There's a fucking 1st trimester test for this shit. No reason to wait for the fetus to develop a heartbeat before you go all "Oh shit, it has trisomy 18, I need to cut it into little pieces and crush its skull".
Get the test done before the baby has a nervous system and if positive, abort within the legal timeframe to abort.
Ok, let's stop for a hot minute.
https://www.prenatalscreeningontario.ca/en/pso/about-prenatal-screening/trisomy-18.aspx
There's a fucking 1st trimester test for this shit. No reason to wait for the fetus to develop a heartbeat before you go all "Oh shit, it has trisomy 18, I need to cut it into little pieces and crush its skull".
Get the test done before the baby has a nervous system and if positive, abort within the legal timeframe to abort.