Zobrazeno 1 - 10
of 54
pro vyhledávání: '"A.W. Frey"'
Publikováno v:
Proceedings of Computers in Cardiology Conference.
Spectral analysis of heart rare variability (HRV) becomes a promising tool in detecting patients with high risk for sudden death. The calculations are based on the exact evaluation of the QRS distances from beat to beat. Phase locked loop technique s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4aa1828805d0c9aa1f9671d1472fe873
https://doi.org/10.1109/cic.1993.378407
https://doi.org/10.1109/cic.1993.378407
Publikováno v:
Proceedings of Computers in Cardiology Conference.
Power spectral analysis of heart rate variability was used to study the effects of the calcium channel blocker diltiazem and the /spl beta/-receptor blocker metoprolol on the parasympathetic nervous system. The area under the curve of the high freque
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9d0f3534cc8615a01329f14c0276fa95
https://doi.org/10.1109/cic.1993.378441
https://doi.org/10.1109/cic.1993.378441
Publikováno v:
Computers in Cardiology 1994.
Repolarisation of the left ventricle and blood pressure are mainly influenced by sympathetic tone. The authors investigated RR-, RT-intervals and systolic blood pressure variability by spectral analysis in 18 healthy volunteers in supine and head-up
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::92bafc1890604e5b9c72336c1278a85b
https://doi.org/10.1109/cic.1994.470127
https://doi.org/10.1109/cic.1994.470127
Publikováno v:
Computers in Cardiology 1994.
Four different spectral methods for assessing the respiratory sinus arrhythmia (=RSA) are investigated: the spectrum of the tachogram, of the point process and of two subcases of the step-like interpolation algorithm. For a comparison the integral pu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7f627a1f6aad27a15f8a3b438956e34d
https://doi.org/10.1109/cic.1994.470252
https://doi.org/10.1109/cic.1994.470252
Publikováno v:
Computers in Cardiology 1994.
Power spectral analysis of heart rare variability (HRV) of 12 healthy volunteers was assessed during ventilation and in rate controlled (active) breathing at three different breathing frequencies (8/min, 12/min and 18/min). It can be shown that passi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0c0b371bd839c56af7134d08593da6a7
https://doi.org/10.1109/cic.1994.470076
https://doi.org/10.1109/cic.1994.470076
Hypertensive patients with coronary artery disease and an abnormal pattern of heart rate variability
Publikováno v:
Computers in Cardiology 1994.
Heart rate variability (HRV) was investigated in 17 normotensive (N) and 8 hypertensive (H) patients with stable CAD and good ventricular function. Recordings were made on the evening before and after induction of anesthesia for CABG surgery each in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7341b284925ebd07bd92a1ae8c3eacb2
https://doi.org/10.1109/cic.1994.470167
https://doi.org/10.1109/cic.1994.470167
Publikováno v:
Computers in Cardiology 1994.
In thirteen patients with coronary artery bypass graft surgery, heart rate variability (HRV) was investigated shortly after arrival in an intensive care unit. Recordings were made under 3 different conditions: sinus rhythm (SR), and fixed rate atrial
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ab8295d23d74215026e1ca907860de0f
https://doi.org/10.1109/cic.1994.470186
https://doi.org/10.1109/cic.1994.470186
Publikováno v:
[1991] Proceedings Computers in Cardiology.
Short-acting vasodilating drugs like nitroglycerin sublingual (NTG) change sympathico-vagal balance as long as central systolic blood pressure is lowered. To calculate power spectral density (PSD) estimation of heart rate variability (HRV) stationary
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b44946d32d1146220173118418ffb6b
https://doi.org/10.1109/cic.1991.169134
https://doi.org/10.1109/cic.1991.169134
Publikováno v:
Computers in Cardiology 1995.
Variability of arterial blood pressure (BPV) and heart rate (HRV) were investigated in 26 patients shortly after CABG surgery under two conditions: During the first recording patients had sinus rhythm of 65 to 88 beats per minute; after that the atri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5f791151ee43d26c05953411383ffda1
https://doi.org/10.1109/cic.1995.482631
https://doi.org/10.1109/cic.1995.482631
Publikováno v:
Computers in Cardiology 1995.
Heart rate (HRV) and blood pressure (BPV) variability were investigated in 25 patients undergoing CABG surgery. At four stages, 5-minutes of on-line data were used to calculate spectral power in high (0.15 to 0.4 Hz), low (0.04 to 0.15 Hz), and very
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d94c294c25ae99a53b201f4cd914a323
https://doi.org/10.1109/cic.1995.482681
https://doi.org/10.1109/cic.1995.482681