[Circadian and ultradian rhythms of the heart rate in the neonate]. / Ritmi circadiani ed ultradiani della frequenza cardiaca nel neonato.
G Ital Cardiol
; 16(12): 1022-6, 1986 Dec.
Article
em It
| MEDLINE
| ID: mdl-3556939
ABSTRACT
Few papers deal with the chronobiologic characteristics of heart rate in neonates. A better knowledge of this topic could be useful under both clinical and therapeutical point of view. We studied the circadian and ultradian rhythms of heart rate in 10 healthy neonates (5 males and 5 females). Six of them (60%) show a well defined circadian rhythm of heart rate such as adult subjects even if with an obviously higher mesor and with acrophases dispersed throughout the 24 hours. We also demonstrated one or more ultradian rhythms of heart rate for each neonate. The most frequent have a period between 4 hours and 6 minutes and 4 hours and 36 minutes. These rhythms are out of phase with the world outside which is the best evidence that they are not imposed by some undetected external factors.
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Base de dados:
MEDLINE
Assunto principal:
Recém-Nascido
/
Ritmo Circadiano
/
Frequência Cardíaca
Limite:
Humans
Idioma:
It
Ano de publicação:
1986
Tipo de documento:
Article