<prompt> True about epidural anaesthesia in pregnancyGiven through subarachnoid spaceIncreases cardiac outputDecreases venous returnAll  <response>: C i.e. Decrease venous return In epidural anesthesia, the anesthetic drug is injected in epidural spaceQ in spinal anesthesia the drug is injected in subarachnoid spaceQ. CVS changes that occur after epidural anesthesia are summarized in box? Hypotension 20-30 .1. in B.P. or systolic B.P. most common SEQ. It is treated by IV ephedrine, IV fluids, IV phenylepherine, 02 supplement left uterine displacementQ Use of head down Trendelenburg position is controversial because of its potentially detrimental effects on pulmonary gas exchange.Q In the absence of hypotension neither epidural nor spinal have any effect on the uterine blood flow. placental circulation 