Morphine should not be used in:: (A) Ischaemic pain, (B) Biliary colic, (C) Cancer pain, (D) Post-operative pain
Answer is B. Ans. B. Biliary colicOpioids have potent analgesic effect via mu, kappa receptor. They are known to increase the intrabilliary pressure by constricting the smooth muscle. Therefore, they are contraindicated in biliary colic.