ANALYZING OF CHAOTIC CHARACTERISTICS AND SPECTRUM CHARACTERISTICS OF HEART PERIOD SIGNALS ( HPS ) IN CHILDREN WITH ASTHMA

Wei Y-S¹, Xie Z-X², Pi G-H¹

¹Affiliated Hospital, North Sichuan Medical College, Nanchong, China

²Chongqing University of Medical Science, Chongqing, China

Objective: Chaotic characteristics and spectrum characteristics of HPS in children with asthma were studied.

Methods: The HPS of 47 cases of children with asthma were tested by a computerized system for analyzing chaotic characteristics of HPS.

Results: In the parameters of chaotic characteristics of children with asthma, Hrd, Hle, Hfd and Hcc are 4.50±2.06, 3.17±1.26, 1.83±0.08 and 26.34±13.78 respectively. and in parameters of power spectrum, PVV, PVL, PVH PRV, PRL, PRH, RVH, RLH and TFP are 320.61±372.28ms², 221.00±243.86ms², 224.38±327.51ms², 42.84%±18.47%, 30.85%±14.07%, 26.58%±17.63%, 2.72±2.74, 1.79±1.58, and 827.44±933.22ms² respectively.

Conclusion: Most parameters at onset in children with asthma are difference than normal children and at remission in children with asthma very observably (p<0.01). The power rate in very low frequency band is higher observably, it shows that interaction component is predominance comparatively. The parameters of chaotic characteristics are obvious lower. It indicates that the complexity of heart state in children with asthma is reduced, and the control ability of autonomic nervous system for heart is also depressed.

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