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| 21. |
Atrioventricular Nodal Function in the Immature Canine Heart |
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Pediatric Research,
Volume 23,
Issue 1,
1988,
Page 99-104
JORGE MCCORMACK,
HENRY GELBAND,
HUI XU,
JUAN VILLAFANE,
ADRIENNE STOLFI,
ARTHUR PICKOFF,
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摘要:
Previous studies have suggested that the atrioventricular nodal functional refractory period in the neonate is equal to or shorter than that of the ventricle, providing little or no protection to the ventricle against rapid atrial rates and allowing closely coupled atrial beats to fall within the ventricular vulnerable period. We evaluated atrioventricular node function in 21 mongrel neonatal puppies, 3–15 days old, and 15 adult dogs utilizing intracardiac His bundle recording and stimulation techniques. The mean atrioventricular nodal functional refractory period (173.1 ± 20.0 ms) exceeded both the ventricular effective refractory period (139.5 ± 14.3) and ventricular functional refractory period (163.3 ± 14.5) in the neonates. Furthermore, the atrioventricular node was the site of limiting antegrade conduction in all neonates. No ventricular arrhythmias were induced by atrial extrastimulation in any of the neonates. The site of conduction delay during atrial extrastimulation was confined to the atrioventricular node in 15/16 neonates (94%) while 1/16 (6%) had combined nodal and infranodal delay. The neonates developed Wenckebach, at significantly faster heart rates than the adults, but both groups developed Wenckebach at approximately twice the resting heart rate. Retrograde conduction was a consistent finding in the neonates. However, antegrade Wenckebach occurred at a significantly faster heart rate than retrograde Wenckebach suggesting different functional properties. Our data suggest that in the neonatal canine, the atrioventricular node functional refractory period is longer than both the ventricular effective refractory period and ventricular functional refractory period. Furthermore, the degree of protection offered by the neonatal atrioventricular node to the ventricle appears to be comparable to that of the adult.
ISSN:0031-3998
出版商:OVID
年代:1988
数据来源: OVID
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| 22. |
CHU Rangueil - TOULOUSE - FRANCE. CORRELATIONS OF THE PARAMETERS OF 24‐HOUR OF SECRETION WITH GRWOTH VELOCITY IN 93 CHILDREN OF VARYING HEIGHT |
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Pediatric Research,
Volume 23,
Issue 1,
1988,
Page 105-105
P. ROCHICCIOLI,
A. MESSINA,
M. TAUBER,
C. ENJUME,
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ISSN:0031-3998
出版商:OVID
年代:1988
数据来源: OVID
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| 23. |
IODIDE OVERLOAD IN MOTHERS AT DELIVERY INCREASES SERUM TSH AND THE RECALL RATE AT SCREENING FOR CONGENTITAL HYPOTHYRODISM (CH) IN THEIR BREASTFED INFANTS |
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Pediatric Research,
Volume 23,
Issue 1,
1988,
Page 106-106
J. Chanoine,
A. Pardou,
F. Delange,
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ISSN:0031-3998
出版商:OVID
年代:1988
数据来源: OVID
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| 24. |
GONADOTROP IN MEDIATED REGULATION OF mRNAs FOR INSULIN LIKE GROWTH FACTOR II (IGF‐II) AND MULLERIAN‐INHIBITORY FACTOR (MIF) IN HUMAN OVARIAN GRANULOSA CELLS |
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Pediatric Research,
Volume 23,
Issue 1,
1988,
Page 107-107
R. Voutilainen,
WL. Miller,
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ISSN:0031-3998
出版商:OVID
年代:1988
数据来源: OVID
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| 25. |
IIβ‐HYDROXYLASE DEFICIENCY CONGENITAL ADRENAL HYPERPLASIA (IIβ‐CAH)UPDATE OF PRENATAL DIAGNOSIS |
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Pediatric Research,
Volume 23,
Issue 1,
1988,
Page 108-108
A.,
Roster E.,
Leiberman Z.,
Hochberg J.,
Weidenfeld J.,
Chemke J.,
Sack N.,
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ISSN:0031-3998
出版商:OVID
年代:1988
数据来源: OVID
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| 26. |
SEX STEROID BINDING PROTEIN (SBP) IN PREMATURE INFANTS |
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Pediatric Research,
Volume 23,
Issue 1,
1988,
Page 109-109
M.,
Forest A.,
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ISSN:0031-3998
出版商:OVID
年代:1988
数据来源: OVID
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| 27. |
MEASUREMENT OF ATRIAL NATRIURETIC PEPTIDE (ANP), cGMP, ALDOSTERONE AND VASOPRESSIN LEVELS IN INFANTS |
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Pediatric Research,
Volume 23,
Issue 1,
1988,
Page 110-110
J.,
Weil T.,
Strom U.,
Kuhnle W.,
Rascher M.,
Brügmann J.,
Heim D.,
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ISSN:0031-3998
出版商:OVID
年代:1988
数据来源: OVID
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| 28. |
GROWTH AND ENDOCRINE FUNCTION AFTER BONE MARROW TRANSPLANTATION (BMT) WITH OR WITHOUT TOTAL BODY IRRADIATION (TBI) |
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Pediatric Research,
Volume 23,
Issue 1,
1988,
Page 111-111
M.,
Fontoura R.,
Brauner R.,
Rappaport A.,
Fischer E.,
Quintana JM.,
Zucker F.,
Bernaudin E.,
Vilmer A.,
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PDF (126KB)
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ISSN:0031-3998
出版商:OVID
年代:1988
数据来源: OVID
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| 29. |
EFFECTS OF THE SLOW RELEASE GNRH AGONIST DECAPEPIYL‐DEPOT (DO) ON GROWTH AND BONE MATURATION IN CHILDREN WITH CENTRAL PRECOCIUS PUBERTY (CPP) |
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Pediatric Research,
Volume 23,
Issue 1,
1988,
Page 112-112
W.,
Oostdijk R.,
Odink S.,
Drop C.,
Partsch F.,
Lorenzen W.,
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ISSN:0031-3998
出版商:OVID
年代:1988
数据来源: OVID
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| 30. |
GONADAL CONTROL OF PULSATILE SECRETION OF LB AND FSB IN PREPUBERTAL BOYS |
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Pediatric Research,
Volume 23,
Issue 1,
1988,
Page 113-113
L.,
Dunkel H.,
Alfthan U.,
Stenman J.,
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PDF (142KB)
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ISSN:0031-3998
出版商:OVID
年代:1988
数据来源: OVID
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