Cardiology

Minimally-invasive per-catheter patent ductus arteriosus occlusion in small dogs ≤ 3 kg

Current Status: Enrolling, only 3 spots left!
Principal Investigators: 
Anthony H. Tobias, BVSc, M Med Vet, PhD, DACVIM - Cardiology
Janet Olson, DVM
Contact: 
Dr. Janet Olson, 612-625-0141, chri0148@umn.edu

Patent ductus arteriosus (PDA) is an opening between the pulmonary artery and the aorta that should close when a puppy is born.  When this opening does not close, it interferes with the lung's ability to give oxygen to the blood that flows through the body.  The preferred method for correcting a PDA at the University of Minnesota Veterinary Medical Center (VMC) is via a minimally-invasive catheter procedure and a canine duct occluder. This procedure has been performed successfully in a multitude of cases at the VMC and elsewhere, but has previously been limited to dogs greater than 3 kg in size (6.6 pounds).  Up until now, dogs less than or equal to 3 kg have had to undergo an invasive open chest surgery to have their PDAs closed.  The new duct occluder system has recently been modified for use in dogs ≤ 3 kg.

To enter the study, dogs or puppies must be between 1.5 kg and 3 kg in body weight and be able to undergo anesthesia. An initial exam will be performed at the VMC to have the PDA confirmed.  This exam includes x-rays, an echocardiograph, blood and urine samples.

The procedure will be performed within 3 weeks, under general anesthesia.  Dogs or puppies will stay overnight.  Prior to going home, an exam, x-rays and echocardiograph will ensure the dog is stable.

Finally, a recheck 3-months after the procedure will consist of an exam, x-rays and echocardiography.

The study provides all of the above at no charge, a value more than $2800.00.

See a flyer with more detail: Referring veterinarian and client information sheet

See the college article: Tiny Patient Benefits from Breakthrough Treatment

See the Kare 11 story about fixing a tiny terrier's "broken heart".