<prompt> A patient in labor ward was given opioid analgesic. Which drug should be kept ready for emergency?NaloxoneLignocaineDiphenhydramineFentanyl  <response>: ANS. A Opioid antagonists1. Naloxone2. Natrexone3. Nalmefene Clinical uses of Naloxone1. Drug of choice for morphine poisoning 0.4-0.8 mg IV every 2-3 min; max 10 mg2. To reverse the respiratory depression due to intraoperative use of opioids3. Diagnosis of opioid dependence4. Partially reverses alcohol intoxication 