Koch, Horst Josef and Raschka, Christoph (1999) Diurnal variations of intervals and R and T wave amplitudes in the ECG of healthy male volunteers. HERZ KREISLAUF, 31 (11). pp. 438-442. ISSN 0046-7324,
Full text not available from this repository.Abstract
12 lead standard ECGs of 35 healthy male volunteers (age: 19-44 years), recorded from 08.00 a.m. up to 01.00 a.m,, were analysed retrospectively in order to investigate primarily the diurnal changes of ECG interval durations and R wave as well as T wave amplitudes. Friedman ANOVA revealed significant variations for all ECG parameters. Especially T wave amplitudes showed marked alterations with percent changes up to 40%. Transient maxims of median T wave amplitudes and QTc interval duration were found at 12.00 a.m. and 14.00 p.m., respectively R wave amplitudes and PQ duration revealed lower values in the afternoon. Periodicity of 12 hours (T-Wave amplitude) and between 5 and 8 hours (QTc interval, T and R wave) were confirmed by spectral analysis and cosinor model based on population data.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ; ECG; diurnal variation; ECG intervals; R and T wave amplitudes; time series analysis |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Psychiatrie und Psychotherapie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 13 Dec 2022 09:04 |
| Last Modified: | 13 Dec 2022 09:04 |
| URI: | https://pred.uni-regensburg.de/id/eprint/48878 |
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