Background: The child’s central nervous system develops with aging, and heart rate variability (HRV), which is con-trolled by the brain, differs from that of adults. We investigated changes in HRV during sevoflurane ...Background: The child’s central nervous system develops with aging, and heart rate variability (HRV), which is con-trolled by the brain, differs from that of adults. We investigated changes in HRV during sevoflurane anesthesia in children. Methods: One 138 children aged from 2 - 12 years without major underlying problems were enrolled. During maintenance with 2 - 2.5 vol% sevoflurane anesthesia, electrocardiographic data were obtained and power spectral analysis, approximate entropy (ApEn) or Hurst exponent were analyzed and compared in three groups (age 2 - 5 years, 6 - 9 and 10 - 12 years of age). Results: The RR interval increased with aging, but low-frequency powers did not. High- frequency power was greater in the oldest children (P < 0.05), while ApEn and Hurst exponents were lower (P < 0.05). Conclusion: Change in HRV is one of the characteristics of development in children.展开更多
To the Editor： Sevoflurane and desflurane are tile most common general anesthetics used in children. Previous study has shown that these agents can affect the electrocardiogram （ECG） markers,i^i leading to fatal ve...To the Editor： Sevoflurane and desflurane are tile most common general anesthetics used in children. Previous study has shown that these agents can affect the electrocardiogram （ECG） markers,i^i leading to fatal ventricular arrhythmia. The followings were identified as useful indices for predicting and estimating the occurrence of a fatal arrhythmia： the interval between the peak and the end of T wave （Tp-Te） the ratio of the Tp-Te interval to the QT interval （[Tp-Te/QT]）, and the JY interval （JT）, which is measured from the end of the QRS complex to Te.展开更多
文摘Background: The child’s central nervous system develops with aging, and heart rate variability (HRV), which is con-trolled by the brain, differs from that of adults. We investigated changes in HRV during sevoflurane anesthesia in children. Methods: One 138 children aged from 2 - 12 years without major underlying problems were enrolled. During maintenance with 2 - 2.5 vol% sevoflurane anesthesia, electrocardiographic data were obtained and power spectral analysis, approximate entropy (ApEn) or Hurst exponent were analyzed and compared in three groups (age 2 - 5 years, 6 - 9 and 10 - 12 years of age). Results: The RR interval increased with aging, but low-frequency powers did not. High- frequency power was greater in the oldest children (P < 0.05), while ApEn and Hurst exponents were lower (P < 0.05). Conclusion: Change in HRV is one of the characteristics of development in children.
文摘To the Editor： Sevoflurane and desflurane are tile most common general anesthetics used in children. Previous study has shown that these agents can affect the electrocardiogram （ECG） markers,i^i leading to fatal ventricular arrhythmia. The followings were identified as useful indices for predicting and estimating the occurrence of a fatal arrhythmia： the interval between the peak and the end of T wave （Tp-Te） the ratio of the Tp-Te interval to the QT interval （[Tp-Te/QT]）, and the JY interval （JT）, which is measured from the end of the QRS complex to Te.
