“…In our series, we used postoperative chest drains in early years (17 infants), but this was eliminated later to simplify the postoperative nursing care, safety, and comfort for the patient. The reported residual ductal patency rate on auscultation is 3–5%; 17,24,25 in our study, there was no postoperative ductal patency, which was confirmed by the absence of the murmur. Thus, we had 100% successful clinical closure of the ductus with the two described techniques.…”