Pain relief is impoant for hea disease patients as pain can cause tachycardia, which in turn can cause cardiac failure. in hea disease patients vaginal delivery is indicated. C section done for obstetric indications only Epidural and spinal techniques are the most effective means of providing pain relief for labor. These are also known as regional techniques because pain relief is limited to a specific anatomical region. These modalities are also known as neuraxial techniques, since both the approaches involve administration of drugs that exe their effects in the axial poion of the CNS.