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  • Title: Intravaginal use of natural micronised progesterone to prevent pre-term birth: a randomised trial in India.
    Author: Majhi P, Bagga R, Kalra J, Sharma M.
    Journal: J Obstet Gynaecol; 2009 Aug; 29(6):493-8. PubMed ID: 19697195.
    Abstract:
    In a prospective, randomised trial, 100 pregnant women with >/= one prior spontaneous pre-term birth were randomised into two groups. Group 1 women received 100 mg natural micronised progesterone intravaginally once daily from 20-24 weeks' gestation until 36 weeks. Group 2 women did not receive progesterone. Both groups were regularly supervised until delivery. Pre-term birth (<37 and <34 weeks) and other maternal, neonatal outcomes were primary and secondary outcomes, respectively. Chi-square test and Fisher exact test were used to compare categorical variables. Independent sample t-test and one-way ANOVA were used to compare continuous variables and multiple comparisons, respectively. Pre-term births <37 weeks were significantly lower in Group 1 (12% vs 38%, p = 0.002), but pre-term births <34 weeks were similar. The mean birth weight of neonates born to women in Group 1 was significantly higher (2800 vs 2,500 g, p = 0.023). We concluded intravaginal administration of 100 mg of natural micronised progesterone significantly reduced the incidence of pre-term birth <37 weeks in women with > or = one prior pre-term birth. Future research is warranted to assess the long-term safety and efficacy of progesterone.
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