Which of the following is NOT a symptom of opioid toxicity?

Opioid toxicity is characterized by a variety of symptoms resulting from excessive opioid use. Among these symptoms are miosis (constricted pupils), hyporeflexia (reduced reflexes), and bradycardia (slowed heart rate).

Miosis is a classic sign of opioid exposure, as opioids often cause constriction of the pupils. Hyporeflexia can occur due to central nervous system depression induced by opioids, resulting in diminished reflexes. Bradycardia is another common effect, as opioids can inhibit sympathetic nervous system activity, leading to a slower heart rate.

Hypertension, on the other hand, is not typically associated with opioid toxicity. Opioids generally cause a decrease in blood pressure, leading to hypotension rather than hypertension. Therefore, identifying hypertension as a symptom would suggest a misunderstanding of the common physiological effects of opioids, making it the correct choice for the symptom that is NOT consistent with opioid toxicity.