We don't know: In most cases tetralogy of fallot is thought to be "multifactorial", meaning that there are possibly genes, and also environmental factors which might increase a child's potential of having the defect.
Answered 9/23/2016
5.8k views
Multiple factors: It is still unclear what causes tof. There are both genetic and environmental factors that appear to increase the risk: poor maternal nutrition; alcohol consumption; maternal age > 40; maternal diabetes; maternal rubella; genetic disorders/syndromes (down syndrome or digeorge syndrome); parent or previous child with tof; maternal pku; maternal use of fluconazole, tegretol, or dilantin.
Answered 10/26/2013
4.8k views
A doctor has provided 1 answer
6 doctors weighed in across 3 answers
A doctor has provided 1 answer
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question