Daño miocárdico en la COVID-19 / Myocardial Damage in COVID-19

Introducción: La enfermedad por coronavirus ha causado daño miocárdico, razón que ha impactado en las ciencias médicas por lo que ha sido motivo de investigación. Objetivo: Mostrar a través de resultados de recientes investigaciones, los mecanismos mediante los cuales el virus SARS-CoV-2 produce daño miocárdico en los pacientes afectados por la COVID-19, y su influencia en el pronóstico a corto y largo plazo. Métodos: Se realizó una búsqueda bibliográfica de la literatura médica actualizada sobre el tema publicada en idioma inglés y español, indexado en varias bases de datos en el período comprendido de mayo de 2019 a mayo de 2022. De un total de 198 artículos en la revisión, cumplieron con los criterios de selección 78 artículos. Se excluyeron los que no contenían información precisa en cuanto al daño miocárdico provocado por el SARS-CoV-2. Resultados: Se han descrito varios mecanismos que pueden ser los desencadenantes entre los que se destacan: daño directo por angiotensina II, lesión inducida por hipoxia, daño microvascular miocárdico y síndrome de respuesta inflamatoria sistémica. Conclusiones: Los diferentes mecanismos por los cuales el virus SARS-CoV-2 produce daño miocárdico, hacen que los pacientes con la COVID-19 tengan más probabilidades de sufrir una lesión miocárdica. Las manifestaciones clínicas en pacientes con la COVID-19 como miocarditis, insuficiencia cardíaca, arritmias cardíacas, síndrome coronario agudo y derrame pericárdico, son más comunes en pacientes con antecedentes de enfermedad cardiovascular que desfavorecen su pronóstico(AU)

Introduction: Coronavirus disease has caused myocardial damage. This reality has impacted medical sciences and it has been the subject of research. Objective: To show, through the results of recent research, the mechanisms by which the SARS-CoV-2 virus produces myocardial damage in patients affected by COVID-19, and its influence on short- and long-term prognosis. Methods: A bibliographic search was carried out of the updated medical literature on the topic published in English and Spanish, indexed in several databases from May 2019 to May 2022. One hundred ninety-eight articles were included in the review, only 78 met the selection criteria. Those that did not contain precise information regarding myocardial damage caused by SARS-CoV-2 were excluded. Results: Several mechanisms have been described as probable triggers, standing out direct damage by angiotensin II, hypoxia-induced injury, myocardial microvascular damage and systemic inflammatory response syndrome. Conclusions: The different mechanisms by which SARS-CoV-2 virus produces myocardial damage make COVID-19 patients more likely to suffer myocardial injury. Clinical manifestations in COVID-19 patients such as myocarditis, heart failure, cardiac arrhythmias, acute coronary syndrome and pericardial effusion are more common in patients with history of cardiovascular disease, which do not favors their prognosis(AU)

Clinical analysis of 208 children with congenital coronary artery origin abnormalities / 中国小儿急救医学

Objective:To describe the clinical features and prognosis of congenital anomalous origin of coronary artery(AOCA) in children to increase our understanding of the disease.Methods:This retrospective study included children diagnosed with AOCA using computed tomography coronary angiography(CTCA) admitted to the Department of Cardiology, Beijing Children′s Hospital, Capital Medical University, from January 1, 2014 to December 31, 2019.The clinical presentations, laboratory results, imaging analyses, treatments, and prognoses of these patients were analyzed.Results:A total of 208 children, including 105 boys and 103 girls, we evaluated the ages(9.03±4.18)years old with AOCA.Of these, 157 cases(75.5%) presented with cardiac symptoms, such as chest tightness, palpitations, dizziness, syncope, fatigue, and decreased endurance.Three cases(1.4%) had atypical symptoms of paroxysmal crying, dyspnoea and cyanosis, and 48 cases(23.1%) were asymptomatic.Levels of serological markers of myocardial injury were elevated in 59 cases(28.4%), and 140 cases(67.3%) had predominant ST-T abnormalities on electrocardiograms.Transthoracic echocardiography identified 27 cases (13%) with cardiac enlargement and ten cases(4.8%) with left ventricular systolic dysfunction.There were 126 cases(60.6%) with the anomalous origin of the left coronary artery revealed by CTCA, 50 cases(24.0%) with the anomalous origin of the right coronary artery and 32 cases(15.4%) with bilateral coronary arteries of anomalous origin.Five children underwent surgical treatment, and the remaining 203 children were treated conservatively with drugs.The whole group was successfully treated, and no death case was recorded during the follow-up period.Conclusion:AOCA may cause different degrees of myocardial ischemia.Diverse clinical presentations and diagnostic limitations of transthoracic echocardiography often lead to missed diagnosis or misdiagnosis.In contrast, CTCA has high diagnostic accuracy and can be used to identify the location and course of the coronary ostia.Hence, the management of AOCA should be tailored on a case-to-case basis, taking into consideration of the specific type of coronary origin, with surgical intervention being warranted if necessary.

One case of myocardial damage caused by carbamate pesticide poisoning / 中华劳动卫生职业病杂志

The data of a patient with carbamate pesticide poisoning were analyzed. Cardiac arrest, oliguria, acute renal injury and pulmonary infection occurred during treatment. After cardiopulmonary resuscitation, tracheal intubation, CRRT, anti-infection and other symptomatic support treatment, the patient recovered and discharged. The myocardial damage caused by carbamate pesticide poisoning is easy to be ignored, and it often causes cardiac manifestations such as arrhythmia and cardiac insufficiency, and the related markers of cardiac injury, electrocardiogram and echocardiogram are also changed. Therefore, the awareness of cardiac damage caused by carbamate pesticide poisoning should be improved.

Clinical characteristics and risk factors of mycoplasma pneumonia complicated with myocardial damage in children in Qinghai area / 公共卫生与预防医学

Objective To analyze the clinical characteristics and risk factors of myocardial damage in children with mycoplasma pneumonia in Qinghai area, and to provide evidence for clinical diagnosis and treatment. Methods A total of 328 children diagnosed with mycoplasma pneumonia in Qinghai region from June 2016 to June 2020 were selected as the research subjects. According to whether they were complicated with myocardial damage, they were divided into the control group (no myocardial damage, n=185) and the experimental group (complicated with myocardial damage, n=143). The data of the children were collected by using a questionnaire made by our hospital. These included gender, age, fever duration, initiation time of macrocyclic esters and fever degree, etc., and the levels of CK-MB, CK, CTNNI, NT-proBNP, CRP, LDH and RDW were determined. RESULTS: There were no significant differences in age, gender and complications between the two groups (P>0.05). There were statistically significant differences in the use time, fever duration and fever degree between the two groups (P<0.05). In terms of laboratory indicators, there were statistically significant differences in the levels of CK-MB, CK, cTNnI, NT-probNP, CRP, LDH and RDW between the two groups (P<0.05).Logistic regression analysis showed that the duration of fever (OR=3.105), the start time of macrolides (OR=1.457), the degree of fever (OR=2.495), CRP(OR=1.853) and RDW(OR=1.358) were the risk factors for myocardial damage in children with mycoplasma pneumonia in Qinghai area (P<0.05). Conclusion The duration of fever, the initiation time of macrolide drugs, the degree of fever, CRP and RDW are independent risk factors for myocardial damage in children with mycoplasma pneumonia in Qinghai area. The early use of macrolide drugs can prevent myocardial damage, improve the treatment effect and improve the prognosis of children.

Advances in diagnosis and treatment of myocardial damage in childern DMD/BMD / 国际儿科学杂志

Duchenne/Becker muscular dystrophy(DMD/BMD)is a progressive, destructive neuromuscular disease.It is caused by mutations in the gene encoding dystrophy.The mutations come in various forms and the severity of the disease varies.The onset of the disease is insidious, and the initial manifestation is only abnormal serum enzymes.With the progression of the disease, the skeletal muscle and myocardial striated muscle cells are further destroyed, gait abnormalities and myocardial damage gradually appear, and eventually most children die of heart failure.At present, there is no effective radical cure.The existing treatment methods, including oral glucocorticoids and restoring functional dystrophin, are mostly limited to alleviate skeletal muscle symptoms, and are very limited to improve cardiac symptoms.This article reviews the progress in the diagnosis and treatment of myocardial damage in DMD/BMD, in order to provide reference for clinical research and gene therapy.

Investigation on risk factors of acute myocardial damage caused by childhood sepsis in Qinghai area and preventive measures / 公共卫生与预防医学

Objective To preliminarily analyze the acute myocardial damage and important risk factors caused by sepsis in children in Qinghai, and analyze and discuss preventive measures on the basis of the foregoing. Methods The study selected 385 children with sepsis in our hospital from January 2016 to December 2020 and included 158 children with acute myocardial damage caused by sepsis (case group), and the remaining 227 cases (control group) were not seen Myocardial damage. The study collects basic information such as sociodemographic information of all children, and collects serum troponin I (cTnI) and CK-MB levels (determined by chemiluminescence method); as well as serum CRP levels and PCT levels. To compare and analyze the levels of related indexes in children with myocardial damage, and the differences from those in the control group. Then analyze and see the risk factors that are potentially associated with acute myocardial damage. Use SPSS statistical software package to analyze the data. cTnI enzyme-labeled immunoassay assay, reagents are provided by Nanjing Jidan Biotechnology Co., Ltd.; medicine is (0.00~0.01) μg/mL, cTnI level normal group (≤0.01 μg/mL) and cTnI level elevated group ( > 0.01 μg/mL) ); CK-MB>5 ng/mL is the positive standard for myocardial muscle injury; CRP medical reference value < 8mg/L, PCT< 0.1 ng/mL; CRP is detected by the turbidimetric method, and the instruments and reagents are manufactured by German Deling BNⅡ specific protein analyzer and original matching reagents. Pediatric Critical Case Score (PCIS) and Pediatric Death Risk Factor Score (PRISM Ⅲ) (evaluate twice, take the lowest value). Results In this study, the majority of male children were male, and the proportion of children with active myocardial damage had a higher proportion of low-grade fever. At the same time, the disease was more severe than the control group. It can be seen that the PCIS score is lower and the PRISM Ⅲ is higher. The difference is statistically significant. (P<0.05). The serum troponin I (cTnI), CK-MB, CRP, and PCT levels in the case group were significantly higher than those in the control group, and the differences were statistically significant (P<0.05); the serum albumin levels were significantly lower than those in the control group, and the differences were statistically significant Scientific significance (P<0.05); the risk factor analysis was carried out with the presence of myocardial damage as the dependent variable, and the potential influencing factors as the independent variables (social demographic factors, basic conditions of hospitalization, levels of indicators related to myocardial damage, etc.). Including single factor analysis (adjustment for potential confounding factors) and multivariate analysis. The results showed that increased age, low fever, increased PCT, low albumin level ( ≤ 25g/L), and increased PRISMⅢ were risk factors for myocardial damage (P<0.05). Conclusions Acute myocardial damage caused by sepsis in children with sepsis can be seen in male children, and children with active myocardial damage have a higher proportion of low-grade fever. At the same time, the condition is more severe than that of the control group. It can be seen that the PCIS score is higher. Low, higher PRISMⅢ, and other significant characteristics; analysis of potential influencing factors suggests that increased age, low fever, increased PCT, low albumin levels, and increased PRISMⅢ are positively correlated with the increased risk of acute myocardial damage in children. Therefore, it is planned to be clinically 1. Pay attention to older children with low fever and more critically ill children; 2. Detect or monitor the levels of PCT and albumin in children to early warn the occurrence of myocardial damage; carry out necessary and timely warning and prevention.

Quantification of Acute Myocardial Damage Secondary to Implantation of Electrodes for the Left Bundle Branch Area Pacing

ABSTRACT Background: Different from the traditional right ventricular pacing, the left bundle branch area pacing (LBBAP) is accomplished with deeper lead implantation and more attempts. However, myocardial damage is unclear in LBBAP. Objective: The objective of the study was to observe the change of troponin T and explore possible factors associated with greater myocardial damage in LBBAP. Methods: Patients with an indication for pacemaker implantation underwent attempts for LBBAP by transventricular septal method. Levels of troponin T were determined before operation, 12 h and 1 week after the operation. Parameters of intraoperation and follow-up were recorded and analyzed. Results: In total, successful LBBAP was achieved in 126 patients. The levels of troponin T increased significantly at 12 h after the operation compared with those before operation (96.45 ± 11.07 [69.06] vs. 16.59 ± 1.84 [11.92] ng/L, p < 0.001), while there were no significant differences between pre- and post-operative levels at 1 week. Correlation and regression analysis showed that only the number of attempts was an independent factor related to the change of troponin T. During 1 year of follow-up, LBBAP was safe and feasible with few complications. Conclusions: Myocardial damage of LBBAP was clinically significant. The number of attempts was an independent factor related to the myocardial damage.

Fisiopatología de la insuficiencia cardiaca en pacientes con COVID-19 / Pathophysiology of heart failure in patients with COVID-19 / Fisiopatologia da insuficiência cardíaca em pacientes com COVID-19

RESUMEN - Introducción: Se revelan controversias respecto a los mecanismos que determinan la vulnerabilidad de los pacientes con insuficiencia cardiaca a la infección por el virus severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2), que produce el síndrome respiratorio llamado Coronavirus Infectious Disease-19 (COVID-19). Objetivo: Recopilar información sobre la fisiopatología de la insuficiencia cardiaca aguda en el contexto de la COVID-19. Método: En el Policlínico Comunitario "Ramón López Peña" de Santiago de Cuba, entre septiembre y noviembre del 2020, se realizó una revisión narrativa sobre este tema. La búsqueda se efectuó consultando las bases de datos Pubmed, Infomed y SciELO, sin restricción de fecha, en los idiomas español e inglés. Desarrollo: Se manifiestan incertidumbre en los mecanismos implicados en la fisiopatología de la insuficiencia cardiaca de los pacientes con esta enfermedad infecciosa. El daño miocárdico se debe a los efectos directos de la infección viral sobre el miocito, que se expresa como una respuesta inflamatoria local y a la participación del corazón como órgano diana de respuesta inflamatoria sistémica e inapropiada generada por la marcada liberación de citocinas. Esta última, además, genera un daño endotelial que desencadena complicaciones tromboembólicas e isquémicas, disfunción sistodiastólica del corazón, y finalmente la falla multiorgánica. Consideraciones finales: A pesar de los avances en el conocimiento de la etiopatogenia de esta enfermedad, aún se requiere que se esclarezcan con precisión los mecanismos fisiopatológicos que determinan la presentación de la insuficiencia cardiaca, si bien se reconoce la influencia de la respuesta inflamatoria inapropiada, inducida por citoquinas, en la presentación del daño miocárdico.

ABSTRACT - Introduction: The mechanisms that are suggested as determinant in the vulnerability of patients with heart failure to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) and which cause the respiratory syndrome labeled COVID-19 (Coronavirus Infectious Disease-19), has revealed controversial. Objective: To gather information on the pathophysiological features of acute heart failure in the context of COVID-19. Method: Concerning this topic, from September to November 2020 at the Policlínico Comunitario "Ramón López Peña" in Santiago de Cuba, a narrative review was carried out. The search was conducted checking the databases Pubmed, Infomed and SciELO, without date restriction, and in Spanish and English language. Development: The mechanisms involved on the pathophysiological features of heart failure in patients with this infectious disease revealed uncertainty. Myocardial damage is achievement of two aspects, the direct effect of viral respiratory infection on the myocyte, which is expressed as a local inflammatory response, and the heart participation as a target organ to the systemic and inappropriate inflammatory response, generated by a marked cytokines release. Conclusions: Despite the advances in understanding the etiopathogenesis of this disease, the pathophysiological mechanisms that determine on the heart failure still require to be precisely clarified, although the influence of the inappropriate inflammatory response, induced by cytokines, it is recognized in the onset myocardial damage.

RESUMO - Introdução: Revelam-se controvérsias a respeito dos mecanismos que determinam a vulnerabilidade dos pacientes com insuficiência cardíaca à infecção pelo vírus severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2), gerador da síndrome respiratória denominada Coronavirus Infectious Disease-19 (COVID-19). Objetivo: Coletar informações sobre a fisiopatologia da insuficiência cardíaca aguda no contexto da COVID-19. Método: Na Policlínica Comunitária "Ramón López Peña" de Santiago de Cuba, entre setembro e novembro de 2020, foi realizada uma revisão narrativa sobre o tema. A busca foi realizada por meio de consulta às bases de dados Pubmed, Infomed e SciELO, sem restrição de datas, nos idiomas espanhol e inglês. Desenvolvimento: A incerteza se manifesta nos mecanismos envolvidos na fisiopatologia da insuficiência cardíaca em pacientes com essa doença infecciosa. O dano miocárdico se deve aos efeitos diretos da infecção viral no miócito, que se expressa como resposta inflamatória local, e ao envolvimento do coração como órgão alvo da resposta inflamatória sistêmica e inadequada gerada pela liberação acentuada de citocinas. Esta última também gera dano endotelial que desencadeia complicações tromboembólicas e isquêmicas, disfunção cardíaca sistodiastólica e, finalmente, falência de múltiplos órgãos. Conclusões: Apesar dos avanços no conhecimento da etiopatogenia desta doença, ainda é necessário esclarecer com precisão os mecanismos fisiopatológicos que determinam a apresentação da insuficiência cardíaca, embora se reconheça a influência da resposta inflamatória inadequada, induzida por citocinas, na apresentação de dano miocárdico.

Effect of Guizhitang with Different Proportions of Cinnamomi Ramulus and Paeoniae Alba Radix on Overactive Activation of Cardiac Sympathetic Nervous System in Salt-Sensitive Hypertensive Rats / 中国实验方剂学杂志

Objective:To explore the effect and mechanism of Guizhitang with different proportions of Cinnamomi Ramulus and Paeoniae Alba Radix on overactive cardiac sympathetic nerves in salt-sensitive hypertensive rats. Method:Randomly divide the forty male 6-week-old salt-sensitive hypertensive rats into five groups： the normal control group， the model group， the Cinnamomi Ramulus and Paeoniae Alba Radix 1∶1 group， the Cinnamomi Ramulus and Paeoniae Alba Radix 1∶2 group，and the Cinnamomi Ramulus and Paeoniae Alba Radix 2∶1 group， each group has 8 animals， the normal control group was fed with low-salt feed， and the remaining four groups were fed with 8% high-salt feed. After 4 weeks of feeding， gastric feeding was started. Give both the normal control group and model group saline and the Cinnamomi Ramulus and Paeoniae Alba Radix 1∶1 group， the 1∶2 group，and the 2∶1 group， were given Guizhitang aqueous solution at 4.0， 5.5 and 5.5 g·kg-1， respectively. Continuous gavage intervention was held for 4 weeks. IITC multi-channel non-invasive sphygmomanometer was used to detect changes of systolic blood pressure before and after treatment in rats. Left ventricular anterior wall end-diastolic thickness （LVAWd） and interventricular septal diastolic thickness （IVSd） were detected by echocardiography. Hematoxylin-eosin（HE）staining and Masson staining were used to observe the myocardial morphological changes of rats in each group， Western blot was used to detect the expression of nerve growth factor （NGF）， growth-associated protein 43 （GAP43） and tyrosine hydroxylase （TH） protein. Result:After 4 weeks of intervention with Guizhitang， compared with the normal control group， the blood pressure， LVAWd and IVSd of the model group were significantly increased， and the expressions of NGF， TH and GAP43 protein were significantly increased （P<0.01）. HE and Masson staining results showed that the model group had myocardial cell edema， a large number of inflammatory cell infiltration， myocardial fiber hyperplasia and disordered arrangement， and a large amount of collagen deposition could be seen in the intercellular substance. Compared with model group， the systolic blood pressure of rats in each Guizhitang group increased slowly， and the expression of NGF， TH and GAP43 protein decreased （P<0.05，P<0.01），the Cinnamomi Ramulus and Paeoniae Alba Radix 1∶1 group has the best effect. The results of echocardiography shows that the 1∶1 Guishao group could reduce LVAWd and IVSd levels （P<0.05，P<0.01）， the Cinnamomi Ramulus and Paeoniae Alba Radix 1∶2 group could reduce IVSd level （P<0.05）， there was no statistical difference in LVAWd， there was no statistical difference in LVAWd and IVSd in 2∶1 group. In terms of myocardial morphology， each group of Guizhitang can reduce cell edema and inflammatory cell infiltration， reduce myocardial fiber hyperplasia and collagen deposition， and improve the disorder of myocardial fiber arrangement. Among them， the 1∶1 group has the best effect. Conclusion:Guizhitang can inhibit the overactive activation of cardiac sympathetic nervous system，reduce the extent of myocardial fibrosis， inflammatory infiltration and myocardial hypertrophy， and protect salt-sensitive hypertension rats， whose mechanism may be related to regulating the expression of heart NGF.Among them， the Cinnamomi Ramulus and Paeoniae Alba Radix 1∶1 group is better than the 1∶2 and 2∶1 group in reducing myocardial fibrosis， inflammatory infiltration and myocardial hypertrophy.

Use of tissue doppler imaging for the early detection of myocardial dysfunction in patients with the indeterminate form of Chagas disease

Abstract INTRODUCTION: Chagas disease is one of the most common diseases in Latin America and heart involvement is the main cause of death. This study aimed to determine differences in tissue Doppler imaging (TDI) parameters in the assessment left and right ventricular function in patients with the indeterminate form of Chagas disease compared to those in healthy controls. METHODS: We compared 194 patients with the indeterminate form of Chagas disease to 72 age-matched healthy individuals. We considered p-values <0.05 to be statistically significant. RESULTS: TDI analysis of the right ventricular (RV) showed lengthened isovolumic relaxation time (IRT) and higher RV index of myocardial performance (RIMP) and left ventricle (LV) index of myocardial performance (LIMP) in the Chagas group than in the control group, indicating RV and LV systolic and diastolic myocardial damage. TDI analysis of the myocardial velocities of the interventricular septum and the lateral wall of the LV also showed a systolic and diastolic myocardial damage. CONCLUSIONS: The study results demonstrated early LV systolic and diastolic myocardial damage in the RV and LV in patients with the indeterminate form of Chagas disease by TDI. These early findings of RV and LV dysfunction may help identify patients who will progress to heart failure during the disease course. TDI should be included in initial patient evaluations because it allows adequate follow-up and treatment.

Effects of pulse contour cardiac output monitoring technology in amelioration of myocardial damage in fluid resuscitation of patients with large area burn in the early stage / 中华烧伤杂志

Objective@#To analyze effects of pulse contour cardiac output (PiCCO) monitoring technology in amelioration of myocardial damage in fluid resuscitation of patients with large area burn in the early stage.@*Methods@#From November 2015 to November 2017, medical data of 52 patients with large area burn hospitalized in our unit, meeting the inclusion criteria, were analyzed retrospectively. Twenty-seven patients (18 males and 9 females) with age of (43±10)years in tradition group hospitalized from November 2015 to November 2016 were monitored by traditional monitoring methods for fluid resuscitation, and 25 patients (18 males and 7 females) with age of (44±10)years in PiCCO group hospitalized from December 2016 to November 2017 were monitored by traditional monitoring methods and PiCCO monitoring equipment for fluid resuscitation. Fluid infusion coefficients and total fluid replacement volume of patients in both groups at the first and second post burn hour (PBH) 24, as well as the levels of N terminal pro B type natriuretic peptide (NT-proBNP), cardiac troponin T (cTnT), and creatine kinase MB (CK-MB) immediately on admission and post burn day (PBD) 1, 2, 3, 4, 5, 6, and 7 were recorded. Data were processed with analysis of variance for repeated measurement, chi-square test, t test and Bonferroni correction, and Mann-Whitney U test and Bonferroni correction.@*Results@#(1) The fluid infusion coefficients of patients in tradition group at the first and second PBH 24 were respectively (1.42±0.10) and (0.94±0.14)mL·kg-1·% total body surface area (TBSA)-1, and those in PiCCO group were respectively (1.76±0.14) and (0.85±0.08) mL·kg-1·%TBSA-1. Fluid infusion coefficient and total fluid replacement volume at the first PBH 24 of patients in PiCCO group were significantly higher than those in tradition group (t=-9.775, -4.769, P<0.01). Fluid infusion coefficient at the second PBH 24 of patients in PiCCO group was significantly lower than that in tradition group (t=2.682, P<0.05). There was no statistically significant difference in total fluid replacement volume at the second PBH 24 in patients between the two groups (t=1.167, P>0.05). (2) Immediately on admission and PBD 1, 2, 3, 4, 5, 6, and 7, the levels of NT-proBNP of patients in tradition group were respectively 518 (320, 763), 236 (98, 250), 139 (62, 231), 172 (104, 185), 296 (225, 341), 727 (642, 921), 1 840 (1 357, 2 081), 1 005 (671, 1 297) pg/mL, and those in PiCCO group were respectively 444 (206, 601), 66 (29, 73), 54(28, 75), 139(101, 175), 199 (106, 279), 576 (333, 837), 833 (466, 1 080), 485 (225, 710) pg/mL. The levels of NT-proBNP of patients in PiCCO group on PBD 1, 2, 6, and 7 were significantly lower than those in tradition group (Z=-5.004, -3.967, -5.285, -4.626, P<0.01). The levels of NT-proBNP immediately on admission and PBD 3, 4, and 5 in patients between the two groups were close (Z=-0.834, -0.806, -2.665, -2.153, P>0.05). (3) Immediately on admission and PBD 1, 2, 3, 4, 5, 6, and 7, the levels of cTnT of patients in tradition group were respectively (42±15), (21±12), (17±7), (11±4), (12±4), (94±32), (88±23), (42±23) pg/L, and those in PiCCO group were respectively (37±15), (9±3), (10±3), (13±3), (12±5), (85±30), (60±26), (22±14) pg/L. The levels of cTnT of patients in PiCCO group on PBD 1, 2, 6, and 7 were significantly lower than those in tradition group (t=5.227, 4.751, 4.239, 3.845, P<0.01). The levels of cTnT immediately on admission and PBD 3, 4, and 5 of patients between the two groups were close (t=1.098, -1.562, -0.117, 1.107, P>0.05). (4) The levels of CK-MB of patients in PiCCO group on PBD 3, 6, and 7 were significantly lower than those in tradition group (t=3.123, 4.103, 3.178, P<0.05 or P<0.01). The levels of CK-MB immediately on admission and PBD 1, 2, 4, and 5 in patients between the two groups were close (t=0.351, 1.868, 1.100, 0.798, 2.094, P>0.05).@*Conclusions@#PiCCO monitoring technology can monitor and guide fluid resuscitation of patients with large area burn in the early stage more scientifically and reasonably, and the effect of reducing myocardial damage is better than traditional monitoring methods.

Research progress of imaging techniques in monitoring myocardial damage caused by chemotherapeutic drugs / 中国介入影像与治疗学

The early monitoring, detection and treatment of the myocardial damage caused by chemotherapeutic drugs have important significances in avoiding further damage to cardiac structure and function and improve the prognosis of patients. Imaging methods have played an important role in the evaluation of myocardial damage caused by chemotherapeutic drugs. The advancements of imaging techniques in monitoring the myocardial damage caused by chemotherapeutic drugs were reviewed in this article.

Quantitative evaluation of left ventricular myocardium damage in patients with breast cancer after combined chemotherapy using velocity vector imaging / 中国医学影像技术

Objective: To investigate the value of velocity vector imaging (VVI) in quantitatively evaluating the degree of myocardial damage in breast cancer patients treated with combined chemotherapy. Methods Totally 65 patients with human epidermal growth factor receptor-2 (HER-2) positive breast cancer were divided into CETH group (combined chemotherapy with Herceptin) and CET group (combined chemotherapy). Routine echocardiography and VVI were performed before chemotherapy and at the end of the 5th and 7th chemotherapy cycles, respectively. The parameters of conventional echocardiography, systolic strain rate (SSR) and early diastolic strain rate (DSR) were analyzed. Results No significant difference of ultrasound parameters was found between CETH group and CET group before and at the end of the 5th, 7th cycles of chemotherapy (all P>0.05). In both CETH group and CET group, there were significant differences of SSR and DSR in 16 segments of left ventricle before and at the end of the 5th and 7th cycles of chemotherapy (all P<0.05). With the prolongation of chemotherapy time, SSR and DSR decreased gradually, and there were significant differences between each of the two time points (all P<0.05). At the end of the 7th cycle of chemotherapy, SSR and DSR of left ventricular segments in CETH group were lower than those in CET group (all P<0.05). Conclusion VVI is more sensitive than conventional echocardiography in detecting left ventricular myocardial damage, which can quantitatively assess myocardial damage of breast cancer patients with different chemotherapy regimens.

Imaging evaluation of post-myocardial infarction injury / 上海交通大学学报（医学版）

Imaging techniques play a vital role in evaluating myocardial damage in patients with myocardial infarction. Accurate evaluations of postinfarction function and scar can help identify high-risk patients and provide prognosis information, which contributes much to clinical practice. The assessment of myocardial damage mainly includes overall evaluations of ventricular function and remodeling and targeted characterization of myocardial infarction including infarct size, myocardial viability and microvascular obstruction. Echocardiography, cardiac magnetic resonance, CT and nuclear examinations are most common imaging techniques currently. This review is to update evidence on applications of these modalities in evaluation of postinfarction myocardial damage and offer some helps to health workers.

Clinical characteristics of anomalous origin of coronary artery accompanied with myocardial damage in children:A report of 72 cases / 中国实用儿科杂志

OBJECTIVE: To investigate the clinical characteristics and treatment strategies of anomalous origin of the cor⁃onary artery accompanied with myocardial damage,so as to improve the level of clinicians' diagnosis and treatment of this disease. METHODS: The clinical data of 72 cases of anomalous origin of the coronary artery accompanied with myo⁃cardial damage admitted in Department of Cardiology,Beijing Children's Hospital,Capital Medical University from2015 to 2017 were analyzed retrospectively. The clinical characteristics,diagnosis and treatment methods were analyzed.RESULTS: In 42 cases(58.3%),chest pain,chest tightness and palpitation were the main clinical symptoms. ECG abnor⁃malities were mainly ST-T changes(62.5%). Echocardiography showed 13 cases(18.1%)of cardiac enlargement,4 cas⁃es(5.6%)of left ventricular systolic dysfunction. Coronary artery CT angiography(CTA)showed that the anomalous ori⁃gin of the left coronary artery was the most frequent(73.6%),followed by the anomalous origin of bilateral coronary arter⁃ies(13.9%),and the anomalous origin of the right coronary artery was the least frequent(12.5%). The whole group was successfully treated with no death. CONCLUSION: There might be a correlation between the anomalous origin of coronary artery and ischemic myocardial damage. In the examination of patients,pediatricians should pay more attention to the judgments of the position and movement of the coronary artery by CTA,and attach importance to the differential diagno⁃sis between ischemic myocardial damage and myocarditis.

Imaging evaluation of post-myocardial infarction injury / 上海交通大学学报（医学版）

Imaging techniques play a vital role in evaluating myocardial damage in patients with myocardial infarction. Accurate evaluations of postinfarction function and scar can help identify high-risk patients and provide prognosis information, which contributes much to clinical practice. The assessment of myocardial damage mainly includes overall evaluations of ventricular function and remodeling and targeted characterization of myocardial infarction including infarct size, myocardial viability and microvascular obstruction. Echocardiography, cardiac magnetic resonance, CT and nuclear examinations are most common imaging techniques currently. This review is to update evidence on applications of these modalities in evaluation of postinfarction myocardial damage and offer some helps to health workers.

Changes in Electrocardiogram Following Percutaneous Coronary Intervention and its Prognostic Implications

Background: The elevation of troponin-T (Trop-t) and creatinine kinase myocardial isoform (Ckmb) and elevation of these markers lead to major adverse cardiac events (MACEs). The association between above-mentioned parameters along with electrocardiogram (ECG) changes can be suitable diagnostic tool for myocardial injury following percutaneous coronary intervention (PCI). The present study was attempted to know the association of the changes in surface ECG and cardiac biomarkers and MACEs following PCI with the outcome in follow up among patients in eastern India. Methods: In present study, 100 patients were randomly selected for coronary angioplasty between April2012 to March2013. All the cases were referred to catheterization laboratory for elective PCI for single vessel or multivessel in native coronary artery. The biomarkers such as trop-t and Ckmb and MACEs along with changes in ECG were estimated as per standard protocol. Results: ECG changes were statistically significantly correlated with post procedure Trop-t elevation (p<0.001), Ckmb elevation (p<0.001) and MACEs (P<0.01 and p<0.001) in 6 months followed up. Conclusion: In conclusion, the present study showed significant relationship between MACEs during followed up and changed in surface ECG along with Trop-t and Ckmb elevation in the post-PCI period of six-month followed up in stable ischaemic heart disease.

Status of Lipid Profile in Hypertensive Patients of A, B, O and AB Blood Groups

Background: Hypertension is the most common illness of circulatory system and is a worldwide health challenge affecting both developed and developing nations. The development of hypertension is a multi-factorial process and the risk factors for its development are many such as genetic factors, obesity, age & sex factors, salt sensitivity, dyslipidemia, hyperinsulinemia & insulin resistance, environmental factors, socio economic imbalances, free radicals/reactive Oxygen species, oxidative stress, blood groups etc. The role of blood groups in the etiology of essential hypertension has long been suspected. Methods: The study design was a cohort study consisting of 15 hypertensive patients of the A, B, AB and O each. Anthropometric parameters such as Blood pressure (SBP/DBP) and Body Mass Index (BMI) and Biochemical parameters such as Blood grouping, Blood Glucose levels, Haemoglobin levels, Lipid profile, which included Triglycerides, Total cholesterol, HDL cholesterol and LDL and VLDL cholesterol, were measured using standardized methods. The various parameters were compared between hypertensives of the various blood groups and statistical analysis was done using SPSS. Mean and SD of each group was calculated, and Unpaired student’s t-test was applied (P < 0.05 considered as significant). Results: When BMI was compared among hypertensive groups we observed significant increased level of BMI in group A as compared to group O hypertensives. (10.36%; P<0.05). While comparing SBP between hypertensive groups we observed significant raised level of SBP in group A as compared to group B (9.38%; P<0.01) and O (10.45%; P<0.01). Similarly, DBP was found to be increased significantly in group A as compared to group B ((5.34%; P<0.05) and O hypertensive patients (5.06%; P<0.001). LDL-C and HDL-C were non-significantly altered in these groups however value of VLDL-C was found increased in group A as compared to group O hypertensives (20.38%; P< 0.05). Conclusion: The study concluded that there is a significantly higher SBP and DBP in the hypertensives of the A blood group as compared to the hypertensives of the B and O blood groups. It also found increased levels of serum triglycerides, total cholesterol, LDL-C, VLDL-C along with decreased levels of HDL-C was in hypertensive patients predominantly in group A and AB hypertensive. The hypertensive patients of A blood group have shown a statistically significant increase in BMI as compared to hypertensives of the other blood groups.

Assessment of Peri-procedural Myocardial Injury in Patients of Post-percutaneous Coronary Intervention: Diagnosis through Serum Biomarkers as Cardiac Troponin T and Creatine Kinase Myocardial Isoform

Background: Cardiac troponin (CTnT) and creatinine kinase myocardial isoform (CKMB) are suitable marker for myocardial injury following percutaneous coronary intervention (PCI). Elevation of these markers lead to major adverse cardiac events (MACEs). The objective was to detect the elevation of serum CTnT and CKMB during post-PCI period and identify MACE during six-month followed up among patients in eastern Indian. Methods: In present study, 100 patients were randomly selected for coronary angioplasty between April2012 to March2013. All the cases were referred to catheterization laboratory for elective PCI for single vessel or multivessel in native coronary artery. The CTnT and CKMB parameters were estimated as per standard protocol. The categorization was done on the basis of baseline (normal value), ≤3time and >3time elevation for both the biomarkers and respective MACEs as MACE-1, MACE-2, MACE-3, MACE-4 and MACE-5 were determined. Results: There were more MACE in patients in six month follow up who sustainned >3times elevation in CTnT and CKMB during pos-PCI period. There was highly significant correlation (P<0.001 and P<0.01) with increasing trend of CTnT and CKMB elevation and risk of MACEs. MACEs were significantly (P<0.001 and P<0.01) correlated with diabetes mellitus, hypertension, renal dysfunction, fluoroscopy time, stent length, left ventricular ejection fraction and type of lesion. It was also observed that more hospital stay led to elevation of CTnT and CKMB. Conclusions: It is concluded that the elevation of CTnT and CKMB in serum during post-PCI can predict MACEs in six-month follow up in stable ischaemic heart disease.

Interleukin-6 contributes to myocardial damage in pregnant rats with reduced uterine perfusion pressure

Preeclampsia is one of the most frequent and difficult illnesses in pregnancy, which jeopardizes both mother and fetus. There are several diagnostic criteria for preeclampsia. However, the preeclampsia-associated myocardial damage has not been described. In this study, we employed reduced uterine perfusion pressure (RUPP) to generate a rat model of preeclampsia for the evaluation of myocardial damage in late-gestation rats. The expressions of cardiac injury markers were analyzed by immunohistochemistry and ELISA. The arterial pressure and myocardial tissue velocities were also measured. The role of interleukin (IL)-6 in RUPP-associated myocardial damage was further explored. The results showed that RUPP rats had significant myocardial damage, as demonstrated by the high expressions of myoglobin, creatine kinase isoenzyme, cardiac troponin I, and brain natriuretic peptide. In addition, RUPP increased the mean arterial pressure and the early transmitral flow velocity to mitral annulus early diastolic velocity ratio (E/Ea). Furthermore, IL-6 deteriorated these abnormalities, whereas inhibition of IL-6 significantly relieved them. In conclusion, our study demonstrated that RUPP rats displayed myocardial damage in an IL-6-dependent manner.