Why Would Opioid Medications Cause Fainting?

Opioid medications are often prescribed to help control pain, but they can sometimes have unpleasant side effects. In addition to the risk of addiction andabuse，麻醉止痛药有时会让人们带走。

这可能是患者服用药物以及任何家庭，朋友或过客怎样的可怕经验，碰巧在那里见证了意识的丧失。为了理解为什么阿片类药有时会导致人们晕倒，了解这些毒品如何工作。

Note:以下是为了更好地帮助了解阿片类药物，并不是作为对医疗的建议。

阿片类药物和晕倒

Opioids—medications made directly from opium extract or a synthetic version of opium—can cause loss of consciousness and possibly death. These medications are also known asnarcotics。A drop in blood pressure is fairly common.

护理人员施用阿片类药物以缓解疼痛，并在某些类型的心脏相关的紧急情况下减少心脏的工作量（通常用于心脏病发作期间的胸痛或充血性心力衰竭）。导致阿片类药物血压降低的作用是相同的动作，减少了心脏的工作量。为了更好地了解阿片类药物如何做到他们所做的事情，让我们先看看阿片类药物过量的症状。

Opioid Background

These medications are often used for pain control, but they have a long history of abuse. The opioids most people recognize aremorphine，vicodin，疑要,oxycontin，和海洛因。在这个课堂上有几种更多药物，许多不同国家的名称不同（Rapifen和Transtec是英国的常见名字）。

由拜耳公司开发的海洛因（是的，与Aspirin-and Subly上只公布一年），自1924年以来，在美国并未合法，并且在全球范围内不再具有法律商业生产。

Besides administering opioids therapeutically (usually morphine, but paramedics in some areas may carry different versions) paramedics are often called upon to treat opioid overdoses. There are three classic signs of an opioid overdose:

• 无意识where the patient is almost always completely unresponsive
• 收缩学生(有时称为查明学生)
• Breathing slowly or not at all, which is called apnea or respiratory arrest

The most common opioid overdoses seen by paramedics involve heroin, but any opioid medication can cause the signs and symptoms above. The problems with opioid medications don't only happen with overdose. Some opioids, such as morphine, cause decreases in heart output and blood pressure.

How this happens is still being studied and it seems that not all opioid medications are created equal. Individual reactions to opioids vary from one person to the next, meaning that one person's reactions and side effects to a drug like morphine or fentanyl might be very different than someone else's.

除了任何直接影响阿片类药物可能对血压上有什么效果，其他相关的反应可能会影响血压，并且可能有助于晕厥等其他事情。

组胺和海洛因

刻板上，海洛因成瘾者被描绘成瘙痒，并且刮伤很多。可能存在以下原因：阿片类药物引起组胺的释放。组胺是在过敏反应期间释放的相同的东西。过敏反应导致瘙痒等。

组胺还在过敏反应中发挥作用，这是一种严重的过敏反应，可能是危及生命的。过敏反应的症状通常包括低血压。结合一些阿片类药物产生的血压的典型减少，与组胺反应相关的低血压可导致血压下降，晕染。

阿片类药物的便秘

阿片类药物也被记录了充分的便秘原因。慢性用户可以制定严重的便秘，这可能导致胃肠道痉挛。

Gastrointestinal cramping stimulates the vagus nerve, which leads to lower heart rates and drops in blood pressure. Cramping is another potential trigger for fainting due to sudden losses of blood pressure.

Important Considerations

尽管Opiods是一些最古老的止痛药，但仍有很多我们不了解或理解阿片类药物。随着阿片类药物的所有可能的反应和影响，血压损失足够差，不能导致意识丧失（晕倒）并非不可能。添加阿片类药物的镇静作用及其减少呼吸倾向只会使事情变得更加复杂。

Ultimately, for some people, opioid medications simply may not be the answer. But given the important role that these pain control agents can play, it's worth exploring the options with a doctor in cases involving severe pain. With expert supervision and safe and careful titration, pain control and improved quality of life can be achieved.