Usually, when a woman terminates for fetal deformity she has a choice as to what kind of abortion she may have.
There are two types. Labor and delivery induction, and D&E.
L&D is usually done by your own private ob, if they offer it, and it involves delivering a stillbirth.
Basically, your baby is given an injection of digoxin into the heart to stop its beating, then labor is induced. You deliver an intact baby, which is important to many women dealing with fetal deformities.
D&E is often done in a clinic, but a womans own doctor may offer it as well.
For ANY aboriton procedure, even ones at 6 weeks, a woman can easily be put to sleep for the abortion.
You can be put to sleep for the abortion. Basically, the abortion is done with suction aspiration, much like an early abortion. Suction is used, and curettage is used to ensure all fetal parts are removed.