求翻译：通常，阿托品作为麻醉前用药减少腺体分泌，但是阿托品是非选择性M受体阻滞药，使用后增加心率，增加心肌耗氧，而长托宁选择性作用于M1，M3受体，对M2受体几乎没有作用，不增加心脏氧耗，可以比较安全用于老年患者和心肌缺血患者。是什么意思？

Generally, atropine as a pre-anesthetic medication to reduce the glandular secretion, but the atropine non-selective m receptor blockers, the use of increased heart rate, increased myocardial oxygen consumption, and Changtuoning selective role in the m1, m3 receptor, m2 receptor almost no effect, no

Typically, atropine as a pre-anesthesia medications reduce glandular secretions, but non-selective atropine M-block products after use, increase heart rate, increased myocardial oxygen consumption, and long and rather selective role in M M 1, 3, 2 of the Commonwealth M almost no role, not to increas

Usually, the atropine took before the anaesthesia applies drugs the reduced gland secretion, but the atropine right and wrong selective M acceptor hinders the medicine, after the use to increase the heart rate, the increase cardiac muscle consumes the oxygen, but the long request rather selectivity

Typically, as preanesthetic medication of atropine to reduce glandular secretions, but atropine is a selective m receptor blockers, and increased heart rate after using, increased myocardial oxygen consumption, penehyclidine selective effects on M1,M3 receptors, on the M2 receptors almost had no eff

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