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1.
An. acad. bras. ciênc ; 89(1,supl): 445-456, May. 2017. tab, graf
Article in English | LILACS | ID: biblio-886648

ABSTRACT

ABSTRACT This study investigated the anesthetic potential of the essential oil (EO) of Aloysia polystachya in juveniles of dusky grouper (Epinephelus marginatus). Fish were exposed to different concentrations of EO of A. polystachya to evaluate time of induction and recovery from anesthesia. In the second experiment, fish were divided into four groups: control, ethanol and 50 or 300 µL L−1 EO of A. polystachya, and each group was submitted to induction for 3.5 min and recovery for 5 or 10 min. The blood gases and glucose levels showed alterations as a function of the recovery times, but Na+ and K+ levels did not show any alteration. In conclusion, the EO from leaves of A. polystachya is an effective anesthetic for dusky grouper, because anesthesia was reached within the recommended time at EO concentrations of 300 and 400 µL L−1. However, most evaluated blood parameters showed compensatory responses due to EO exposure.


Subject(s)
Animals , Catfishes/blood , Plant Oils/pharmacology , Oils, Volatile/pharmacology , Biomarkers/blood , Verbenaceae/chemistry , Anesthetics/pharmacology , Bicarbonates/blood , Hemoglobins/analysis , Plant Leaves/chemistry , Gases/blood , Glucose/analysis , Hematocrit , Hydrogen-Ion Concentration , Metals, Alkali/blood
2.
Acta bioquím. clín. latinoam ; Acta bioquím. clín. latinoam;45(3): 447-454, jul.-set. 2011. graf, tab
Article in Spanish | LILACS | ID: lil-633163

ABSTRACT

El procesamiento de una muestra en el laboratorio implica su paso a través de tres etapas: la preanalítica, la analítica y la postanalítica. En el presente trabajo se propuso analizar la etapa preanalítica para la determinación del estado ácido-base (EAB) a través de la comparación de muestras extraídas en diferentes tipos de jeringas y del efecto del tiempo de almacenamiento, estudiar el desempeño analítico y la concordancia entre dos analizadores gemelos y evaluar si los resultados permiten trabajar bajo las especificaciones de calidad requeridas. Para ello se utilizaron 2 microprocesadores automáticos de gases en sangre en los cuales se midieron pH, pCO2 y pO2, y se fijaron las especificaciones de calidad derivadas de CLIA (Clinical Laboratory Improvement Amendments) como requerimento a cumplir. La imprecisión intraensayo (CVi) y entreensayos (CVe) fue determinada con material de control comercial. Sobre un total de 239 muestras de pacientes, 20 se utilizaron para realizar la comparación entre muestras extraídas en jeringas con heparina sódica en solución y con heparina de litio liofilizada; 110 muestras se procesaron para evaluar el efecto del tiempo de almacenamiento y 109 para la comparación entre ambos instrumentos. Los CVi y CVe fueron aceptables para los 3 parámetros. Las diferencias halladas entre las muestras obtenidas con las diferentes jeringas no superaron los límites permitidos. No se observaron diferencias significativas en los resultados hasta los 120 minutos de procesamiento. Los coeficientes de correlación de las muestras procesadas en ambos instrumentos fueron 0,931 para pH, 0,985 para pCO2 y 0,950 para pO2. El sesgo fue aceptable así como también el porcentaje de equivalencia clínica para los tres parámetros. Se concluye que la evaluación de los resultados de instrumentos gemelos y la implementación de programas sistemáticos de conmutabilidad son fundamentales para conseguir la disminución progresiva del error y para poder utilizarlos indistintamente.


Measurement of blood gas, as another sample, involves three phases: preanalytical, analytical and postanalytical. The aim of this study is to evaluate the preanalytical phase comparing samples obtained from different syringes and the effect of storage time; to study the analytical performance; to compare the agreement between two instruments, and to analyse if the results were satisfactory taking into account CLIA specifications. Two microanalyzers were used, in which pH, pCO2 and pO2 were tested. Within-day imprecisions (CVi) and between-day imprecisions (CVe) were obtained with control materials. Two hundred and thirty-nine patient-samples were used; 20 were used for the comparison between samples obtained with heparinized syringes (sodium liquid heparin) and dry lithium heparin); 110 were processed to evaluate the effect of storage time, and 109 for the comparison between the analyzers. CVi and CVe were acceptable for the three parameters. The difference between the different syringes did not exceed the acceptable limits. No significant difference was noticed until 120 min of storage. The correlation coefficients for processed samples in both instruments were 0.931 for pH, 0.985 for PCO2 and 0.950 for PO2. The bias was acceptable as the clinical equivalence for the three parameters. Evaluating the results between identical instruments and introducing a systematic quality program has an important role in obtaining a progressive decrease of the total error between them, and using one or the other without distinction.


O processamento de uma amostra no laboratório envolve sua passagem através de três etapas: a pré-analítica, a analítica e a pós-analitica. No presente trabalho o objetivo foi analisar a etapa pré-analítica para a determinalo do estado ácido base (EAB) através da comparaçâo de amostras extraídas em diferentes tipos de seringas e do efeito do tempo de armazenamento, estudar o desempenho analítico e a concordancia entre dois analisadores idénticos e avaliar se os resultados permitem trabalhar sob as especificações de qualidade requeridas. Para isso foram utilizados 2 microprocessadores automáticos de gases em sangue nos quais se mediram pH, pCO2 e pO2, e se estabeleceram as especificagóes de qualidade decorrentes de CLIA (Clinical Laboratory Improvement Amendments) como requerimento a cumprir. A imprecisâo intraensaio (CVi) e entre ensaios (CVe) foi determinada com material de controle comercial. De um total de 239 amostras de pacientes, 20 foram utilizadas para realizar a comparaçâo entre amostras extraídas em seringas com heparina sódica em soluçâo e com heparina de litio liofilizada; 110 amostras foram processadas para avaliar o efeito do tempo de armazenamento e 109 para a comparaçâo entre ambos os instrumentos. Os CVi e CVe foram aceitáveis para os 3 parámetros. As diferengas encontradas entre as amostras obtidas com as diferentes seringas não superaram os limites permitidos. Nâo foram observadas diferengas significativas nos resultados atéos 120 minutos de processamento. Os coeficientes de correlaçâo das amostras processadas em ambos os instrumentos foram 0,931 para pH, 0,985 para pCO2 e 0,950 para pO2. O viés foi aceitável bem como também o percentual de equivaléncia clínica para os trés parámetros. A conclusâo é que a avaliaçâo dos resultados de instrumentos idénticos e a implementaçâo de programas sistemáticos de comutabilidade sâo fundamentais para conseguir a diminuiçâo progressiva do erro e para poder utilizálos indistintamente.


Subject(s)
Laboratory and Fieldwork Analytical Methods , Gases/blood , Pre-Analytical Phase , Quality Control , Quality Indicators, Health Care , Clinical Laboratory Services , Laboratories/statistics & numerical data , Pre-Analytical Phase/statistics & numerical data
3.
Rev. chil. pediatr ; 81(5): 445-455, oct. 2010. ilus, graf, tab
Article in Spanish | LILACS | ID: lil-577530

ABSTRACT

Sleep Disorders can generate significant impact in the health of children and adolescents at a highly vulnerable period for neurodevelopment. A proper history and physical exam can lead the diagnosis, however there are significant limitations especially in the early phases of illness. Children with specific risks require a high level of suspicion, and early diagnostic studies. This review describes various diagnostic alternatives, feasible in different clinical situations, during sleep or wakefulness. These diagnostic studies may be useful in detection and early treatment of Sleep Disorders.


Los Trastornos Respiratorios del Sueño (TRS) pueden generar un impacto en la salud de niños y adolescentes, en un periodo altamente vulnerable para el neurodesarrollo. La anamnesis y examen fisco pueden orientar a su diagnóstico, sin embargo, poseen limitaciones importantes, especialmente en etapas precoces de la enfermedad. En niños con factores de riesgo específicos es necesario tener un alto nivel de sospecha y realizar estudios diagnósticos. Este artículo de revisión tiene como objetivo describir las distintas alternativas diagnósticas, practicables en distintos escenarios clínicos y realizadas durante el sueño o vigilia. Estos métodos diagnósticos pueden ser de utilidad en el reconocimiento y tratamiento precoz de los TRS.


Subject(s)
Humans , Child , Polysomnography/methods , Sleep Apnea Syndromes/diagnosis , Sleep Apnea Syndromes/physiopathology , Circadian Rhythm , Gases/blood , Monitoring, Physiologic , Oximetry , Respiratory Physiological Phenomena , Respiration, Artificial/methods , Signs and Symptoms , Spirometry , Sleep Apnea Syndromes/etiology
5.
Article in English | WPRIM | ID: wpr-30951

ABSTRACT

We present a case of portal and superior mesenteric venous gas in a 31-year-old diabetic woman with a left-sided retroperitoneal abscess. Five years prior to admission, patient was diagnosed with diabetes mellitus and developed emphysematous pyelonephritis, requiring nephrectomy on the left side. A CT examination showed air distributed throughout the portal venous system and superior mesenteric vein.


Subject(s)
Adult , Female , Humans , Abscess/blood , Gases/blood , Mesenteric Veins/metabolism , Portal Vein/metabolism , Retroperitoneal Space , Tomography, X-Ray Computed
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