title: Single injection of methotrexate for treatment of ectopic pregnancies.
abstract: OBJECTIVE
  Our purpose was to evaluate the efficacy of single-dose methotrexate as a treatment option for ectopic pregnancies.
  
  
  METHODS
  Patients were recruited from a tertiary teaching hospital setting. They had (1) a gestational sac < 3.5 cm, (2) no fetal cardiac activity, and (3) no significant pelvic pain or signs consistent with hemoperitoneum. Patients excluded were those who did not desire future fertility or who had evidence of renal or liver disease. Sixty-one patients meeting these criteria were selected and treated with a single intramuscular injection of methotrexate at a dosage of 50 mg/m2.
  
  
  RESULTS
  Of the 61 patients treated, 16 required a second injection and nine required surgical intervention. Fifty-two (85%) were successfully treated as outpatients with methotrexate alone.
  
  
  CONCLUSIONS
  Nonsurgical treatment of ectopic pregnancies with single-dose methotrexate is an option for some patients, but more studies are needed to establish the safety, efficacy, and effect on fertility.
authors: Department of Obstetrics and Gynecology, Methodist Hospital of Indiana, Inc., Indianapolis 46206-1367.
authors: M A
authors: MA
authors: Henry
authors: W L
authors: WL
authors: Gentry
mesh_terms: D006063:Chorionic Gonadotropin / Q000097:blood; D004334:Drug Administration Schedule; D005260:Female; D006801:Humans; D007273:Injections, Intramuscular; D008727:Methotrexate / Q000008:administration & dosage* / Q000627:therapeutic use; D006080:Ovarian Follicle / Q000601:surgery; D010052:Ovariectomy; D011247:Pregnancy; D011271:Pregnancy, Ectopic / Q000188:drug therapy* / Q000601:surgery; D011446:Prospective Studies
chemical_list: D006063:Chorionic Gonadotropin; D008727:Methotrexate