Studying the mechanism of heart rate slowing down after birth by the method of HRV power spectrum analysis.
- Author:
Xi-Jin WANG
1
;
Hong-Wei WANG
;
Zhi-Fang YANG
Author Information
- Publication Type:Journal Article
- MeSH: Aging; physiology; Animals; Autonomic Nervous System; physiology; Bradycardia; physiopathology; Child; Electrocardiography; Heart Rate; physiology; Humans; In Vitro Techniques; Infant; Infant, Newborn; Rabbits; Signal Processing, Computer-Assisted
- From: Chinese Journal of Applied Physiology 2002;18(3):264-268
- CountryChina
- Language:Chinese
-
Abstract:
AIMTo explore the neurological mechanism of heart rate slowing down after birth and to investigate if the heart itself participates in the process.
METHODSWith the method of HRV power spectrum analysis, the regulatory mechanisms of autonomic nerves over heart rate were studied on different age groups of human beings and rabbits. Similar experiments were carried out on isolated perfused rabbit hearts in order to study if the heart itself were involved in the process of heart rate slowing down as they grew up.
RESULTSThe ratio of parasympathetic tone to sympathetic one is significantly increased as a child or rabbit grows up while the heart rate becomes slower. The spontaneous beating of isolated rabbit heart also slows down as the rabbit becomes older.
CONCLUSIONBoth of the nerve factor and heart itself are involved in the process of slowing down of heart rate as a child grows up.
