Palabras clave: hernia inguinal; plastia inguinal; malla de polietileno.Resumen. La malla de polietileno de baja densidad (PEBD) tipo mosquitero, se ha utilizado como una alternativa barata a la de polipropileno (PP) para la reparación de hernias inguinales sin tensión. El objetivo fue comparar ambas en términos de dolor, infección, rechazo y recurrencia. Se realizaron 31 plastias inguinales con técnica de Liechtenstein en 28 pacientes, utilizando en forma aleatoria 1) malla de PEBD ó 2) malla PP. Se registró en forma ciega infección y dolor en el postoperatorio, a los 7 y 30 días, y rechazo o recurrencia a 3, 6 y 18 meses. No existieron diferencias significativas entre los grupos de PEBD y PP, en dolor, infección, rechazo o recurrencia. El costo por procedimiento fue 58% menor en el grupo de PEBD. Se concluye que la malla de PEBD es una alternativa segura y económica para la plastia inguinal abierta sin tensión ya que es 500 veces más económica que la de polipropileno.Malla de polietileno en plastia inguinal sin tensión 319 Abstract. The low-density polyethylene (LDPE) mesh mosquito-net type has been used as an economical alternative to the polypropylene (PP) mesh for the repair of inguinal hernias without tension. The objective of this work was to compare both materials in terms of resulting pain, infection, rejection and recurrence of the hernia. We performed 31 inguinal hernioplasties with the Lichtenstein technique in 28 patients, randomly using the 1) LDPE mesh or the 2) PP mesh. Postoperative infection and pain were recorded at seven and 30 days, and rejection or recurrence at three, six and 18 months. There were no statistically significant differences between the groups of LDPE and PP, with respect to infection, recurrence and rejection frequency. Measured pain was similar in both groups. The cost per procedure in the LDPE group was 58% lower compared to the PP group. We concluded that the properties of the LDPE mesh are similar to those of the PP mesh. There were no differences in infection, rejection and recurrence, and LDPE mesh is 500 times cheaper than the polypropylene mesh.
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