What is the purpose of administering naloxone (Narcan)?

The purpose of administering naloxone, commonly known by the brand name Narcan, is specifically to reverse opioid overdoses. Naloxone is an opioid antagonist, which means it works by binding to the same receptors in the brain that opioids affect. In the case of an opioid overdose, these receptors are often overstimulated, leading to life-threatening respiratory depression or failure. When naloxone is administered, it competes with the opioids for these receptors, effectively reversing the overdose effects, restoring normal breathing, and allowing the individual to regain consciousness if used in a timely manner.

The other choices presented do not pertain to the function of naloxone. It is not indicated for treating severe allergic reactions, increasing blood pressure, or managing anxiety attacks. Each of those conditions would require different approaches and medications tailored specifically to their unique pathophysiological mechanisms. Understanding the specific action of naloxone is crucial for healthcare providers, particularly in emergency situations involving suspected opioid overdoses.