You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Which of the following is used as a preanaesthetic medication? and explain in detail?
Ans. is 'b > d' i.e., Glycopyrrolate > Hyoscine Drugs used in premedication1.Sedative - antianxiety-Diazepam/Lorazepam/Midazolam.-Lorazepam is used most commonly-Midazolam is used for day care surgery2.Opioids-Morphine/Pethidine3.Anticholinergics-Atropine/ Hyoscine/ Glycopyrrolate.4.Neuroleptics-Haloperidol/chlorapromazine/triflupromazine5.H2 blocker or proton pump inhibitor-Ranitidine/Famotidine, omeprazole/Pantoprazole.6.Antiemitics-Metoclopramide/ Domperidone/ Ondansetron/ Hyoscine/ Ondansetron* To control secretion, anticholinergics (Glycopyrrolate, atropine or scopolamine) are used. Gycopyrrolate is a preferred anticholinergic over atropine and scopolamine (hyoscine) because it does not crosses blood brain barrier and devoid of central side effects.Note: Atropine is a natural alkaloid, used in OPC poisoning and has profound central CNS effects.