Fertility and sterility · 2001
Lactational amenorrhea/anovulation and some of their determinants: a comparison of well-nourished and undernourished women.
Сравнительное исследованиеСтатьяПоддержка исследования: вне правительства СШАНазвание и аннотация: Перевод в очереди
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Wasalathanthri S, Tennekoon K H
Аннотация
OBJECTIVE: To study the effect of maternal nutritional status and some other possible determinants on lactational amenorrhea/anovulation.
DESIGN: Prospective matched-pairs study.
SETTING: Postpartum wards and community and academic settings.
PATIENT(S): Thirty matched pairs of otherwise healthy, well-nourished (body mass index > or = 26.00 kg/m2) and undernourished (body mass index < or = 19.00 kg/m2) postpartum women were selected.
INTERVENTION(S): Infant feeding pattern was recorded weekly, and infant weights, maternal body mass index, and maternal PRL levels were estimated every 4 weeks until resumption of menstruation. Ovulatory activity was determined using urinary estrone and pregnanediol glucuronide concentrations.
MAIN OUTCOME MEASURE(S): Time of resumption of menstruation, regular and ovulatory.
RESULT(S): Well-nourished women resumed regular menstruation significantly earlier than undernourished women but resumed ovulatory menstruation at almost the same time. Undernourished women had fewer anovulatory cycles preceding first postpartum ovulation and a higher prevalence of formula feeding. Effect of body mass index on lactational amenorrhea became nonsignificant when nonintroduction of formula feeds, maternal age, and socioeconomic status were controlled for.
CONCLUSION(S): Improved maternal nutritional status has no significant effect on fertility: ovulation is not advanced despite early resumption of regular menstruation.
DESIGN: Prospective matched-pairs study.
SETTING: Postpartum wards and community and academic settings.
PATIENT(S): Thirty matched pairs of otherwise healthy, well-nourished (body mass index > or = 26.00 kg/m2) and undernourished (body mass index < or = 19.00 kg/m2) postpartum women were selected.
INTERVENTION(S): Infant feeding pattern was recorded weekly, and infant weights, maternal body mass index, and maternal PRL levels were estimated every 4 weeks until resumption of menstruation. Ovulatory activity was determined using urinary estrone and pregnanediol glucuronide concentrations.
MAIN OUTCOME MEASURE(S): Time of resumption of menstruation, regular and ovulatory.
RESULT(S): Well-nourished women resumed regular menstruation significantly earlier than undernourished women but resumed ovulatory menstruation at almost the same time. Undernourished women had fewer anovulatory cycles preceding first postpartum ovulation and a higher prevalence of formula feeding. Effect of body mass index on lactational amenorrhea became nonsignificant when nonintroduction of formula feeds, maternal age, and socioeconomic status were controlled for.
CONCLUSION(S): Improved maternal nutritional status has no significant effect on fertility: ovulation is not advanced despite early resumption of regular menstruation.