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Pulmonic balloon valvuloplasty in a Chihuahua

Pulmonic balloon valvuloplasty in a 5 year old Chihuahua with severe pulmonic stenosis. This minimally invasive procedure is indicated to reduce the risk of abnormal heart rhythms and heart failure, or even sudden death.

The angiogram (contrast injection) shows a valvar stenosis, with severe right ventricular hypertrophy and a large post-stenotic dilation of the main pulmonary artery. The initial inflation with a 12mm x 3cm balloon leads to a loss of the “hour-glass” appearance of the stenotic valve. A subsequent inflation of the same balloon, and then a larger 14mm balloon shows no residual waist. Pull-back pressures through the right heart show a mild pressure gradient across the valve, suggesting a successful procedure. The dog recovered well from the procedure.

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