Which of the following is a potential outcome of hallucinogen overdose?

A potential outcome of hallucinogen overdose is indeed cardiac arrest. Hallucinogens, such as LSD or psilocybin mushrooms, can significantly alter the body's physiological functions. At high doses, these substances may lead to severe disruptions in the cardiovascular system, potentially triggering arrhythmias, increased heart rate, hypertension, or, in extreme instances, cardiac arrest. The risk amplifies when hallucinogens are combined with other substances, including stimulants or alcohol, leading to increased strain on the heart.

While enhanced sensory perception and visual acuity can occur as part of the drug's intended effects, these are not considered dangerous outcomes related to overdose. Increased reflexive movements may also be observed, but they do not carry the same level of risk as a serious medical emergency like cardiac arrest. Understanding the severe and sometimes life-threatening outcomes of hallucinogen overdose is crucial for both prevention and management in clinical settings.