Phyllis K Stein

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..Evidence also suggests that HRV collected during a PSG can be used in risk stratification models, at least for older adults. Caveats for accurate interpretation of HRV are also presented...

..We examined whether heart rate turbulence (HRT) and C-reactive protein (CRP) add to traditional risk factors for cardiac mortality in older adults at low, intermediate, and high risk...

..It is also associated with sleep disturbances and with elevated HR, which may be more pronounced at night. Resting and 24-hour HR have been found to predict mortality in patient and community samples...

..e., abnormal turbulence) to premature ventricular contractions (VPCs), and b) whether abnormal HR turbulence accounts for the effect of depression on increased mortality after AMI...

..Purpose: to characterise the association between age, ageing and heart rate variability (HRV) in older individuals, 585 adults age >65 years with two 24-h Holter recordings in the Cardiovascular Health Study were studied...

..Quantification of ultradian patterns of HRV is feasible and could provide new insights into autonomic physiology...

..Cardiac autonomic nervous system (ANS) dysregulation, proinflammatory processes, and procoagulant processes have been suggested as possible explanations...

..Depression is associated with an increased risk for mortality after acute myocardial infarction (MI). The purpose of this study was to determine whether low heart rate variability (HRV) mediates the effect of depression on mortality...

..We have developed a method for capturing these rhythms during sleep and have now applied it to 24-hour recordings...

..Novel HRV Predicts CV Mortality in the Elderly...

..47; 95% confidence interval, 0.39-0.58) were significantly associated with decreased mortality compared with ESR. Quantification of ESR may identify more vulnerable patients or help monitor the effects of pharmacologic treatment...

..Traditional HRV predicts mortality in patients with a range of times post-MI, but the association of nonlinear HRV and outcome in this population is unknown...

..Low intake of omega-3 FAs is associated with depression and with low HRV, and all three are associated with an increased risk of death in patients with CHD...

..TWA can be measured from ambulatory ECGs (AECGs) using modified moving average (MMA) method. Whether MMA TWA from AECGs predicts SCD in post-MI patients with left ventricular dysfunction (LVD) is unknown...

..To determine the prevalence and effect on traditional heart rate variability (HRV) indices of abnormal HRV patterns in the elderly...

..Sudden cardiac death (SCD) can be the first manifestation of cardiovascular disease. Development of screening methods for higher/lower risk is critical...

..To explore the relationship between (1) insulin resistance and inflammation factors with (2) higher heart rate (HR) and lower heart rate variability (HRV) in normoglycemic older adults...

..Decreased heart rate variability (HRV) is often assumed to be associated with mortality in all patients after myocardial infarction (MI), independent of clinical factors or time after MI...

..Demonstration of a circadian rhythm in two parameters of heart rate turbulence--turbulence onset (TO) and turbulence slope (TS)--has been difficult...

..Obstructive sleep apnea/hypopnea syndrome (OSAHS) is frequently comorbid with depression and is also a risk factor for cardiac events. Undetected OSAHS could help explain the increased risk associated with depression...

..g., exercise or drugs. RR interval variability is useful for assessing risk of cardiovascular death or arrhythmic events, especially when combined with other tests, e.g., left ventricular ejection fraction or ventricular arrhythmias...

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..037) independently predicted cardiovascular death. In conclusion, HRT is an independent predictor of cardiovascular death in a high-risk population after AMI, with a possibly higher optimal cutpoint for HRT slope than previously reported...

..The noncompleter remained unchanged. Thus a remission in PTSD symptoms following CBT accompanied a reduction in the HRV indicator of sympathetic predominance in REM sleep...

..To investigate autonomic abnormalities in male and female fibromyalgia (FM) and Gulf War illness (GWI) patients by comparing heart rate variability (HRV) with that of age- and sex-matched healthy controls...

..To determine if depression contributes to incident heart disease after accounting for genetic, behavioral, and medical factors associated with both conditions...

..Diabetes (D) and heart failure (HF) are associated with abnormal heart rate variability (HRV). It is unclear whether the HRV effect of having both is cumulative...

..Patients with systolic heart failure (SHF) often have concomitant diastolic dysfunction (DD). SHF is associated with decreased heart rate variability (HRV), but the impact of degree of DD on HRV in SHF is unclear...

..However, graphical power spectral plots can provide additional information about whether the HRV pattern is normal and can also identify some patients with obstructive sleep apnea...

..These characteristics of the cardiovascular system require us keep in mind the "time" factor any time we analyze electrophysiological results and make clinical decisions...

..The purpose of this study was to determine the effects of dexmedetomidine on systemic and cardiac autonomic reflex responses during rest and during thermal stress...

..The reviewers' opinion is that real-time analysis of HRV in critical illness may provide caregivers with additional information about patient status, effects of intervention, and prognosis...

..The purpose of this study was to determine whether depression is associated with increased QT variability in patients recovering from myocardial infarction...

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