<prompt> Drug used to prolong the action of LA in Hypeensive ptsClonidineFelypressinDexmeditomidateNoradrenalin  <response>: Vasoconstrictor are used along with local anaestheticsAdrenaline is the most commonly used vasoconstrictor. Less commonly phenylephrine is also used. Felypressin synthetic vasopressin does not affect BP HR - Preferred in patients with cardiovascular diseaseRefer: Morgan and Mikhails Clinical Anaesthesiology, 5th edition, pg no.270-271 