Time domain parameters of heart rate variability in children born as small-for-gestational age

2016 ◽  
Vol 27 (4) ◽  
pp. 663-670 ◽  
Author(s):  
Agata Zamecznik ◽  
Jerzy Stańczyk ◽  
Agnieszka Wosiak ◽  
Katarzyna Niewiadomska-Jarosik
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Nervous System ◽  
Gestational Age ◽  
Time Domain ◽  
Small For Gestational Age ◽  
Age Group ◽  
Lower Heart Rate ◽  
Appropriate For Gestational Age ◽  
The Time Domain

AbstractAccording to metabolic programming theory, small-for-gestational age patients are at high risk of cardiovascular diseases also because of the possible malfunction of the autonomic nervous system. Autonomic disorders can be assessed by heart rate variability. The aims of this study were to compare time domain parameters of heart rate variability in children born as small-for-gestational age and appropriate-for-gestational age and to assess the correlation of the postnatal and current somatic parameters with the time domain parameters. The small-for-gestational age group consisted of 68 children aged 5–10 years who were born with birth weight below the 10th percentile. The appropriate-for-gestational age group consisted of 30 healthy peers, matched in terms of gender and age. On the basis of Holter monitoring, slightly higher average heart rate was observed in the small-for-gestational age group than in the appropriate-for-gestational age group. It was found that all the time domain parameters (SDNN, SDNNi, SDANNi, rMSSD, pNN50) were lower in the small-for-gestational age group than in the appropriate-for-gestational age group. In the small-for-gestational age group, girls had lower heart rate and some of the heart rate variability parameters (SDNN, SDNNi, SDANNi) in comparison with boys.Children born as small-for-gestational age have impaired function of the autonomic nervous system. Moreover, in the small-for-gestational age group, autonomic balance moved towards the sympathetic component, which was evidenced by higher heart rate. Children with faster heart rate and lower heart rate variability parameters may be at risk of cardiovascular disease.

Heart rate variability and cardiac reflexes in small for gestational age infants

2006 ◽  
Vol 100 (3) ◽  
pp. 933-939 ◽  
Author(s):  
Barbara C. Galland ◽  
Barry J. Taylor ◽  
David P. G. Bolton ◽  
Rachel M. Sayers
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Confidence Interval ◽  
Gestational Age ◽  
Small For Gestational Age ◽  
Weight Status ◽  
Reflex Response ◽  
Supine Sleep ◽  
Appropriate For Gestational Age ◽  
Head Up Tilt

To assess the influence of intrauterine growth retardation and postnatal development on heart rate variability (HRV) and cardiac reflexes, we studied 27 healthy small for gestational age (SGA) and 23 appropriate for gestational age (AGA) infants during a nap study. Resting HRV was assessed by point dispersion of Poincaré plots for overall (SDRR) and instantaneous beat-to-beat variability (SDΔRR) and the ratio (SDRR/SDΔRR). Heart rate reflex and arousal responses to a 60° head-up tilt were determined. All tests/measures were repeated twice in quiet and active sleep and in prone and supine sleep positions at 1 and 3 mo of age. SGA infants exhibited higher resting sympathetic tone [SDRR/SDΔRR: 1.9 (95% confidence interval: 1.7, 2.0) and 1.7 (95% confidence interval: 1.5, 1.8) in SGA and AGA, respectively; P = 0.046] and a tendency for a smaller tachycardic reflex response to the tilt [Δheart rate: 24 beats/min (95% confidence interval: 20, 28) and 30 (95% confidence interval: 25, 34)] in SGA and AGA, respectively; P = 0.06]. HRV indexes were reduced in the prone compared with supine position ( P < 0.0001), but reflex tilt responses were unchanged with position. SGA/AGA differences were independent of sleep position. Gestational age weight status did not influence the likelihood of arousal, but prone sleeping per se reduced the odds 2.5-fold. The findings suggest reduced autonomic activity and cardiac reflexes in SGA infants. The finding that the sympathetic component of the control of HRV was higher in SGA infants could link with findings in adulthood of an association between being born SGA and a higher risk of cardiovascular disease.

scholarly journals Analysis of heart rate variability in corn snakes (Pantherophis guttatus)

2021 ◽  
Vol 10 (11) ◽  
pp. e294101119781
Author(s):  
Antonio Gomes da Silva Neto ◽  
Daniel Souza Ferreira Magalhães ◽  
Raduan Hage ◽  
Laurita dos Santos ◽  
José Carlos Cogo
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Nervous System ◽  
Autonomic Nervous System ◽  
Low Frequency ◽  
Autonomic Nervous ◽  
Rr Interval ◽  
Diagnosis And Prognosis ◽  
Frequency Domains ◽  
The Time Domain

The assessment of heart rate variability (HRV) by linear methods in conjunction with Poincaré plots can be useful for evaluating cardiac regulation by the autonomic nervous system and for the diagnosis and prognosis of heart disease in snakes. In this report, we describe an analysis of HRV in conscious adult corn snakes Pantherophis guttatus (P. guttatus).  The electrocardiogram (ECG) parameters were determined in adult corn snakes (8 females, 13 males) and used for HRV analysis, and the RR interval was analyzed by linear methods in the time and frequency domains. There was no sex-related difference in heart rate. However, significant differences were seen in the duration of the P, PR, and T waves and QRS complex; there was no difference in the QT interval. The values for the RR interval varied by 15.3% and 18.8% in male and female snakes, respectively, and there was considerable variation in the values for the high and low frequency domains. The changes in the time domain were attributed to regulation by the parasympathetic branch of the autonomic nervous system, in agreement with variations in the high and low frequency domains. The values for standard deviations 1 and 2 in Poincaré plots, as well as the values of the frequency domain, provide useful parameters for future studies of cardiac function in P. guttatus.

scholarly journals Heart Rate and Heart Rate Variability during Sleep in Small-for-Gestational Age Newborns

1994 ◽  
Vol 35 (4) ◽  
pp. 500-504 ◽  
Author(s):  
L Spassov ◽  
L Curzi-Dascalova ◽  
J Clairambault ◽  
F Kauffmann ◽  
M Eiselt ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Gestational Age ◽  
Small For Gestational Age

Assessment of heart rate variability for different somatotype category among adolescents

2018 ◽  
Vol 30 (3) ◽  
Author(s):  
Senthil Kumar Subramanian ◽  
Vivek Kumar Sharma ◽  
Rajathi Rajendran
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Sympathetic Activity ◽  
Parasympathetic Activity ◽  
Age Group ◽  
Autonomic Tone ◽  
Non Invasive ◽  
Invasive Test ◽  
Obesity And Overweight ◽  
The Time Domain

Abstract Background Somatotype is a quantified expression of the morphological conformation of a person in terms of three-numeral rating each representing one component; fat (endomorphy), muscle mass (mesomorphy) and bone length (ectomorphy) in the same order. Certain somatotypes are more prone to develop the particular disease. Obesity and overweight are already epidemic among Indian adolescents and are increasing at an alarming rate, and obesity is linked to cardiovascular (CV) risk in this age group. Identifying the heart rate variability (HRV) is an established non-invasive test to identify the CV risk. The objective of this study is to record the HRV data for each somatotype category and to compare the HRV data among these somatotype categories in adolescents. Methods The volunteer adolescents in the age group of 12–17 years were classified into a different somatotyping categories based on the Heath Carter somatotyping method. The short-term HRV was recorded in all the subjects using wireless BioHarness 3.0. Results Based on the time domain and frequency domain parameters, the parasympathetic activity showed decreasing order as follows: central>ectomorphy>mesomorphy>endomorphy, whereas sympathetic activity showed increasing order as follows: central<ectomorphy<mesomorphy<endomorphy in both boys and girls. Girls have higher parasympathetic activity and lesser sympathetic activity than boys in ectomorphy and mesomorphy. In the central somatotype and endomorphy categories, genders were comparable. Conclusion Our study suggests that endomorphy and mesomorphy have poorer autonomic tone when compared to other somatotype categories.

scholarly journals Higher Incidence of Hypospadias in Monochorionic Twins

2015 ◽  
Vol 18 (5) ◽  
pp. 591-594 ◽  
Author(s):  
Remco Visser ◽  
Nienke C. M. Burger ◽  
Erik W. van Zwet ◽  
Yvonne Hilhorst-Hofstee ◽  
Monique C. Haak ◽  
...  
Keyword(s):  
Multivariate Analysis ◽  
Birth Weight ◽  
Confidence Interval ◽  
Gestational Age ◽  
Small For Gestational Age ◽  
Medical Records ◽  
Odds Ratio ◽  
Age Group ◽  
Monochorionic Twins ◽  
Appropriate For Gestational Age

Background:Hypospadias is associated with twinning. The incidence of hypospadias in monochorionic and dichorionic male twins is, however, yet to be determined.Methods:All medical records of monochorionic and dichorionic twins admitted to our neonatal nursery between January 2004 and August 2013 were reviewed for the presence of hypospadias.Results:A total of 350 monochorionic and 303 dichorionic male twins were included in the study. The incidence of hypospadias in monochorionic and dichorionic groups was 4% (14/350) and 1% (3/303) (p= .016) respectively. In 11 of the 15 twin couples, hypospadias occurred in the twin with the lowest birth weight. The rate of hypospadias in twin infants small-for-gestational-age group was 10% (6/60) compared with 2% (11/593) in the appropriate-for-gestational-age group (p= .002). In a multivariate analysis, both monochorionicity and small-for-gestational-age were independently associated with hypospadias, odds ratio 4.1 (95% confidence interval (CI): 1.1–14.7) and 6.1 (95% CI: 2.2–17.2) respectively.Conclusions: The incidence of hypospadias is four-fold higher in monochorionic twins compared with dichorionic twins. Hypospadias is also independently associated with small-for-gestational-age.

scholarly journals Acute effect of different trainings in the variability of the heart rate of young football players

2020 ◽  
Vol 39 (2) ◽  
Author(s):  
Ramiz Arabaci ◽  
Emirhan Pehlivan ◽  
Recep Gorgulu
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Time Domain ◽  
Significant Interaction ◽  
Acute Effect ◽  
Football Players ◽  
Warm Up ◽  
The Time Domain

Objective:  To determine the time-domain (SDNN, RMSSD) of heart rate variability (HRV) and heart rate (HR) of young football players in different training sessions. Method: 15 football players voluntarily participated (mean age = 15.5 ± 0.5 years, height= 171.1 ± 7.9 cm, weight= 62.4 ± 8.9 kg, BMI= 21.2 ± 1.9 kg/m2).  They performed three different training:  speed, coordination, and match formation. The HRV and HR of the participants were measured during warm-up, main training, and cool-down in each of the three different training sessions. Results:  There was a significant interaction between time and intervention on RMSSD (Frmat= 2.983) and HR (Frmat t= 4.894). The results show that HR and HRV are affected differently by diverse training practices in football.

Changes in the Time-Domain of Heart Rate Variability and Corticosterone after Surgical Trauma to the Nasal Septum in Rats

2021 ◽  
Vol 499 (1) ◽  
pp. 247-250
Author(s):  
I. V. Kastyro ◽  
V. I. Popadyuk ◽  
I. V. Reshetov ◽  
M. G. Kostyaeva ◽  
S. G. Dragunova ◽  
...  
Keyword(s):  
Heart Rate ◽  
Heart Rate Variability ◽  
Time Domain ◽  
Nasal Septum ◽  
Surgical Trauma ◽  
The Time Domain
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