Disección Aórtica Tipo A como diagnóstico diferencial potencialmente letal de dolor torácico: revisión de casos / Type A Aortic Dissection as a potentially lethal differential diagnosis of chest pain: case Review

Chest pain (CP) is a frequent reason for consultation in emergency departments (ED). It responds to a broad spectrum of pathologies, ranging from banal causes to severe conditions with high mortality. The clinician must be able to distinguish prompt when CP is due to severe pathology and thus make a timely intervention for the patient's benefit. Acute Aortic Syndrome (AAS) is one of the potentially fatal causes of CP. Within this syndrome, we find aortic dissection (AD), intramural hematoma and atherosclerotic penetrating ulcer. AD is the most frequent presentation of AAS. Although it is not a common condition, its high lethality and low suspicion make it of particular interest as a differential diagnosis of CP. The following are two clinical cases of AD of the ascending aortic treated at the Hospital Regional de Talca (HRT) to analyse the clinical characteristics that help to differentiate this condition, the main electrocardiographic and imaging findings, as well as some of its complications and management.

Síndrome coronario agudo en el servicio de emergencias del Hospital Universitario Clínico Quirúrgico Comandante Faustino Pérez Hernández, de Matanzas

RESUMEN Introducción: el infarto agudo de miocardio con elevación del segmento ST como parte del síndrome coronario agudo, es una afección frecuente que cursa con una elevada mortalidad. En los últimos años, las enfermedades cardiovasculares han constituido la primera causa de muerte en Cuba, y en 2018 lo fueron en la provincia de Matanzas. Objetivo: caracterizar la morbimortalidad de los pacientes atendidos con síndrome coronario agudo. Materiales y métodos: se realizó un estudio transversal, descriptivo de 106 pacientes ingresados con diagnóstico de síndrome coronario agudo en la Unidad de Cuidados Intensivos Emergentes del Hospital Universitario Clínico Quirúrgico Comandante Faustino Pérez Hernández, de Matanzas, en 2019. Resultados: 83 % de los pacientes llegaron en trasporte sanitario a la Unidad de Emergencia. El grupo de edad más afectado fue el de 70 a 79 años (28,30 %). Predominó el sexo masculino, con 51,89 %. El síndrome coronario agudo con elevación del segmento ST prevaleció sobre el síndrome coronario agudo sin elevación del segmento ST, en un total de 58 pacientes. El mayor número de casos se diagnosticó en los meses de invierno y en horas de la mañana. Prevaleció el tratamiento trombolítico en las primeras seis horas de iniciados los síntomas. Se demostró la desaparición del dolor y la regresión de los cambios electrocardiográficos como resultados de la reperfusión. Las arritmias malignas constituyeron la principal causa de muerte en los pacientes no trombolizados. Conclusiones: el uso de la trombólisis en servicios de emergencias disminuyó la mortalidad en las primeras horas, por enfermedades cardiovasculares, en la provincia de Matanzas en 2019.

ABSTRACT Introduction: Acute myocardium infarct with elevation of the ST segment as a part of the acute coronary syndrome, is a frequent disease that causes a high mortality. In the last years, cardiovascular diseases have constituted the first cause of death in Cuba, and in 2018 they were in the province of Matanzas. Objective: to characterize morbidity and mortality in patients attended with acute coronary syndrome. Materials and methods: a cross-sectional, descriptive study was carried out in 106 patients admitted with diagnosis of acute coronary syndrome in the Unit of Emergent Intensive Care of the Teaching Clinical-surgical Hospital Comandante Faustino Perez Hernandez, of Matanzas, in 2019. Results: 83 % of patients arrived in sanitary transportation to the Emergency Unit. The most affected age group was the one aged 70-79 years (28.30 %). Male sex predominated, with 51.89 %. Acute coronary syndrome with elevation of ST segment prevailed over the acute coronary syndrome without elevation of the ST segment, in a total of 58 patients. The biggest number of cases was diagnosed in the winter months and in the morning. Thrombolytic treatment prevailed in the first six hours after the beginning of the symptoms. There it was demonstrated the disappearance of the pain and the regression of the electrocardiographic changes as a result of the reperfusion. Malignant arrhythmias were the main causes of death in non thrombolyzed patients. Conclusions: the use of thrombolysis in emergency services diminished mortality caused by cardiovascular diseases in the first hours in the province of Matanzas in 1919.

Complexus cordis / Complexus cordis

Resumen El estudio científico del corazón nos ha permitido conocer su estructura y función profundamente, mediante la fragmentación y el análisis de sus partes, atendiendo a las pautas del método que tantos logros nos ha dado. Sin embargo, al momento de volver a ensamblar esos fragmentos analizados nos percatamos de que algo falta; simplemente la suma de las partes no hace al todo. Es así que, desde hace décadas, numerosos científicos han estudiado estrategias novedosas que permitan entender los fenómenos naturales desde modelos más incluyentes, abiertos e integradores, que atiendan con cercanía a las interacciones más que a los componentes. De esta manera, observamos que muchas variables suelen transgredir el plano convencional y parten hacia la no linealidad y la fractalidad, formando un tejido complejo que mantendrá su estructura mientras termodinámicamente sea viable. Así, en este documento se muestra la manera en que el estudio no lineal de la dinámica compleja cardiovascular comienza a darnos luz en muchas de las preguntas que a diario se plantea el cardiólogo clínico.

Abstract The science-based study of the heart has allowed us to know its structure and function deeply, through the fragmentation and analysis of its parts, following the guidelines that so many achievements have given to us. However, at the time of reassembling those analyzed fragments, we realize that something is missing; the simply sum of the parts is not equal to everything. Thus, for decades, numerous scientists have studied novel strategies that allow us understanding, every natural phenomena from a more inclusive, open and integrative models, which closely address to interactions rather than components. In this way, we can observe how, the behavior of many variables usually transgress the conventional plane and moves towards non-linearity and fractality, making a complex tissue that will maintain its structure while thermodynamically viable. Thus, this document shows the way how, the non-linear study of complex cardiovascular dynamics, begins to give us answers to many questions that the clinical cardiologist poses every day.

Acute Myocardial Infarction in Chinese Medicine Hospitals in China from 2006 to 2013: An Analysis of 2311 Patients from Hospital Data / 中国结合医学杂志

OBJECTIVE@#To assess the trends in characteristics, treatments, and outcomes of acute myocardial infarction (AMI) patients in tertiary Chinese medicine (CM) hospitals in China between 2006 and 2013.@*METHODS@#This retrospective study was based on two nationwide epidemiological surveys of AMI in tertiary CM hospitals during 2 years (2006 and 2013). Patients admitted to the hospital for AMI were enrolled. Hospital records were used as the data source. Case data were derived regarding baseline characteristics, treatments, and outcomes of patients to assess changes from 2006 to 2013. Logistic regression was used to analyze the relationship between prognosis, general influencing factors of disease, and various treatment measures.@*RESULTS@#Totally 26 tertiary CM hospitals in 2006 and 29 tertiary CM hospitals in 2013 (18 were repetitive) were surveyed. A total of 2,311 patients with AMI were enrolled (1,094 cases in 2006 and 1,217 cases in 2013). From 2006 to 2013, the mean age did not significantly change, but the proportion of patients younger than 65 years increased. The prevalence of risk factors such as hypertension, diabetes, and hyperlipidemia also increased. Significant increases were observed in primary percutaneous coronary intervention [20.48% (2006) vs. 24.90% (2013)] and revascularization [36.11% (2006) vs. 52.42% (2013)]. In-hospital mortality decreased from 11.15% in 2006 to 10.60% in 2013. A mortality logistic regression analysis identified reperfusion therapy [odds ratio (OR), 0.222; 95% confidence interval (CI), 0.106-0.464], Chinese patent medicines (OR, 0.394; 95% CI, 0.213-0.727), and CM decoctions (OR, 0.196; 95% CI, 0.109-0.353) as protective factors.@*CONCLUSION@#Reperfusion and revascularization capabilities of tertiary CM hospitals have improved significantly, but in-hospital mortality has not significantly decreased. Efforts are needed to improve medical awareness of AMI and expand the use of CM to reduce in-hospital mortality in China.

A Case of Cardiogenic Cerebral Infarction after Repair of the Post-Myocardial Infarction Ventricular Septal Perforation / 日本心臓血管外科学会雑誌

Post-myocardial infarction ventricular septal perforation (VSP) is one of the lethal complications of transmural myocardial infarction. Although the treatment of VSP mostly requires surgical procedures using heterologous pericardium, thromboembolism rarely occurs in patients who undergo VSP repair. Herein we report the case of a patient who died of sudden massive cerebral infarction two weeks after the surgery. The autopsy findings revealed concaved mural LV thrombus in the dissected heart. It is suspected that the patient died of extensive cerebral infarction due to thromboembolic occlusion of the carotid or central cerebral artery. In the postoperative period after VSP repair, several risk factors for thrombus formation may occur, such as postoperative hypercoagulability due to systemic inflammation by the high operative invasiveness, the presence of foreign material in the impaired left ventricle, or pericardial patch suturing methods. Our clinical experience indicates that meticulous postoperative management may be needed, keeping LV thrombus formation in mind after VSP repair.

Effect of Shuanglong formula on no-reflow in rats with myocardial ischemia/reperfusion / 中国药理学通报

Aim To explore the effect of Shuanglong formula(SLF) on no-reflow in rats with myocardial is-chemia/reperfusion (I/R). Methods The rats were divided into five groups, namely, sham group, I/R group,SLF(5,2.5,1.25 g·kg-1)group. Treatment group received SLF decoction by gavage once a day for five days,while other groups were offered drinking wa-ter by gavage once a day for five days. The rats in I/R group and SLF-pretreated group were induced by iga-tion of left anterior descending coronary artery,and the rats were subjected to ischemia for 4h followed by reperfusion. Sham operation group did not undergo oc-clusion of the coronary artery. After 4 hours' reperfu-sion, real-time myocardial contrast echocardiography was used to monitor regional blood perfusion and cardi-ac functions. Blood was collected from the abdominal aorta and the serum was separated, and the levels of cTnT, CRP, CK and LDH were measured. The myo-cardial no-reflow area and infarction area were assessed by thioflavin S and nitrotetrazolium blue chloride, re-spectively. Results The SLF-pretreated group exhibi-ted significant reductions in the infarct area and no-re-flow area compared with I/R group(P <0.01 or P <0.05). In SLF-pretreated groups, β, A and A·β significantly increased as compared to those in I/R group. The LV anterior wall systolic and diastolic thicknesses (LVAW d/s) were significantly improved in SLF-pretreated group compared with those in I/R group. The LV internal diameter in systole (LVID s) and the LV volume in systole(LV s) were significantly reduced in SLF-pretreated group compared with those in I/R group. The EF, FS and SV were significantly improved in SLF-pretreated group compared with those in I/R group. The comparison between SLF-pretreated group and I/R group showed no significant difference in LDH, CK, cTnT, and CRP levels. Conclusion Shuanglong formula minimizes the sizes of myocardial infarct area and no-reflow area,improving regional my-ocardial blood flow and cardiac function.

La carga económica de las condiciones cardíacas en venezuela / The economic burden of heart conditions in venezuela

En Venezuela, las condiciones cardíacas imponen limitaciones físicas, sociales, financieras y de salud relacionadas con la calidad de vida de los individuos. Objetivos: Este estudio valoró la carga económica de cuatro condiciones cardíacas en Venezuela: hipertensión, insuficiencia cardíaca, infarto de miocardio y fibrilación auricular. Adicionalmente se evaluó el costo-efectividad de la telemedicina y el soporte telefónico estructurado para el manejo de la insuficiencia cardíaca.Métodos: Se utilizó un marco de costo de enfermedad estándar para valorar los costos asociados con las cuatro condiciones en 2015. El análisis evaluó la prevalencia e (en caso de infarto de miocardio) incidencia de las condiciones, los gastos asociados con el tratamiento médico, las pérdidas de productividad por reducción en el empleo, los costos de proveer cuidado formal e informal y la pérdida de bienestar. El análisis estuvo basado en información recolectada mediante una revisión de literatura y estadísticas, y modulación de datos. Todas las entradas de datos y métodos fueron validados mediante la consulta de quince clínicos y expertos en Venezuela. El análisis de costo-efectividad fue basado en un meta-análisis y en una evaluación económica de programas para pacientes con insuficiencia cardíaca dados de alta, valorado desde la perspectiva del Programa Nacional de Salud. Resultados: El infarto de miocardioimpone el mayor costo financiero (3,5 millones de bolívares/553 millones de USD), seguido por hipertensión arterial (3,4 millones de bolívares/539 millones de USD), la insuficiencia cardíaca (3,3 millones debolívares/522 millones de USD) y, finalmente, fibrilación auricular (0,4 miles de millones de bolívares/66 millones de USD). La telemedicina y el soporte telefónico estructurado son intervenciones costo-efectivas para alcanzar mejoras en el manejo de la insuficiencia cardíaca. Conclusiones: Las condiciones cardíacas imponen una pérdida sustancial de bienestar y de costos financieros en Venezuela y deberían ser una prioridad de salud pública

Heart conditions impose physical, social, financial and health related quality of life limitations on individuals in Venezuela. Objectives: This study assessed the economic burden of four main heart conditions in Venezuela: hypertension, heart failure, myocardial infarction, and atrial fibrillation. In addition, the cost-effectiveness of telemedicine and structured telephone support for the management of heart failure was assessed. Methods: A standard cost of illness framework was used to assess the costs associated with the four conditions in 2015. The analysis was informed by a targeted literature review, data scan and modeling. All inputs and methods were validated by consulting fifteen clinicians and other stakeholders in Venezuela. The cost-effectiveness analysis was based on a meta-analysis and economic evaluation of post-discharge programs in patients with heart failure, assessed from the perspective of the National Health Fund. Results: Myocardial infarction imposes the greatest financial cost (3.5 million bolivares/553 million USD), followed by hypertension (3.4 million bolivares/539 million USD), heart failure (3.3 million bolivares/522 million USD) and, finally, atrial fibrillation (0.4 billion bolivares/66 million USD).Telemedicine and structured telephone support are cost effective interventions for achieving improvements in the management of heart failure. The analysis assessed the prevalence and (in the case of myocardial infarction) incidence of the conditions, the associated expenditures on health care treatment, productivity losses from reduced employment, costs of providing formal and informal care, and lost wellbeing. Conclusions: Heart conditions impose substantial loss of wellbeing and financial costs in Venezuela and should be a public health priority(AU)

Disincronía ventricular izquierda en la estimulación septal prolongada / Left ventricular dyssynchrony in prolonged septal stimulation

La estimulación por marcapasos se asocia con eventos adversos graves. En la siguiente serie de casos se evaluó la disincronía mecánica intraventricular izquierda (DMVI) en la estimulación endocárdica prolongada del ventrículo derecho a nivel septal. Se estudiaron 6 personas con marcapasos implantados no antes de un año utilizando SPECT gatillado con 99mTc-MIBI y análisis de fase en reposo. Se registraron variables clínicas, duración del QRS, tasa y modo de estimulación ventricular, presencia y extensión de isquemia y/o infarto, volúmenes cavitarios y FEVI en reposo. Utilizando V-Sync de Emory Cardiac Toolbox se obtuvieron el ancho de banda (AB) y el desvío estándar de fase (DEF) en reposo (grados), comparándolos con una población control. La estimulación endocárdica prolongada en el septum ventricular derecho se asoció con marcada DMVI, aun cuando la función sistólica estaba conservada. Aquellos con FEVI moderada/gravemente disminuida (caracterizados por diámetros cavitarios mayores, infarto o isquemia grave) exhibieron mayor disincronía que aquellos con FEVI conservada/levemente disminuida (AB: 177.3o vs. 88.3o; DEF: 53.1o vs. 33.8o). En los casos con cardiopatía isquémica portadores de marcapasos, el AF es una herramienta válida de potencial utilidad para evaluar la disincronía asociada al infarto y, eventualmente, aportar a la decisión oportuna del pasaje al modo de estimulación biventricular.

Pacemaker stimulation is associated with unpredictable severe cardiac events. We evaluated left ventricular mechanical dyssynchrony (LVMD) during prolonged septal right ventricular pacing. We performed 99mTc-MIBI gated-SPECT and phase analysis in 6 patients with pacemakers implanted at least one year before scintigraphy due to advanced atrioventricular block. Using V-Sync of Emory Cardiac Toolbox we obtained phase bandwidth (PBW) and standard deviation (PSD) from rest phase histogram. Clinical variables, QRS duration, rate and mode of pacing in septal right ventricle wall, chamber diameters, presence and extension of myocardial scar and ischemia and rest LVEF were recorded. Prolonged septal endocardial pacing is associated with marked LVMD, even when systolic function was preserved. More severe dyssynchrony was found in patients with impaired LVEF, higher left ventricle diameters, extensive infarct or severe ischemia than in patients with preserved LVEF (PBW: 177.3o vs. 88.3o; PSD: 53.1o vs. 33.8o). In the patients with ischemic heart disease and pacemaker, gated-SPECT phase analysis is a valid and potentially useful technique to evaluate LMVD associated with myocardial scar and to decide the upgrading to biventricular pacing mode.

The effect of S1PR2/3 during myocardial ischemia-reperfusion injury / 中国法医学杂志

Objective To observe the effect of S1PR2/3 on heart during myocardial ischemia-reperfusion (I/R) in rats. Methods Healthy adult male Sprague-Dawley rats were randomly divided into 7 groups: control group, sham operation group, IR group, IR group treated with DMSO, IR group treated with Cym5541( agonist of S1P3), IR group treated with Cay10444 (antagonist of S1P3), IR group treated with Cay10444/Jte-013 (antagonist both S1P3 and S1P2). In vivo model of myocardial ischemia-reperfusion was established. The hemodynamics, infarction area and mortality was recorded. Results Compared with IR, the S1PR3 antagonist group and S1PR2/3 antagonist group showed signiifcantly reduction of heart rate(HR) and increament left ventricular end-diastolic pressure(LVEDP)(P<0.05). In addition, the infarction area was increased in the S1PR3 antagonist group and S1PR2/3 antagonist treated group (55.7%:28.8%, 51.6%:28.8%), respectively. Treatment with S1PR3 agonist reduced the infarct size compared with IR group(18.6%:28.8%). Blocking S1P2/3 receptors increased IR-induced mortality signiifcantly (53%:22%, P<0.05). Conclusion S1PR2/3 have a beneifcial effect on heart. S1PR2 and S1PR3 were involved in the IR-induced SCD.

Infarto agudo del miocardio más doble lesión mitral en gestante del tercer trimestre / Acute myocardial infarct plus double mitral lesion in a pregnant woman in the third quarter

La incidencia de enfermedad coronaria durante el embarazo es de alrededor de 6,2/100 000. Se ha observado como principales factores de riesgo la edad maternal avanzada, la presencia de los factores de riesgo cardiovascular clásicos, la anemia severa y la necesidad de transfusión posparto. El infarto miocárdico agudo durante el embarazo y el posparto se ha asociado a una mortalidad de entre el 5,7 y el 37 %. Se presentó el caso de una gestante de 27 años de edad, con diagnóstico clínico, electrocardiográfico, enzimático y ecocardiográfico, de infarto agudo del miocardio con supradesnivel del segmento ST, de origen cardioembólico por doble lesión valvular mitral. Sí difirieron los procederes invasivos y la trombolisis, valorando las posibles complicaciones. Se realizó un manejo médico con betabloqueadores, diuréticos tiazídicos e inhibidores de la aldosterona, antiagregantes plaquetarios, anticoagulación con heparinas de bajo peso molecular, nitritos en su momento, hipolipemiantes y omeprazol. Se trataron oportunamente las complicaciones y se interrumpió el embarazo a las 34,2, semanas realizándose cesárea sin complicaciones. Tras su buena evolución, fue dada de alta y se programó la coronariografía en un mes a partir de la fecha de la cesárea.

The coronary disease incidence during pregnancy is around 6.2/100 000. The mainly found risk factors have been: advance maternal age, the presence of classic cardiovascular risk factors, severe anemia and post-labor transfusion necessity. The acute myocardial infarct during pregnancy and post-labor has been associated to 5.7-37 % mortality. We presented the case of a pregnant woman aged 27 years with clinical, electrocardiographic, enzymatic and echocardiographic diagnosis of acute myocardial infarct with St-segment supra elevation, of cardioembolic origin due to a mitral valve double lesion. The invasive procedures and thrombolysis do differ when assessing the possible complications. We carried out a medical management with betablockers, thiazide diuretics and aldosterone inhibitors, platelet antiaggregator, anticoagulation with low molecular weight heparins, nitrites when needed, hypolipidemics and omeprazole. Complications were treated timely and pregnancy was interrupted at 34.2 weeks, carrying out a cesarean without complication. After good evolution, the patient was discharged and coronary angiography was programmed a month after the cesarean.

Emergência hipertensiva nas síndromes coronárias agudas / Acute coronary syndrome in hypertensive emergencies

Há uma forte relação da hipertensão arterial com manifestações clínicas da coronariopatia. A emergência hipertensiva associada a um quadro isquêmico miocárdico agudo, angina instável ou infarto agudo do miocárdio requer tratamento rápido e seguro, para controle dos níveis pressóricos e redução do fenômeno isquêmico. Dentre os recursos terapêuticos disponíveis por via endovenosa, destacam-se a nitroglicerina e os betabloqueadores, ambos contribuindo para melhora do fluxo sanguíneo coronário e, ao mesmo tempo, reduzindo o consumo de oxigênio miocárdico. Os altos níveis de pressão arterial na vigência do infarto agudo do miocárdio tornam-se uma séria contraindicação para o emprego imediato de trombolítico no tratamento de reperfusão e o risco de acidente vascular cerebral é elevado. Portanto, devemos retardar esse tipo de recurso ou utilizar a via percutânea para angioplastia como tratamento ideal.

Arterial hypertension has a strong relationship with clinical manifestation of coronary heart disease. The hypertensive emergency associated with an acute myocardial ischemia, instable angina or an acute myocardial infarct needs a fast and safe procedure, to control the arterial pressure and reduce ischemic phenomenon. Among the available therapeutic resources by intravenous way, we can highlight nitroglycerine and betablockers, in that both reduce myocardial oxygen consumption and improve coronary flow. The high levels of arterial pressure in acute myocardial infarct become a serious contraindication for the immediate use of thrombolytic agents in reperfusion treatment and the risk for stroke is high. Thus, we should delay this action or use percutaneous way for angioplasty as a better treatment.

Caracterización en la atención de urgencia del infarto agudo del miocardio en la provincia de Matanzas / Characterization in the emergency care of the acute myocardial infarct

En Cuba las enfermedades del corazón constituyen la principal causa de muerte desde hace más de cuatro décadas. En la actualidad fallecen cada año más de 20 000 personas, fundamentalmente por la alta letalidad debido al infarto agudo del miocardio. Se realizó una investigación epidemiológica observacional multicéntrica de tipo descriptivo transversal en la provincia Matanzas, con la finalidad de caracterizar el infarto agudo del miocardio y la atención médica de urgencia en los servicios de salud de policlínicos y hospitales, en el diagnóstico, tratamiento y rehabilitación. El estudio abarcó todos los egresos en hospitales desde 1 de junio al 31 de agosto de 2010. Se aplicó por los epidemiólogos de hospitales una encuesta a pacientes y familiares. Se utilizó el Programa Epi-Info. Los resultados fueron predominio del sexo masculino, mayores de 60 años; principales factores de riesgo asociados: la hipertensión arterial, tabaquismo y sobrepeso. La mayor proporción de pacientes llegaron antes de las 6 horas, fue mayor el por ciento de dolor típico, el Killip Kimbal I y la elevación del segmeto ST. El uso del tratamiento trombolítico es bajo, especialmente en la atención primaria de salud, y es elevada la no indicación médica en hospitales. Es baja la indicación de betabloqueadores y los inhibidores de la enzima de conversión de la angiotensina; hay déficit de enzimas séricas cardiacas y de equipos para prueba ergométrica y ecocardiograma con fracción de eyección del ventrículo izquierdo. La letalidad fue adecuada y mejor en los pacientes trombolizados que en los no trombolizados. Los consejos médicos y la indicación de rehabilitación al alta fueron bajos.

In Cuba, the heart diseases have been the main cause of death for more than forty years. Currently, more than 20 000 people die every year, mainly for the high lethality of the acute myocardial infarct. We carried out a multicenter, epidemiologic, observational, cross-sectional descriptive research in the province of Matanzas, with the objective of characterizing the acute myocardial infarct and the medical emergency care in the health services of policlinics and hospitals, in the diagnosis, treatment and rehabilitation. The research included all the cases discharged from hospitals from June 1st to August 31st 2010. An inquire was applied to the patients and their relatives by the hospital epidemiologist. The Epi-Info program was used. The results were a predomination of the male sex, of people aged more than 60 years old; and the main associated risk factors were arterial hypertension, smoking and overweight. Most of the patients arrived before 6 hours had passed; the percentage of typical pain, the Killip Kimbal I and the elevation of ST segment were higher. The usage of the thrombolytic treatment is low, especially in the primary health care, and it is high the no-medical indication in the hospitals. The indication of the beta blockers and the inhibitors of the angiotensin-conversion enzymes are low; there is a deficit of cardiac serum enzymes and equipment for exercise tests and echocardiograms. The lethality was adequate, better in the thrombolyzed patients than in those who were non thrombolyzed. The medical advices and the indication of rehabilitation were poor.

Infarto agudo do miocárdio e injeção intramiocárdica experimental em cães: estudos clínico, enzimático, eletrocardiográfico e ecocardiográfico / Experimental acute myocardial infarction in dogs: clinic, enzymatic, electrocardiographic and echocardiographic studies

Os eventos isquêmicos em cães são incomuns, porém podem estar sendo subnotificados. Avaliou-se o infarto agudo do miocárdio (IAM) clinicamente, por meio de eletrocardiografia (ECG), eletrocardiografia contínua (EC), ecocardiografia (ECO), enzima creatina quinase (CK), enzima creatina quinase fração MB (CK-MB) e anátomo-histologicamente em cães sem raça definida, e observou-se a ocorrência de arritmias após injeção intramiocárdia por EC. O IAM foi obtido após a ligadura da coronária descendente anterior. Os animais apresentaram ao ECO dilatação da câmara esquerda e aumento do índice de desempenho miocárdico. Ao ECG houve desnivelamento de ST nas derivações pré-cordiais V1 e V2. No EC observaram-se arritmias ventriculares graves e supradesnivelamento de ST. As enzimas CK e CK-MB aumentaram significativamente, sendo que os picos de CK-MB e de CK ocorreram seis horas e 12 horas, respectivamente, após o IAM. Na análise histológica constatou-se infarto da parede inferior do ventrículo esquerdo e substituição do tecido muscular por tecido fibroso. Avaliou-se a injeção intramiocárdica por EC que pode servir como via terapêutica cardíaca, não sendo observado aumento das arritmias ventriculares após a injeção no miocárdio infartado. O infarto em cães pode ser detectado pelos exames cardíacos disponíveis, e a injeção intramiocárdica é uma via terapêutica cardíaca possível.

Ischemic events in dogs are uncommon; however, this may be under-reported. The myocardial infarction was created by left anterior descending coronary ligation in healthy mongrel dogs in clinical and laboratorial exams. These dogs were evaluated clinically, electrocardiography (ECG), through ambulatory electrocardiography (AE), echocardiography (ECO), creatine kinase enzyme (CK), creatine kinase MB fraction enzyme (CK-MB) and histopathologically. Even in these animals we observed the occurrence of arrhythmia after intramyocardial injection by AE. The animals exhibited left ventricular chamber enlargement and increase in myocardial performance index at ECO. In ECG, there were deviations in ST segment in the precordial leads V1 and V2. CK and CK-MB showed high increase, CK and CK-MB peaks occurred six and 12 hours after infarction, respectively. Histopathology of the infarction in the inferior wall of the left ventricle and replacement of muscle tissue by fibrous tissue were seen. Furthermore, intramyocardial injection that may be used for therapeutic purposes was evaluated by AE, which demonstrated no increase in the ventricular arrhythmias. Therefore, myocardial infarction in dogs can be detected with the tests available and intramyocardial injection can be used as a therapeutic way.

Factores asociados a la hipertensión arterial en ancianos del Policlínico Milanés. 2003- 2006 / Factors associated to the arterial hypertension in elder people from the Milanés Policlinic. Years 2003-2006

Se realizó un estudio observacional, prospectivo y descriptivo, con el objetivo de caracterizar el comportamiento de la hipertensión arterial de la población anciana, conviviente en un área de 500 metros en la periferia del Policlínico Universitario Milanés, empleándose la encuesta del grupo de investigación 10/66, avalada internacionalmente, a 901 ancianos. Los datos fueron procesados y se expresaron los resultados en tablas y gráficos. Resultó significativo que la enfermedad afectó predominantemente al sexo femenino, en las edades entre 70 y 74 años, y entre las enfermedades asociadas a la hipertensión se destacaron las enfermedades cardíacas, entre las más frecuentes se presentaron las arritmias, la angina y el infarto agudo de miocardio, así como las enfermedades cerebrales, existiendo un predominio de la demencia, seguido del ictus. Se arribó a la conclusión de que la hipertensión arterial presenta una alta prevalencia en la población estudiada y predispone todas las variantes de enfermedad vascular con mayor frecuencia en los ancianos.

We made a prospective, descriptive, observational study, with the objective of identifying the factors associated to the arterial hypertension in the elder people population living in an area of 500 m in the periphery of the Milanés Teaching Hospital, using the survey of the investigation group 10/66, internationally validated, applied to 901 elder people. Data were processed and the results were shown in tables and graphics. It was significant that the disease affected predominantly the female genre, in ages between 70 and 74 years-old and more than 80 years-old. Among the diseases associated to the hypertension stood out the heart diseases, and the most frequent of theme were: the arrhythmias, the angina and the myocardial infarct, and also the cerebral diseases, with a predominance of the dementia followed by the ictus. We arrived to the conclusion that the arterial hypertension has a high prevalence in the studied elder population.

Pre-hospital attitudes adopted by patients faced with the symptoms of acute myocardial infarction / Atitudes pré-hospitalares adotadas por pacientes frente aos sintomas de infarto agudo do miocárdio / Actitudes prehospitalarias adoptadas por pacientes frente a los síntomas de infarto agudo del miocardio

This case series aimed to evaluate the behavior adopted by patients during the pre-hospital phase of acute myocardial infarction (AMI). A total of 115 AMI sufferers with ST-segment elevation were evaluated. The chi-square and Fisher's exact tests were applied. The individuals that did not associate the symptoms with cardiovascular disease most often attributed them to the following sources: gastrointestinal (38 percent), musculoskeletal (29.7 percent), food and/or medication poisoning (8.5 percent) and arising from the respiratory apparatus (6.3 percent). The proportion of major outcomes and of patients that arrived in the emergency department after 12 hours was higher among women, individuals with monthly income of up to one minimum wage, those who used analgesics and did not associate the symptoms with cardiovascular disease. It was found that individuals in unfavorable socioeconomic conditions, who interpreted the symptoms incorrectly, arrived later at the emergency department and had worse intra-hospital outcomes.

Esta série de casos teve o objetivo de avaliar as condutas adotadas pelos pacientes, durante a fase pré-hospitalar do infarto agudo do miocárdio (IAM). Avaliaram-se 115 indivíduos portadores de IAM, com supradesnivelamento do segmento ST. Foi aplicado o teste qui-quadrado e o teste exato de Fisher. Os indivíduos que não associaram os sintomas à doença cardiovascular atribuíram, mais frequentemente, às seguintes origens: gastrointestinal (38 por cento), osteomuscular (29,7 por cento), intoxicação alimentar e/ou medicamentosa (8,5 por cento) e decorrentes do aparelho respiratório (6,3 por cento). A proporção de desfechos maiores e de pacientes que chegaram à emergência após 12 horas foi mais elevada entre mulheres, indivíduos com renda mensal de até um salário mínimo, que usaram analgésicos e não associaram os sintomas à doença cardiovascular. Constatou-se que indivíduos em condições socio-conômicas desfavoráveis, que interpretaram os sintomas de forma incorreta, chegaram mais tardiamente à emergência e apresentaram piores desfechos intra-hospitalares.

Esta serie de casos tuvo el objetivo de evaluar las conductas adoptadas por los pacientes durante la fase prehospitalaria del infarto agudo del miocardio (IAM). Se evaluaron 115 individuos portadores de IAM con el segmento ST supradesnivelado. Fue aplicada la prueba Chi-cuadrado y la prueba exacta de Fisher. Los individuos que no asociaron los síntomas a la enfermedad cardiovascular la atribuyeron más frecuentemente a los siguientes orígenes: gastrointestinal (38 por ciento), osteomuscular (29,7 por ciento), intoxicación alimentar y/o medicamentosa (8,5 por ciento) y provenientes del aparato respiratorio (6,3 por ciento). La proporción de resultados más graves y de pacientes que llegaron a la emergencia después de 12 horas fue más elevada entre mujeres, individuos con renta mensual de hasta un salario mínimo, que usaron analgésicos y no asociaron los síntomas a la enfermedad cardiovascular. Se constató que individuos en condiciones socioeconómicas desfavorables, que interpretaron los síntomas de forma incorrecta, llegaron más tarde a la emergencia y presentaron peores resultados intrahospitalarios.

Tirofiban in percutaneous coronary intervention of patients with acute non-ST segment elevation myocardial infarct: Safety and efficacy / 第二军医大学学报

Objective: To evaluate the efficacy and safety of tirofiban, a platelet glycoprotein IIb/ IIIa Inhibitor, in percutaneous coronary intervention (PCI) of patients with acute non-ST segment elevation myocardial infarct (NSTEMI). Methods: A total of 114 patients with acute NSTEMI were enrolled in the trial from Sep. 2005 to Jan. 2007; they were randomly divided into 2 groups: tirofiban group (n=57) and placebo group (n=57). Patients in tirofiban group were given tirofiban for 24 h after PCI. All patients were routinely given heparin, aspirin and clopidogrel before CPI. The composite occurrence of death, myocardial infarction (MI), need for target vessel revascularization (TVR) after PCI, and the adverse effects (hemorrhage and thrombocypenia) were compared between the 2 groups. Results: One (1.8%) patient had angina pectoris and the other (1.8%) developed subacute thrombus in control group within 24 h after PCI; there was no such event in the tirofiban group. Two (3.6%) patients developed angina pectoris and 2 (3.6%) developed subacute thrombus within 30 days after PCI in control group; one patient (1.8%) in birofiban group developed angina pectoris and one patient in birofiban group developed subacute thrombus. Each group had one case (1.8%) of upper digestive tract bleeding during hospitalization. No intracranial hemorrhage, skin/mucosa hemorrhage, thrombocytopenia, or death occurred in the 2 groups. Intravenous tirofiban treatment reduced the composite occurrence of death of NSTEMI patients after PCI (P<0.05). There was no significant difference in occurrence of complications such as intracranial hemorrhage, skin/mucosa hemorrhage, or thrombocytopenia between the 2 groups. Conclusion: Intravenous tirofiban treatment after PCI can reduce the composite occurrence of death, MI, and need for TVR without increasing the adverse reactions of the drugs; it is safe and effective in patients undergoing early coronary stenting.

Una mirada desde los servicios de salud a la nutrición de la niñez mexicana: III. Carga económica y en salud de la obesidad en niños mexicanos. Proyecciones de largo plazo / A look from health services to the nutrition of Mexican childhood: III. Economic and health burden of Mexican childhood obesity. Long-term projections

Objetivo. Estimar la carga económica y en salud de la obesidad en niños mexicanos en un horizonte de largo plazo. Estimación de costos médicos atribuibles a la obesidad en niños mexicanos durante 2006-2050. Una cohorte hipotética de 5-11 años de edad obesa se modeló con base en prevalencia, incidencia y evolución clínica. Los costos considerados fueron por diabetes mellitus tipo 2 e hipertensión arterial. En 2015 se presentarían los primeros casos de diabetes mellitus y de hipertensión arterial. Cuando el primer grupo de niños cumpla 40 años aumentarán considerablemente las complicaciones de la obesidad. Para 2050, 67.3% de la cohorte tendría obesidad. El costo de atención a la obesidad será de $57 678 millones de pesos. La magnitud de la obesidad se reporta en niveles preocupantes en todas las edades, con costos que consumirán buena parte de los recursos del sistema de salud.

Objective. To estimate the economic and health burden of childhood obesity in Mexican population over the long term. This study estimates healthcare costs due to child obesity in Mexican children from 2006-2050. A hypothetic 5-11-year-old obese cohort based on prevalence, incidence, and clinical development data was modelled. Cost allocation considerations include type 2 diabetes mellitus and high blood pressure. The first cases of diabetes mellitus and with a risk of high blood pressure appears in the year 2015. When the first group of children is 40 years old, there is a considerable increase in obesity-related complications. A total of 67.3% of the cohort would have obesity in the year 2050. The cost of obesity care would be $57 678 million Mexican pesos. The magnitude of obesity reported is at worrisome levels in all age groups, showing costs that would consume a high percentage of the health system’s resources.

Infarto de atrio y ventrículo derecho fisiopatología, diagnóstico y tratamiento / Atrium and right ventricle infarct physiopathology, diagnosis and treatment

Los síndromes coronarios agudos que involucran a la parte derecha del corazón se acompañan de una elevada mortalidad, una compleja evolución clínica y un prolongado tiempo de hospitalización, así como de complicaciones mecánicas y eléctricas frecuentes. Es importante reconocer los signos y los síntomas relacionados con la extensión del proceso isquémico a las cavidades derechas, lo cual permite aplicar un tratamiento adecuado, que mejora el pronóstico a corto y largo plazo. En esta revisión se pretenden incluir los aspectos más relevantes relacionados con el diagnóstico, el pronóstico y el tratamiento de esta enfermedad.

Acute coronary syndromes involving the right side of the heart are associated with high mortality, a complex clinical evolution and lengthy hospitalization, as well as with frequent mechanical and electrical complications. It is important to recognize the signs and symptoms associated with the spread of ischemic disease to the right heart chambers, for giving the patient an appropriate treatment which can improve short-term and long-term prognosis. The purpose of this review is to summarize key aspects of the diagnosis, prognosis and treatment of this condition.

Protocolo Cask en pacientes con infarto agudo de miocardio, estudio descriptivo de un grupo de pacientes, período 1999-2001 / Cask protocol in patients with acute myocardial infarction, descriptive study of a group of patients, period 1999-2001

Tipo de estudio: descriptivo, clínico, transversal, prospectivo. Objetivo: Usar terapéuticamente el protocolo CASK (Captopril, ácido acetilsalicílico, trombolisis con estreptoquinasa SK), en todo paciente con diagnóstico de infarto de miocardio trasmural. Métodos: Estudio de cohorte con seguimiento de 2 años de pacientes ingresados por infarto agudo de miocardio en los años 1999, 2000 y 2001 en la Unidad de Cuidados Intensivos del hospital Dr. Teodoro Maldonado Carbo de la ciudad de Guayaquil, Ecuador. Se analizó el tiempo trascurrido del evento coronario agudo, infarto de miocardio y su periodo óptimo de inicio de la fibrinólisis con estreptoquinasa SK, criterios de reperfusión e índice de morbimortalidad del evento coronario. Resultados: Un universo de 263 pacientes, con infarto de miocardio ingresados: 86% fueron tratados con el protocolo Cask, durante las primeras 6 horas del evento coronario, Captopril 6.25mg vo stat, BID, ácido acetilsalicílico tab. 100mg ,150mg vo stat, día, y fibrinólisis con estreptoquinasa SK, 15000.000ui iv en 100cc de dextrosa al 5% pasar en una hora, período óptimo alcanzado como lo recomienda el Colegio Americano de Cardiología. El resto 14%, no recibieron fibrinólisis por ser tardíos, de 12-24 horas, debutan con infarto de miocardio subendocárdico, por no tener elevación del segmento ST, contraindicación 2%, retraso prehospitalario, > 24 horas, u otras causas 3%; los pacientes tratados presentaban los factores de riesgo cardiaco mayores, el retraso medio de administrar el fibrinolítico SK, fue de 270 minutos, en cuarto lugar en relación al estudio PRÍAMHO.

Study type: descriptive, clinical, transversal, prospective. Objectives: The therapeutic use of the CASK protocol, Captopril, acetylsalicylic acid, trombolysis with streptoquinasa SK, in all patients with diagnosis of trasmural myocardial infarct. Methods: Cohort study with a 2 year follow up of patients admitted with acute myocardial infarction in the years 1999, 2000, 2001 to the Intensive Care Unit of the Teodoro Maldonado Carbo Hospital of Guayaquil, Ecuador. The time of the acute coronary event, myocardial infarction, and its optimal period for beginning of fibrinolysis with streptoquinasa SK, reperfusion criteria and index of morbimortality were analyzed. Results: An universe of 263 patients, admitted with myocardial infarct: 86% were treated with the Cask protocol, during the initial 6 hours of the coronary event, Captopril 6.25mg vo stat, BID, acetylsalicylic acid tab.100mg, 150mg vo stat, day, and fibrinolysis with streptoquinasa SK, 15000.000ui iv in 100 dextrose cc to 5% passed in 1 hour, period optimal as recommended by the American School of Cardiology. Resting 14% did not receive fibrinolysis, for being late, of 12-24 hours, debut with subendocardic myocardial infarct, for not having elevation of the ST segment, contraindication 2%, prehospitalarian delay, >24 hours, or other causes 3%, treated patients presented the highest cardiac risk factors, median delay of administering the fibrinolytic SK, was of 270 minutes, in 4th place in relation to the PRÍAMHO study.

Células-tronco: um novo caminho para a humanidade e um novo cuidado para os enfermeiros-um estudo de caso / Stemcell therapy for cardiolgy: a new path to humanity and a new care for nurses-a case report

Durante o atendimento realizado a pacientes portadores de Infarto Agudo do Miocárdio (IAM), percebemos a complexidade de sua patologia. Atualmente com a utilização da terapia celular houve uma nova esperança para pacientes com este diagnóstico. Assim realizamos este estudo para aprimorarmos nossos conhecimentos, enquanto enfermeiros, à referida terapia e seus supostos benefícios.Trata-se do relato de caso de um paciente admitido em uma Unidade Coronariana(UCOR) com diagnóstico de Infarto Agudo do Miocárdio (IAM) anterior extenso e sua inclusão no protocolo para manipulação de Células Tronco (CT) de medula óssea (MO). O enfermeiro tem papel fundamental no atendimento deste paciente, esclarecendo suas dúvidas, atendendo expectativas, além de manter participação ativa nos procedimentos intra-hospitalares. A coleta de dados traduziu-se em pesquisa em prontuário e observação da evolução clinica. Durante todo este processo priorizamos as ações do nosso cuidado tentando avaliar as necessidades apresentadas pelo paciente.

During the process of care of patients who suffered acute myocardial infarction we observed how complex is this disease. Nowadays, stemcell therapy opens a new horizon and hope for these patients. We conducted this study to improve our knowledge as nurses in face of this new therapeutic model. This study is a case report of a patient who suffered an anterior acute myocardial infarction and was admitted in a coronary care unit and enrolled in stemcell transplantation study protocol. The nurse has a fundamental role in the process of care during the hospitalization period clarifying the patient's doubts and perspectives. The data was collected in patient's record.During the patient length of stay we emphasized our nursing care based on his individual value.