Use of autologous pericardial patch graft for treatment of large congenital peritoneopericardial diaphragmatic hernia in two cats.

Peritoneopericardial diaphragmatic hernia is a congenital structural anomaly that results in a communication between the pericardial sac and the peritoneal cavity. About 50% of cats are asymptomatic at the time of diagnosis, and the remaining animals may show respiratory (dyspnoea, tachypnoea, exercise intolerance), gastrointestinal, cardiac tamponade or non-specific clinical signs. Median celiotomy for herniorrhaphy without tension (primary closure, muscle flaps, synthetic mesh, pericardium) is the treatment of choice for symptomatic patients. Two cats were referred with respiratory signs, secondary to a peritoneopericardial diaphragmatic hernia. A pericardial patch graft was obtained and sutured to the diaphragm as an alternative technique to close the large defect and not cause excessive tension on the diaphragm and caval foramen. Patients recovered well without any complications after surgery. Re-examination and thoracic radiographs at 1 week, 2 weeks, 3 months, 6 months and 3 years postoperatively showed no signs of recurrence and the patients remained asymptomatic. [ABSTRACT FROM AUTHOR]