Comparing abortion induced with methotrexate and misoprostol to methotrexate alone.

Abstract:

:This was a dual-cohort study performed to determine if, by using methotrexate alone, abortions could be induced with fewer side effects, without sacrificing effectiveness and patient satisfaction. The subjects were 358 consecutive patients who requested elective medical termination of pregnancy at < 7 weeks gestation. Women were given information and allowed to choose between methotrexate alone (50 mg/m2 intramuscularly) or methotrexate followed 4 days later by 800 micrograms misoprostol vaginally. The two groups were compared with respect to the number of surgical aspirations required, the number of days until the abortion was completed, side effects, and the number of women who would choose the same method again. The surgery rate for methotrexate was 17.2%, whereas for the combination it was 10.9%. The mean numbers of days until the abortion were complete was 23 and 12, respectively. Side effects, mean pain scores, total days of bleeding, and satisfaction rates were not significantly different in the two groups. The high failure rate with methotreaxate alone suggests that it should not be offered despite the high level of satisfaction. :A dual-cohort study was conducted to determine whether abortion induced by methotrexate alone produces fewer side effects than a misoprostol-methotrexate regimen without sacrificing efficacy. 358 consecutive Canadian abortion seekers with pregnancies of 7 weeks' gestation or less were given the choice of a regimen of 50 mg/sq. m of intramuscular methotrexate or methotrexate followed 4 days later by 800 mcg of vaginal misoprostol. 101 women chose the former and 257 opted for the latter regimen. Women tended to choose the methotrexate-only regimen to avoid misoprostol-related side effects; selection of the combination was motivated by a desire for a rapid pregnancy termination. 82 women (82.8%) in the methotrexate-only group and 228 (89.1%) in the combination group aborted successfully. The failure rate in both groups was significantly higher when the procedure was performed at 6 or more weeks of gestation. It took a mean of 23.1 days from injection to complete abortion in the methotrexate-only group compared with 11.7 days in the methotrexate-misoprostol group. More than half the women had medication-related side effects, primarily nausea, vomiting, and diarrhea, with no significant differences between groups. The mean number of days of bleeding was 9.0 in the methotrexate-only group and 10.1 in the combination group. The mean worst pain score (on an 11-point scale) was 6.4 in the former and 6.1 in the latter group. 91.8% of women in the methotrexate-only group and 90.7% of those in the misoprostol-methotrexate group who successfully aborted stated they would chose the same method again. Given the high failure rate, methotrexate alone should not be offered routinely to abortion seekers. Its use should be reserved for women with very early pregnancies who have relative contraindications for misoprostol.

journal_name

Contraception

journal_title

Contraception

authors

Wiebe ER

doi

10.1016/s0010-7824(98)00146-2

subject

Has Abstract

pub_date

1999-01-01 00:00:00

pages

7-10

issue

1

eissn

0010-7824

issn

1879-0518

pii

S0010-7824(98)00146-2

journal_volume

59

pub_type

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