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Berghella, V., Figueroa, D., Szychowski, J.M., Owen, J., Hankins, G.D., Iams, J.D., Sheffield, J.S., Perez-Delboy, A., Wing, D.A., Guzman, E.R. and Vaginal Ultrasound Trial Consortium (2010) 17-Alpha-Hydroxyprogesterone Caproate for the Prevention of Preterm Birth in Women with Prior Preterm Birth and a Short Cervical Length. American Journal of Obstetrics & Gynecology, 202, 351.e1-e6.
https://doi.org/10.1016/j.ajog.2010.02.019

has been cited by the following article:

• TITLE: Oral Micronized or Parenteral Progesterone versus Health Education in the Prevention of Preterm Birth: A Single Blinded Randomized Controlled Trial

  AUTHORS: Atef M. M. Darwish, Alaa E. M. Ismail, Maher S. Mohammad, Salah A. E. Gobara

  KEYWORDS: Preterm Birth, Oral, Injectable, Progesterone, Health Education

  JOURNAL NAME: Open Journal of Obstetrics and Gynecology, Vol.9 No.5, May 14, 2019

  ABSTRACT: The primary aim of this study was to evaluate the possible prophylactic role of progesterone in women with a history of spontaneous preterm birth (PTB) while the secondary aim was to compare oral or intramuscular progesterone versus health education in such cases. Methods: A randomized, single blinded interventional randomized controlled trial was conducted. It comprised 90 cases with a history of PTB who were divided into 3 equal groups who received oral micronized progestogen capsule 200 mg daily (group A), parenteral 17 α-hydroxyprogesterone caproate 250 mg weekly IM injections (group B) or received health education including rest (group C) starting from 20 weeks till the end of 34 weeks of gestation. Results: This study included eligible 90 pregnant women at high risk of PTB who continued follow-up. For socio-demographic characteristics, there were no significant differences between the groups in respect to age, residence, education level, occupation, gravidity, parity and number of living children apart from significant difference between group A and C regarding mean patients’ age. Mode and place of delivery did not differ between the groups while gestational age at time of delivery was significantly better on using injectable than oral progesterone. Neonatal birth weight was significantly higher in group B if compared separately to groups A and C and was still significantly higher in group A if compared with group C. NICU admission rate was higher in group C if compared to group B or to the combined group A and B. Compliance was significantly higher in group B if compared to both group A and C and was significantly higher in the intervention group A and B if compared to group C. Conclusions: Progesterone supplementation has a significant role in prevention of PTB if compared with just health education. Progesterone injections expressed significantly better results than oral micronized progesterone in terms of prolongation of gestational age, better neonatal birth weight and less admission rate to the NICUs.