Ajouter le résultat dans votre panier Faire une suggestion Affiner la recherche Interroger des sources externes
Delayed Lactogenesis II is Associated With Lower Sleep Efficiency and Greater Variation in Nightly Sleep Duration in the Third Trimester / Theresa Casey in Journal of Human Lactation, Vol. 35, n°4 (Novembre 2019)
Titre : Delayed Lactogenesis II is Associated With Lower Sleep Efficiency and Greater Variation in Nightly Sleep Duration in the Third Trimester Type de document : texte imprimé Auteurs : Theresa Casey, Auteur ; Hui Sun, Auteur ; Helen J. Burgess, Auteur Année de publication : 2019 Article en page(s) : pp.713-724 Langues : Anglais (eng) Catégories : Dossiers médicaux
Indice Masse Corporelle
LactogénèseMontée de lait
Résumé : "Background:
Metabolic and hormonal disturbances are associated with sleep disturbances and delayed onset of lactogenesis II.
The aim of this study was to measure sleep using wrist actigraphy during gestation weeks 22 and 32 to determine if sleep characteristics were associated with blood glucose, body mass index, gestational related disease, delayed onset of lactogenesis II, or work schedule.
Demographic data were collected at study intake from primiparous women who wore a wrist actigraph during gestation weeks 22 (n = 50) and 32 (n = 44). Start and end sleep time, total nighttime sleep, sleep efficiency, wake after sleep onset, and sleep fragmentation were measured. Night to night variability was assessed with the root mean square of successive difference. Blood glucose levels, body mass index, and gestational disease data were abstracted from medical charts. Timing of lactogenesis II was determined by survey.
Between gestation week 22 and 32, sleep efficiency decreased and fragmentation increased (p < .05). During gestation week 32, blood glucose was negatively correlated with sleep duration, and positively related to fragmentation (p < .05). Women who experienced delayed lactogenesis II had lower sleep efficiency and greater fragmentation (p < .05), and greater night-to-night variability in sleep start and end time, efficiency, and duration during gestation week 32 (p < .05).
Women with better sleep efficiency and more stable nightly sleep time are less likely to experience delayed onset of lactogenesis II. Interventions to improve sleep may improve maternal health and breastfeeding adequacy."[Résumé de l'auteur]
in Journal of Human Lactation > Vol. 35, n°4 (Novembre 2019) . - pp.713-724[article]Initiation of lactation in women after preterm delivery / MD Cregan in Acta Obstetricia et Gynecologica Scandinavica, Vol.81 n°9 (Septembre 2002)
Titre : Initiation of lactation in women after preterm delivery Type de document : texte imprimé Auteurs : MD Cregan, Auteur ; TR De Mello, Auteur ; D Kershaw, Auteur Article en page(s) : pp.870-877 Langues : Anglais (eng) Catégories : Accouchement prématuré
Composition du lait
LactogénèseMontée de lait
Index. décimale : PH.1.1 Lactation Résumé : BACKGROUND: Lactogenesis II describes the onset of copious milk secretion, and the success of lactogenesis II has been determined in women by measuring the changes in the composition of mammary secretion in the immediate postpartum period. AIM AND METHODS: Therefore, the aim of this study was to determine the success of lactogenesis II at day 5 postpartum in women expressing milk for their preterm infants (n = 22) by measuring the lactogenesis II markers (milk citrate, lactose, sodium and total protein) and comparing them with women breastfeeding full-term infants (n = 16). RESULTS: There were no significant differences between the means (+/- SD) of the lactogenesis II markers for preterm (4.3 +/- 0.7 mM; 147 +/- 10 mM; 12 +/- 6 mM; 14.0 +/- 1.5 g/l, respectively) and term (3.4 +/- 1.4 mM; 126 +/- 17 mM; 30 +/- 13 mM; 15.3 +/- 2.5 g/l, respectively) women. However, variation about the mean was greater in preterm women (coefficient of variation for citrate, 40%; lactose, 14%; sodium, 42%; and total protein, 17%) compared with term women (17%, 7%, 33%, and 10%, respectively). All lactogenesis II markers were within 3 SD from the means for the term women and thus these women were considered to have successfully initiated their lactation. Only 18% of preterm women had all four lactogenesis II markers within 3 SD from the mean for term women. The remaining 82% of preterm women had at least one of the markers of lactogenesis II at pre-initiation concentrations (36% had 1 marker, 32% had 2 markers, and 14% had 3 markers). Furthermore, these women had significantly lower 24-hr milk production than those preterm women that had all four markers within 3 SD from the mean of the term women. CONCLUSIONS: It was concluded that 82% of preterm women had a compromised initiation of lactation, and this was not uniform in all women. Permalink :
in Acta Obstetricia et Gynecologica Scandinavica > Vol.81 n°9 (Septembre 2002) . - pp.870-877[article]Maternal and fetal stress are associated with impaired lactogenesis in humans / KG Dewey in Journal of Nutrition, Vol.131 ([01/01/2001])
Titre : Maternal and fetal stress are associated with impaired lactogenesis in humans Type de document : texte imprimé Auteurs : KG Dewey, Auteur Article en page(s) : pp.3012-3015 Langues : Anglais (eng) Catégories : LactogénèseMontée de lait
Index. décimale : PH.1.3 Stress Résumé : Studies in animals indicate that various types of stressful stimuli can depress lactation, but there is much less information in humans. Experimental studies in breastfeeding women have shown that acute physical and mental stress can impair the milk ejection reflex by reducing the release of oxytocin during a feed. If this occurs repeatedly, it could reduce milk production by preventing full emptying of the breast at each feed. Prospective observational studies indicate that both maternal and fetal stress during labor and delivery (e.g., urgent Cesarean sections or long duration of labor in vaginal deliveries) are associated with delayed onset of lactation. The effects of chronic emotional stress on lactation are not known. Mothers who experience high levels of stress during and after childbirth should receive additional lactation guidance during the first week or two postpartum. Permalink :
in Journal of Nutrition > Vol.131 [01/01/2001] . - pp.3012-3015[article]Maternal perception of the onset of lactation is a valid, public health indicator of lactogenesis stage II / Donna J. Chapman in Journal of Nutrition, Vol.130 n°12 (Décembre 2000)
Titre : Maternal perception of the onset of lactation is a valid, public health indicator of lactogenesis stage II Type de document : texte imprimé Auteurs : Donna J. Chapman, Auteur ; R Pérez-Escamilla, Auteur Année de publication : 2000 Article en page(s) : pp.2972-2980 Langues : Anglais (eng) Catégories : Accouchement compliqué
LactogénèseMontée de lait
Index. décimale : PH.1.1 Lactation Résumé : Test weighing is the "gold standard" for documenting lactogenesis stage II. However, this method is impractical for use in population studies. Maternal perception of the timing of the onset of lactation may be a useful proxy for lactogenesis stage II. This study seeks to validate maternal perception of the onset of lactation as a marker of lactogenesis stage II. Women (n = 60) were recruited after cesarean delivery. Beginning at 24 h postpartum (pp), the onset of lactation was assessed 3 times daily by both test weighing and maternal perception. Delayed onset of lactation was defined as follows: 1) milk transfer < 9.2 g/feeding at 60 h pp and 2) maternal perception >/= 72 h pp. Misclassification analyses were conducted. Multivariate logistic regression, bivariate analyses and Cox survival analyses were used to evaluate the determinants and consequences of delayed onset of lactation, using both definitions. The sensitivity and specificity of delayed maternal perception as an indicator of delayed lactogenesis were 71.4 and 79.3%, respectively. Four risk factors for low milk transfer were significant (P: < 0.05) or nearly significant (P: = 0.08) predictors of delayed perception of the onset of lactation. The effects of low milk transfer and delayed maternal perception on breast-feeding duration were similarly modified by intended breast-feeding duration. The magnitude and directionality of the ss coefficients for the milk transfer and perception variables were consistent. On the basis of these results, we conclude that maternal perception of the onset of lactation is a valid public health indicator of lactogenesis stage II. Permalink :
in Journal of Nutrition > Vol.130 n°12 (Décembre 2000) . - pp.2972-2980[article]n°7 - Printemps 2017 (Bulletin de Hot Milk)
[n° ou bulletin]
est un bulletin de Hot Milk
Titre : n°7 - Printemps 2017 Type de document : texte imprimé Année de publication : 2017 Langues : Français (fre) Catégories : Démarrage de l'allaitement
Développement de l'enfant
LactogénèseMontée de lait
Note de contenu : Sommaire :
- Quoi de neuf ?
Actus lactées ; Le saviez-vous ?
L'avis de la sage-femme (C. Dalla Lana) : comment gérer la monter de lait ?
- Reportage : les mythes
- Il était une fois : la tétine
- Bon plan : les sites web incontournables sur l'allaitement
- A boire et à manger : la diversification sensorielle ; 1. La découverte
- Dossier : accoucher naturellement
- Le coin des papas
Permalink : [n° ou bulletin]
RéservationRéserver ce document
Code-barres Cote Support Localisation Section Disponibilité 00153 PER Revue IPA Périodiques DisponibleObesity as a Predictor of Delayed Lactogenesis II / Irma Preusting in Journal of Human Lactation, Vol. 33, n°4 (Novembre 2017)
PermalinkPhysiology and endocrine changes underlying human lactogenesis II / MC Neville in Journal of Nutrition, Vol.131 ([01/01/2001])
PermalinkPlus de lait / Diana West
PermalinkLes seins dévoilés in Hot Milk, n°6 (Hiver 2016)
PermalinkThe Breastfeeding Mother's Guide to Making More Milk / Diana West
PermalinkValidity and public health implications of maternal perception of the onset of lactation: an international analytical overview / R Pérez-Escamilla in Journal of Nutrition, Vol.131 n°11 (Novembre 2001)
PermalinkVol. 35, n°4 - Novembre 2019 (Bulletin de Journal of Human Lactation)