Long-term relief of obstruction in a dog with double-chambered right ventricle using combined cutting balloon and high-pressure balloon dilation

Double-Chambered Right Ventricle in an Old Standard Poodle Dog

“…Symptoms are progressive, resulting exercise intolerance, cough, cyanosis, panting, syncope, and sudden death in humans, dogs, and cats (3,7). However, if patients undergo surgery or balloon dilation, the prognosis is good (10,20). In this case, the patient was diagnosed at 12 years of age without significant congestive signs.…”

“…In this case, the patient was diagnosed at 12 years of age without significant congestive signs. The pressure gradient across the ostium was believed to be 18 mmHg, which is much less than that in other cases (3,6,10,20). In humans, when a patient does not present with significant coexisting defects, surgical intervention may not be necessary until a pressure gradient of 40 mmHg is reached (5).…”

“…Treatment options to control this mid-ventricular obstruction include surgical resection, catheter-based procedures, and conservative medical therapy (10,18,20). Of these modalities, surgery is the most successful (10,15,18,19).…”

“…However, availability and affordability are major obstacles for this approach (10,15). Balloon dilation of the obstruction has been tried in several cases (6,10,14,15,20), though not all cases showed the best results. Some patients have favorable longterm results (6,20).…”

“…Balloon dilation of the obstruction has been tried in several cases (6,10,14,15,20), though not all cases showed the best results. Some patients have favorable longterm results (6,20). The medical management of DCRV is almost the same as that of pulmonic stenosis (9,18).…”