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Patent ductus arteriosis (PDA) and secondary pulmonic insufficiency in a 1 year old FI Yorkshire Terrier

Patient Information

Age
1 Year
Gender
Female, Intact
Species
Canine

Keywords

Clinical Signs

Images

Image 1: On this short axis view, at approximately 7 o'clock, a large PDA can be seen entering the main pulmonary artery.
Image 2: Severe turbulence in the pulmonary artery is seen on this short-axis Doppler view.
Image 3: Pulmonary artery insufficiency seen in continuous wave Doppler.

History

A 1-year-old intact female Yorkshire terrier was presented for evaluation of a grade V/VI left-sided heart murmur.

Clinical Differential Diagnosis

Congenital defect - PDA, atrial septal defect (ASD), ventricular septal defect (VSD), aortic stenosis, tricuspid dysplasia.

Image Interpretation

The right ventricle was of normal size (1/3 diameter of LV), echogenicity and thickness. There was no evidence of dilation or restriction. The right ventricular outflow tract was largely normal; however, the pulmonic valve, even though only slightly thickened, revealed significant insufficiency at 4.3 m/sec. Post-valvular forward flow was largely normal at 1.6 m/sec. However, the deep pulmonary artery (prior to the bifurcation) revealed a large amount of turbulence. Holosystolic flow was noted at 5 m/sec. This appears compensated at this time.

Sonographic Differential Diagnosis

Patent ductus arteriosus. Secondary pulmonic insufficiency, which appears compensated at this time.

Sampling

None

DX

PDA, secondary pulmonic insufficiency

Outcome

The owner was considering surgery to correct the PDA at the time of last communication.

Comments

A referral to a cardiologist would be recommended for potential coil placement or surgical intervention for PDA. 

Videos

Video 1: This efficiency clip starts with a right long axis view then transitions into a short axis view. On this short axis view, at approximately 7 o'clock, a large PDA can be seen entering the main pulmonary artery.
Video 2: Severe turbulence in the pulmonary artery is seen on this shrot axis Doppler view.