<prompt> True about Epidural anesthesia a Effects start immediatelyb CI in coagulopathiesc Given in subarachnoid spaced Venous return decreasesbddabac  <response>: Epidural anesthesia is given outside the dura in epidural extradural space not in subarachnoid space.Onset of effect takes place in 15-30 minutes not immediately. In contrast, spinal anesthesia has immediate effect approximately 5 minutes.Neuraxial block spinal epidural anesthesia is contraindicated in coagulopathy or bleeding diasthesis.Neuraxial block spinal epidural can cause venous pooling and decreased venous return. 