| Popis: |
In the United States, 4.3 million adults are regularly taking opioid medications. Opioid-induced constipation (OIC) is underdiagnosed considering the prevalence of opioid use among Americans. This review is intended to clarify issues related to OIC. OIC is caused by opioids binding to specific receptors in the gastrointestinal system, resulting in various anatomic effects, including decreased gastric motility, increased sphincter tone, reduced intestinal secretions, and increased water absorption in the bowel. Various treatments include water and fiber consumption, laxatives, enemas, cessation of opioids, and central and peripheral opioid antagonists. OIC is treatable, but timely diagnosis and patient education are paramount for successful resolution. Key words: chronic pain; constipation; mu, delta, and kappa receptors; myenteric plexus; opioid; opioid-induced constipation; opioid receptor antagonists; submucosal plexus |
