------------------------------------------------------------------------------- MEDICAL REFERENCES to the use of Methotrexate as an abortifacient (July, 1994) ------------------------------------------------------------------------------- Note: Entries 1 and 3 refer to the same article. 1. Creinin, M. D. and P. D. Darney. 1993. Methotrexate and misoprostol for early abortion. Contraception 48:339-348. KEYWORDS : medical abortion; methotrexate; misoprostol; --hCG; vaginal ultrasound; Abortion; Pregnancy; gestation; Prostaglandin; NOTES : Methotrexate is cytotoxic to trophoblast and, in low doses, has minimal side effects. It is used to treat both gestational trophoblastic neoplasia and ectopic pregnancy. The cytotoxic effects of methotrexate on intrauterine trophoblast should be equivalent. To test this hypothesis, ten pregnant women, < 8 weeks' gestation were treated with methotrexate 50 mg/m2 intramuscularly followed 3 days later by misoprostol, a prostaglandin E1 analogue. The first 4 patients received misoprostol 600 ug orally; none aborted soon after the misoprostol. Two patients aborted 25 and 26 days after the methotrexate injection and two elected a suction abortion after 14 days (one by choice and one because the pregnancy was still viable). The last 6 patients received misoprostol 800 ug vaginally and aborted within 3- 8 hours. One patient had an incomplete abortion requiring a suction curettage 34 days after the misoprostol. Vaginal bleeding for these 6 patients lasted an average of 29 +/- 11 days (range, 12-42 days). No methotrexate side effects were observed. Vaginal misoprostol (800 ug) was significantly more effective (p = 0.005) than oral misoprostol (600 ug) in effecting abortion after intramuscular methotrexate. AUTHOR ------------------------------------------------------------------------------- 2. Buckshee, K. and A. J. Dhond. 1992. A new nonsurgical technique for termination of intrauterine pregnancy associated with large multiple uterine leiomyomas. Int. J. Gynecol. Obstet. 37:297-299. Keywords : abortion; Methotrexate; Intrauterine pregnancy; Leiomyoma; pregnancy; Techniques; termination; ------------------------------------------------------------------------------- 3. Creinin, M. D. and P. D. Darney. 1993. Methotrexate and misoprostol for early abortion. Contraception 48:339-348. Keywords : Methotrexate; misoprostol; Early abortion; abortion; Medical abortion; _-hCG; vaginal ultrasound; pregnancy; gestation; prostaglandin; trophoblast; low dose; side effects; ectopic; ectopic pregnancy; women; first; injection; curettage; oral; Notes : Methotrexate is cytotoxic to trophoblast and, in low doses, has minimal side effects. It is used to treat both gestational trophoblastic neoplasia and ectopic pregnancy. The cytotoxic effects of methotrexate on intrauterine trophoblast should be equivalent. To test this hypothesis, ten pregnant women, < 8 weeks' gestation were treated with methotrexate 50 mg/m2 intramuscularly followed 3 days later by misoprostol, a prostaglandin E1 analogue. The first 4 patients received misoprostol 600 ug orally; none aborted soon after the misoprostol. Two patients aborted 25 and 26 days after the methotrexate injection and two elected a suction abortion after 14 days (one by choice and one because the pregnancy was still viable). The last 6 patients received misoprostol 800 ug vaginally and aborted within 3- 8 hours. One patient had an incomplete abortion requiring a suction curettage 34 days after the misoprostol. Vaginal bleeding for these 6 patients lasted an average of 29 +/- 11 days (range, 12-42 days). No methotrexate side effects were observed. Vaginal misoprostol (800 ug) was significantly more effective (p = 0.005) than oral misoprostol (600 ug) in effecting abortion after intramuscular methotrexate. AUTHOR ------------------------------------------------------------------------------- 4. Creinin, M. D. 1993. Methotrexate for abortion at 42 days gestation. Contraception 48:519-525. KEYWORDS : Methotrexate; abortion; gestation; Medical abortion; _-hCG; vaginal ultrasound; pregnancy; trophoblast; low dose; side effects; ectopic; ectopic pregnancy; early pregnancy; prostaglandin; women; injection; first; Intrauterine pregnancy; NOTES : Methotrexate is cytotoxic to trophoblast and, in low doses, has minimal side effects. It is used to treat gestational trophoblastic neoplasia and ectopic pregnancy and has recently been shown to have similar effects on intrauterine trophoblast. A prior study suggested that methotrexate may successfully cause abortion of an early pregnancy without prostaglandin. To test this hypothesis, ten pregnant women at . 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