急性心肌梗死时房性早搏后的室性异位活动。
Ventricular ectopic activity after premature atrial beats in acute myocardial infarction.
作者信息
Myerburg R J, Sung R J, Gerstenblith G, Mallon S M, Castellanos A
出版信息
Br Heart J. 1977 Sep;39(9):1033-7. doi: 10.1136/hrt.39.9.1033.
Abstract
Ventricular ectopic activity occurred only after premature atrial beats in a patient with an acute inferior wall myocardial infarction. The ventricular ectopic activity occurred only when the coupling interval between the premature atrial beats and preceding sinus beat was less than or equal to 0-44 s. The sinus cycle length, however, appeared to influence the form of expression of ventricular ectopic activity independent of coupling intervals, with single premature ventricular contractions occurring at cycle lengths greater than or equal to 0-72 s, couplets at cycle lengths of 0-68 to 0-71 s, and ventricular tachycardia at cycle lengths less than or equal to 0-67 s.
摘要
在一名急性下壁心肌梗死患者中，室性异位活动仅在房性早搏之后出现。仅当房性早搏与前一个窦性搏动之间的联律间期小于或等于0.44秒时，才会出现室性异位活动。然而，窦性周期长度似乎独立于联律间期影响室性异位活动的表现形式，当周期长度大于或等于0.72秒时出现单个室性早搏，在周期长度为0.68至0.71秒时出现成对室性早搏，在周期长度小于或等于0.67秒时出现室性心动过速。
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