Abstract
Background:
Cardiologists occlud most patent ductus arteriosus (PDA) defects in dogs using the Amplatz® canine duct occluder (ACDO) via a transarterial approach. However, this approach can be problematic in small dogs due to their small femoral artery diameters. In such cases, cardiologists have opted for lower-profile devices or use coils or vascular plugs deployed using a more challenging transvenous approach.

Case Description:
The present report describes a 1 year-old, 6 kg male Cavalier King Charles Spaniel with a small PDA, which was successfully occluded using the Micro Plug Set (KA Medical, Minneapolis, MN, USA) via a transarterial approach

Conclusion:
This is the first case report in medicine of PDA closure with a KA Micro Plug Set. This approach, which has been describedfor PDA closure in a few dozen premature human infants, could be considered as a minimally invasive PDA closure in small dogs by using a transarterial approach. Furthermore, in pediatric cardiology, the use of the device has been described only via a transvenous approach. The information from this case report could inspire a different and simpler approach in human medicine.

Key words: Case report, Micro Plug Set (KA Medical, Minneapolis, MN), Patent ductus arteriosus, Small dogs