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 Bronchodilator in COPD and explain in detail?
Ans. is 'a' i.e., Anticholinergics Anticholinergic bronchodilators Anticholinergic acts on receptors located mainly in the larger central airways (Contrast sympathomimetics whose primary site of action is peripheral bronchioles). Parasympathetic tone is the major reversible factor in COPD. Anticholinergics are more effective than sympathomimetics. Ipratropium and tiotropium are anticholinergic bronchodilators. Tiotropium is longer acting than ipratropium. Inhaled ipratropium / tiotropium are bronchodilators of choice in COPD.