A 31-year-old woman reported dizziness in the early postpartum period after receiving dexmedetomidine. The ECG was misinterpreted as complete heart block; however, more careful analysis revealed an atypical Wenckebach pattern with dual AV nodal conduction and termination of nonconducted P waves with junctional escape beats. The patient's rhythm returned to sinus after stopping dexmedetomidine.

Atypical Wenckebach patterns account for greater than 50% of patients with Mobitz Type I AV block and can be misinterpreted as high-grade AV block. This case highlights the causes of atypical Wenckebach patterns and how careful analysis of intervals can help clinicians avoid misdiagnosis.

一名 31 岁的女性在接受右美托咪定后报告产后早期头晕。心电图被误解为完全性心脏传导阻滞；然而，更仔细的分析揭示了非典型的温克巴赫模式，具有双房室结传导和非传导P 波终止与交界逸搏。停止右美托咪定后患者心律恢复窦性。

非典型 Wenckebach 模式占 Mobitz I 型 AV 传导阻滞患者的 50% 以上，可能被误解为高级别 AV 传导阻滞。该病例强调了非典型温克巴赫模式的原因，以及仔细分析间隔时间如何帮助临床医生避免误诊。