氣喘兒童休息及活動狀態下的心率變異度
邱泓文
Chen SR;Chen WT;Chiu HW;Jeng C
摘要
本研究旨在比較氣喘兒童及一般健康兒童在休息狀態及活動狀態下心率變異度之差異，以立意取 樣共收集 16 位氣喘兒童及 19 位健康兒童。兩組個案均給予 10 分鐘的靜坐休息，隨後再給予 10 分鐘的踏步運動，期間分別測量其休息狀態及活動狀態下後 5 分鐘的穩定心電圖作為心率變異度 的頻譜分析，最後以 t 檢定比較兩組間之差異。研究結果顯示，在休息狀態下，兩者心率變異度 無顯著差異，而活動狀態下，氣喘兒童之 HF(t=2.39, p<0.05)及 HFn. u.(t=4.12, p<0.01)顯著高於健 康兒童。顯示氣喘兒童在運動後，相較於健康兒童有較高的副交感神經反應，但此結果可能會導 致氣喘症狀的發作。因此，未來在氣喘兒童的健康照護中，如何兼顧運動的好處及避免運動時氣 喘的發作是所有醫護人員需繼續努力的方向。本研究結果不但可提供未來從事國內相關氣喘心率 變異度研究之以較，並可作為醫護人員改善促進氣喘疾病照護品質之參考。Abstract
The purpose of this study was to compare the heart rate variability (HRV) between healthy and asthmatic children at rest and during exercise. A total of 16 asthmatic children and 19 healthy children were purposively recruited in this study. Chidlren in both groups were asked to sit ten minutes and step exercise ten minutes. All children's steady EKGs were recorded after five minutes at rest and during exercise in order to analyze the changes of HRV using frequency domain. Finally, t-test was used to compare the differences between groups. The results showed that no difference of HRV was found at rest between two groups. However, the HF (t=2.39, p<0.05), and HFnu (t=4.12, p<0.01) were significantly higher in asthmatic children than in healthy children during exercise. The finding implied that the parasympathetic response was more sensitive in children with asthma than those of healthy children, but it may cause asthma attack. Hence, health care providers should endeavor to balance the pro and con of exercise and to avoid asthma attack for the future asthma care. The findings of this study can serve as valuable information for future asthma HRV research comparison and for improving the quality of asthma care.
