[article]
| Titre : |
Baroreceptors in preterm infants: their relationship to maturity and disease |
| Type de document : |
texte imprimé |
| Auteurs : |
Stephanie WALDMAN, Auteur ; Alfred N. KRAUSS, Auteur ; Peter A. M. AULD, Auteur |
| Année de publication : |
1979 |
| Article en page(s) : |
p.714-722 |
| Langues : |
Anglais (eng) |
| Index. décimale : |
PER Périodiques |
| Résumé : |
Using passive tipping to a 45 degrees head-up position, an attempt was made to elicit reflex vasoconstriction in 13 non-distressed preterm infants and 27 infants with hyaline membrane disease, all between 26 and 38 weeks gestation. An increase in vascular tone associated with a significant reduction in peripheral blood-flow was found in 11 of the 13 non-distressed infants, while the same response was lacking in 23 of the 27 distressed infants. No infant demonstrated significant tachycardia with tilting, and the non-distressed infants failed to maintain their mean aortic blood-pressure during tilting. The results suggest that reflex control of vascular tone is present in non-distressed infants as early as 26 weeks gestation, but not in infats with hyaline membrane disease, possibly because of a maximal increase in vascular tone as a response to illness. This is indicated by the findings of significantly higher resting peripheral vascular resistance and lower peripheral blood-flow in infants with this diesease. |
| Permalink : |
https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=501 |
in Developmental Medicine & Child Neurology > 21-6 (December 1979) . - p.714-722
[article] Baroreceptors in preterm infants: their relationship to maturity and disease [texte imprimé] / Stephanie WALDMAN, Auteur ; Alfred N. KRAUSS, Auteur ; Peter A. M. AULD, Auteur . - 1979 . - p.714-722. Langues : Anglais ( eng) in Developmental Medicine & Child Neurology > 21-6 (December 1979) . - p.714-722
| Index. décimale : |
PER Périodiques |
| Résumé : |
Using passive tipping to a 45 degrees head-up position, an attempt was made to elicit reflex vasoconstriction in 13 non-distressed preterm infants and 27 infants with hyaline membrane disease, all between 26 and 38 weeks gestation. An increase in vascular tone associated with a significant reduction in peripheral blood-flow was found in 11 of the 13 non-distressed infants, while the same response was lacking in 23 of the 27 distressed infants. No infant demonstrated significant tachycardia with tilting, and the non-distressed infants failed to maintain their mean aortic blood-pressure during tilting. The results suggest that reflex control of vascular tone is present in non-distressed infants as early as 26 weeks gestation, but not in infats with hyaline membrane disease, possibly because of a maximal increase in vascular tone as a response to illness. This is indicated by the findings of significantly higher resting peripheral vascular resistance and lower peripheral blood-flow in infants with this diesease. |
| Permalink : |
https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=501 |
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