Vagally Mediated Heart Rate Variability: A Risk Factor for Hypertension

Objective. To explore the autonomic nerve rhythm and the correlation between palpitations below the heart (PBTH) and autonomic nerve function in patients with PBTH based on heart rate variability (HRV). Methods. The outpatients or ward patients of Wenzhou Hospital of Traditional Chinese Medicine were collected and divided into two groups: the PBTH group and the normal group. The HRV of each group was detected. Single-factor statistical methods, Spearman correlation analysis, and logistic regression were used to describe and analyze the rhythm and characteristics of autonomic nerves in patients with PBTH and the correlation between PBTH and autonomic nerve function. Results. (1) In the comparison of HRV in different time periods in the same group, the SDNN, RMSSD, pNN50, TP, and HF in the PBTH group at night were significantly higher than those in the daytime ( P < 0.01 ), while the LF/HF ratio was significantly lower than that in the daytime ( P < 0.01 ). (2) In the comparison of HRV between the two groups in the same time period, the RMSSD and pNN50 of the PBTH group during the daytime period were significantly higher than those of the normal control group ( P < 0.05 ), and the LF/HF was significantly lower than that of the normal group ( P < 0.05 ). (3) In the Spearman correlation analysis, PBTH was significantly correlated with RMSSD, pNN50, and LF/HF ratio in the daytime period, with correlation coefficients of 0.424, 0.462, and −0.524, respectively ( P < 0.05 ). (4) Logistic regression analysis showed that the decrease of LF/HF ratio during the daytime period was an independent risk factor for PBTH in TCM (OR = 0.474, 95% CI: 0.230–0.977, P < 0.05 ). Conclusions. The changes in parasympathetic nerve function in patients with PBTH have a circadian rhythm, which is characterized by increased activity during the nighttime. At the same time, the autonomic nerve activity of people with PBTH during the daytime is unbalanced, and the decrease of LF/HF ratio during the day is an independent high risk factor for PBTH.

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Heart Rate Variability And Body Composition As A Hypoxia Risk Factor In Military Pilots

Medicine & Science in Sports & Exercise ◽

10.1249/01.mss.0000536178.75936.18 ◽

2018 ◽

Vol 50 (5S) ◽

pp. 333-334

Author(s):

JUAN MIGUEL CASTRO HERRERA

Keyword(s):

Heart Rate ◽

Heart Rate Variability ◽

Body Composition ◽

Risk Factor ◽

Military Pilots

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High-Frequency Heart Rate Variability and Emotion-Driven Impulse Control Difficulties During Adolescence: Examining Experienced and Expressed Negative Emotion as Moderators

The Journal of Early Adolescence ◽

10.1177/0272431620983453 ◽

2020 ◽

pp. 027243162098345

Author(s):

Stefanie F. Gonçalves ◽

Tara M. Chaplin ◽

Roberto López ◽

Irene M. Regalario ◽

Claire E. Niehaus ◽

...

Keyword(s):

Heart Rate ◽

Heart Rate Variability ◽

Risk Factor ◽

Emotional Expression ◽

High Frequency ◽

Impulse Control ◽

Negative Emotion ◽

Conflict Task ◽

Emotional Context ◽

One Year

Emotion-driven impulse control difficulties are associated with negative psychological outcomes. Extant research suggests that high-frequency heart rate variability (HF-HRV) may be indicative of emotion-driven impulse control difficulties and potentially moderated by negative emotion. In the current study, 248 eleven- to 14-year-olds and their parent engaged in a negatively emotionally arousing conflict task at Time 1. Adolescents’ HF-HRV and negative emotional expression and experience were assessed before, during, and/or after the task. Adolescents reported on their levels of emotion-driven impulse control difficulties at Time 1 and one year later. Results revealed that higher levels of HF-HRV reactivity (i.e., higher HF-HRV augmentation) predicted higher levels of emotion-driven impulse control difficulties 1 year later among adolescents who experienced higher negative emotion. These findings suggest that negative emotional context should be considered when examining HF-HRV reactivity as a risk factor for emotion-driven impulse control difficulties and associated outcomes.

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Body mass index mortality paradox in chronic kidney disease patients with suspected cardiac chest pain.

JCSM Clinical Reports ◽

10.17987/jcsm-cr.v2i1.10 ◽

2017 ◽

Vol 2 (1) ◽

Author(s):

Jamie Michael O'Driscoll ◽

Adrian Slee ◽

Rajan Sharma

Keyword(s):

Body Mass Index ◽

Chronic Kidney Disease ◽

Heart Rate ◽

Heart Rate Variability ◽

Risk Factor ◽

Kidney Disease ◽

Body Mass ◽

All Cause Mortality ◽

The Relationship

Background: Chronic kidney disease (CKD) is a silent clinical condition associated with adverse comorbidity and high cardiovascular disease (CVD) risk. An inverse relationship with body mass index (BMI) and mortality has been demonstrated in hemodialysis patients. However, it is unclear if this risk-factor paradox is evident in non-dialysis CKD patients. The aims of this study were to explore the relationship between, nutritional status, markers of inflammation, autonomic and cardiac function with BMI. Longitudinal follow-up explored the relationship between BMI and all-cause mortality. Methods: 211-consecutive CKD patients referred for dobutamine stress echocardiography to detect or exclude myocardial ischemia were recruited. BMI, albumin, C-reactive protein (CRP) and haemoglobin (Hb) were recorded as markers of nutritional and inflammatory status. Left ventricular ejection fraction (LVEF) and heart rate variability (HRV) as an indicator of cardiac function was recorded. All subjects were followed prospectively until November 2014 and study end-point was all-cause mortality. Results: BMI was inversely associated with CKD status. After covariate adjustment, this association remained. During a mean follow-up period of 3.3±0.9 years there were 35 deaths (17%). BMI was inversely associated with all-cause mortality (HR 0.81, 95% CI 0.71-0.9). Other important independent predictors of mortality were heart rate variability (HR 0.98, 95% CI 0.97-0.99), myocardial ischemia (HR 1.37, 95% CI 1.17-1.81), and albumin (HR 0.86, 95% CI 0.81-0.92). Conclusions: The presence of a body mass index paradox exists in non-dialysis CKD patients. This risk-factor paradox was an independent predictor of all-cause mortality and may have significant clinical implications relevant to screening, assessment and treatment and requires further study.

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Distress and Retaliatory Aggression in Response to Witnessing Intergroup Exclusion are Greater on Higher Levels of Collective Narcissism

10.31234/osf.io/qsz3t ◽

2021 ◽

Author(s):

Adrian Hase ◽

Agnieszka Golec

Keyword(s):

Heart Rate ◽

Heart Rate Variability ◽

Risk Factor ◽

Psychosocial Problems ◽

Effective Strategy ◽

Negative Consequences ◽

Taylor Aggression Paradigm ◽

The Face ◽

Group Members ◽

Behavioral Aggression

The negative consequences of personal exclusion have been demonstrated by multiple studies. Less is known about the consequences of witnessing one’s own group being excluded by other groups, although studies suggest exclusion can be experienced vicariously and negatively affects members of the excluded group. Results of the present lab-based experiment (N= 153), indicate, in line with our predictions, that witnessing intergroup exclusion (manipulated by an adapted intergroup Cyberball paradigm) produced a sense of personal exclusion. It also increased self-reported distress and behavioral aggression measured in the Taylor Aggression Paradigm), especially among participants high on collective narcissism: a belief that the exaggerated greatness of the in-group is not sufficiently appreciated by others. Contrary to expectations, a short mindful decentration intervention (instructing participants to observe thoughts and emotions as transient mental products without engaging with them) delivered while participants were witnessing intergroup exclusion (versus inclusion) produced changes in heart rate variability reactivity indicative of emotional arousal especially among collective narcissists. We concluded that collective narcissism is associated with distress in the face of intergroup exclusion, aggressive retaliation, and in consequence it is a risk-factor predisposing group members to stress-related health and psychosocial problems. Furthermore, a mindful decentration, despite being an effective strategy to reduce maladaptive stress in most people, may be counterproductive in addressing high collective narcissists’ responses to threat to the in-group’s image.

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