Cardiac influences of TTN, such as ventricular dysfunction, increased pulmonary vascular, and central venous pressure, are described [ 1, 14].
Exploration of this change in LF/HF ratio following inflammation showed that the effect was mediated predominantly by an increase in low frequency cardiac influences (Group × time interaction: F 1,18) = 4.32, p = 0.05) with a smaller(non-significant) reduction in high frequency (parasympathetic) components observed (Group × time interaction: F 1,18) = 1.80, p = 0.19).
Having established negative cardiac influences of obesity with insulin-resistance, compared with lean insulin-sensitive rats (du Toit et al., 2005; du Toit et al., 2008; Maarman et al., 2012), we here examine the impact of dietary obesity on myocardial I-R tolerance in older rats exhibiting common age-related insulin-insensitivity.
In contrast, RMSSD was not significantly associated with respiratory frequency in either group, suggesting it may serve as a more accurate measure of cardiac vagal influence in samples that include both healthy subjects and those who suffer from psychopathology.
Several studies reported, in SAHS patients, increased cardiac sympathic influence and altered link between cardiac vagal activity and delta sleep EEG.
The etiology of heart failure and the cardiac rhythm influence the acute cardiac response to CPAP.
HFnu is also considered as a better reflection of the relative cardiac vagal influence than absolute HF power [ 30, 34, 35].
This leads to the question, if the duration of no-flow (time without chest compressions) after cardiac arrest influences the level of coagulation activation and subsequent fibrinolysis during CPR.
The scales and coherence of the vortex structures can be examined, and their existence can ultimately be linked to the operation of a number of cardiac structures influencing flow in the heart.
