Heart rate variability in children with acute rheumatic fever

2011 ◽  
Vol 22 (3) ◽  
pp. 285-292 ◽  
Author(s):  
Mehmet Karacan ◽  
Naci Ceviz ◽  
Haşim Olgun
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Rheumatic Fever ◽  
Frequency Domain ◽  
Acute Rheumatic Fever ◽  
Control Group ◽  
P Value ◽  
Acute Period ◽  
Systemic Inflammatory Disease ◽  
Pr Interval

AbstractObjectiveAcute rheumatic fever is a systemic inflammatory disease occurring after acute streptococcal tonsillopharyngitis. The PR prolongation in these patients is thought to be due to increased vagal activity. There has been no previous study investigating the autonomic balance in patients with acute rheumatic fever. In this study, we aimed to investigate the balance of the autonomic nervous system in children with acute rheumatic fever by analysis of heart rate variability.MethodsWe evaluated the heart rate variability parameters in 50 patients with acute rheumatic fever and 37 comparable control subjects. Both groups underwent 24-hour electrocardiography monitoring, and time- and frequency-domain heart rate variability parameters were calculated. A total of 39 patients (78%), with (n = 28) or without (n = 11) other major findings, had carditis, and the remaining 11 (22%) did not. The PR interval was found to be prolonged in 10 (20%) of the patients at the beginning.ResultsIn the study group, the time- and frequency-domain heart rate variability parameters showed a sympathetic dominance compared with the control group, with a p-value less than 0.05. When compared with the control group, the time- and frequency-domain heart rate variability parameters showed a significant sympathetic dominance in patients with both prolonged PR and normal PR intervals in the acute period, with a p-value less than 0.05. When compared with patients with normal PR interval, mean normalised low frequency and normalised high frequency parameters suggested a relatively lower sympathetic dominance in patients with prolonged PR interval, with a p-value less than 0.05.ConclusionOur results indicated that in the acute period of rheumatic fever, sympathetic dominance is apparent; in patients with prolonged PR interval, sympathetic dominance is relatively lower when compared with the patients with normal PR interval.

scholarly journals Assessment of serum Ischemia Modified Albumin (IMA) Levels in Acute Rheumatic Fever

2020 ◽  
Vol 5 (2) ◽  
pp. 222
Author(s):  
Indranil Dawn ◽  
Gouranga Biswas
Keyword(s):  
Oxidative Stress ◽  
Rheumatic Fever ◽  
Acute Rheumatic Fever ◽  
Control Group ◽  
P Value ◽  
Acute Phase Reactants ◽  
Ischemia Modified Albumin ◽  
Medical College ◽  
Reactive Protein ◽  
Cobalt Binding

Introduction : Rheumatic fever (RF) is an autoimmune, multiorgan inflammatory disease. The patients develop carditis (50-78%), arthritis (35-88%), chorea (2-19%), erythema marginatum (< 6%) and subcutaneous nodules (< 1-13%). Ischemia modified albumin or cobalt binding albumin is one of new biomarker for inflammation and oxidative stress. Various previous studies indicate that acute rheumatic fever is associated with oxidative stress and inflammation. In the present study, we examined IMA, CRP, ESR and albumin levels in acute rheumatic fever.Material and method: This case control study was conductedbetween April 2017 to March 2018 in pediatrics department of Malda Medical College and Hospital. Study group composed of 42 children aged 5-18 years suffering from acute rheumatic fever diagnosed by modified jones criteria and they compared with 50 healthy age and sex match control. The IMA levels were compared among groups, and the association to acute phase reactants were investigated.Results: Values ofserumischemia modified albumin, ESR and C Reactive Protein were significantly higher in cases compared to control group (p value ≤0.001). But no significant differencewas found between values of serum albumin in cases compared to control group. Positive correlation was found between cases serum IMA and ESR, C-Reactive protein.Conclusion: Serumischemia modified albumin were significantly higher in children with acute rheumatic fever compared to control group, so IMA could be used as a biomarker in diagnosis of ARF. However, further multicenter and larger case studies are needed to provide stronger evidence.International Journal of Human and Health Sciences Vol. 05 No. 02 April’21 Page: 222-225

scholarly journals Peculiarities of the autonomic balance assessed through heart rate variability analysis in sportsmen and nonsportsmen

2008 ◽  
pp. 17-25 ◽  
Author(s):  
Oto Barak ◽  
Oleg Glazacev ◽  
Helena Dudnik ◽  
Irina Korobeinikova ◽  
Aleksandar Klasnja ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Frequency Domain ◽  
Control Group ◽  
Heart Rate Variability Analysis ◽  
Autonomic Balance ◽  
Basketball Players ◽  
Significant Difference ◽  
The Difference ◽  
Novi Sad

A comparative study was used to analyze the difference in autonomic balance assessed by time and frequency domain parameters of heart rate variability (HRV) between students athletes and non-sportsmen. Five-minute digital ECG trays were recorded in 21 students - athletes, 10 basketball players recruited from first league clubs of No- vi Sad and the Serbian representatives and 11 rowers from the Novi Sad rowing club 'Danubius'. The control group was formed by 15 non-sportsmen, students of the Medical faculty in Novi Sad who underwent the same registrations. Time and frequency-domain of HRV were analyzed by a software developed by the company 'Neurosoft', VNS-Spektr, Ivanovo, Russia. Resting heart rate in athletes was significantly lower (p < 0.01) than in non-sportsmen. In time-domain parameters HRV significantly higher values were present in the group of sportsmen as opposed to non-sportsmen RRNN (p < 0.01), RMSSD (p < 0.02) and pNN50 (p < 0.01). In frequency-domain of HRV statistically significant difference between the two groups was observed only in normalized values of LF and HF (p < 0.05) and their ratio LF/HF (p < 0.02). LFn was larger in non-sportsmen than in students-athletes. On the other hand HFn was larger in athletes than in non-sportsmen. The LF/HF ratio was larger in non-sportsmen (2.87 0.34) than in athletes (1.91 0.20). After dividing the athletes recruited for this investigation into two groups (basketball players and rowers) significant level of difference (p < 0.05) in HRV data was present only in the VLF spectrum (2060.55 290.68 ms2 for rowers and 1303.30 ? 169.95 ms2 for basketball players).

scholarly journals Heart rate variability in Egyptian children with acute rheumatic fever

Critical Care ◽  
2009 ◽  
Vol 13 (Suppl 1) ◽  
pp. P333
Author(s):  
MM Farid ◽  
M Abd Elmonim ◽  
M Elganzoury ◽  
M Abou Elmaaty ◽  
O Youssef
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Rheumatic Fever ◽  
Acute Rheumatic Fever ◽  
Egyptian Children

scholarly journals Characteristic Electrocardiography Findings of COVID-19 Patients

2021 ◽  
Vol 24 (9) ◽  
pp. 706-712
Author(s):  
Ali Gur ◽  
Zeynep Ulutas
Keyword(s):  
Heart Rate ◽  
Early Diagnosis ◽  
Qt Interval ◽  
Patient Management ◽  
Sinus Tachycardia ◽  
Control Group ◽  
Acute Period ◽  
Significant Difference ◽  
Pr Interval ◽  
Bundle Branch Blocks

Background: Determining a relationship between coronavirus disease 2019 (COVID-19) and the ECG findings of the patients with this disease can assist in early diagnosis and patient management based on these findings. This study aimed to investigate whether COVID-19 patients had characteristic ECG findings in the acute period. Methods: A total of 124 patients were divided into two groups as those diagnosed with COVID-19 and controls. The ECGs of these patients were evaluated in terms of rate, rhythm, presence of ST changes, PR interval, QRS width, QTc and QT interval, and presence of right and left bundle branch blocks. Results: On the ECG, the median heart rate of the COVID-19 patients was 104/min (IQR: 99–114), and there was a significant difference compared to the control group (P<0.001). The median PR interval was 157/ms, the QRS width was 86 ± 9/ms in the COVID-19 patients, with no significant difference compared to the controls (P = 0.161 and P = 0.631, respectively). The median QT interval of the COVID-19 patients was normal (400/ms), but a significant difference was detected compared to the controls (P = 0.005). The QTc, ST change, AF, and presence of right and left bundle branch blocks were not significantly different between the two groups. Conclusion: Considering the importance of ECG findings in order to diagnose COVID-19 disease early, we can state that sinus tachycardia is very common in COVID-19 patients, but there is no characteristic ECG finding for COVID-19, including tachycardia.

scholarly journals Cardiac Parasympathetic Withdrawal and Sympathetic Activity: Effect of Heat Exposure on Heart Rate Variability

2021 ◽  
Vol 18 (11) ◽  
pp. 5934
Author(s):  
Oriol Abellán-Aynés ◽  
Pedro Manonelles ◽  
Fernando Alacid
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Environmental Conditions ◽  
Sympathetic Activity ◽  
Heat Exposure ◽  
Repeated Measurements ◽  
Control Group ◽  
Poincaré Plot ◽  
Activity Effect ◽  
And Control

(1) Background: Research on heart rate variability has increased in recent years and the temperature has not been controlled in some studies assessing repeated measurements. This study aimed to analyze how heart rate variability may change based on environmental temperature during measurement depending on parasympathetic and sympathetic activity variations. (2) Methods: A total of 22 volunteers participated in this study divided into an experimental (n = 12) and control group (n = 10). Each participant was assessed randomly under two different environmental conditions for the experimental group (19 °C and 35 °C) and two identical environmental conditions for the control group (19 °C). During the procedure, heart rate variability measurements were carried out for 10 min. (3) Results: Significantly changes were observed for time and frequency domains as well as Poincaré plot variables after heat exposure (p < 0.05). These findings were not observed in the control group, whose conditions between measurements did not change. (4) Conclusions: The reduction of heart rate variability due to exposure to hot conditions appears to be produced mostly by a parasympathetic withdrawal rather than a sympathetic activation. Therefore, if consecutive measurements have to be carried out, these should always be done under the same temperature conditions.

Determinants of frequency domain measures of heart rate variability in the acute and convalescent phases of myocardial infarction

1994 ◽  
Vol 28 (8) ◽  
pp. 1273-1276 ◽  
Author(s):  
J. O Valkama ◽  
H. V Huikuri ◽  
K E J. Airaksinen ◽  
M. L Linnaluoto ◽  
J. T Takkunen
Keyword(s):  
Myocardial Infarction ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Frequency Domain

scholarly journals Effect of Acupuncture on Heart Rate Variability: A Systematic Review

2014 ◽  
Vol 2014 ◽  
pp. 1-19 ◽  
Author(s):  
Joanne W. Y. Chung ◽  
Vincent C. M. Yan ◽  
Hongwei Zhang
Keyword(s):  
Systematic Review ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
High Frequency ◽  
Healthy Subjects ◽  
Keyword Search ◽  
Data Extraction ◽  
Meta Analysis ◽  
Low Frequency ◽  
Control Group

Aim.To summarize all relevant trials and critically evaluate the effect of acupuncture on heart rate variability (HRV).Method.This was a systematic review with meta-analysis. Keyword search was conducted in 7 databases for randomized controlled trials (RCTs). Data extraction and risk of bias were done.Results.Fourteen included studies showed a decreasing effect of acupuncture on low frequency (LF) and low frequency to high frequency ratio (LF/HF ratio) of HRV for nonhealthy subjects and on normalized low frequency (LF norm) for healthy subjects. The overall effect was in favour of the sham/control group for high frequency (HF) in nonhealthy subjects and for normalized high frequency (HF norm) in healthy subjects. Significant decreasing effect on HF and LF/HF ratio of HRV when acupuncture was performed on ST36 among healthy subjects and PC6 among both healthy and nonhealthy subjects, respectively.Discussion.This study partially supports the possible effect of acupuncture in modulating the LF of HRV in both healthy and nonhealthy subjects, while previous review reported that acupuncture did not have any convincing effect on HRV in healthy subjects. More published work is needed in this area to determine if HRV can be an indicator of the therapeutic effect of acupuncture.

Heart Rate Variability And Respiratory Muscle Strength In Patients With Type Ii Diabetes Practicing Pilates: A Randomized Clinical Trial

2021 ◽  
Vol 17 ◽  
Author(s):  
Samara Sousa Vasconcelos Gouveia ◽  
Guilherme Pertinni de Morais Gouveia ◽  
Leydnaya Maria Souza ◽  
Bruno Cunha da Costa ◽  
Gustavo Henrique Melo Sousa ◽  
...  
Keyword(s):  
Clinical Trial ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Muscle Strength ◽  
Normal Distribution ◽  
Randomized Clinical Trial ◽  
Respiratory Muscle ◽  
Control Group ◽  
Respiratory Muscle Strength

Purpose: This study aimed to analyze the effect of a Pilates protocol on respiratory muscle strength and heart rate variability (HRV) in patients with type 2 diabetes. Method: A randomized clinical trial (RBR-2gc2qj) was conducted with a type 2 diabetic target population. Patients practiced the Pilates protocol for 8 weeks, with two visits per week. The variables tested were maximum inspiratory pressure (MIP), maximum expiratory pressure (MEP), and HRV (time and frequency domains). All variables were tested for normal distribution. Using SPSS 21.0, analysis of variance was performed for variables with normal distribution, and the Wilcoxon and Friedman tests were used for variables that did not show a normal distribution, with a 5% significance level. Results: Forty-four participants were included in the study (intervention group: 22; control group: 22; mean age: 61.23 ± 8.49 years), most of whom were female (77.3%), married or in a consensual union (59.1%), had complete literacy (31.8%), and had an average body mass index of 26.96 ± 4.35 kg/m2. There were no significant differences in MIP and MEP before and after the protocol between the intervention and control groups. Regarding HRV, there were significant differences in autonomic modulation, especially between the moments before and during exercise and between the moments during and after exercise; however, it was not possible to determine which system (sympathetic or parasympathetic) is most involved in these changes. Conclusion: The exercise protocol based on the Pilates method did not alter respiratory muscle strength but promoted changes in HRV, especially between the moments before and during exercise and during and after exercise.

Effect of short-term mental stress on time- domain indices of heart rate variability in obese individuals – A case- control study

Biomedicine ◽  
2021 ◽  
Vol 41 (2) ◽  
pp. 274-277
Author(s):  
Priya S.A. ◽  
R. Rajalakshmi
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Neuronal Activity ◽  
Time Domain ◽  
Mental Stress ◽  
Mental Arithmetic ◽  
High Body Mass Index ◽  
Control Group ◽  
Stress Task ◽  
The Individual

  Introduction and Aim: Mental stress may impact dramatically on dynamic autonomic control on heart. Many studies have demonstrated association of high body mass index (BMI) with greater risk for cardiovascular disease with disturbance in autonomic neuronal activity. Analysis of Heart rate variability (HRV)during acute mental stress assesses the autonomic status of the individual. Hence, we aimed to study the effect of acute mental stress on time domain measures in obese adults.   Materials and Methods:Sixty male volunteers of 30 each in study group (obese individuals) and control group (non-obese individuals) were recruited for the study. A basal recording of ECG in lead II was done on all the individuals. Then they underwent mental arithmetic stress task for 5 minutes during which again ECG was recorded. The change in time domain measures of HRV during rest and stress task was analyzed and compared between both the groups.   Results: Analysis of time domain measures of HRV revealed a statistically significant increase (p ? 0.001) in mean heart rate in both obese and non-obese individuals, while rMSSD(root mean square differences of successive RR interval) and SDNN (standard deviation of all NN intervals) showed a statistically significant (p? 0.001) decrease in obese individuals and non-obese individuals did not show any statistically significant change during the mental stress task.   Conclusion: In response to acute mental stress there was increased heart rate in both the groups. But the autonomic neuronal activity differed by way of sympathetic dominance in non-obese individuals and parasympathetic withdrawal in obese individuals.  

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