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Volumen 7

Monday, 30 April 2018

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Written by Editores de la revista, Posted in Volumen 7

Evolución

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La evolución biológica es el conjunto de cambios en caracteres fenotípicos y genéticos de poblaciones biológicas a través de generaciones. Charles Robert Darwin fue un naturalista inglés, reconocido por ser el científico más influyente de los que plantearon la idea de la evolución biológica a través de la selección natural, justificándola en su obra de 1859 "El origen de las especies", con numerosos ejemplos extraídos de la observación de la naturaleza.

Si dejamos huérfana a la palabra evolución, su definición atendería al cambio o transformación gradual de algo, como un estado, una circunstancia, una situación o unas ideas. Dentro de este contexto evolutivo gradual se encuentra "Laboratory Medicine at a glance", una revista como sabéis, fundamentada en imágenes relacionadas con la Medicina de Laboratorio y que volumen tras volumen evoluciona.

Monday, 30 April 2018

CRYSTALS OF AMMONIUM URATE IN A URINE IN THE EMERGENCY DEPARTMENT

Written by Paula Anahuí de la Torre García | Victoria Villalta Robles | Álvaro Sánchez Sánchez, Posted in Volumen 7

CRISTALES DE URATO AMÓNICO EN UNA ORINA DEL SERVICIO DE URGENCIAS
Figure 1. Crystals of ammonium urate in spontaneous urine at 400 increases. White light microscopy and polarized light filter.

We present a clinical case of a four-year-old girl who came to the Emergency Department for vomiting of four days of evolution associated with diarrhea in the last two days. He currently has two brothers who present with acute gastroenteritis.

In the physical examination it is objectified: affectation of the general state, soft abdomen, not painful on palpation; normal cardiopulmonary auscultation.

Monday, 30 April 2018

PREANALYTICS, INTERFERENCES AND BIOLOGICAL FLUIDS

Written by María Jesús Andrés Otero | Mercedes Gálvez Castrillo | Dolores Hernandez Villén, Posted in Volumen 7

PREANALÍTICA, INTERFERENCIAS Y LÍQUIDOS BIOLÓGICOS
Figure 1. A) and B) Cerebrospinal fluid (CSF): red blood cells, leukocytes and artefacts (40x).

Performing the cytological analysis of cerebrospinal fluid (CFS). Microscopic vision with a 40x objective reveals a double layer of circular structures ofsimilar size to red blood cells or larger (≈ 10 - 18 microns), and also loose or grouped rectangular structures (≈ 10 - 20 microns) (figure 1A and 1B). The alarm of the alarm of the cytometer was not triggered.


Monday, 30 April 2018

BACTERAEMIA IN A PERIPHERIAL BLOOD SMEAR. SYSTEMIC INFECTION OR IN VITRO CONTAMINATION?

Written by Romina García Sardina | Clara Esparza del Valle | Ruth González Sánchez, Posted in Volumen 7

PRESENCIA DE BACILOS EN SANGRE PERIFÉRICA ¿CONTAMINACIÓN O INFECCIÓN?
Figure 1. Intracellular bacilli and cytoplasmatic vacuoles in a peripheral blood smear ×1000.

Serratia belongs to the Enterobacteriaceae family. The Enterobacteriaceae species is Gram negative bacteria, of whom many varieties are a normal part of the gut flora found in the intestines. S. marcescens is normally the only pathogen in the Serratia genus, and it usually causes nosocomial infections1. S. marcescens is thought to be transmitted through hand transmission by hospital personnel. The Serratia spp infection is responsible for about 2% of the nosocomial infections in the bloodstream, lower respiratory tract, urinary tract, surgical wounds and skin and soft tissues. It can also lead to a life-threatening bacteraemia. Its overall mortality rate is high, ranging from 25-85%2. Outbreaks of the S. marcescens in pediatric patients involve mainly critically ill children hospitalized in neonatal or pediatric intensive care units3. Treatment of Serratia spp infections is sometimes difficult due to the increase in the rate of antimicrobial resistance among S. marcescens’ isolates.