title: Single-dose methotrexate: an expanded clinical trial.
abstract: OBJECTIVE
  Our purpose was to report an expanded clinical trial with a nonlaparoscopic approach to ectopic pregnancy diagnosis combined with single-dose intramuscular methotrexate treatment.
  
  
  METHODS
  A prospective cohort of 120 women with an ectopic pregnancy < or = 3.5 cm in greatest dimension was enrolled.
  
  
  RESULTS
  Patients had a mean age of 26.1 +/- 6.2 years, a mean gravidity of 3.2 +/- 1.6, and a mean parity of 0.97 +/- 1.0. The mean human chorionic gonadotropin titer before treatment initiation was 3950 +/- 1193 mIU/ml. Transvaginal ultrasonography visualized cardiac activity in 14 (11.7%) patients, with an ectopic mass visualized in 113 (94.2%). The mean time to resolution in the 113 (94.2%) subjects successfully treated was 35.5 +/- 11.8 days. Four (3.3%) patients required a second methotrexate dose on day 7. No biochemical or clinical side effects occurred. Posttreatment hysterosalpingograms demonstrated tubal patency on the ipsilateral side in 51 of 62 (82.3%) patients. Of those attempting pregnancy, 79.6% were pregnant, 87.2% intrauterine and 12.8% ectopic. The mean time to achieve pregnancy was 3.2 +/- 1.1 months.
  
  
  CONCLUSIONS
  This regimen requires minimal laboratory follow-up and eliminates leukovorin recovery, making it the regimen of choice for medical treatment of unruptured ectopic pregnancy.
authors.affiliation: Department of Obstetrics and Gynecology, University of Tennessee, Memphis.
authors.forename: T G
authors.initials: TG
authors.lastname: Stovall
authors.forename: F W
authors.initials: FW
authors.lastname: Ling
mesh_terms: D000293:Adolescent; D000328:Adult; D006063:Chorionic Gonadotropin / Q000097:blood; D005260:Female; D006801:Humans; D007273:Injections, Intramuscular; D008727:Methotrexate / Q000008:administration & dosage* / Q000627:therapeutic use; D011247:Pregnancy; D011274:Pregnancy, Tubal / Q000097:blood / Q000000981:diagnostic imaging / Q000188:drug therapy*; D014463:Ultrasonography
chemical_list: D006063:Chorionic Gonadotropin; D008727:Methotrexate