Drug used to prolong the action of LA in Hypeensive pts: (A) Clonidine, (B) Felypressin, (C) Dexmeditomidate, (D) Noradrenalin
Answer is B. 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 disease(Refer: Morgan and Mikhail's Clinical Anaesthesiology, 5th edition, pg no.270-271)