疼痛是一种常见症状。剧烈的疼痛不仅使病人痛苦,而且还可引起失眠或其它生理功能紊乱,甚至导致休克。因此,适当地使用镇痛药以缓解疼痛是必要的。按照镇痛药的作用特点,将其分为麻醉性和非麻醉性镇痛药两类。前一类主要指吗啡类及其合成代用品,又称吗啡类镇痛药。其特点为镇痛作用强,但连续应用易成瘾,一般称为“麻醉药品”。为保障人民健 Pain is a common symptom. Severe pain not only pains the patient, but can also cause insomnia or other physiological disorders, even leading to shock. Therefore, the proper use of analgesics to relieve pain is necessary. In accordance with the role of analgesics, will be divided into two categories of narcotic and non-narcotic analgesics. The former mainly refers to morphine and its synthetic substitutes, also known as morphine analgesics. It is characterized by strong analgesic effect, but the continuous application of addictive, commonly known as “narcotic drugs.” To protect people’s health