ABSTRACT Introduction: Half of the patients suffering from sudden cardiac death (SCD) have no history of known heart disease. However, most suffer from asymptomatic ischemic heart disease. The most effective approach to prevent SCD in the general population is the accurate quantification of individual risk for ischemic heart disease, followed by control of risk factors. Objective: To determine the association between some cardiovascular diseases and coronary risk factors with the occurrence of SCD. Method: An analytical, longitudinal and retrospective study was carried out with 261 patients who died from SCD at the Hospital Enrique Cabrera (Cuba), between January 2014 and March 2018. The possible association between history of cardiovascular disease and coronary risk factors with the occurrence of SCD was sought. Results: History of coronary artery disease (CAD) (p=0.01) was associated with the appearance of SCD. Age over 70, family history of CAD, and high blood pressure were found to be risk factors associated with the occurrence of SCD. Smoking was a risk factor in the group of patients with no known history of CAD. Conclusions: Coronary artery disease was the cardiovascular condition most associated with the appearance of SCD. There were both modifiable and non-modifiable coronary risk factors that were associated with the occurrence of SCD.

RESUMEN Introducción: La mitad de los pacientes que sufren muerte súbita cardíaca (MSC) no tienen antecedentes de enfermedad cardíaca conocida; sin embargo, la mayoría padecen de cardiopatía isquémica asintomática. El enfoque más eficaz para prevenir la MSC en la población general reside en la cuantificación del riesgo individual de sufrir cardiopatía isquémica, seguida del control de factores de riesgo. Objetivo: Determinar la asociación entre algunas enfermedades cardiovasculares y los factores de riesgo coronario con la ocurrencia de MSC. Método: Se realizó un estudio analítico, longitudinal y retrospectivo con 261 pacientes fallecidos por MSC en el Hospital Enrique Cabrera (Cuba), entre enero de 2014 y marzo de 2018. Se buscó asociación entre el antecedente de enfermedades cardiovasculares y los factores de riesgo coronario con la ocurrencia de MSC. Resultados: El antecedente de enfermedad arterial coronaria (EAC) (p=0,01) se asoció con la aparición de MSC. La edad mayor de 70 años, el antecedente familiar de EAC y la hipertensión arterial resultaron ser factores de riesgo que se asociaron con la ocurrencia de MSC. El hábito de fumar se comportó como factor de riesgo en el grupo de pacientes que no tenían antecedentes conocidos de EAC. Conclusiones: La enfermedad arterial coronaria fue la afección cardiovascular que mayor asociación tuvo con la aparición de MSC. Existieron factores de riesgo coronarios, tanto modificables como no modificables, que tuvieron asociación con la ocurrencia de MSC.

ABSTRACT The objective of this study was to evaluate the performance, carcass yield and growth curves of different commercial strains of broiler chicken. 2400 day-old chicks, males and females of the Cobb500, RossAp95, Hubbard Flex and a new Francesa line were used. The birds were distributed in a completely randomized design in a factorial arrangement 4x2 (line x sex), forming eight treatments with 10 replicates each. The birds were fed with the same diet. Feed intake, weight gain and feed conversion were determined. At 42 days, it was determined at the request of carcass and cuts of each lineage. The Gompertz model was applied to a growth curve for each line. The RossAP95 line shows the best performance results. Growth curves showed lower sexual dimorphism in the Hubbard Flex line. The Hubbard Flex strain presented higher thigh yield and a Cobb500 genetics the higher breast yield. Based on the results found it was observed that the RossAP95 performed better. Hubbard Flex line exhibits the least sexual dimorphism. The Cobb500 have better yield for breast and as Hubbard Flex birds greater thigh yield.