Locally Propagated Activation Immediately After Internal Defibrillation

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چکیده

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Locally propagated activation immediately after internal defibrillation.

BACKGROUND Electrical mapping studies indicate an interval of 40 to 100 ms between a defibrillation shock and the earliest activation that propagates globally over the ventricles (globally propagated activation, GPA). This study determined whether activation occurs during this interval but propagates only locally before being blocked (locally propagated activation, LPA). METHODS AND RESULTS I...

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A previous two-dimensional (2D) ultrasound study suggested that there is relaxation of the myocardium after defibrillation. The 2D study could not measure activity occurring within the first 33 ms after the shock, a period that may be critical for discriminating between shock- and excitation-induced relaxation. The objective of our study was to determine the left ventricular (LV) geometry durin...

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ژورنال

عنوان ژورنال: Circulation

سال: 1998

ISSN: 0009-7322,1524-4539

DOI: 10.1161/01.cir.97.14.1401