Which is a sign of severe opioid overdose?

• A. Rapid heart rate
• B. Unresponsiveness
• C. High blood pressure
• D. Increased respiratory rate

Answer: (B)

Unresponsiveness is a key sign of severe opioid overdose because opioids significantly depress the central nervous system, leading to adverse effects such as diminished consciousness levels. In cases of overdose, individuals may become completely unresponsive, unable to be awakened, and fail to respond to verbal or physical stimuli. This unresponsiveness is primarily due to the sedative effects of opioids on brain function, which can lead to respiratory depression, a life-threatening condition.

In contrast, other symptoms associated with opioid overdose may include respiratory depression, which can also lead to hypoxia, but the hallmark of severe overdose is the marked reduction in alertness and responsiveness. Understanding this aspect is crucial for recognizing and responding to potential opioid emergencies effectively.