Características metabólicas en infarto agudo de miocardio

Introducción: las alteraciones del control glicémico y los lípidos son causas principales de enfermedad cardiovascular. Sin embargo, los patrones metabólicos en el infarto agudo de miocardio no están bien establecidos. Objetivo: el propósito de esta investigación es describir las características metabólicas en pacientes admitidos con infarto de miocardio. Clasificamos los pacientes según el cociente HDL-c/LDL-c y perfiles lipídicos. Método: estudio observacional, descriptivo, retrospectivo en pacientes admitidos al Servicio de Cardiología con infarto agudo de miocardio durante un año. Resultados: 97 pacientes fueron incluidos, predominó el sexo masculino (67%) y el promedio de edad fue 59 años (SD, ±9.9). Las características metabólicas fueron las siguientes: mediana de hemoglobina glicosilada 6.2% (IQR, 5.8-7.5), glucemia en ayunas 107 mg/dL (IQR, 99-152), colesterol total 201 mg/dL (IQR, 165-223), colesterol asociado a lipoproteínas de baja densidad (LDL-c) 123 mg/dL (IQR, 96-146), colesterol asociado a lipoproteínas de alta densidad (HDL-c) 38.2 mg/dL (IQR, 31.8-45.4) y triglicéridos (TG) 161 mg/dL (IQR, 103-234). El cociente HDL-c/LDL-c <0.4 estuvo presente en 75% de los pacientes. Los patientes fueron clasificados según perfiles lipídicos, donde el perfil L-1 [HDL-c ≤40, LDL-c <150, TG <200] y L-2 [HDL-c >40, LDL-c <150, TG <200] en conjunto representaron la mitad de la muestra. Conclusiones: prediabetes, bajos niveles de HDL-c y un cociente HDL-c/LDL-c <0.4 fueron hallazgos frecuentes en infarto de miocardio. La relación entre patrones metabólicos y el riesgo de infarto de miocardio debe ser investigada. (provisto por Infomedic International)

Introduction: Alterations in glycemic control and lipids are the main causes of cardiovascular disease. However, metabolic patterns in acute myocardial infarction are not well established. Objective: The purpose of this research is to describe the metabolic characteristics of patients admitted with myocardial infarction. We classified patients according to HDL-c/LDL-c ratio and lipid profiles. Method: observational, descriptive, retrospective study in patients admitted to the Cardiology Department with acute myocardial infarction for one year. Results: 97 patients were included, males predominated (67%) and the mean age was 59 years (SD, ±9.9). Metabolic characteristics were as follows: median glycosylated hemoglobin 6.2% (IQR, 5.8-7.5), fasting blood glucose 107 mg/dL (IQR, 99-152), total cholesterol 201 mg/dL (IQR, 165-223), low-density lipoprotein cholesterol (LDL-c) 123 mg/dL (IQR, 96-146), high-density lipoprotein-associated cholesterol (HDL-c) 38.2 mg/dL (IQR, 31.8-45.4) and triglycerides (TG) 161 mg/dL (IQR, 103-234). The HDL-c/LDL-c ratio <0.4 was present in 75% of patients. Patients were classified according to lipid profiles, where the L-1 HDL-c ≤ 40, LDL-c <150, TG <200] and L-2 ]HDL-c >40, LDL-c <150, TG <200] together represented half of the sample. Conclusions: prediabetes, low HDL-c levels, and an HDL-c/LDL-c ratio <0.4 were frequent findings in myocardial infarction. The relationship between metabolic patterns and the risk of myocardial infarction should be investigated. (provided by Infomedic International)

Solitary bone plasmacytoma as posterior fossa cranial neoplasia, presentation of two clinical cases.

BACKGROUND: Solitary bone plasmacytoma is a plasmatic cell dyscrasia; its presentation in the posterior fossa is very rare. CASE DESCRIPTION: We present two cases, a 59-year-old male and a 50-year-old female, both with heterogeneous clinical presentation. One had symptoms compatible with endocranial hypertension, and the other presented with a hemispheric cerebellar syndrome and ipsilateral trigeminal neuralgia. They were both related to an intraosseous tumor of the occipital region near the torcula with large extension to the posterior fossa. The diagnosis of a plasma cell neoplasm arising from the diploe of the squamous portion of the occipital bone was confirmed with immunohistochemistry. CONCLUSION: The treatment for a cranial tumor that is suspected to be a solitary bone plasmacytoma requires a multidisciplinary team to diagnose, plan a total resection, and after surgery continue with the follow-up of the patient. Solitary bone plasmacytoma should be considered as a differential diagnosis for a tumor that produces cancellous bone widening without sclerotic borders.

ECG-Based Identification of Sudden Cardiac Death through Sparse Representations.

Sudden Cardiac Death (SCD) is an unexpected sudden death due to a loss of heart function and represents more than 50% of the deaths from cardiovascular diseases. Since cardiovascular problems change the features in the electrical signal of the heart, if significant changes are found with respect to a reference signal (healthy), then it is possible to indicate in advance a possible SCD occurrence. This work proposes SCD identification using Electrocardiogram (ECG) signals and a sparse representation technique. Moreover, the use of fixed feature ranking is avoided by considering a dictionary as a flexible set of features where each sparse representation could be seen as a dynamic feature extraction process. In this way, the involved features may differ within the dictionary's margin of similarity, which is better-suited to the large number of variations that an ECG signal contains. The experiments were carried out using the ECG signals from the MIT/BIH-SCDH and the MIT/BIH-NSR databases. The results show that it is possible to achieve a detection 30 min before the SCD event occurs, reaching an an accuracy of 95.3% under the common scheme, and 80.5% under the proposed multi-class scheme, thus being suitable for detecting a SCD episode in advance.