Outcome of patients with normal and decreased heart rate variability after coronary artery bypass grafting surgery

Lakušić, Nenad; Mahović, Darija; Sonicki, Zdenko; Slivnjak, Valentina; Baborski, Franjo

doi:10.1016/j.ijcard.2012.04.040

Cited by 33 publications

(30 citation statements)

References 18 publications

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“…Preoperative values of linear HRV parameters in our patient population were similar to values of individuals with multivessel coronary artery disease (CAD) reported in earlier papers [1,27,29]. In the present work, all calculated timeand frequency domain indices showed a significant postoperative decline, indicating a strong tendency toward less variability and a predominance of sympathetic regulation after off-pump CABG.…”

Section: Discussionsupporting

confidence: 89%

“…A substantial number of studies have reported on depressed time-and frequency-domain linear HRV parameters in patients with various cardiac pathologies, suggesting sympathetic enhancement with or without a concomitant vagal withdrawal in these individuals and robustly identifying subgroups of patients with highest risk for different adverse effects [1][2][3][4][5][6][26][27][28][29][30]]. In the current study, well established time-and frequency-domain linear Table 2.…”

Section: Discussionmentioning

confidence: 62%

“…In the present work, all calculated timeand frequency domain indices showed a significant postoperative decline, indicating a strong tendency toward less variability and a predominance of sympathetic regulation after off-pump CABG. However, since human heartbeat is essentially nonstationary and highly complex the nonlinear HRV techniques derived from mathematics of complex dynamics fractal geometry have been proven to be superior in clarifying changes of autonomic activity in coronary artery disease, rhythm disturbances, heart failure or following myocardial infarction and in independently predicting benign and malignant arrhythmias, sudden cardiac death and mortality after myocardial infarction [4,[26][27][28][29][30]. Furthermore, applying selected nonlinear HRV techniques in our earlier studies we have confirmed that a profound derangement of sympathovagal balance occurs not only as a result of underlying disease but also as a consequence of a surgical procedure be it with or without the utilization of extracorporeal circulation [14,15].…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Multifractality in heartbeat dynamics in patients undergoing beating-heart myocardial revascularization

Kšela

Avbelj

Kališnik

2015

Computers in Biology and Medicine

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Section: Discussionsupporting

confidence: 89%

Section: Discussionmentioning

confidence: 62%

Section: Discussionmentioning

confidence: 99%

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Multifractality in heartbeat dynamics in patients undergoing beating-heart myocardial revascularization

Kšela

Avbelj

Kališnik

2015

Computers in Biology and Medicine

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“…Nonetheless, the present study calls attention to potential novel pathophysiological pathways that may contribute to arterial aging [23] and may promote CV disease onset and progression [24,25]. Larger controlled studies are needed to provide more detailed insight into the role of HRV and PP amplification, an index of arterial aging, and to determine which pathways are differentially activated in lean and obese subjects.…”

Section: Discussionmentioning

confidence: 99%

Lower Heart Rate Variability Is Associated with Lower Pulse Pressure Amplification: Role of Obesity

N¹,

Tesauro²,

Mascali³

et al. 2017

Pulse

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Background: Heart rate variability (HRV), pulse pressure amplification, and obesity represent risk factors for cardiovascular events. The aims of the present study are (1) to explore the impact of HRV on pulse pressure amplification and (2) to investigate whether the association between HRV and pulse pressure amplification differs in obese and lean subjects. Methods: A total of 342 patients (age 61 ± 11 years) were enrolled. HRV was analyzed concerning both the frequency and time domain as well as concerning the HRV triangular index. Pulse pressure amplification was estimated as the ratio between brachial and carotid pulse pressure, the latter measured with SphygmoCor. Results: Time domain HRV indices were directly correlated with pulse pressure amplification (the lower the HRV indices, the lower the pulse pressure amplification). This association was stronger in obese than in lean subjects after controlling for age and sex. Conclusion: Larger controlled studies are needed to provide a more detailed insight into the relation between HRV and pulse pressure amplification and to determine which pathways are differentially activated in lean and obese subjects.

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“…A decrease in HRV has been shown to correlate with an increase in mortality, for example after myocardial infarcts [10][11][12] , after bypass operations 13 , or in connection with cardiac insufficiency 14 .…”

Section: Introductionmentioning

confidence: 99%

Factors influencing heart rate variability

Sammito¹,

Böckelmann²

2016

ICFJ

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The measurement and analysis of heart rate variability (HRV), which is based on the variation between consecutive NN intervals, has become an established procedure over the past two decades. A decrease in HRV has been shown to correlate with an increase in mortality. HRV is influenced by a number of physiological factors such as various diseases. Awareness of these mediators or confounders is of great importance in the analysis and assessment of HRV both in scientific studies and in clinical practice. This document, which is based on a selective survey of references and supplemented by information from national and international guidelines, presents the main endogenous, exogenous and constitutional factors. A decrease in HRV has been observed not only in connection with non-influenceable physiological factors such as age, gender and ethnic origin, but also in conjunction with a large number of acute and chronic diseases. Numerous lifestyle factors have both a positive and a negative influence on HRV. There are also physical influences that affect HRV. They must on no account be disregarded. Although the list of the factors is long and not all of them have yet been fully studied, awareness of them is of crucial importance in the measurement of HRV (both under laboratory conditions and during medical practice), its analysis and its assessment. More research also needs to be carried out to close knowledge gaps.

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Outcome of patients with normal and decreased heart rate variability after coronary artery bypass grafting surgery

Cited by 33 publications

References 18 publications

Multifractality in heartbeat dynamics in patients undergoing beating-heart myocardial revascularization

Multifractality in heartbeat dynamics in patients undergoing beating-heart myocardial revascularization

Lower Heart Rate Variability Is Associated with Lower Pulse Pressure Amplification: Role of Obesity

Factors influencing heart rate variability

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