Background: Cardiac myxomas are benign tumors that can occur in any heart chamber or valve.They are extremely rare in dogs.We present a novel case involving a cardiac myxoma in the left ventricular outflow tract (LVOT) and a ventricular septal defect (VSD) in a small dog.
Case Description: A female miniature dachshund (age, 7 months; weight, 2.88 kg) presented with growth insufficiency, lethargy, and a cardiac murmur.Echocardiography revealed a small polypoid mass in the LVOT and a membranous VSD.
Simultaneous surgeries were performed merrick backcountry wet cat food to resect the mass (aortotomy) and close the VSD (right atriotomy) using low-flow cardiopulmonary bypass with surface-cooling hypothermia and retrograde cardioplegia.The tumor was histopathologically identified as a myxoma.The dog survived read more with no cardiac complications for 11 years after surgery.
Conclusion: To our knowledge, this is the first report of ante-mortem diagnosis and simultaneous surgical repair of a cardiac myxoma obstructing the LVOT and a VSD in a small-breed dog.In addition to describing this complicated case, this report presents what we believe is the first reported use of retrograde cardioplegia during open-heart surgery in a small-breed dog.[Open Vet J 2024; 14(2.
000): 743-749].