An uncorrected PDA may lead to congestive heart failure with increasing age. The ductus arteriosus is a fetal blood vessel that closes soon after birth. In a PDA, the vessel does not close and remains patent (open), resulting in irregular transmission of blood between the aorta and the pulmonary artery.n uncorrected PDA may lead to congestive heart failure with increasing age. The ductus arteriosus is a fetal blood vessel that closes soon after birth. In a PDA, the vessel does not close and remains patent (open), resulting in irregular transmission of blood between the aorta and the pulmonary artery.
After the large Revere family left the house, it was used as a shop and a tenement for 19th-century Irish, Jewish and Italian immigrants to Boston. In 1902, Revereâs great-grandson purchased the building to ensure its longevity. By 1908 the Paul Revere House had opened as one of Americaâs first historic house museums.
The oldest museum in Australia is built on the ruins of the house of the country's first governor-general, Governor Phillip. The original house was built in 1788 and exposed by archaeologists in the 1980s.