Preliminary evidence for the evolution in complexity of heart rate dynamics during autonomic maturation in neonatal swine

被引:35
作者
Lipsitz, LA [1 ]
Pincus, SM [1 ]
Morin, RJ [1 ]
Tong, SW [1 ]
Eberle, LP [1 ]
Gootman, PM [1 ]
机构
[1] SUNY DOWNSTATE MED CTR, DOWNSTATE MED CTR, DEPT PHYSIOL, BROOKLYN, NY USA
来源
JOURNAL OF THE AUTONOMIC NERVOUS SYSTEM | 1997年 / 65卷 / 01期
关键词
D O I
10.1016/S0165-1838(97)00028-3
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
Previous studies suggest that the autonomic nervous system plays an important role in the generation of complex heart rate dynamics. Therefore, we hypothesized that the complexity (irregularity) of cardiac interbeat intervals would evolve with the maturation of autonomic innervation to the heart. Twelve healthy newborn piglets were implanted with ECG transmitters and studied at one or more different ages up to 33 days of age, the period during which pigs develop functional sympathetic innervation of the heart from the stellate ganglia. Three animals underwent right stellate ganglionectomy, two a left stellate ganglionectomy, two a right cardiac vagotomy and five a sham procedure. The statistic, approximate entropy (ApEn), was used to quantify the regularity of interbeat interval fluctuations. Sham-operated animals showed an increase in the standard deviation (SD) and irregularity (ApEn) of cardiac interval fluctuations with increasing age. Right stellate ganglionectomized piglets had lower interbeat interval ApEn values, but similar SD's by 26-27 days of age compared to sham-operated animals. Left stellate ganglionectomy, which affects cardiac inotropy rather than chronotropy, had no effect on cardiac interval irregularity, while vagotomy had an indeterminant effect. The increasing irregularity of interbeat interval dynamics during autonomic maturation and the apparent attenuation of heartbeat irregularity when right stellate ganglion innervation is interrupted, provides empirical support for the notion that complex heartbeat dynamics in the mature animal are the result of a network of autonomic neural pathways that enables an organism to adapt to stress. (C) 1997 Elsevier Science B.V.
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页码:1 / 9
页数:9
相关论文
共 34 条
[1]   THE ABILITY OF SEVERAL SHORT-TERM MEASURES OF RR VARIABILITY TO PREDICT MORTALITY AFTER MYOCARDIAL-INFARCTION [J].
BIGGER, JT ;
FLEISS, JL ;
ROLNITZKY, LM ;
STEINMAN, RC .
CIRCULATION, 1993, 88 (03) :927-934
[2]   CARDIOVASCULAR-RESPONSES TO ARTERIAL AND VENOUS HEMORRHAGE IN NEONATAL SWINE [J].
BUCKLEY, BJ ;
GOOTMAN, N ;
NAGELBERG, JS ;
GRISWOLD, PG ;
GOOTMAN, PM .
AMERICAN JOURNAL OF PHYSIOLOGY, 1984, 247 (04) :R626-R633
[3]   EFFECTS OF AGE ON INTRINSIC HEART-RATE, HEART-RATE-VARIABILITY, AND AV CONDUCTION IN HEALTHY HUMANS [J].
CRAFT, N ;
SCHWARTZ, JB .
AMERICAN JOURNAL OF PHYSIOLOGY-HEART AND CIRCULATORY PHYSIOLOGY, 1995, 268 (04) :H1441-H1452
[4]  
FLEISHER LA, 1997, IN PRESS CLIN SCI
[5]   CARDIAC RESPONSES ELICITED BY STIMULATION OF LOCI WITHIN STELLATE GANGLIA OF DEVELOPING SWINE [J].
GOOTMAN, PM ;
GANDHI, MR ;
COREN, CV ;
KAPLAN, NM ;
PISANA, FM ;
BUCKLEY, BJ ;
ARMOUR, JA ;
GOOTMAN, N .
JOURNAL OF THE AUTONOMIC NERVOUS SYSTEM, 1992, 38 (03) :191-200
[6]  
GOOTMAN PM, 1985, CARDIAC MORPHOGENESI, P267
[7]   THE R-R INTERVAL AND R-R VARIABILITY IN NORMAL INFANTS DURING SLEEP [J].
HADDAD, GG ;
EPSTEIN, RA ;
EPSTEIN, MAF ;
LEISTNER, HL ;
MELLINS, RB .
PEDIATRIC RESEARCH, 1980, 14 (06) :809-811
[8]   BRAIN-STEM CELLS OF ORIGIN OF THE CERVICAL VAGUS AND CARDIOPULMONARY NERVES IN THE NEONATAL PIG (SUS-SCROFA) [J].
HOPKINS, DA ;
GOOTMAN, PM ;
GOOTMAN, N ;
DIRUSSO, SM ;
ZEBALLOS, ME .
BRAIN RESEARCH, 1984, 306 (1-2) :63-72
[9]  
HOPKINS DA, 1989, NEUR ABSTR, V15, P592
[10]   AGING AND THE COMPLEXITY OF CARDIOVASCULAR DYNAMICS [J].
KAPLAN, DT ;
FURMAN, MI ;
PINCUS, SM ;
RYAN, SM ;
LIPSITZ, LA ;
GOLDBERGER, AL .
BIOPHYSICAL JOURNAL, 1991, 59 (04) :945-949