Abstract
ECG and physical activity (recorded with motion detectors) were continuously monitored during 23 hours in 31 male cardiac patients (81% with myocardial infarction). According to the occurrence of ventricular arrhythmias (VA) or ischemic episodes (IE), each patient was grouped in one of three diagnostic categories: neither VA nor IE, VA with or without IE, and IE only. Analysis of the ECG parameters was done beat-by-beat and averaged on a 1-min basis. Results were derived from the 2-hour means between 2 p.m. and 12 p.m. MANOVA revealed significant group differences for heart rate variability (greater for the group with VA), R-wave amplitude (higher for the group with IE), and P-wave amplitude (higher for the group with VA). Significant time effects were observed for all variables except QRS- and P-wave durations. As may be expected, physical activity and heart rate were lower at night. Heart rate variability, PQ-interval, PR-segment, QT-interval, ST-segment, and T-wave duration increased during the night. R-wave amplitude also increased but the relative P- and T-wave amplitudes decreased. The corrected QT-interval, QTc, was shorter at night and the ST-segment, J + 60-point, S-wave, and J-point amplitudes were less negative. Grou...Continue Reading
References
Sep 4, 1976·Lancet·J M ClarkeG R Venning
May 1, 1978·Circulation·P E BonorisM H Ellestad
Jun 1, 1978·Circulation·P J Schwartz, S Wolf
Apr 1, 1978·The American Journal of Cardiology·R M Doroghazi, R Childers
May 1, 1978·The American Journal of Cardiology·P E BonorisM H Ellestad
Jan 1, 1978·Acta Medica Scandinavica·S AhnveM Shoaleh-var
May 26, 1977·The American Journal of Cardiology·B LownS H Rabinowitz
Apr 1, 1975·Circulation·A C GiardinaM A Engle
Mar 1, 1986·British Heart Journal·K Orth-GomérB Söderholm
Dec 1, 1988·European Heart Journal·M MyrtekV Höppner
Mar 1, 1988·European Heart Journal·M Moser
Jun 1, 1987·The American Journal of Cardiology·J J GlazierA Maseri
Apr 1, 1985·International Journal of Psychophysiology : Official Journal of the International Organization of Psychophysiology·T H Hijzen, J L Slangen
Feb 1, 1984·Biological Psychology·T H HijzenL Bouter
Aug 1, 1984·Journal of the American College of Cardiology·A GallinoA Maseri
Oct 1, 1983·American Heart Journal·M J RosenbergP Denes
Nov 1, 1983·Psychophysiology·P J Schwartz, T Weiss
Nov 1, 1983·Psychophysiology·R J Heslegrave, J J Furedy
Mar 1, 1984·Journal of the American College of Cardiology·J A HopkirkJ Fischer
May 1, 1984·Psychophysiology·D ZemaityteE Sokolov
May 1, 1984·Psychophysiology·H ScherR J Heslegrave
Sep 1, 1983·Japanese Circulation Journal·T SadaM Takeuchi
Aug 1, 1982·Clinical Physiology·J H AtterhögP Hjemdahl
Nov 1, 1982·Biological Psychology·D B PenzienH A Beazel
Jul 1, 1982·American Heart Journal·F H MesserliE D Frohlich
Dec 1, 1981·The American Journal of Cardiology·J CincaJ Rius
Oct 1, 1980·Clinical Cardiology·S AhnveA Sjögren
Citations
Feb 5, 1996·Biological Psychology·M MyrtekW Müller
Jul 1, 1994·Ergonomics·M MyrtekW Müller
Jun 17, 1999·Japanese Heart Journal·H J KochW Banzer
Feb 20, 2007·Srpski arhiv za celokupno lekarstvo·Branislav MilovanovićSlavica Nikolić
May 3, 2001·Annals of Noninvasive Electrocardiology : the Official Journal of the International Society for Holter and Noninvasive Electrocardiology, Inc·P E DilaverisM Malik