Correlación de la velocidad media de la arteria uterina con la edad gestacional como indicador de perfusión vascular uterina

Objetivo: Determinar la correlación de la velocidad media de la arteria uterina con la edad gestacional como indicador de perfusión vascular uterina. Diseño: Estudio transversal, analítico. Institución: Hospital III Honorio Delgado de Arequipa, Perú. Participantes: Gestantes entre 14 a 41 semanas de gestación, que acudieron al hospital para evaluación ecográfica de rutina sin evidencia de patología. Métodos: A gestantes entre 14 a 41 semanas de gestación que acudieron al hospital para evaluación ecográfica de rutina sin evidencia de patología, entre Julio 2013 y abril 2014, se realizó ecografía Doppler de las arterias uterinas y se correlacionó la velocidad media (MnV) promedio de ambas arterias con la edad gestacional determinada por ecografía del primer trimestre. Se buscó la correlación de la MnV promedio en el segundo (14 a 28 semanas) y tercer (29 a 41 semanas) trimestres de gestación y se determinó el percentil S para dicha velocidad. Principales medidas de resultados: Cálculo de la MnV promedio de ambas arterias uterinas y correlación con la edad gestacional. Resultados: Se evaluó 138 gestantes con una edad materna promedio de 26,4 años y se encontró un coeficiente de correlación de la MnV promedio con la edad gestacional de r = 0,SS6 (r2 = 0,31). En el segundo y tercer trimestre de gestación el coeficiente de correlación fue r = 0,634 (r2 = 0,40) y r = 0,32 (r2 = 0,001), respectivamente. El percentil S de la MnV promedio en el tercer trimestre fue 67,SO cm/s. Conclusiones: Existió correlación de la MnV con la edad gestacional, cuyos valores menores al percentil S según la edad gestacional podrían ser utilizados como indicadores de hipoperfusión vascular uterina en gestantes del segundo y tercer trimestre.

Objectives: To determine correlation ofthe uterine artery mean velocity with gestational age as indicator of uterine vascular perfusion. Design: Cross-sectional study. Setting: Hospital III Honorio Delgado, Arequipa, Peru. Participants: Pregnant women. Interventions: To pregnant women between 14-41 weeks of gestation admitted to the hospital for routine ultra­ sound evaluation without evidence of pathology both uterine arteries average mean velocity (MnV) was calculated and correlated with gestational age. Correlation of average MnV in the second (14-28 weeks) and third (29-41 weeks) trimesters and MnV Sth percentile were determined. Main outcome measures: 80th uterine arteries mean velocity (MnV) and correlation with gestational age. Results: Average age of the 138 pregnant women was 26.4 years and MnV correlation coefficientto gestational age was r = 0.SS6 (r2 = 0.31). Correlation coefficients were r = 0.634 (r2 = 0.40) and r = 0.32 (r2 = 0.001) respectively in the second and third trimes­ terso MnV Sth percentile average in the third trimester (29-41 weeks) was 67.S0 cm/s. Conclusions: There was MnV correlation with gestational age. Values below the Sth percentile for gestational age could be used as indicators of uterine vascular hypoperfusion in pregnant women in the second and third trimesters.

Relationship between velocity of middle cerebral artery,severity of disease and watershed infarction in patients with extracranial internal carotid artery stenosis or occlusion / 临床神经病学杂志

Objective To study the relationship between velocity of middle cerebral artery(MCA),severity of disease and watershed infarction(WSI) in patients with extracranial internal carotid artery(EICA) stenosis or occlusion.Methods Transcranial Doppler(TCD) was used to detect the mean velocity(MV) of MCA in 120 patients with EICA stenosis or occlusion.The National Institutes of Health Stroke Scale(NIHSS) was used to evaluated the patients′ condition.And CT or MRI was used to diagnosised the WSI.Results MV of MCA was severe reduced in 10 cases,middle reduced in 38 cases,and mild reduced in 42 cases,while there were 30 cases with normal MV.The scores of NIHSS in the four groups(12.5?4.7,3.9?4.8,3.2?4.7,2.4?4.9 respectively) had significant different(P

Stability and Expiration Date Prediction of Betamethasone Cream / 中国药房

OBJECTIVE:To study the stability and to predicate the expiration date of betamethasone cream.METHODS:The HPLC method was used to determination the content of betamethasone,the stability test of cream was done by initial mean velocity method and strong light exposure experiment,respectively.RESULTS:The linear concentration range for betametha?sone cream was0.25～8?g/ml(r=0.9991),the average recovery rate was98.56%,RSD=0.78%;The content was highly correlated to temperature,whereas on which the light exposure did little effect.CONCLUSIONS:Betamethasone cream should be stored under room temperature and in a cool place,it is predicted that the expiration date of betamethasone cream is1year.