Open Access
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Journal of the American Heart Association, volume 10, issue 4

Maturation of the Cardiac Autonomic Nervous System Activity in Children and Adolescents

Lisette M. Harteveld 1
Ineke Nederend 1, 2
Arend D.J. ten Harkel 1
Nienke M. Schutte 2
Susanne R. de Rooij 3, 4
Helena Oldenhof 5
Arne Popma 5
Lucres M. C. Jansen 5
Jill Suurland 6
Hanna Swaab 6
E J de Geus 2
Show full list: 12 authors
Publication typeJournal Article
Publication date2021-02-02
scimago Q1
SJR2.126
CiteScore9.4
Impact factor5
ISSN20479980
Cardiology and Cardiovascular Medicine
Abstract
Background
Despite the increasing interest in cardiac autonomic nervous activity, the normal development is not fully understood. The main aim was to determine the maturation of different cardiac sympathetic‐(SNS) and parasympathetic nervous system (PNS) activity parameters in healthy patients aged 0.5 to 20 years. A second aim was to determine potential sex differences.
Methods and Results
Five studies covering the 0.5‐ to 20‐year age range provided impedance‐ and electrocardiography recordings from which heart rate, different PNS‐parameters (eg, respiratory sinus arrhythmia) and an SNS‐parameter (pre‐ejection period) were collected. Age trends were computed in the mean values across 12 age‐bins and in the age‐specific variances. Age was associated with changes in mean and variance of all parameters. PNS‐activity followed a cubic trend, with an exponential increase from infancy, a plateau phase during middle childhood, followed by a decrease to adolescence. SNS‐activity showed a more linear trend, with a gradual decrease from infancy to adolescence. Boys had higher SNS‐activity at ages 11 to 15 years, while PNS‐activity was higher at 5 and 11 to 12 years with the plateau level reached earlier in girls. Interindividual variation was high at all ages. Variance was reasonably stable for SNS‐ and the log‐transformed PNS‐parameters.
Conclusions
Cardiac PNS‐ and SNS‐activity in childhood follows different maturational trajectories. Whereas PNS‐activity shows a cubic trend with a plateau phase during middle childhood, SNS‐activity shows a linear decrease from 0.5 to 20 years. Despite the large samples used, clinical use of the sex‐specific centile and percentile normative values is modest in view of the large individual differences, even within narrow age bands.
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