SMA is generally referred to as spinal muscular atrophy; amniocentesis can be done between 16 and 24 weeks of pregnancy if you want to check if your fetus has this disease.
Spinal muscular atrophy is an autosomal recessive disease; it develops when the fetus acquires a recessive gene from both parents; the main manifestation of the disease is progressive, symmetrical widespread muscle paralysis and atrophy mainly in the proximal limbs.
Amniocentesis requires the extraction of about 20 milliliters of amniotic fluid to check whether the fetus has chromosomal abnormalities; if a more comprehensive genetic test is done, the results will be available in about a month.
After receiving the results of amniocentesis, the patient is advised to consult a professional obstetrician; if it is clear that the fetus has spinal muscular atrophy, the correct treatment can be chosen under the guidance of the doctor.