<prompt> Which of the following congenital cardiovascular malformations is most commonly associated with maternal rubella infection?Isolated dextrocardiaPatent ductus aeriosusPersistent truncus aeriosusCoarctation of the aoa  <response>: Patent ductus aeriosus PDA is the most common congenital cardiac malformation associated with rubella infection of the mother. It is unclear how the rubella virus acts to cause PDA. RUBELLA:-PDApulmonary stenosis 