Foo Fang Shawn, Stiles Martin K, Heaven David
Department of Cardiology Waikato Hospital Hamilton New Zealand.
Department of Medicine University of Auckland Auckland New Zealand.
J Arrhythm. 2020 Jul 20;36(5):939-941. doi: 10.1002/joa3.12408. eCollection 2020 Oct.
Intravenous adenosine is a simple test that can uncover latent preexcitation via an accessory pathway and is useful in the diagnostic workup of sudden cardiac arrest survivors without an identifiable cause. Latent preexcitation is usually associated with left free wall pathways but may also occur in right-sided accessory pathways with slow antegrade conduction. Although intermittent ECG evidence of preexcitation is generally considered a marker of low risk for sudden death, if this is due to an accessory pathway with long atrioventricular conduction time and short effective refractory period (rather than true intermittent conduction via the pathway), the risk for sudden death may be equal to those accessory pathways with manifest preexcitation.
静脉注射腺苷是一种简单的检查方法，可通过旁路发现潜在的预激，对无明确病因的心脏骤停幸存者的诊断性检查很有用。潜在预激通常与左游离壁旁路有关，但也可能发生在具有缓慢前向传导的右侧旁路中。虽然预激的间歇性心电图证据通常被认为是猝死低风险的标志，但如果这是由于房室传导时间长且有效不应期短的旁路（而非真正通过该旁路的间歇性传导）所致，猝死风险可能与有显性预激的旁路相同。
