英语新闻听写 阿类药物治疗慢性疼痛并无明显效用（在线收听）

According to a study by the Veterans Administration, the long-term use of opioids has no major difference for patients dealing with chronic pain.

退伍军人管理局研究发现，长期服用阿片类药物对病人治疗慢性疼痛并无重要疗效。

Researchers based their findings after examining the electronic health records of 600 patients with chronic pain and opioid prescriptions.

在检查过600名服用阿片类药物的慢性疼痛患者的电子健康记录后，研究人员以此检查发现为基础。

The researchers found that pain intensity fluctuated over time for patients on opioids.

研究人员发现服用阿类药物病人的疼痛强度随时间浮动。

However, they also found that discontinuing opioid treatment had no affect on the pain experienced by patients.

然而，他们还发现终止阿片类药物治疗对病人的疼痛并无影响。

The researchers added that their study provides empirical evidence that pain intensity remains unchanged after long-term opioid therapy.

研究人员还表示他们的研究提供了实验性证据证明在经过长期阿类药物治疗后，疼痛强度仍未有所改变。