Impacto ambiental sobre la rotura de aneurisma de aorta abdominal

2009 
espanolIntroduccion. Los factores ambientales habitualmente se han relacionado con la rotura de aneurismas de aorta abdominal (AAA). El objetivo de este estudio es analizar su influencia con la posible estacionalidad y rotura de los AAA. Pacientes y metodos. Se diseno un estudio ecologico retrospectivo estratificado por estaciones utilizando una serie de 106 AAA rotos registrados durante el periodo 2000-2007 y confirmados mediante tomografia computarizada y cirugia. Como variables ambientales se registraron la presion atmosferica, temperatura y humedad relativa al dia de la rotura, asi como la fase lunar correspondiente a ese dia. Todos estos datos fueron facilitados y procesados por el Centro Meteorologico Regional. Resultados. La edad media de la serie fue de 73 anos (rango: 50-91 anos), con un predominio franco de varones (98,1%). La tasa de mortalidad global fue del 58,5%. Mediante un histograma de frecuencias se observo una mayor incidencia de AAA rotos en otono (32,1%). La unica variable que presento diferencias estadisticamente significativas (p EnglishIntroduction. Environmental factors have commonly been relatad with the ruplure of abdominal aorlic aneurysms (AAA). The aim of this study is to analyse their influence on the possible seasonality and rupture of AAA. Patients and methods. A retrospeclive ecological sludy, stratified by seasons, was designed drawing on a series of 106 cases of ruptured AAA recorded over the period 2000-2007 and conjirmed by means of computerised tomography and surgery. Atmospheric pressure, temperature and relative humidity on the day of the rupture, and the phase of the moon on ihat same day, were recorded as environmental variables. All these data were provided and processed by the Regional Meteorological Centre. Results. The mean age of the series was 73 years (range: 50-91 years), and there was a clear predominance of male patients (98.1%). The global rate of mortality was 58.5%. A histogram of frequencies revealed a higher incidence of AAA ruptures in autumn (32.1%). The only variable that showed statistically significant dijferences (p
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