Fant dette etter et Google søk om 5mm embryo og MA:
By TVS, fetal heart motion should be seen 100% of the time when the fetal pole reaches 5 mm; absence of fetal heart motion at this stage is a strong indication of missed abortion. By transabdominal scan (TAS), fetal heart motion should be seen when the fetal pole reaches 12 mm. The reliability of TAS can be compromised by maternal obesity, obscuring leiomyomas, and retroversion.20
By TVS, fetal heart motion should be seen 100% of the time when the fetal pole reaches 5 mm; absence of fetal heart motion at this stage is a strong indication of missed abortion. By transabdominal scan (TAS), fetal heart motion should be seen when the fetal pole reaches 12 mm. The reliability of TAS can be compromised by maternal obesity, obscuring leiomyomas, and retroversion.20
du har helt rett, kan jo uansett ikke gjøre noe fra eller til heller - men så leter man jo etter håp og svar da,blir jo nesten gal av det!
Desverre er det ingen fasit før over helgen 
