[Autoregressive analysis of variability in heart rate and blood pressure in asthmatic children--difference of severity].

Changes in ECG R-R intervals and blood pressure (lye and stand) were assessed by the autoregressive power spectral analysis method in 40 asthmatic children (age range: 2-16 years, mean +/- SD: 9.4 +/- 4.1 years). Significantly lower low frequency (LF: < or = 0.1 cycle/beat) power and high frequency (HF: 0.1-0.5 cycle/beat) power of R-R intervals were… CONTINUE READING