In the attached short video you can learn about the ductus arteriosus and its function, what stimulants causes its normal closure and what factors lead to it remaining patent along with the treatment options available to close off the PDA. Timeline: 0:00 - Function of ductus arteriosus 1:45 - Factors behind closure of ductus arteriosus 3:38 - Causes of patent ductus arteriosus (PDA) 4:49 - Manifestations of PDA 7:59 - Treatment of PDA