Creighton Model FertilityCare™ System (CrMS) & NaProTECHNOLOGY® for progesterone support during pregnancy

Progesterone support in pregnancy has been in use for nearly sixty years. Its initial use was in patients who had habitual miscarriages caused by a luteal phase deficiency.  Luteal phase deficiency is due to a failure of the function of the corpus luteum in the production of progesterone. Evidence supports that progesterone given in early pregnancy may be useful in some women with recurrent miscarriage and that the measurement of serum progesterone levels in early pregnancy can help to determine the need for progesterone support throughout pregnancy.

The administration of progesterone later in pregnancy is justified because of an observed decrease in circulating progesterone with the onset of labor, and association of premature labor with decreased progesterone concentrations.

In conjunction with estradiol, progesterone has the following important functions:

  • It stimulates the growth of the uterus
  • It causes the lining of the endometrium to mature, converting it to a secretory type
  • It stimulates the decidualization of the endometrium required for implantation
  • It inhibits myometrial contractions

The Pope Paul VI Institute has over 25 years of experience in the use of progesterone support in pregnancy. A thorough discussion of this topic is presented, in detail, in the textbook,  The Medical & Surgical Practice of NaProTECHNOLOGY®

Our medical consultants use the same protocols that have been implemented at the Pope Paul VI institute.