Periodic heart rate decelerations in premature infants.
Periodic heart rate decelerations in premature infants.
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DOI:
10.1258/ebm.2010.009336
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发表时间:
2010-04
期刊:
影响因子:
--
通讯作者:
Delos JB
中科院分区:
文献类型:
--
作者:
Flower AA;Moorman JR;Lake DE;Delos JB
The pacemaking system of the heart is complex; a healthy heart constantly integrates and responds to extracardiac signals, resulting in highly complex heart rate patterns with a great deal of variability. In the laboratory and in some pathological or age-related states, however, dynamics can show reduced complexity that is more readily described and modeled. Reduced heart rate complexity has both clinical and dynamical significance – it may provide warning of impending illness or clues about the dynamics of the heart’s pacemaking system. In this paper, we describe uniquely simple and interesting heart rate dynamics that we have observed in premature human infants -- reversible transitions to large-amplitude periodic oscillations -- and we show that the appearance and disappearance of these periodic oscillations can be described by a simple mathematical model, a Hopf bifurcation.
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影响因子:
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