When dealing with a patient who is suspected to have overdosed on opioids, which sign would you anticipate finding?

• A. Increased heart rate
• B. Pupillary constriction
• C. Elevated blood pressure
• D. Anxiety and restlessness

Answer: (B)

When evaluating a patient who is suspected of an opioid overdose, one of the hallmark signs to be aware of is pupillary constriction, often referred to as "miosis." Opioids typically lead to a decrease in sympathetic nervous system activity, which results in constricted pupils. This is a physiological response to opioid binding to receptors in the central nervous system, which depresses neuronal activity.

In contrast, other symptoms associated with opioid toxicity, such as increased heart rate, elevated blood pressure, anxiety, or restlessness, are more indicative of stimulant overdoses or may be symptoms stemming from withdrawal rather than an overdose scenario. Opioid overdose more commonly presents with respiratory depression, decreased consciousness, and the characteristic pinpoint pupils, making pupillary constriction a key indicator in these situations.