Rango de acción del colocador como indicador de rendimiento en voleibol masculino / Setter’s Action Range as A Performance Indicator in Male Volleyball

Este estudio buscó comprobar si la zona ideal de colocación es la más usada, comparar dicha zona con la Posición Media (AP) del colocador con disponibilidad de primer tiempo y verificar si la distancia entre ambas puede considerarse un indicador de rendimiento. Analizamos 2291 acciones de los 12 mejores equipos del mundial masculino de voleibol (2010). Registramos la posición (latitud y profundidad) del colocador. Calculamos su AP y la distancia a la zona ideal. Recogimos la eficacia de recepción desde las estadísticas de la FIVB. Una correlación aportó la Rho de Spearman. Los resultados confirman el área de latitud 6 y profundidad 1 como la más exitosa, pero los equipos pueden contar con primer tiempo cuando el colocador sale de ella. La distancia entre la AP con disponibilidad de primer tiempo y la zona ideal de colocación correlaciona con la clasificación final más que la eficacia de recepción (AU)

This study aimed to check if the ideal setting zone is the most frequently used, to compare this zone with the Average Position of the setter with middle blocker availability (AP) and to verify if the distance between both can be considered a performance indicator. 2291 actions of the top-12 teams in the 2010 Men’s Volleyball World Championship were analysed. The position (latitude and depth) of the setter was registered. The AP and the distance with the ideal setting zone were calculated. The reception efficacy was retrieved from the FIVB. Spearman’s Rho was obtained through a correlation. Results confirm the area of latitude 6 and depth 1 as the most successful. Nevertheless, teams are able to maintain first tempo availability despite moving the setter out of it. The distance between the AP and the ideal setting zone correlates to the final ranking more than the reception efficacy. (AU)

Double outlet right ventricle associated with common atrioventricular canal: report of nine anatomic specimens.

Double outlet right ventricle associated with complete atrioventricular (AV) canal is a rare malformation. Nine cases are reported. In this abnormality the anterior AV leaflet is undivided and free floating and the aortic and pulmonary orifices are in the same frontal plane. In four of the nine cases, the conus was bilateral, but it was slightly hypoplastic in two. In five cases there was no subaortic conus and there was mitral-aortic continuity through the ventricular septal defect. Pulmonary stenosis was present in eight cases. Radiograms may best demonstrate the anatomy of the ventricular septal defect; it extends far anteriorly below the aortic valve, and its inferior rim is deviated by the trabecula septomarginalis.

[Congenital mesoblastic nephroma. Study of five cases and review of the literature (author's transl)]. / Le néohrome mésoblastique congénital. Analyse de cinq observations et revue de la littérature.

Mesoblastic nephroma (individualized by Bolande in 1967) is a congenital renal tumor sometimes locally and regionally aggressive but never giving metastases, in contrast with nephroblastoma. It almost always occurs in the newborn. Therefore, every renal tumor discovered before twelve months must evoke mesoblastic nephroma. No preoperative adjuvant treatment must be used in infants under six months old. Considering five personal observations and review of literature, the authors expose the main etiologic and clinical characteristics of the disease, the gross and microscopic features which allow its diagnosis and the histogenetic theories of this curious lesion, probably border-line between neoplasias and dysplasias of renal parenchyma.

[Neonatal mortality and morbidity. Priorities in perinatal care (author's transl)]. / Mortalité et morbidité néonatales. Les nouveaux objectifs de la prévention.

Perinatal mortality rates have been decreasing from 25 to 15 0/00 at the Port-Royal maternity hospital from 1969 to 1978. The incidence of materno-foetal infection has been stable within the last 10 years, around 1.2% live-births; mortality linked with these infections represents 28% of early neonatal deaths and remains nearly as high as mortality from malformations. The incidence of Idiopathic Respiratory Distress Syndrome has been decreasing as low as 0.3% live births (14% between 28 and 34 weeks of gestation). The risk appears not high enough to justify the systematic use of prenatal glucocorticoids. Birth injury in the full term newborn occurs at a rate of 1 0/00 births in the most severe cases. In cases of moderate severity, the incidence has been decreasing from 1% to 1 0/00 births within the last 5 years, probably due to improved obstetrical care.

[Radiological aspects of lipomas of the spinal column. A report on four cases (author's transl)]. / Aspects radiologiques des lipomes rachidiens. A propos de quatre observations.

Observation of the four cases reported and a review of the published literature suggest that spinal column lipomas can produce two entirely unrelated types of radiological image. 1. An image of cord-like appearance and variable width which joins the filum terminale to the sacrum, and is usually associated with enlargement of the spinal cord at the same level. This image can be demonstrated by both gas myelography and opaque myelography, and is produced by a lipoma of the filum terminale. The cord image is either that of an ectopic spinal cord or that of the lipomatous tumor itself, which joins the filum terminale to the sacrum. A spina bifida is often associated with these tumors, which can be intradural alone, which is very rare, or both intradural and epidural, and are often associated with enlargement of the spinal canal. 2. A fairly specific blocking-type of image which can be seen by opaque myelography, and consists of fringed bands which become progressively shorter from above downwards until being completely blocked. This appearance, which is extremely rare, is peculiar to intramedullary lipomas, the image probably corresponding to the dissociation of the medullary fiber bundles by the tumoral cords.