How big should the gestational sac be suitable for medication abortion?

Patient's question:

I used to think that taking some medicine was enough to have a miscarriage, but now I've realized that in some cases, medication abortion is not suitable. What size of gestational sac is suitable for medication abortion?

Doctor's answer:

Hello, there is a time-related impact on medication abortion. Generally, it is mainly based on the duration of missed periods. It is recommended that the missed period duration should not be less than 49 days. Additionally, it is possible to combine this with an ultrasound examination for a more thorough check. Usually, a gestational sac size within 2.0 centimeters is suitable for medication abortion. It is also important to note that medication abortion does not have a 100% success rate. Therefore, it is necessary to have an ultrasound follow-up examination at the hospital after medication abortion to rule out any residual tissue in the uterine cavity.

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