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EV1205
无已知危险因素的年轻男性氯氮平相关QTc间期延长:病例报告
CLOZAPINE-ASSOCIATED QTC PROLONGATION IN A YOUNG MALE WITHOUT KNOWN RISK FACTORS: A CASE REPORT
报告人: Burak Emmiler
国家: Turkey
机构: Health Sciences University, Erenköy Mental and Nervous Diseases Training and Research Hospital
一名无传统危险因素的22岁男性患者在使用相对低剂量氯氮平后,QTc间期延长至520 ms;随着减量及停药,QTc间期呈剂量依赖性缩短并恢复正常。
本文旨在通过一例病例说明,即使不存在经典危险因素,使用氯氮平仍可能发生QTc间期延长。患者为22岁男性,因治疗依从性差、在家中出现攻击行为、被害妄想以及幻听和幻视就诊于精神科急诊。其症状始于17个月前,曾在一次住院期间接受10次电休克治疗(ECT),被诊断为未特指的非器质性精神病(ICD-10:F29),出院时用药为氨磺必利800 mg/日、比哌立登2 mg/日、珠氯噻醇长效注射剂200 mg/2周及奥氮平20 mg/日。因治疗抵抗及依从性差,在基线检查结果正常的情况下(白细胞9.54 K/µL、中性粒细胞5.6 K/µL、心电图正常),开始逐步滴定氯氮平剂量。剂量滴定记录显示,基线QTc间期为388 ms,第7天剂量为100 mg时仍为388 ms;至第14天、剂量达225 mg/日时,QTc间期在无症状的情况下延长至520 ms(同期白细胞11.22 K/µL、中性粒细胞7.1 K/µL),较基线增加132 ms。根据心脏科建议,逐步减少氯氮平剂量并换用奥氮平,QTc间期随剂量降低而缩短(第15天,200 mg时为464 ms;第17天,150 mg时为444 ms;第19天,100 mg时为428 ms;第21天,50 mg时为403 ms),停药后恢复正常。患者以奥氮平20 mg/日及利培酮长效注射剂50 mg/15日的方案安全出院。未发现电解质紊乱、躯体共病或可导致该变化的合并用药。本病例强调,由于无法确定QTc间期达到危险程度延长的起始时间,常规监测间隔可能不足以发现特异质反应;即使是年轻、低风险的患者,在早期剂量滴定阶段也需要更频繁地进行心电图监测。
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APA 7: Emmiler, B., et al. (2026, September 23-26). Clozapine-associated qtc prolongation in a young male without known risk factors: a case report [E-poster]. 26th WPA World Congress of Psychiatry (WCP 2026), Stockholm, Sweden. https://cslide.ctimeetingtech.com/wcp26/attendee/eposter/file/2260
Vancouver: Emmiler B, et al. Clozapine-associated qtc prolongation in a young male without known risk factors: a case report [e-poster]. 26th WPA World Congress of Psychiatry (WCP 2026); 2026 Sep 23-26; Stockholm, Sweden. Available from: https://cslide.ctimeetingtech.com/wcp26/attendee/eposter/file/2260
作者姓名和标题格式由大会系统自动生成;使用前请与原始海报核对。
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