scholarly journals Influence of acute mental stress on blood pressure, heart rate and heart rate variability in male medical students: An experimental study from tertiary care hospital, Nepal

2020 ◽  
Vol 7 (1) ◽  
pp. 11-17
Author(s):  
Karishma Rajbhandari Pandey ◽  
Rita Khadka ◽  
Dipesh Raj Panday ◽  
Kopila Agrawal ◽  
Bishnu Hari Paudel
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Medical Students ◽  
Mental Stress ◽  
Cardiovascular Health ◽  
Tertiary Care ◽  
Young Male ◽  
Care Hospital ◽  
Autonomic Tone ◽  
Nervous Control

Background: Medical students experience immense mental stress while understanding and retaining new terms, drug names and mechanisms and eventually generating a concept. Such stress, in long run, may affect their cardiovascular health. This can be assessed by heart rate variability, a reliable non-penetrating tool to determine the cardiac autonomic tone. Material and methods: Thirty healthy young male medical students of BPKIHS, Nepal of age 21.03 ± 1.73 years, and BMI 20.83 ± 2.07 kg/m2 were recruited for the present study. Their resting BP, HR, RR, and short-term heart rate variability (HRV) were recorded in sitting position. Each subject was given a mental stress for 5 min. Their BP, HR, and RR were recorded at 5th min of mental stress. HRV of 5 min was also recorded simultaneously during mental stress. Results: Mental stress increased SBP (p=0.001), DBP (p= 0.001), PR (p= 0.005) and RR (p= 0.042) in young male medical students. Time domain measures of HRV viz; RMSSD (p= 0.001), NN50 (p= 0.001) and PNN50 (p=0.001), which are markers of parasympathetic activity, were significantly decreased during mental stress. Conclusion: Acute mental stress increases BP and HR by withdrawing parasympathetic nervous control in young, healthy male medical students.

scholarly journals Evaluation of role of heart rate variability with holter monitoring in chronic kidney disease

2020 ◽  
Vol 8 (6) ◽  
pp. 2188
Author(s):  
Naveen Reddy Avula ◽  
Tusahr Dighe ◽  
Atul Sajgure ◽  
Charan Bale ◽  
Pavan Wakhare
Keyword(s):  
Chronic Kidney Disease ◽  
Heart Rate ◽  
Heart Rate Variability ◽  
Kidney Disease ◽  
Kidney Diseases ◽  
Tertiary Care ◽  
Holter Monitoring ◽  
Stage Iii ◽  
Care Hospital ◽  
Ckd Stage

Background: Chronic kidney disease is prevalent disease even in absence of diabetes and hypertension in 12% adults over 65 yrs of age. Autonomic imbalance is not studied in detail which could be a risk factor for chronic kidney disease.Methods: This Study was observational study in a tertiary care Hospital in pune, india and was conducted for a period of 1 year with sample size of 52. All subjects were known cases of chronic kidney disease from stage III to VD. All individuals of age >18yrs and eGFR ≤60ml/min/1.73m2 according to CKD- EPI equation were included in the study and who were not giving consent were excluded. 24 hrs Holter monitoring was done in stages from ckd stages III to V, for ckd stage VD on both Hemodialysis day and Non hemodialysis. Analysis was done using SPSS version 20 (IBM SPSS Statistics Inc., Chicago, Illinois, USA) Windows software program. The paired t test, analysis of variance (ANOVA) and Chi-square test were used. Level of significance was set at p≤0.05.Results: In this study when Heart rate variability (HRV) parameters were compared in different stages of ckd from stage III to VD (on Hemodialysis day) SDNN, SDNN Index were found to be statistically significant and on non Hemodialysis day SDNN Index was found to be statistically significant. In each subgroup of ckd stage V when diabetic subjects were compared with non-diabetic subjects, HRV parameters like ratio of P/S which was found to be low and significant in ckd stage V diabetic subjects.Conclusions: Chronic kidney disease itself can affect the HRV parameters. Causal relationship between HRV and chronic kidney diseases can be vice versa and further needs larger and prospective studies.

scholarly journals Impact of shorter MDR tuberculosis regimen drugs on heart rate variability in MDR tuberculosis patients at tertiary care hospital

2021 ◽  
Vol 10 (7) ◽  
pp. 813
Author(s):  
Disha S. Patel ◽  
Chetankumar R. Acharya
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Nervous System ◽  
Repeated Measures ◽  
Tertiary Care ◽  
Low Frequency ◽  
Care Hospital ◽  
Active Pulmonary Tuberculosis ◽  
Significant Difference ◽  
Mdr Tb

Background: Tuberculosis is major cause of death in India. Analysis of heart rate variability is one of the most popular methods of autonomic nervous system evaluation. Shorter MDR-TB regimen drugs affect both central nervous system as well as peripheral nervous system. Existing research suggests that active pulmonary tuberculosis causes ANS dysfunction. So, by HRV measurement impact of shorter MDR-TB regimen drugs on autonomic dysfunction can be correlated. Aim of the current investigation was to evaluate effect of shorter MDR-TB regimen drugs on cardiac autonomic regulation in MDR-TB patients with respect to heart rate variability as a parameter.Methods: Fifty newly diagnosed MDR-TB patients of either gender on shorter MDR- TB regimen were enrolled in this study after taking consent. After 20 minutes rest, ECG was taken by “physiopac digital polygraph” software for 5 minutes. Two follow-up HRV assessments were done on 2nd month and 4th or 6th month of treatment. HRV was calculated by root mean square deviation of successive differences between adjacent RR intervals (RMSSD) and low frequency and high frequency ratio.Results: Repeated measures ANOVA showed no statistically significant difference in HRV parameters between baseline, 2 months and 6 months groups. So, sympathetic and parasympathetic modulation in terms of HRV remains unchanged during treatment of MDR-TB with shorter MDR-TB regimen drugs.Conclusions: Shorter MDR-TB regimen drugs don’t have any significant impact on HRV in MDR- TB patients, No correlation was observed between HRV and heart rate in MDR-TB patients.

Ultra-short heart rate variability reliability for cardiac autonomic tone assessment in mesial temporal lobe epilepsy

2021 ◽  
pp. 106662
Author(s):  
Hiago Murilo Melo ◽  
Jefferson Luiz Brum Marques ◽  
Guilherme Loureiro Fialho ◽  
Peter Wolf ◽  
André D’Ávila ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Temporal Lobe Epilepsy ◽  
Temporal Lobe ◽  
Mesial Temporal Lobe Epilepsy ◽  
Autonomic Tone ◽  
Mesial Temporal Lobe

Complexity and time asymmetry of heart rate variability are altered in acute mental stress

2014 ◽  
Vol 35 (7) ◽  
pp. 1319-1334 ◽  
Author(s):  
Z Visnovcova ◽  
M Mestanik ◽  
M Javorka ◽  
D Mokra ◽  
M Gala ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Mental Stress ◽  
Time Asymmetry

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.  

scholarly journals Estimation of heart rate variability from finger photoplethysmography during rest, mild exercise and mild mental stress

2021 ◽  
Vol 12 (1) ◽  
pp. 89-102
Author(s):  
Bjørn-Jostein Singstad ◽  
Naomi Azulay ◽  
Andreas Bjurstedt ◽  
Simen S. Bjørndal ◽  
Magnus F. Drageseth ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Physical Exercise ◽  
Mental Stress ◽  
Fiducial Point ◽  
Point Selection ◽  
Maximum Slope ◽  
Robust Parameter ◽  
Signal Processing Methods ◽  
Selection Of

Abstract Due to the possibilities in miniaturization and wearability, photoplethysmography (PPG) has recently gained a large interest not only for heart rate measurement, but also for estimating heart rate variability, which is derived from ECG by convention. The agreement between PPG and ECG-based HRV has been assessed in several studies, but the feasibility of PPG-based HRV estimation is still largely unknown for many conditions. In this study, we assess the feasibility of HRV estimation based on finger PPG during rest, mild physical exercise and mild mental stress. In addition, we compare different variants of signal processing methods including selection of fiducial point and outlier correction. Based on five minutes synchronous recordings of PPG and ECG from 15 healthy participants during each of these three conditions, the PPG-based HRV estimation was assessed for the SDNN and RMSSD parameters, calculated based on two different fiducial points (foot point and maximum slope), with and without outlier correction. The results show that HRV estimation based on finger PPG is feasible during rest and mild mental stress, but can give large errors during mild physical exercise. A good estimation is very dependent on outlier correction and fiducial point selection, and SDNN seems to be a more robust parameter compared to RMSSD for PPG-based HRV estimation.

scholarly journals Mental stress in infertility: a tertiary care hospital-based study

2018 ◽  
Vol 7 (10) ◽  
pp. 4249
Author(s):  
Susmita Bhattacharya ◽  
Amit Kyal ◽  
Payel Mondal ◽  
Partha Mukhopadhyay ◽  
Mrinalini Chowdhury ◽  
...  
Keyword(s):  
Mental Stress ◽  
Married Couple ◽  
Tertiary Care ◽  
Cross Sectional Study ◽  
Dyadic Adjustment ◽  
Care Hospital ◽  
Chi Square ◽  
Cross Sectional ◽  
Primary Infertility ◽  
Icd 10

Background: Most of the couples suffering from infertility report it to be the most stressful and depressing period of their life, more so if it is a primary infertility. Studies regarding the prevalence and role of infertility-specific stress especially in eastern part of India is very limited. The objective of the present study was to estimate the prevalence of infertility-specific stress and its role in marital adjustment in women diagnosed with infertility.Methods: It was a cross-sectional study done on 80 married couple diagnosed with infertility (both primary and secondary) over 1 year from July 2016 to June,2017. Dyadic Adjustment Scale (DAS), "semi-structured questionnaire" compiled by the authors and "ICD-10 Classification of Mental and Behavioral Disorders (Clinical Descriptions and Diagnostic Guidelines)" were used for the evaluation. The analysis was done using SPSS (version 16) and Chi-square test.Results: Around 86% infertile women and 21% infertile men were found to suffer from mental stress. Infertility related stress were more in patients with primary infertility than in secondary one. Women mostly (56.5%) coped with stress by self-blaming whereas men (58.2%) by blaming the partner.Conclusions: Mental stress was significantly associated with infertility. In fact, maladjustment in marital relation caused by the stress adversely affected the conjugal life and thus also the fertility. Proper counselling of both partners might be helpful to solve this problem.

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