Obstrucción intestinal secundaria a diverticulitis de Meckel por enterolito: descripción de un caso

El divertículo de Meckel es la anomalía congénita más frecuente del tracto gastrointestinal, es un divertículo verdadero, ya que contiene todas las capas de la pared intestinal. Suele ser asintomático o se detecta de manera incidental en las pruebas de imágenes diagnósticas. Tiene un riesgo de complicación del 2-40%, siendo la más frecuentes la hemorragia, la obstrucción intestinal y la diverticulitis.Se describe el caso de un paciente masculino de 52 años de edad, que consultó al servicio de urgencias del Hospital Universitario de Salamanca (España) por un cuadro de dolor abdominal, clínica infecciosa y  de obstrucción intestinal.Mediante pruebas de imagen se diagnosticó una obstrucción intestinal secundaria a diverticulitis de Meckel por un enterolito, se realizó intervención quirúrgica y se confirmaron los hallazgos radiológicos descritos

Obstrucción intestinal secundaria a diverticulitis de Meckel por enterolito: descripción de un caso

El divertículo de Meckel es la anomalía congénita más frecuente del tracto gastrointestinal, es un divertículo verdadero, ya que contiene todas las capas de la pared intestinal. Suele ser asintomático o se detecta de manera incidental en las pruebas de imágenes diagnósticas. Tiene un riesgo de complicación del 2-40%, siendo la más frecuentes la hemorragia, la obstrucción intestinal y la diverticulitis.Se describe el caso de un paciente masculino de 52 años de edad, que consultó al servicio de urgencias del Hospital Universitario de Salamanca (España) por un cuadro de dolor abdominal, clínica infecciosa y  de obstrucción intestinal.Mediante pruebas de imagen se diagnosticó una obstrucción intestinal secundaria a diverticulitis de Meckel por un enterolito, se realizó intervención quirúrgica y se confirmaron los hallazgos radiológicos descritos

Voltammetric Determination of the Herbicide Linuron Using a Tricresyl Phosphate-Based Carbon Paste Electrode

This paper summarises the results of voltammetric studies on the herbicide 3-(3,4-dichlorophenyl)-1-methoxy-1-methylurea (Linuron), using a carbon paste electrode containing tricresyl phosphate (TCP-CPE) as liquid binder. The principal experimental conditions, such as the pH effect, investigated in Britton-Robinson buffer solutions (pH 2.0–7.0), the peak characteristics for the analyte of interest, or instrumental parameters for the differential pulse voltammetric mode were optimized for the method. As found out, the best electroanalytical performance of the TCP-CPE was achieved at pH 2.0, whereby the oxidation peak of Linuron appeared at ca. +1.3 V vs. SCE. The analytical procedure developed offers good linearity in the concentration range of 1.25–44.20 μg mL−1 (1.77 × 10−4–5.05 × 10−6 mol L−1), showing—for the first time—the applicability of the TCP-CPE for anodic oxidations in direct voltammetry (without accumulation). The method was then verified by determining Linuron in a spiked river water sample and a commercial formulation and the results obtained agreed well with those obtained by the reference HPLC/UV determination

Quantification of three macrolide antibiotics in pharmaceutical lots by HPLC: Development, validation and application to a simultaneous separation

A new validated high performance liquid chromatographic (HPLC) method with rapid analysis time and high efficiency, for the analysis of erythromycin, azithromycin and spiramycin, under isocratic conditions with ODB RP18 as a stationary phase is described. Using an eluent composed of acetonitrile –2-methyl-2-propanol –hydrogenphosphate buffer, pH 6.5, with 1.5% triethylamine (33:7: up to 100, v/v/v), delivered at a flow-rate of 1.0 mL min-1. Ultra Violet (UV) detection is performed at 210 nm. The selectivity is satisfactory enough and no problematic interfering peaks are observed. The procedure is quantitatively characterized and repeatability, linearity, detection and quantification limits are very satisfactory. The method is applied successfully for the assay of the studied drugs in pharmaceutical dosage forms as tablets and powder for oral suspension. Recovery experiments revealed recovery of 97.13–100.28%

Determinación de plaguicidas agrícolas mediante redisolución anódica por voltamperometría cíclica con ultramicroelectrodos de fibra de carbono

Tesis Doctoral inédita leída en la Universidad Autónoma de Madrid, Facultad de Ciencias, Departamento de Química Analítica. Fecha de lectura: 30-10-199

Analysis of Macrolide Antiobiotics by Liquid Chromatography

A compilation of the most representative single and multianalyte HPLC methods for the analysis of macrolide antibiotics published during the two last decades is presented in this paper. Its scope is the coverage of two main areas which require the determination of macrolide antibiotics at a low concentration level i.e. pharmacokinetic studies and residue analysis. Both of these areas involve the treatment of biological and foodstuff matrices respectively. A detailed explanation of the different sample preparation procedures as well as the experimental conditions and the main analytical features are provided for each referred method in order to allow the reader to select the most suitable conditions for their particular purpose.JRC.D.8-Food safety and qualit

Development of a Multiresidue Liquid Chromatography Method with Electrochemical Detection (HPLC-ECD) for the Determination of Macrolide Antibiotics.

Abstract not availableJRC.D-Institute for Reference Materials and Measurements (Geel