The nurse is caring for a client who has begun to take sertraline (Zoloft) for newly diagnosed depression. Which of the following conditions is associated with an overdose of this medication class?

Choice A reason: Tardive Dyskinesia is a movement disorder that is primarily associated with long-term use of certain antipsychotic medications, particularly the older, first-generation antipsychotics. It involves involuntary, repetitive body movements, and is not typically linked to SSRIs like sertraline. Therefore, while Tardive Dyskinesia is a serious condition, it is not a risk associated with an overdose of sertraline, and this choice is not relevant to the context of the question regarding SSRI overdose. Choice B reason: Increased arousal is not a condition commonly associated with sertraline overdose. While SSRIs can sometimes lead to symptoms such as anxiety or restlessness as side effects, these are not typically the primary concern with an overdose. Overdose of sertraline and other SSRIs tends to lead to more severe and potentially life-threatening conditions, so increased arousal does not encompass the critical nature of such an event. Choice C reason: Serotonin syndrome is a serious and potentially life-threatening condition that can occur with an overdose of sertraline, which is an SSRI. Serotonin syndrome results from an excess of serotonin in the brain and manifests with symptoms such as agitation, confusion, rapid heart rate, dilated pupils, loss of muscle coordination or twitching muscles, heavy sweating, diarrhea, headache, shivering, and goosebumps. In severe cases, it can lead to high fever, seizures, irregular heartbeat, or unconsciousness. Because SSRIs increase serotonin levels in the brain, overdose significantly heightens the risk of this condition, making this the correct answer. Choice D reason: Hypertensive crisis is not typically associated with an overdose of SSRIs like sertraline. While some antidepressants, particularly certain types of MAO inhibitors, can increase the risk of hypertensive crisis, SSRIs do not usually have this effect. The hypertensive crisis involves dangerously high blood pressure and requires immediate medical attention, but it is not relevant to the context of sertraline overdose, making this an incorrect choice.