI five days after the birth were higher than those one days after the birth in both groups (Plt;0.001). The values of CK-MB were higher one day after birth than those five days after birth in both groups (Plt;0.001). In observation group after the treatment, serum cTnI in one patient did not return to normal, and the remaining neonatal serum CK-MB and ECG were normal. Conclusions Elevated level of serum cTnI and CK-mb could be caused by fetal distress in normal full-term newborns with normal amniotic fluid and Apgar score. Routine testing of serum cTnI and CK-MB may be useful to detect myocardial damage in newborns.
ObjectiveTo evaluate the prognosis factors for early death (within 60 days) of acute myocardial infarction (AMI) patients for early identification and prevention of the disease. MethodsWe analyzed the information of AML patients who were admitted to the emergency department between May 2009 and July 2010, and analyzed their clinical data, such as gender, age, prehospital time, myocardial enzyme, electrocardiogram, complications, whether the patients had thrombolysis therapy, time of thrombolysis, end point observation and time of death, ect. Cox multivariate survival analysis was performed with the use of SPSS 18.0 software. ResultsSeventy-one cases were collected with one of them excluded for fragmented data. After analysing, we found that patients' age and isoenzymes of creatine kinase (CK-MB) level were prognosis factors for early death. Further analysis showed that the relative risk (RR) of age was 1.166 (P=0.023), and the RR of CK-MB was 1.001 (P=0.004). ConclusionPatients' age has predictive value for early death of AML. More attention should be paid to AML patients with advanced age. Detecting myocardial enzymes levels, especially the CK-MB level, is significant for predicting early death. Other indicators need to be further explored due to the possible limitation of our study.
ObjectiveTo analyze the influencing and prognostic factors for in-hospital death of creatine kinase-MB after cardiac surgery for congenital heart disease in pediatric. MethodsClinical data of 708 children with body weight less than 15 kg who underwent cardiac surgery at Fu Wai Hospital between January 2012 and December 2013 were retrospectively analyzed. There were 269 males (38.0%) and 439 females (62.0%). The postoperative maximum CK-MB was calculated for analysis and patients were devided into three groups:a group A (CK-MB≤25 IU/L), a group B (25 IU/L < CK-MB≤125 IU/L) and a group C (CK-MB > 125 IU/L). ResultsPostoperative CK-MB level was independently associated with cyanotic congenital heart disease (P=0.002), the aorta cross clamp (P=0.030), the cardiopulmonary bypass time (P=0.002), the cross clamp time (P=0.016), the re-establish of bypass (P < 0.001), deep hypothermic circulatory arrest (P=0.024). There was statistical difference in mortality between the 3 groups (P < 0.001). The receiver operating characteristic curve showed that CK-MB has predictive value for in-hospital death (P < 0.001) and the cutoff value is 168.5 IU/L, with a sensitivity of 54.2%, specificity of 90.8%, positive predictive value of 17.3% and negative predictive value of 98.4%. CK-MB level above 168.5 IU/L was an independent risk factor for in-hospital death (OR=6.364, P < 0.001). ConclusionElevation of CK-MB after cardiac surgery is independently influenced by several variables. Pediatric with major CK-MB elevation has high risk of in-hospital death.
Objective To investigate the dynamic expression and clinical significance of myoglobin, creatine kinase and inflammatory mediators in the serum of patients with multiple trauma. Methods From May 2013 to March 2015, 56 patients with multiple trauma admitted in EICU were recruited in the study. According to the injury severity, 56 patients were divided into a mild trauma group, a medium trauma group and a severe trauma group. The subjects were further divided into a MODS group and a non-MODS group based on multiple organ dysfunction syndrome (MODS) criteria. Twenty healthy adults undergoing physical examination were recruited as control. Serum myoglobin, creatine kinase, IL-6 and TNF-α levels were measured in the multiple trauma patients (1st day, 3rd day, 7th day and 14th day) and the controls. Results Compared with the controls, the serum levels of myoglobin, creatine kinase, IL-6 and TNF-α in the patients with multiple trauma increased significantly from 1st to 14th day after injury (allP＜0.05). Serum myoglobin, creatine kinase, IL-6 and TNF-α levels on 3rd day after injury reached the peak, then decreased gradually in the mild, medium, and severe trauma groups, among which the changes of serum myoglobin, creatine kinase, IL-6 and TNF-α levels were significant on 3rd day compared with other timepoints (allP＜0.05). On 1st day after injury, serum levels ofmyoglobin, creatine kinase, IL-6 and TNF-α also differed significantly between the MODS group and non-MODS group (allP＜0.05). The AUCs of myoglobin, IL-6 and TNF-α for predicting MODS were 0.527-0.817, 0.641-0.890, and 0.197-0.544, respectively. Conclusions The dynamic changes of serum myoglobin, creatine kinase, IL-6 and TNF-α in patients with multiple trauma are correlated well with the injury severity and prognosis. Serum myoglobin, IL-6 and TNF-α levels may be good markers to predict secondary MODS in multiple trauma patients.
Objective To investigate the perioperative change and the predictive value of myoglobin, creatine kinase-MB (CK-MB), and cardiac troponin I (cTnI) in non-coronary cardiac surgery. Methods The clinical data of 77 patients undergoing cardiac surgery for non-coronary lesions in the Shanghai Xinhua Hospital from March 2016 to November 2016 were retrospectively reviewed, including 37 males and 40 females with a median age of 2 years. There were simple congenital heart diseases in 45 patients, complicated congenital heart diseases in 10, and heart valve diseases in 22. The levels of myoglobin, CK-MB and cTnI were collected at the first postoperative day. The ventilation duration and the length of ICU stay were recorded. The recovery condition was accessed by senior surgeons. Results The myoglobin, CK-MB and cTnI concentrations increased at the first postoperative day, and cTnI increased most significantly. The multivariate linear regression analysis indicated that these changes were only related to cardiopulmonary bypass time and aortic cross-clamping time (P<0.001). The high cTnI level was associated with prolonged ventilation duration and length of ICU stay. Fourteen patients (18.2%) did not recovered well, and their cTnI level was significantly higher than that of well-recovered patients (16.8±16.7 ng/mlvs. 5.1±4.4 ng/ml,P<0.001). The cTnI cutoff value of 5.33 ng/ml could predict whether patients had good postoperative recovery (area under the receiver operating characteristic curve=0.862,P<0.001), and the predictive value of cTnI was superior to that of myoglobin and CK-MB. Conclusion The increase levels of myoglobin, CK-MB and cTnI post non-coronary cardiac surgery are associated with prolonged cardiopulmonary bypass time and aortic cross-clamping time. cTnI on postoperative 24 h may predict good recovery, and it is a useful biomarker.