<prompt> In pregnancy, there is decreased requirement of anesthetic agent bo all except reasonsHigher sensitivity of nerves to LAEngorged spinal veinsDecreased subarachnoid spaceIncreased lumbar lardosis  <response>: D i.e. Increased lumbar lardosis Pregnant patients display enhanced sensitivity to LA during regional anesthesia because of hormonal factors and engorgement of epidural venous plexus resulting in decreased epidural space and subarachnoid space CSF fluid volumeQ. This enhances the cephalad spread of LA solution during spinal and epidural anesthesia. 