The 1st balloon valvuloplasty: an historical note

Area of Science:

• Veterinary Cardiology
• Interventional Cardiology
• Comparative Medicine

Background:

• Pulmonic stenosis is a serious heart condition affecting both humans and canines.
• Balloon valvuloplasty (BV) is the preferred treatment for pulmonic stenosis.
• Prior to human trials, canine models were essential for establishing procedural safety and efficacy.

Observation:

• A critical safety and efficacy test for human balloon valvuloplasty was conducted in 1980 on an English Bulldog with pulmonic stenosis.
• The bulldog had an unrecognized anomalous left coronary artery (CA), a known risk factor for fatal outcomes in the breed during cardiac procedures.
• A smaller balloon was intentionally used during the test procedure.

Findings:

• The initial balloon valvuloplasty (BV) procedure in the English Bulldog was successful, despite the presence of an anomalous left coronary artery (CA).
• The use of a smaller balloon prevented fatal disruption of the anomalous left CA, which has been observed in subsequent cases.
• This successful test paved the way for the first human BV procedure in 1982.

Implications:

• The successful canine trial was crucial for the approval and subsequent widespread adoption of balloon valvuloplasty in human pediatric cardiology.
• This veterinary intervention study highlights the importance of animal models in advancing human medical procedures.
• The findings underscore the need for careful consideration of coronary anatomy in bulldogs undergoing BV, even with smaller balloons.