Filters

Search for: [Abstract = "ssessment, EKG and chest X\-ray, transthoracic echocardiography, tilt test and 24\-hour EKG Holter monitoring. In the tilt test, the type of vasovagal reaction and the time of its occurrence were assessed. EKG Holter monitoring allowed for analyzing the following parameters of temporal and frequential HRV analysis\: 1. temporal domain\: standard deviation of normal RR intervals \(SDNN\), mean of the standard deviations of RR intervals for all 5\-minute segments of the entire recording \(SDNNI\), standard deviation of all 5\-minute mean normal RR intervals \(SDANN\), root mean square difference among successive RR normal intervals \(RMSSD\) and percentage of successive RR interval differences > 50 ms \(pNN50\), 2. frequential domain\: low frequency \(LF\), high frequency \(HF\) and LF\/HF ratio. The results of TT and the values of HRV parameters were compared between Groups 1, 2 and 3. Groups 1 and 2 were additionally subdivided into subgroups with a positive and negative result of the tilt test \[TT\(\+\) and TT\(\-\)\]. In the thus formed subgroups, correlations were also performed between the reaction to TT and the investigated HRV parameters. p < 0.05 was accepted as denoting statistical significance. Results. Tilt test\: In Group 1 \(children with NS\), TT was positive in 41 \(58%\) and negative in 30 \(42%\) subjects. Vasovagal reaction of the MX type was the most commonly observed \(24 children\), while"]

Number of results: 1

items per page

This page uses 'cookies'. More information