title: Occult pregnancy. A pilot study.
abstract: As used herin, the term "occult pregnancy" is defined as a pregnancy which aborts so early that no clincial suspicion of its existence arises except perhaps that there has been a few days' delay in the onset of an otherwise normal menstrual period. Sixteen Clomid-induced ovulatory cycles as evidenced by biphasic temperature charts with hyperthermic phases of 12 days or more were studied. Of these, 10 had serum luteinizing hormone values in the late luteal phase normal for that part of the cycle (6-16 mIU/ml) and six, or 37.5% showed values sufficiently elevated (more than three standard deviations) to indicate a cross reaction with human chorionic gonadotropin and hence the presence of an otherwise unsuspected pregnancy. All had clinically normal menstrual periods 12 hours to 6 days later. The clinical significance of this finding is discussed.
mesh_terms: D000022:Abortion, Spontaneous; D001831:Body Temperature; D002996:Clomiphene / Q000627:therapeutic use; D005260:Female; D006801:Humans; D007247:Infertility, Female / Q000188:drug therapy; D007986:Luteinizing Hormone / Q000097:blood*; D008598:Menstruation; D009839:Oligomenorrhea / Q000188:drug therapy; D010061:Ovulation Detection; D011085:Polycystic Ovary Syndrome / Q000188:drug therapy; D011247:Pregnancy; D011258:Pregnancy Tests
chemical_list: D002996:Clomiphene; D007986:Luteinizing Hormone