Analysis of heart rate variability in patients with primary and secondary invasion with pinworms before and after a course of specific therapy

Abstract Background Hydrotherapeutic applications to the head and spine have shown to improve cardiovascular and autonomic functions. There is lack of study reporting the effect of either neutral spinal bath (NSB) or neutral spinal spray (NSS). Hence, the present study was conducted to evaluate and compare the effects of both NSB and NSS in healthy volunteers. Methods Thirty healthy subjects were recruited and randomized into either neutral spinal bath group (NSBG) or neutral spinal spray group (NSSG). A single session of NSB, NSS was given for 15 min to the NSBG and NSSG, respectively. Assessments were taken before and after the interventions. Results Results of this study showed a significant reduction in low-frequency (LF) to high-frequency (HF) (LF/HF) ratio of heart rate variability (HRV) spectrum in NSBG compared with NSSG (p=0.026). Within-group analysis of both NSBG and NSSG showed a significant increase in the mean of the intervals between adjacent QRS complexes or the instantaneous heart rate (HR) (RRI) (p=0.002; p=0.009, respectively), along with a significant reduction in HR (p=0.002; p=0.004, respectively). But, a significant reduction in systolic blood pressure (SBP) (p=0.037) and pulse pressure (PP) (p=0.017) was observed in NSSG, while a significant reduction in diastolic blood pressure (DBP) (p=0.008), mean arterial blood pressure (MAP) (p=0.008) and LF/HF ratio (p=0.041) was observed in NSBG. Conclusion Results of the study suggest that 15 min of both NSB and NSS might be effective in reducing HR and improving HRV. However, NSS is particularly effective in reducing SBP and PP, while NSB is particularly effective in reducing DBP and MAP along with improving sympathovagal balance in healthy volunteers.

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Quantitative assessment of the relationship between behavioral and autonomic dynamics during propofol-induced unconsciousness

10.1101/2020.11.03.367607 ◽

2020 ◽

Author(s):

Sandya Subramanian ◽

Patrick L. Purdon ◽

Riccardo Barbieri ◽

Emery N. Brown

Keyword(s):

Heart Rate ◽

Heart Rate Variability ◽

Prediction Models ◽

Electrodermal Activity ◽

Strong Relationship ◽

Pulse Amplitude ◽

Physiological Data ◽

Statistical Tool ◽

Autonomic Changes ◽

Before And After

ABSTRACTDuring general anesthesia, both behavioral and autonomic changes are caused by the administration of anesthetics such as propofol. Propofol produces unconsciousness by creating highly structured oscillations in brain circuits. The anesthetic also has autonomic effects due to its actions as a vasodilator and myocardial depressant. Understanding how autonomic dynamics change in relation to propofol-induced unconsciousness is an important scientific and clinical question since anesthesiologists often infer changes in level of unconsciousness from changes in autonomic dynamics. Therefore, we present a framework combining physiology-based statistical models that have been developed specifically for heart rate variability and electrodermal activity with a robust statistical tool to compare behavioral and multimodal autonomic changes before, during, and after propofol-induced unconsciousness. We tested this framework on physiological data recorded from nine healthy volunteers during computer-controlled administration of propofol. We studied how autonomic dynamics related to behavioral markers of unconsciousness: 1) overall, 2) during the transitions of loss and recovery of consciousness, and 3) before and after anesthesia as a whole. Our results show a strong relationship between behavioral state of consciousness and autonomic dynamics. All of our prediction models showed areas under the curve greater than 0.75 despite the presence of non-monotonic relationships among the variables during the transition periods. Our analysis highlighted the specific roles played by fast versus slow changes, parasympathetic vs sympathetic activity, heart rate variability vs electrodermal activity, and even pulse rate vs pulse amplitude information within electrodermal activity. Further advancement upon this work can quantify the complex and subject-specific relationship between behavioral changes and autonomic dynamics before, during, and after anesthesia. However, this work demonstrates the potential of a multimodal, physiologically-informed, statistical approach to characterize autonomic dynamics.

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Effect of sleep restriction on orthostatic cardiovascular control in humans

Journal of Applied Physiology ◽

10.1152/jappl.2000.88.3.966 ◽

2000 ◽

Vol 88 (3) ◽

pp. 966-972 ◽

Cited By ~ 30

Author(s):

N. K. Muenter ◽

D. E. Watenpaugh ◽

W. L. Wasmund ◽

S. L. Wasmund ◽

S. A. Maxwell ◽

...

Keyword(s):

Heart Rate ◽

Heart Rate Variability ◽

Lower Body Negative Pressure ◽

Systolic Pressure ◽

Cardiovascular Responses ◽

Sleep Restriction ◽

Orthostatic Tolerance ◽

Arterial Baroreflex ◽

Finger Arterial Pressure ◽

Before And After

We hypothesized that sleep restriction (4 consecutive nights, 4 h sleep/night) attenuates orthostatic tolerance. The effect of sleep restriction on cardiovascular responses to simulated orthostasis, arterial baroreflex gain, and heart rate variability was evaluated in 10 healthy volunteers. Arterial baroreflex gain was determined from heart rate responses to nitroprusside-phenylephrine injections, and orthostatic tolerance was tested via lower body negative pressure (LBNP). A Finapres device measured finger arterial pressure. No difference in baroreflex function, heart rate variability, or LBNP tolerance was observed with sleep restriction ( P > 0.3). Systolic pressure was greater at −60 mmHg LBNP after sleep restriction than before sleep restriction (110 ± 6 and 124 ± 3 mmHg before and after sleep restriction, respectively, P = 0.038), whereas heart rate decreased (108 ± 8 and 99 ± 8 beats/min before and after sleep restriction, respectively, P = 0.028). These data demonstrate that sleep restriction produces subtle changes in cardiovascular responses to simulated orthostasis, but these changes do not compromise orthostatic tolerance.

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Heart Rate Variability before and after Knee Surgery in Amateur Soccer Players

Journal of Sport Rehabilitation ◽

10.1123/jsr.16.4.336 ◽

2007 ◽

Vol 16 (4) ◽

pp. 336-342

Author(s):

Nicolas Olivier ◽

Renaud Legrand ◽

Jacques Rogez ◽

FX Gamelin ◽

Serge Berthoin ◽

...

Keyword(s):

Heart Rate ◽

Heart Rate Variability ◽

Nervous System ◽

Autonomic Nervous System ◽

Knee Surgery ◽

Soccer Players ◽

Total Power ◽

Autonomic Nervous ◽

Hospitalization Period ◽

Before And After

Objective:To analyze the consequences on heart rate variability (HRV) of a hospitalization period due to surgery of the knee in sportsmen.Patients:Ten soccer players who had undergone knee surgery took part in this study.Design:HRV was measured before and after hospitalization within a 7-day interval.Results:After the hospitalization phase, heart rate at rest increased significantly (3 beats/minute). A significant decrease of 7% in the cardiac inter beat interval (R-R interval), P < 0.05 and a 66% decrease in total power spectral density: −66%, P < 0.05 were observed. The disturbance of the autonomic nervous system could be due to a variation in cardiac vagal activity resulting in a 64% decrease in the high frequencies (P < 0.05). This variation was not associated with a modification in normalized markers (LFn.u., HFn.u.) and LF/HF ratio (P > 0.05).Conclusion:In sportsmen, a hospitalization period led to an increase in resting heart rate and was associated with a disturbance of the autonomic nervous system.

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Cross Validation Of Heart Rate Variability Measurements Before And After Exercise

Medicine & Science in Sports & Exercise ◽

10.1249/00005768-200505001-02211 ◽

2005 ◽

Vol 37 (Supplement) ◽

pp. S425

Author(s):

Meike Buerklein ◽

Lutz Vogt ◽

Winfried Banzer

Keyword(s):

Heart Rate ◽

Heart Rate Variability ◽

Cross Validation ◽

Before And After

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Heart rate variability and dissociation in panic disorder

European Psychiatry ◽

10.1016/s0924-9338(11)71858-2 ◽

2011 ◽

Vol 26 (S2) ◽

pp. 147-147

Author(s):

T. Diveky ◽

D. Kamaradova ◽

A. Grambal ◽

K. Latalova ◽

J. Prasko ◽

...

Keyword(s):

Heart Rate ◽

Heart Rate Variability ◽

Panic Disorder ◽

Frequency Band ◽

High Frequency ◽

Power Spectra ◽

Low Frequency ◽

Very Low Frequency ◽

Significant Difference ◽

Before And After

The aim of our study is to measure very low frequency band (VLF), low frequency band (LF) and high frequency band (HF) components of R-R interval during orthostatic experiment in panic disorder patients before and after treatment.MethodsWe assessed heart rate variability in 19 patients with panic disorder before and after 6-weeks treatment with antidepressants combined with CBT and 18 healthy controls. They were regularly assessed on the CGI, BAI and BDI. Heart rate variability was assessed during 5 min standing, 5 min supine and 5 min standing positions before and after the treatment. Power spectra were computed using a fast Fourier transformation for very low frequency - VLF (0.0033 - 0.04 Hz), low-frequency - LF (0.04-0.15 Hz) and high frequency - HF (0.15-0.40 Hz) powers.Results19 panic disorder patients entered a 6-week open-label treatment study with combination of SSRI and cognitive behavioral therapy. A combination of CBT and pharmacotherapy proved to be the effective treatment of patients. They significantly improved in all rating scales. There were highly statistical significant differences between panic patients and control group in all components of power spectral analysis in 2nd and in two component of 3rd (LF and HF in standing) positions. There was also statistically significant difference between these two groups in LF/HF ratio in supine position (2nd). During therapy there was tendency to increasing values in all three positions in components of HRV power spectra, but there was only statistically significant increasing in HF1 component.Supported by project IGA MZ ČR NS 10301-3/2009

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Improvement of Circadian Rhythm of Heart Rate Variability by Eurythmy Therapy Training

Evidence-based Complementary and Alternative Medicine ◽

10.1155/2013/564340 ◽

2013 ◽

Vol 2013 ◽

pp. 1-9 ◽

Cited By ~ 12

Author(s):

Georg Seifert ◽

Jenny-Lena Kanitz ◽

Kim Pretzer ◽

Günter Henze ◽

Katharina Witt ◽

...

Keyword(s):

Heart Rate ◽

Heart Rate Variability ◽

Circadian Rhythm ◽

Negative Impact ◽

Vagal Activity ◽

Nonlinear Parameters ◽

Low Frequencies ◽

Before And After ◽

Time Domains

Background. Impairment of circadian rhythm is associated with various clinical problems. It not only has a negative impact on quality of life but can also be associated with a significantly poorer prognosis. Eurythmy therapy (EYT) is an anthroposophic movement therapy aimed at reducing fatigue symptoms and stress levels.Objective. This analysis of healthy subjects was conducted to examine whether the improvement in fatigue symptoms was accompanied by improvements in the circadian rhythm of heart rate variability (HRV).Design. Twenty-three women performed 10 hours of EYT over six weeks. Electrocardiograms (ECGs) were recorded before and after the EYT trial. HRV was quantified by parameters of the frequency and time domains and the nonlinear parameters of symbolic dynamics.Results. The day-night contrast with predominance of vagal activity at night becomes more pronounced after the EYT training, and with decreased Ultralow and very low frequencies, the HRV shows evidence of calmer sleep. During the night, the complexity of the HRV is significantly increased indicated by nonlinear parameters.Conclusion. The analysis of the circadian patterns of cardiophysiological parameters before and after EYT shows significant improvements in HRV in terms of greater day-night contrast caused by an increase of vagal activity and calmer and more complex HRV patterns during sleep.

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