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Background: Surgical care holds significant importance in healthcare, especially in low and middle-income countries, as at least 50% of the 4.2 million deaths within the initial 30 days following surgery take place in these countries. The Lancet Commission on Global Surgery proposed six indicators to enhance surgical care. In Colombia, studies have been made using secondary data. However, strategies to reduce perioperative mortality have not been implemented. This study aims to describe the fourth indicator, perioperative mortality rate (POMR), with primary data in Colombia. Methods: A multicentre prospective cohort study was conducted across 54 centres (hospitals) in Colombia. Each centre selected a 7-day recruitment period between 05/2022 and 01/2023. Inclusion criteria involved patients over 18 years of age undergoing surgical procedures in operating rooms. Data quality was ensured through a verification guideline and statistical analysis using mixed-effects multilevel modelling with a case mix analysis of mortality by procedure-related, patient-related, and hospital-related conditions. Findings: 3807 patients were included with a median age of 48 (IQR 32-64), 80.3% were classified as ASA I or II, and 27% of the procedures had a low-surgical complexity. Leading procedures were Orthopedics (19.2%) and Gynaecology/Obstetrics (17.7%). According to the Clavien-Dindo scale, postoperative complications were distributed in major complications (11.7%, 10.68-12.76) and any complication (31.6%, 30.09-33.07). POMR stood at 1.9% (1.48-2.37), with elective and emergency surgery mortalities at 0.7% (0.40-1.23) and 3% (2.3-3.89) respectively. Interpretation: The POMR was higher than the ratio reported in previous national studies, even when patients had a low-risk profile and low-complexity procedures. The present research represents significant public health progress with valuable insights for national decision-makers to improve the quality of surgical care. Funding: This work was supported by Universidad del Rosario and Fundación Cardioinfantil-Instituto de Cardiología grant number CTO-057-2021, project-ID IV-FGV017.
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Background Secondary peritonitis (SP) arises from direct contamination of the peritoneum by spillage from the gastrointestinal or urogenital tracts. Objective This research aimed to evaluate the clinical and epidemiological characteristics of patients with SP undergoing surgical management and to study potential factors associated with morbidity and mortality in a reference hospital in Eastern Venezuela. Methodology A retrospective cross-sectional study was conducted on patients aged 18 to 80 undergoing surgical treatment for SP at "Dr. Luis Razetti" University Hospital in Barcelona, Anzoátegui state, Venezuela, between January and December 2022. We calculated odds ratios to assess mortality risks based on the presence of postoperative complications. Results Analysis of 168 adult patients revealed a predominantly male population (n=110, 65.5%) with a mean age of 35.63 years (SD=14.34). Generalized peritonitis was observed in 126 cases (75%), primarily originating from the appendix (n=117, 69.6%). Postoperative complications occurred in 18 patients (10.7%); sepsis represented the most common associated complication (n=10, 43.5%). Patients with secondary peritonitis associated with acute appendicitis had a lower mortality rate (p=0.042). Additionally, laparotomy was associated with higher frequencies of complications (p=0.001) and mortality (p=0.025), while open appendectomy showed lower frequencies of complications (p=0.002) and mortality (p=0.035). Notably, patients experiencing postoperative complications had a significantly elevated risk of mortality (OR=98, 95% confidence interval = 21.74 - 441.69). Conclusion The most common source of SP was appendicular. Patients undergoing exploratory laparotomy for the management of SP had a higher frequency of complications and mortality, whereas those undergoing open appendectomy had lower rates of complications and mortality.
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Background Postoperative complications (POC) are undesirable consequences of surgery and are a major area of concern adversely affecting the quality of surgical care and patient safety. Emergency surgery has been observed to have a higher incidence of different POC. The analysis of POC is of great importance due to their impact on the quality of life of patients and because they have become an indicator to measure the quality of hospital services. Objective This study aimed to describe the POC of emergency surgeries in patients from the general surgery department of a referral hospital in eastern Venezuela. Methodology A cross-sectional retrospective study was conducted, including patients undergoing emergency surgery at "Dr. Luis Razetti" University Hospital, Barcelona, Venezuela, between November 2022 and May 2023. Results Medical records of 178 patients were analyzed. Most were male (53.7%), with an average age of 34.98 and a standard deviation of 18.2 years. POC was registered in 28 (15.7%) patients, with surgical site infection being the most common in 21 (39.62%) patients. Those over 65 years old (21.4% vs. 6.4%, p=0.013), patients with a history of hypertension (25% vs. 6.3%, p=0.002), hypoalbuminemia (100% vs. 43.8%, p=0.027), diagnosed with peritonitis due to hollow viscus perforation (21.4% vs. 6%, p=0.007), trauma (25% vs. 9.3%, p=0.018), and those with a midline incision (75% vs. 31.3%, p<0.001) had a higher frequency of POC. There was a mortality rate of 2.8% with no significant difference based on the development of POC. Conclusion POC represents a significant cause of morbidity and mortality in patients undergoing emergency surgeries. The studied sample showed a similar frequency of POC compared to previous reports but with lower mortality. Complications were associated with higher frequencies of hypertension, midline approach, hypoalbuminemia, and emergency surgery for peritonitis due to hollow viscus perforation and trauma.
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We hypothesized that fetal exposure to the oxidative stress induced by the combined challenge of preeclampsia (PE) and high altitude would induce a significant impairment in the development of pulmonary circulation. We conducted a prospective study in La Paz (Bolivia, mean altitude 3625 m) in which newborns from singleton pregnancies with and without PE were compared (PE group n = 69, control n = 70). We conducted an echocardiographic study in these infants at the median age of two days. The percentage of cesarean deliveries and small for gestational age (SGA) infants was significantly higher in the PE group. Heart rate, respiratory rate, and oxygen saturation did not vary significantly between groups. Estimated pulmonary arterial pressure and pulmonary vascular resistance were 30% higher in newborns exposed to PE and high altitude compared with those exposed only to high altitude. We also detected signs of right ventricular hypertrophy in infants subjected to both exposures. In conclusion, this study provides evidence that the combination of PE and pregnancy at high altitude induces subclinical alterations in the pulmonary circulation of the newborn. Follow-up of this cohort may provide us with valuable information on the potential increased susceptibility to developing pulmonary hypertension or other pulmonary and cardiovascular disorders.
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INTRODUCTION: Death following surgical procedures is a global health problem, accounting for 4.2 million deaths annually within the first 30 postoperative days. The fourth indicator of The Lancet Commission on Global Surgery is essential as it seeks to standardise postoperative mortality. Consequently, it helps identify the strengths and weaknesses of each country's healthcare system. Accurate information on this indicator is not available in Colombia, limiting the possibility of interventions applied to our population. We aim to describe the in-hospital perioperative mortality of the surgical procedures performed in Colombia. The data obtained will help formulate public policies, improving the quality of the surgical departments. METHODS AND ANALYSIS: An observational, analytical, multicentre prospective cohort study will be conducted throughout Colombia. Patients over 18 years of age who have undergone a surgical procedure, excluding radiological/endoscopic procedures, will be included. A sample size of 1353 patients has been projected to achieve significance in our primary objective; however, convenience sampling will be used, as we aim to include all possible patients. Data collection will be carried out prospectively for 1 week. Follow-up will continue until hospital discharge, death or a maximum of 30 inpatient days. The primary outcome is perioperative mortality. A descriptive analysis of the data will be performed, along with a case mix analysis of mortality by procedure-related, patient-related and hospital-related conditions ETHICS AND DISSEMINATION: The Fundación Cardioinfantil-Instituto de Cardiología Ethics Committee approved this study (No. 41-2021). The results are planned to be disseminated in three scenarios: the submission of an article for publication in a high-impact scientific journal and presentations at the Colombian Surgical Forum and the Congress of the American College of Surgeons. TRIAL REGISTRATION NUMBER: NCT05147623.
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Estudios Prospectivos , Humanos , Adolescente , Adulto , Colombia/epidemiología , Tamaño de la Muestra , Mortalidad Hospitalaria , Resultado del Tratamiento , Estudios Observacionales como Asunto , Estudios Multicéntricos como AsuntoRESUMEN
Resumen En la actualidad, el interés de los sistemas educativos se sitúa en la gestión del aprendizaje, basada en las plataformas virtuales, sobre todo, en cómo se propicia la construcción del conocimiento social desde el e-learning. El propósito del artículo fue aportar a este tema, al reflexionar acerca del comportamiento que tiene la utilización de e- learning en el proceso de enseñanza-aprendizaje de la cultura física, a partir de un estudio a los profesores de la carrera de Cultura Física, en universidades ecuatorianas. Se realizó una investigación cuantitativa, con el empleo de métodos y técnicas que permitieron recopilar información para el respectivo análisis, en la carrera de Cultura Física, en la Universidad de Guayaquil, explorando, mediante encuestas, a docentes y estudiantes, así como observaciones sistemáticas al proceso de enseñanza-aprendizaje en las plataforma e-learning y las experiencias didácticas que se utilizan en la carrera, lo cual ha podido dejar en evidencia aspectos inherentes a las posibilidades y limitaciones del e-learning en la enseñanza de la mencionada carrera, puesto que este ha tenido una amplia recepción en la educación universitaria ya que posibilita en los estudiantes, la apropiación de conocimientos, desarrollo de habilidades y actitudes que les permitirán desenvolverse en el contexto social.
Síntese Atualmente, o interesse dos sistemas educativos está na gestão da aprendizagem baseada em plataformas virtuais, sobretudo na forma como se promove a construção do conhecimento social a partir do e-learning. O objetivo deste artigo foi contribuir para este tema, refletindo sobre o comportamento do uso do e-learning no processo de ensino e aprendizagem da cultura física, com base em um estudo de professores de cultura física em universidades equatorianas. Foi realizada uma pesquisa quantitativa utilizando métodos e técnicas que permitiram a recolha de informação para a respectiva análise na carreira de Cultura Física na Universidade de Guayaquil, explorando através de um levantamento de professores e alunos, bem como observações sistemáticas do processo ensino-aprendizagem nas plataformas de e-learning e as experiências didáticas utilizadas na carreira, Isto tornou evidentes aspectos inerentes às possibilidades e limitações do e-learning no ensino da referida carreira, uma vez que o e-learning tem tido um amplo acolhimento no ensino universitário, uma vez que facilita nos estudantes a apropriação de conhecimentos, o desenvolvimento de competências e atitudes que lhes permitirão desenvolver-se no contexto social.
Abstract At present, the interest of educational systems is in the management of learning based on virtual platforms, especially in how the construction of social knowledge from e-learning is encouraged. The purpose of the article was to contribute to thistopic, by reflecting on the behavior of the use of e-learning in the teaching-learning process of physical culture, from a study of the professors of the Physical Culture career, in Ecuadorian universities. A quantitative investigation was carried out using methods and techniques that allowed to gather information for the respective analysis in the Physical Culture degree, at the University of Guayaquil, exploring through a survey of teachers and students, as well as systematic observations of the teaching-learning process in the e-learning platform and the didactic experiences that are used in the race, which has been able to leave in evidence aspects inherent to the possibilities and limitations of e-learning in the teaching of the mentioned race, since e-learning has had a wide reception in university education because it facilitates in students the appropriation of knowledge, development of skills and attitudes that will allow them to function in the social context.
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Rocio virus (ROCV) is a highly neuropathogenic mosquito-transmitted flavivirus responsible for an unprecedented outbreak of human encephalitis during 1975-1976 in Sao Paulo State, Brazil. Previous studies have shown an increased number of inflammatory macrophages in the central nervous system (CNS) of ROCV-infected mice, implying a role for macrophages in the pathogenesis of ROCV. Here, we show that ROCV infection results in increased expression of CCL2 in the blood and in infiltration of macrophages into the brain. Moreover, we show, using CCR2 knockout mice, that CCR2 expression is essential for macrophage infiltration in the brain during ROCV infection and that the lack of CCR2 results in increased disease severity and mortality. Thus, our findings show the protective role of CCR2-mediated infiltration of macrophages in the brain during ROCV infection.
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Encefalitis/metabolismo , Infecciones por Flavivirus/metabolismo , Flavivirus/patogenicidad , Macrófagos/metabolismo , Receptores CCR2/metabolismo , Animales , Encéfalo , Brasil , Encefalitis/virología , Femenino , Infecciones por Flavivirus/virología , Macrófagos/virología , Ratones , Ratones Endogámicos C57BL , Ratones NoqueadosRESUMEN
Acute myeloid leukemia (AML) is a clonal hematologic neoplasm characterized by heterogeneity of genetic abnormalities found at diagnosis. These abnormalities serve to classify patients by risk group into low, intermediate, and high risk. It also provides specific targets for the development of new combinational therapies. However, because of the heterogeneity of genetic abnormalities, targeted therapy is not always possible. Altered mitochondrial metabolism is a common feature in cancer cells, a phenomenon first described by Otto Warburg. In AML patients, the discovery of mutations in the isocitrate dehydrogenase gene provided for the first time a link between altered mitochondrial metabolism and AML. This raised the possibility of testing drugs known as mitocans for new combinational therapeutic approaches. Mitocans are a diverse group of anti-cancer compounds that target mitochondria. They disrupt energy production leading to enhanced generation of reactive oxygen species along with the activation of the intrinsic pathway of apoptosis. The present review discusses the different types of mitocans and their mechanism of action along with preclinical and clinical studies in AML (AU)
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Humanos , Masculino , Femenino , Adulto , Persona de Mediana Edad , Anciano , Leucemia Mieloide Aguda/genética , Heterogeneidad Genética , Neoplasias Hematológicas , MitocondriasRESUMEN
PURPOSE: EGFR is a well-validated target for patients with non-small cell lung cancer (NSCLC). CIMAvax-EGF is a therapeutic cancer vaccine composed of human recombinant EGF conjugated to a carrier protein and Montanide ISA51 as adjuvant. The vaccine is intended to induce antibodies against self EGFs that block EGF-EGFR interaction. EXPERIMENTAL DESIGN: To evaluate overall survival, safety, immunogenicity, and EGF concentration in serum after CIMAvax-EGF, a randomized phase III trial was done in patients with advanced NSCLC. Four to 6 weeks after first-line chemotherapy, 405 patients with stage IIIB/IV NSCLC were randomly assigned to a vaccine group, which received CIMAvax-EGF or a control group, treated with best supportive care. RESULTS: Long-term vaccination was very safe. Most frequent adverse reactions were grade 1 or 2 injection-site pain, fever, vomiting, and headache. Vaccination induced anti-EGF antibodies and decreased serum EGF concentration. In the safety population, median survival time (MST) was 10.83 months in the vaccine arm versus 8.86 months in the control arm. These differences were not significant according the standard log rank (HR, 0.82; P = 0.100), but according a weighted log rank (P = 0.04) that was applied once the nonproportionality of the HR was verified. Survival benefit was significant (HR, 0.77; P = 0.036) in the per-protocol setting (patients receiving at least four vaccine doses): MST was 12.43 months for the vaccine arm versus 9.43 months for the control arm. MST was higher (14.66 months) for vaccinated patients with high EGF concentration at baseline. CONCLUSIONS: Switch maintenance with CIMAvax-EGF was well tolerated and significantly increased MST of patients that completed induction vaccination. Baseline EGF concentration predicted survival benefit. Clin Cancer Res; 22(15); 3782-90. ©2016 AACR.
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Vacunas contra el Cáncer/administración & dosificación , Carcinoma de Pulmón de Células no Pequeñas/tratamiento farmacológico , Carcinoma de Pulmón de Células no Pequeñas/patología , Factor de Crecimiento Epidérmico/administración & dosificación , Neoplasias Pulmonares/tratamiento farmacológico , Neoplasias Pulmonares/patología , Adyuvantes Inmunológicos , Vacunas contra el Cáncer/efectos adversos , Carcinoma de Pulmón de Células no Pequeñas/mortalidad , Factor de Crecimiento Epidérmico/sangre , Femenino , Humanos , Inmunoterapia Activa , Estimación de Kaplan-Meier , Neoplasias Pulmonares/mortalidad , Masculino , Estadificación de Neoplasias , Pronóstico , Retratamiento , Resultado del TratamientoRESUMEN
La leucemia mieloide crónica (LMC) es una neoplasia mieloproliferativa asociada a la presencia del gen de fusión BCR-ABL1 en la célula madre hematopoyética producto de la translocación t(9;22) 8q34;q11.2). Este nuevo gen codifica para una proteína tirosin quinasa con actividad oncogénica. Este estudio descriptivo de corte transverso tuvo como objetivo identificar y cuantificar los transcriptos BCR-ABL1 mediante técnicas de biología molecular en pacientes con sospecha clínica y en tratamiento de LMC, que concurrieron al laboratorio de Genética Molecular del Instituto de Investigaciones en Ciencias de la Salud desde tres hospitales públicos de referencia. Se estudiaron un total de 69 pacientes a partir de los cuales se obtuvieron 19 muestras antes del inicio del tratamiento y 57 a distintos tiempo durante el tratamiento con inhibidor de tirosin quinasa. Se analizó el tipo de transcripto en 42 muestras hallándose la isoforma b3a2 en el 64%, la b2a2 en el 31% y ambas en el 5%. A partir de las cuantificaciones realizadas en 57 muestras en tratamiento se determinó la respuesta molecular a los inhibidores de la tirosina quinsa. El 61% no alcanzó la RM Mayor y el 30% obtuvo una RM Mayor o Completa. Este estudio logró implementar por primera vez a nivel nacional la detección y cuantificación del transcripto BCR-ABL1 en pacientes con LMC, introduciéndose una herramientanecesaria para el diagnóstico y seguimiento de la respuesta al tratamiento.
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Fusión Génica/genética , Reacción en Cadena de la Polimerasa , Transcripción Reversa , Tesis Académicas como AsuntoRESUMEN
Eosinophilic pustular folliculitis, which was first described by Ofuji, is a type of dermatosis characterized by pruritic, follicular, papules and pustules that gradually extend peripherally and have central tendency. Ofuji's disease has been rarely reported, and has not been reported in pregnancy. It's possible that hypersensitivity reaction plays an important role. There is no consensus on treatment approaches. We present the case of a 27 year-old woman during the 12.5 weeks of her first pregnancy; she had developed Ofuji's disease for 17 years. Previously, she had been treated with corticosteroid and azatioprine for 15 years, which were suspended by the time she was diagnosed with pregnancy. Then, she was referred to our maternal fetal medicine department, and was treated with prednisone 25 mg a day. The patient had urinary infection and vulvovaginitis at the week 14.2, with peripheral blood eosinophilia. She had exacerbations at the weeks 35.2 and 38.1, which were treated only with prednisone and topical management; furthermore she had a total of 4 kg of weight gain during the whole pregnancy. Cesarean delivery was performed for nonreassuring fetal heart rate. Perinatal results were: woman with lower birth weight: 2,450 g, Apgar 5.8, placenta with calcifications on 60% of it and single nuchal cord. She had exacerbations in late puerperium. A healthy newborn was obtained and no clinical findings of dermatoses were found. Maternal autoimmune diseases may induce remission or exacerbation during pregnancy. Nevertheless, in this case the induced exacerbations during puerperium and the fact that a low birth weight was obtained are problems commonly associated with the prolonged use of corticosteroids during pregnancy.
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Eosinofilia , Foliculitis , Complicaciones del Embarazo , Enfermedades Cutáneas Vesiculoampollosas , Adulto , Eosinofilia/tratamiento farmacológico , Femenino , Foliculitis/tratamiento farmacológico , Humanos , Embarazo , Complicaciones del Embarazo/tratamiento farmacológico , Enfermedades Cutáneas Vesiculoampollosas/tratamiento farmacológicoRESUMEN
BACKGROUND: Diabetes mellitus complicates 3-5% of all pregnancies and is a major cause of perinatal morbidity and mortality. The diet and insulin have revolutionized the care related with pregnancy complicated by diabetes mellitus. OBJECTIVE: To report the management experience in patients with diabetes and pregnancy at the Instituto Materno Infantil, Estado de Mexico. PATIENTS AND METHOD: A descriptive, retrospective, observational and cross-sectional study of pregnant women with diabetes and pregnancy was conducted from 2003 to 2004. RESULTS: We included 55 pregnant women who had: gestational diabetes 30 (54.4%), pregestational diabetes 24 (43.6%), and carbohydrate intolerance 1 (1.8%); every one of them were controlled either with diet, insulin or both. The mean age was 30.6, 80% with family history of type 2 diabetes mellitus, 9% gestational diabetes. Gestational diabetes was diagnosed in 33.3% by abnormal 50 g glucose screening and 46.6% with oral glucose tolerance test (OGTT). The main complications among the patients were urinary disease (61.3%) and the major fetal malformation were those related with cardiovascular disease (9.09%). The most frequent mode of delivery was cesarean section (58%) and birth weight was of 3,146 g. CONCLUSIONS: The main risk factors identified among women in the study group were as follow: More than 25 years of age and family history of diabetes mellitus. We observed a progressive increase in the insulin dosage. The most consistent complications among the patients were urinary infection and the major fetal malformation was cardiovascular disease.
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Diabetes Gestacional , Embarazo en Diabéticas , Adulto , Estudios Transversales , Diabetes Gestacional/diagnóstico , Femenino , Humanos , Recién Nacido , Embarazo , Resultado del Embarazo , Embarazo en Diabéticas/diagnóstico , Estudios RetrospectivosRESUMEN
El glaucoma constituye un problema de salud pública muy importante, ya que es la segunda causa de ceguera en el mundo después de la catarata. El presente estudio tiene como objetivo determinar las características clinico-epidemiológicas de glaucoma en mayores de 40 años de la ciudad del Cusco. La muestra estuvo constituida por 450 personas de ambos sexos mayores de 40 años de edad seleccionados al azar. El promedio de edad fue 55.68(DE igual 11.94). El promedio de presión intraocular (PIO) de toda la población estudiada fue 16.22 mmHg(DE igual 3.07), con un rango de 10-41 mmHg y una moda de 17mmHg. No hallamos diferencia estadística significativa (p mayor 0.05) entre los promedios de ambos ojos ni con respecto al sexo en la población total. El promedio de PIO incrementa con la edad para ambos sexos y lado de ojo. No encontramos diferencia estadística entre los promedios de PIO respecto al sexo y lado de ojo en las personas normales. La PIO promedio en los hipertensos oculares fue 22.75 (DE igual 2.33), no hubo diferencia estadística significativa entre los promedios de ambos ojos. La PIO promedio en glaucomatosos fue 25.97 (DE igual 8.26) y un 25 por ciento presentaba PIO en valores normales, con una diferencia significativa mayor para el ojo derecho. La relación copa/disco promedio del total fue 0.28 (DE igual 0.1), no hubo diferencia entre los promedios para ambos ojos, pero sí entre los grupos de normales, hipertensos oculares y glaucomatosos. La prevalencia de glaucoma crónico simple fue 1.78 por ciento y para hipertensión ocular 2.22 por ciento. Hallamos una asociación del glaucoma con PIO elevada, edad avanzada, nivel socioeconómico bajo y antecedente familiar de glaucoma en primer grado (p menor 0.05), pero no con el tabaquismo, sexo, antecedentes de hipertensión ocular, diabetes y miopía.
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Glaucoma de Ángulo Abierto , Hipertensión OcularRESUMEN
Se realizó un estudio epidemiológico en el Distrito Sanitario Juan Griego a fin de caracterizar las ETA. Este estudio arrojó que el mayor número de casos de intoxicación por alimentos provenían del Barrio "Tari-Tari" y especialmente los menores de 5 años (57%) eran quienes se enfermaban y de ellos el 40% eran menores de un (1) año. Las condiciones higiénico-sanitarias del Distrito no son las más adecuadas ya que presentan graves fallas en los servicios básicos (agua, basura, eliminación de excretas. etc.); además, en los últimos años han venido creciendo barrios marginales que agravan la situación del Distrito, tal es el caso del Barrio "Francisco Adrián", ubicado cerca de uno de los basureros. Esto motivó la aplicación de la metodología de Análisis de Riesgos y Puntos Críticos de Control en los barrios mencionados. El trabajo fue dirigido a la aplicación del RPCC en la preparación de fórmulas lácteas para los menores de un (1) año. Se estudiaron 18 familias (9 en cada barrio) en las cuales había 20 niños menores de un (1) año. En muestreo se llevó acabo durante 7 semanas. Se realizaron análisis de Laboratorio para la determinación de salmollas, Staphylococcus aureus, coliformes totales y fecales en materia prima, alimentos y equipos usados durante la preparación de los teteros; así como también medición de la temperatura ambiente, de neveras y de la mezcla de harina para la preparación de teteros. Los resultados indicaron que en las materias primas empleadas (leche, harina, cereal) no se detectó salmonella; en las muestras de teteros hervidos, ,manos, pezones, agua, se identificaron Staphylococcus aureus y cifras elevadas de NMP Coliformes totales y fecales. Estos resultados microbiológicos en general indican deficiente higiene sanitaria de los habitantes fallas en la manipulación y conservación de los teteros, situación favorecida por la presencia de altas temperaturas ambientales y deficiente refrigeración que permite el crecimiento de los microorganismos
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Lactante , Humanos , Masculino , Femenino , Sustitutos de la Leche Humana , Riesgo , Intoxicación Alimentaria por SalmonellaRESUMEN
Forty-five samples of raw chicken carcasses obtained from three poultry processing plants were examined for presence of Salmonella by the whole carcass rinse and skin maceration methods. Sensitivity of the selenite cystine (SC), tetrathionate brilliant green (TBG) and Rappaport (RAP) enrichment broths at 37°C and 43°C was compared following preenrichment in nutrient broth incubated at 37°C for 24 h. The rinse method and skin maceration resulted in isolation of Salmonella from 41 and 22 of the 45 samples, respectively. RAP incubated at 43 °C resulted in higher rates of isolation of Salmonella than TBG and SC incubated at the same temperature. Incubation at 37°C was less productive. The sensitivity and selectivity of bismuth sulfite agar (BSA) exceeded that obtained with desoxycholate citrate agar (DCA) and brilliant green agar (BGA). With the methods and media we compared, sampling by the whole carcass rinse method and enrichment in RAP (43°C) and plating on BSA provide optimal conditions for detection of Salmonella in raw chicken. Eleven serotypes were identified with Salmonella anatum showing the highest frequency of isolation.