In opioid intoxication, which finding is typically expected in a patient’s vitals?

• A. Normal pupils
• B. Increased pulse
• C. Constricted pupils
• D. Normal Glasgow Coma Score

Answer: (C)

In opioid intoxication, constricted pupils, often referred to as "miosis," is a classic and expected finding. Opioids bind to specific receptors in the brain and spinal cord, leading to various effects, one of which is the stimulation of the parasympathetic nervous system. This stimulation results in the constriction of the pupils, presenting as pinpoint pupils in nearly all cases of opioid overdose.

The vital signs in opioid intoxication may also include respiratory depression, bradycardia (slowed heart rate), and alterations in consciousness depending on the severity of the intoxication. However, the characteristic response regarding pupils stands out distinctly in this context. Normal pupils would suggest an absence of opioid influence, while an increased pulse is contrary to the effects typically produced by opioids, which tend to decrease heart rate. Similarly, a normal Glasgow Coma Score would indicate alertness and could imply that the patient is not experiencing significant opioid effects, which is inconsistent with the intoxication state expected in this scenario. Thus, the presence of constricted pupils is the hallmark sign of opioid intoxication and is crucial for identifying this condition clinically.