摘要
目的 :探讨重现量化分析 (RQA)方法评测心肺系统非线性耦合中的可行性。方法 :健康家兔 17只 ,采用 RQA方法 ,分析了 17只家兔在注射异丙肾上腺素前后呼吸 -心率和呼吸 -血压的耦合关系的变化。结果 :注射异丙肾上腺素后 ,重现百分比、决定性百分比和重现熵都发生了显著的变化 (与注射前比 ,均 P<0 .0 5 )。结论 :RQA方法可用于分析心肺系统的非线性耦合。
AIM:To evaluate the feasibility of recurrence quantification analysis(RQA) in measuring cardiorespiratory nonlinear coupling. METHODS:RQA methods were applied to experimental data obtained from 17 rabbits. The changes of nonlinear coupling patterns of respiration-heart rate and respiration-blood pressure were observed before and after isoprenaline was used. RESULTS:The percent recurrence, the percent determinism and the entropy of recurrence were significantly different(P<0.05) after isoprenaline was used. CONCLUSION:RQA is valuable in quantifying different degrees of non-linear coupling of respiration and cardiovascular variability signals.
出处
《心脏杂志》
CAS
2004年第2期118-120,共3页
Chinese Heart Journal
关键词
重现量化分析
非线性耦合
心率
呼吸
recurrence quantification analysis
nonlinear coupling
heart rate
respiration
