scholarly journals Correlations between echocardiographic findings and heart rate recovery after exercise stress test in patients with autonomic nervous system dysfunction

2019 ◽  
Vol 11 (1) ◽  
pp. 156
Author(s):  
E. Enciu ◽  
S. Stanciu ◽  
G. Rouls
Keyword(s):  
Heart Rate ◽  
Nervous System ◽  
Autonomic Nervous System ◽  
Heart Rate Recovery ◽  
Stress Test ◽  
Exercise Stress Test ◽  
Exercise Stress ◽  
Autonomic Nervous System Dysfunction ◽  
Autonomic Nervous ◽  
Echocardiographic Findings

scholarly journals Heart Rate Variability and Heart Rate Recovery as prognostic factors

2015 ◽  
Vol 88 (3) ◽  
pp. 304-309 ◽  
Author(s):  
Cosmin Grad
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Nervous System ◽  
Heart Disease ◽  
Autonomic Nervous System ◽  
Ischemic Heart Disease ◽  
Heart Rate Recovery ◽  
Ischemic Heart ◽  
Exercise Stress ◽  
Autonomic Nervous

Background Heart rate (HR) can appear static and regular at a time at rest, during exercise or recovery after exercise. However, HR is constantly adjusted due to factors such as breathing, blood pressure control, thermoregulation and the renin-angiotensin system, leading to a more dynamic response that can be quantified using HRV (heart rate variability) . HRV is defined as the deviation in time between successive normal heart beat and is a noninvasive method to measure the total variation in a number of HR interval. HRV can serve as measure of autonomic activity of sino atrial node . The aim of the study was to determine the influence of certain clinical and paraclinical parameters on heart rate recovery after exercise in patients with ischemic heart disease and the relation with HRV using 24 h Holter monitoring.MethodsThe study included 46 patients who were subjected to cardiovascular exercise stress test and also to 24 h Holter EKG monitoring. Subjects had a mean age of 56.2±11,2 years, with a minimum of 25 and a maximum of 79 years. The study included 22 (47,8%) men and 24 (52,2%) women.  Statistical analysis was performed using MedCalc software version 14.8.1. Multivariate analysis consisted of the construction of several multiple linear regression models. A p value of 0.05 was considered statistically significant.ResultsThe HRV values (time domain) were all lower in the IHD compared with the group without coronary heart disease, even if the difference is not statistically significant. Also rest and maximal HR values were similar  but during the test varies in the sense that  those with IHD had higher values of rest and maximal  HR and lower HRR, but not statistically significant.ConclusionsHRV is a very easy and safe method if there is an available device and it is used for evaluation of the autonomic nervous system in many cardiovascular diseases, but also in other pathologies.In uncomplicated ischemic heart disease HRV is depressed, but not significant. HRR, which is also considered an indicator of the parasympathetic activityafter exercise termination, is also non-significantlly decreased in ischemic patients and the correlation between them is weak. Both HRV and HRR parameters can be easily measured, but the best algorythm of this issue requires further studies, conducted in larger patient populations. Although HRR and HRV are tools to measure the autonomic nervous system activity the relation between them need more studies to be able to quantify the arrhythmogenic risk.

scholarly journals Assessment of Cardiac Autonomic Nervous System Involvement in Systemic Sclerosis via Exercise Heart Rate Recovery

2014 ◽  
Vol 24 (1) ◽  
pp. 17-22 ◽  
Author(s):  
Ugur Nadir Karakulak ◽  
Sercan Okutucu ◽  
Levent Şahiner ◽  
Naresh Maharjan ◽  
Elifcan Aladag ◽  
...  
Keyword(s):  
Heart Rate ◽  
Nervous System ◽  
Autonomic Nervous System ◽  
Systemic Sclerosis ◽  
Heart Rate Recovery ◽  
Exercise Heart Rate ◽  
Cardiac Autonomic Nervous System ◽  
System Involvement ◽  
Autonomic Nervous

scholarly journals Heart rate variability as an indicator of autonomic nervous system disturbance in tetanus

2019 ◽  
Author(s):  
Ha Thi Hai Duong ◽  
Girmaw Abebe Tadesse ◽  
Phung Tran Huy Nhat ◽  
Nguyen Van Hao ◽  
John Prince ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Nervous System ◽  
Autonomic Nervous System ◽  
Clinical Signs ◽  
Autonomic Nervous System Dysfunction ◽  
Autonomic Nervous ◽  
Non Invasive ◽  
Nervous System Activity ◽  
Grade 3

AbstractAutonomic nervous system dysfunction (ANSD) is a significant cause of mortality in tetanus. Currently diagnosis relies on non-specific clinical signs. Heart rate variability (HRV) may indicate underlying autonomic nervous system activity and represents a potentially valuable non-invasive tool for ANSD diagnosis in tetanus. HRV was measured from 3 5-minute ECG recordings during a 24-hour period in a cohort patients with severe tetanus, all receiving mechanical ventilation. HRV measurements from all subjects - 5 with ANSD (Ablett Grade 4) and 4 patients without ANSD (Ablett Grade 3) - showed HRV was lower than reported ranges for healthy individuals. Comparing different severities of tetanus, raw data for both time and frequency measurements of HRV were reduced in those with ANSD compared to those without. Differences were statistically significant in all except root mean square standard deviation RMSSD (p=0.07) indicating HRV may be a valuable tool in ANSD diagnosis.

scholarly journals The Heart of an Endurance Athlete: Impact of and Recovery After an Ultra-Endurance Event.

2021 ◽  
Author(s):  
Anton Swart ◽  
Demitri Constantinou
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Nervous System ◽  
Autonomic Nervous System ◽  
The Body ◽  
Mountain Biking ◽  
Vagal Activity ◽  
Autonomic Nervous System Dysfunction ◽  
Autonomic Nervous ◽  
Ultra Endurance

Abstract Background: Acute bouts of ultra-endurance exercise may cause an acute reduction in cardiac function, causing a physiological cascade which releases cardiac biomarkers. This study set out to determine the cardiac stress and recovery of participation in a three-day ultra-endurance mountain biking event of athletes using heart rate variability (HRV) as an outcome measure. Sixteen healthy participants (male and female) participating in a three-day ultra-endurance mountain biking event underwent a five-minute resting electrocardiography (ECG) recording in a supine position. Heart rate variability measurements were recorded two days before the race (baseline testing), after each race day, and at 24-hour post-event (recovery). Results: Time-domain and frequency domain measures showed significant (p≤0.05) changes from baseline in HRV parameters after each race day. The significant changes in HRV parameters reflected an increase in sympathetic activity after each day of the event. Our data revealed that the mean HR and RR variability variables did not return to baseline value after 24-hours of recovery, reflecting autonomic nervous system dysfunction, and that changes persisted for at least 24-hours post-event.Conclusion: Our study shows that competing in an ultra-endurance mountain bike event led to diminished vagal activity and a decrease in HRV throughout the event and persisted for at least 24-hours post-event. The body was under continuous sympathetic dominance during rest as well as during each day of racing, implying each race day can be considered a physiological stress. This may, in turn, cause a disturbance in homeostasis and an increase in autonomic nervous system dysfunction. This has implications for further research, including dysrhythmia risk, and monitoring of athletes in advising a return to strenuous activity.

scholarly journals The heart of an endurance athlete: impact of and recovery after an ultra-endurance event.

2020 ◽  
Author(s):  
Anton Swart ◽  
Demitri Constantinou
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Nervous System ◽  
Autonomic Nervous System ◽  
The Body ◽  
Mountain Biking ◽  
Vagal Activity ◽  
Autonomic Nervous System Dysfunction ◽  
Autonomic Nervous ◽  
Ultra Endurance

Objectives Our study set out to determine the cardiac stress and recovery of participation in a three-day ultra-endurance mountain biking event of athletes using heart rate variability (HRV) as an outcome measure. Methods Sixteen healthy participants (male and female) participating in a three-day ultra-endurance mountain biking event underwent a five-minute resting ECG recording in a supine position. Heart rate variability measurements were recorded two days before the race (baseline testing), after each race day, and at 24-hour post-event (recovery). Results Time-domain and frequency domain measures showed significant (p≤0.05) changes from baseline in HRV parameters after each race day. Our study found significant changes in HRV parameters, all of which reflected an increase in sympathetic activity after each day of the event. These data also revealed that the mean HR and RR variability variables did not return to baseline value after 24-hours of recovery, reflecting autonomic nervous system dysfunction, and that changes persisted for at least 24-hours post-event. Conclusion Our study shows that competing in an ultra-endurance mountain bike event led to diminished vagal activity and a decrease in HRV throughout the event and persisted for at least 24 hours post-event. The body was under continuous sympathetic dominance during rest as well as during each day of racing, implying each race day can be considered a physiological stress. This may, in turn, cause a disturbance in homeostasis and an increase in autonomic nervous system dysfunction. This has implications for further research, including dysrhythmia risk, and monitoring of athletes in advising a return to strenuous activity.

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