scholarly journals The Significance of "LF-component and HF-component which Resulted from Frequency Analysis of Heart Rate" and "the Coefficient of the Heart Rate Variability"-Evaluation of Autonomic Nerve Function by Acceleration Plethysmography-

2005 ◽  
Vol 32 (6) ◽  
pp. 504-512 ◽  
Author(s):  
Haruko TAKADA ◽  
Mikio TAKADA ◽  
Ai KATAYAMA
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Frequency Analysis ◽  
Autonomic Nerve ◽  
Nerve Function ◽  
Autonomic Nerve Function

scholarly journals Assessment of Autonomic Nerve Function In Patients With Irritable Bowel Syndrome

2012 ◽  
Vol 7 (1) ◽  
pp. 53-59
Author(s):  
Mohammad Nayem ◽  
Noorzahan Begum ◽  
Sultana Ferdousi
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Irritable Bowel Syndrome ◽  
Autonomic Nerve ◽  
Total Power ◽  
Heart Rate Variability Analysis ◽  
Nerve Function ◽  
Autonomic Nerve Function ◽  
Irritable Bowel ◽  
Function Activity

Background: Autonomic nerve function impairment is related to development of Irritable Bowel Syndrome (IBS). Heart rate variability (HRV) is a useful tool to measure autonomic nerve function activity and also sympatho-vagal balance.Objective: To assess autonomic nerve function activity by heart rate variability analysis in patients with Irritable Bowel Syndrome.Methods: This cross sectional study was conducted in the Department of Physiology, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka from 1st July 2010 to 30th June 2011. Ninety patients aged 20-50 years of both sexes with Irritable bowel syndrome were included in the study group. They were enrolled from the OPD of Gastroenterology in BSMMU. For comparison age and sex matched 30 apparently healthy subjects were also studied as control. The power spectral HRV parameters were recorded by a digital Polyrite. For statistical analysis ANOVA, independent sample t-test were performed.Results: Mean resting pulse rate, mean HR, SBP, DBP, LF, LF norm and LF/HF were significantly higher(P<0.001) and total power, HF, HF norm were significantly lower(P<0.001) in IBS group compared to those of control.Conclusion: This study concludes markedly lower parasympathetic with concomitant higher sympathetic activity and shifting of sympathovagal balance towards sympathetic predominance in patients of IBS. DOI: http://dx.doi.org/10.3329/jbsp.v7i1.11163 J Bangladesh Soc Physiol. 2012, June; 7(1): 53-59

scholarly journals Correlation between Palpitations below the Heart in Traditional Chinese Medicine and Autonomic Nerve Function Based on Heart Rate Variability: A Case-Control Study

2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Chengcheng Song ◽  
Kelong Chen ◽  
Ziqian Wu ◽  
Wei Liu ◽  
Ling Chen ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Logistic Regression ◽  
Risk Factor ◽  
Chinese Medicine ◽  
Traditional Chinese Medicine ◽  
Autonomic Nerve ◽  
Nerve Function ◽  
Spearman Correlation ◽  
Autonomic Nerve Function

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.

scholarly journals Effect of slow breathing exercise on non linear Heart rate variability in transfusion dependent thalassemic patients

2019 ◽  
Vol 14 (1) ◽  
pp. 26-32
Author(s):  
Kamol Chandra Das ◽  
Sultana Ferdousi
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Conventional Treatment ◽  
Autonomic Nerve ◽  
Nerve Function ◽  
Breathing Exercise ◽  
Autonomic Nerve Function ◽  
Non Linear ◽  
Healthy Control ◽  
Slow Breathing

Background: Nonlinear measure of heart rate variability (HRV) is an emerging tool to detect changes in cardiac autonomic nerve function (CANF) in transfusion dependent thalassemic (TDT) patients. Slow breathing exercise (SBE) can significantly improve HRV in health and various diseases. Objective: To observe the effect of slow breathing exercise (SBE) on non linear measures of HRV in TDT patients. Methods: This prospective interventional study was done in the Department of Physiology, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka in 2018 on 60 male TDT patients aged 15-30 years. Thirty patients received conventional treatment and 30 patients performed slow breathing exercise along with the conventional treatment for 3 months. Age and sex matched 30 healthy control were enrolled. All subjects were followed up at baseline and after 3 months. Non linear (Poincare) HRV parameters were recorded by Power Lab 8/35 AD Instrument, Australia. For statistical analysis paired sample ‘ t’ test and independent sample ‘t’ test were used. Result: SD1, SD2 and SD1/SD2 were found significantly lower in TDT patients compared to healthy control at baseline. After 3 months of slow breathing exercise, significant increment of these parameters occurred with trend of improvement in cardiac autonomic nerve function in this group of patients. Conclusion: Slow breathing exercise may improve cardiac autonomic nerve function and sympathovagal balance in transfusion dependent thalassemic patients. J Bangladesh Soc Physiol. 2019, June; 14(1): 26-32

scholarly journals Effect of Aging on Short Term Heart Rate Variability

2015 ◽  
Vol 9 (2) ◽  
pp. 78-82 ◽  
Author(s):  
Qazi Farzana Akhter ◽  
Qazi Shamima Akhter ◽  
Farhana Rohman ◽  
Susmita Sinha ◽  
Sybilla Ferdousi
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Healthy Subjects ◽  
Middle Age ◽  
Older Age ◽  
Autonomic Nerve ◽  
Age Group ◽  
Nerve Function ◽  
Autonomic Nerve Function

Background: Heart rate variability has been considered as an indicator of autonomic nerve function status. Few works have been done to assess the heart rate variability in normal healthy subjects in different countries. Objectives: To assess the cardiac autonomic nerve function status in healthy Bangladeshi population of different age groups by analyzing time domain measures of Heart Rate Variability. Methods: This cross sectional study was conducted in the Department of Physiology, Dhaka Medical College, Dhaka from the period of July 2012 to June 2013. For this purpose, a total number of 180 healthy subjects were selected with the age ranging from 15-60 years of both sexes. All the study subjects were divided into 3 different groups according to age (Control 15-30 years; middle age 31-45 years; older age 46-60 years). Each group included 60 subjects of which 30 were male and 30 were female. The subjects were selected from different areas of Dhaka city by personal contacts. HRV parameters were recorded by a 4 active channels, RMS Polyrite-D-2 machine For statistical analysis, one way ANOVA, unpaired Student’s ‘t’-test and Pearson’s correlation coefficient test were performed. as applicable. Results: Systolic blood pressure (SBP), diastolic blood pressure (DBP) were significantly (p<0.001) higher in older group in comparison to control & middle age group. Again RR interval and RMSSD (p<0.001), were significantly lower in older age group (p<0.05) compared to control & also to middle age group. But HR was found significantly higher (p<0.05)in both middle and older subjects than control and also in older (p<0.05) compared to middle age. Correlation analysis showed moderate negative correlation of mean R-R with age in middle age whereas significant negative correlation for RMSSD both in middle and older age subjects. Conclusion: In this study, markedly decreased cardiac parasympathetic function were found with aging process. DOI: http://dx.doi.org/10.3329/jbsp.v9i2.22801 Bangladesh Soc Physiol. 2014, December; 9(2): 78-82

scholarly journals Assessment of cardiac autonomic nerve function status in female with iron deficiency anemia

2016 ◽  
Vol 43 (3) ◽  
pp. 125-129
Author(s):  
Farhana Rahman ◽  
Qazi Shamima Akhter ◽  
Qazi Farzana Akhter ◽  
Syeda Tasfia Siddika
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Iron Deficiency ◽  
Iron Deficiency Anemia ◽  
Autonomic Nerve ◽  
Total Power ◽  
Deficiency Anemia ◽  
Invasive Technique ◽  
Nerve Function ◽  
Autonomic Nerve Function

Iron deficiency anemia is considered as one of the major public health problem in Bangladesh. Cardiac autonomic nerve dysfunction may present in iron deficiency anemia which increases the risk and further complications of this disease. Assessment of heart rate variability (HRV) is a non-invasive technique to evaluate cardiac autonomic nerve function status. To assess the cardiac autonomic nerve function status by heart rate variability analysis, 100 female subjects with iron deficiency anemia aged 20-45 years were included in the study group. For comparison, age and sex matched 100 apparently healthy female were selected as control. The HRV parameters were recorded by a 4 active channels, Polyrite-D. Mean resting pulse rate, LF power, LF norm and LF/HF were significantly (p <0.0001) higher and total power, HF power, HF norm were significantly (p <0.0001) lower in subjects with iron deficiency anemia in comparison to those of control group. This study concludes that cardiac parasympathetic activity was reduced in female with iron deficiency anemia.Bangladesh Med J. 2014 Sep; 43 (3): 125-129

scholarly journals Heart Rate Variability in Patients with Rheumatoid Arthritis

2013 ◽  
Vol 7 (2) ◽  
pp. 78-82 ◽  
Author(s):  
Kawser Jahan ◽  
Noorzahan Begum ◽  
Sultana Ferdousi
Keyword(s):  
Rheumatoid Arthritis ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Time Domain ◽  
Cross Sectional Study ◽  
Autonomic Nerve ◽  
Nerve Function ◽  
Activity Data ◽  
Cross Sectional ◽  
Autonomic Nerve Function

Background: Altered cardiovascular autonomic nerve function with impaired sympathovagal balance is found in rheumatoid arthritis (RA). Heart Rate Variability (HRV) analysis is an important tool for assessment of autonomic nerve activity. Objective: To assess cardiac autonomic nerve function status in patients with Rheumatoid arthritis (RA) by time domain measures of HRV. Methods: This cross sectional study was conducted in the Department of Physiology, Bangabandhu Sheikh Mujib Medical University (BSMMU), Dhaka from January to December 2010. Sixty female RA patients, age range 18-50 years were constituted study group enrolled from the Out- patient Rheumatology Wing, Department of Medicine, BSMMU. Age matched thirty apparently healthy females were studied as control. Time domain measures of Heart Rate Variability (HRV) such as Mean RR intervals, Mean HR, SDNN, RMSSD, NN50% and PNN 50% were recorded for 5 minutes by a Polygraph machine to observe cardiac autonomic nerve function activity. Data were analyzed by independent sample t test. Results: Mean R-R interval, SDNN, RMSSD, PNN50%, NN50% were significantly lower (p<0.001) but heart rate was significantly (P<0.001) higher in rheumatoid arthritis patients. Conclusion: Cardiac autonomic nerve function is impaired and characterized by reduced resting parasympathetic activity in female Rheumatoid Arthritis patients. DOI: http://dx.doi.org/10.3329/jbsp.v7i2.14455 J Bangladesh Soc Physiol. 2012, December; 7(2): 78-82

scholarly journals Heart Rate Variability in Patients with Essential Hypertension

1970 ◽  
Vol 5 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Rehnuma Tabassum ◽  
Noorzahan Begum ◽  
Sultana Ferdousi ◽  
Shelina Begum ◽  
Taskina Ali
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Essential Hypertension ◽  
Time Domain ◽  
Autonomic Nerve ◽  
Nerve Function ◽  
Parasympathetic Nerve ◽  
Hypertensive Patients ◽  
Autonomic Nerve Function ◽  
Normotensive Subjects

Background: Essential hypertension may be associated with altered cardiovascular autonomic nervefunction. Heart Rate Variability (HRV) analysis is an important tool for quantitative measurement ofautonomic nerve activity. Objective: To assess the cardiac autonomic nerve function status in essentialhypertension by analyzing time domain measures of heart rate variability. Methods: This cross sectional study was carried out in the Department of Physiology, Bangabandhu Sheikh Mujib MedicalUniversity from 1st July 2008 to 30th June 2009.For this purpose, 60 hypertensive male patients withage ranged between 40-60 years (group B) were enrolled from the Out Patient Department of Cardiology,BSMMU, Dhaka. Based on treatment received, hypertensive patients were subdivided into group B1i.e.untreated patients on their 1st day of diagnosis and group B2 i.e.patients with antihypertensivetherapy. For comparison, 30 age & sex matched apparently healthy normotensive subjects (group A)were also studied as control group. Time domain measures of Heart Rate Variability (HRV) such asMean RR intervals, Mean HR, SDNN & RMSSD were assessed by a Polygraph machine to observeboth sympathetic and parasympathetic nerve function status. For statistical analysis of data,Independent sample t-test, One-way ANOVA test, were used as applicable. Results: Mean R-R interval SDNN and RMSSD were significantly (P<0.01) lower but mean heart rate was significantly (P<0.01)higher in untreated hypertensive patients than those of normotensive subjects. But differences in allthese 4 parameters when compared between control and treated hypertensive patients were foundstatistically non significant. Conclusion: Impaired cardiac autonomic nerve function characterized bysympathetic overactivity may occur in hypertensive patients.Key words: Mean RR; SDNN; RMSSD; hypertensionDOI: 10.3329/jbsp.v5i1.5411J Bangladesh Soc Physiol. 2010 June; 5(1): 1-7

Sign in / Sign up

Export Citation Format

Share Document