Interpolated premature ventricular contractions with postponed compensatory pauses: a misnomer?

Castellanos, A; Brenes, Juan C.; Chirinos-Medina, Julio A.; Carpio, Freddy Del

doi:10.1016/j.jelectrocard.2005.12.003

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2017

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“…In 1953, Katz and Langendorf described a phenomenon related to the interpolation of PVCs, with an excessively long PR interval in the postextrasystolic beat giving rise to a dropped subsequent beat due to a very short RP interval, the so called "postponed compensatory pause" (Katz, Langendorf, & Cole, 1944;Langendorf, 1953). Many years later ( 2006), Castellanos, Brenes, Chirinos-Medina, & del Carpio (2006) argued that this was a misnomer, since interpolated PVCs, by definition, do not have a compensatory pause.…”

Section: Ecg Analysismentioning

confidence: 99%

Bigeminal sandwiches galore

Lindow

Niklasson

Manna

et al. 2017

Noninvasive Electrocardiol

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A long run of PVCs "sandwiched" in between the sinus beats resulting in an almost doubling of the heart rate-interpolated PVCs in bigeminy-is described. This case illustrates three interesting aspects of interpolated PVCs. Although they are not uncommon, long runs of interpolated PVCs in bigeminy are rare findings. In this case, the arrhythmia had a duration of 3 minutes. Second, it illustrates the "age-old wisdom" of partial retrograde conduction. Also, even though the arrhythmia resulted in an almost doubling of the heart rate, the patient remained asymptomatic.

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Section: Ecg Analysismentioning

confidence: 99%