Analgesia for labor and delivery is requested by the obstetrician, almost always in advanced stages of effacement and dilatation, as a result of very old entrenched ideas that still prevail today, even in academic settings, that preach that no analgesia is required during the early phase and that epidural analgesia must be given in the middle of the active phase, once cervical dilatation is 6 or 7 cm. This is in spite of the evidence that epidural analgesia initiated during the early phase is not associated with a higher rate to C-sections.
La analgesia para el trabajo de parto y el parto es solicitada por el obstetra, casi siempre en estadios avanzados de borramiento y dilatación como consecuencia de antiguas y muy arraigadas concepciones, que se mantienen hoy en día, aun en ámbitos académicos, que predican que no se requiere analgesia en la fase latente y que la analgesia epidural debe administrarse promediando la fase activa, dilatación de 6 a 7cm, a pesar de la evidencia de que la analgesia epidural iniciada en la fase temprana no se asocia con mayor tasa de cesáreas.