Résumé
An 85 year-old woman underwent mitral valve replacement with Carpentier-Edwards PERIMOUNT (CEP) at the age of 72 because of rheumatic mitral stenosis. Thirteen years after its implantation, prosthetic valve dysfunction developed increasingly severe aortic valve stenosis and she underwent double valve replacement. Prolapse was found in one leaflet of the explanted CEP valve, while neither visible calcification nor tear was detected.
Résumé
We report the surgical correction of an incomplete atrioventricular septal defect (AVSD) associated with pulmonary stenosis in a 72-year-old woman. She was given a diagnosis of atrial septal defect at the age of 19, but at that time surgery was not indicated. She had an uneventful pregnancy at age 28. She had received medical treatment for congestive heart failure since the age of 67. Four years later, she was admitted to another hospital due to edema of the leg and retention of massive ascites. After careful and precise evaluation, AVSD was diagnosed, associated with bilateral atrioventricular (AV) valve regurgitation, pulmonary stenosis, atrial fibrillation and significant stenosis of the left anterior descending (LAD) coronary artery. She was referred to our hospital for surgery, and intracardiac repair was determined to be necessary after clinical assessment. Prior to surgery, she underwent percutaneous coronary intervention with a bare-metal stent for an LAD lesion. Under antegrade cold blood cardioplegia and mild hypothermia, we performed closure of the ostium primum atrial septal defect using a heterologous pericardial patch with expanded polytetrafluoroethylene strip, and right side atrioventricular (AV) valvuloplasty and pulmonary valvotomy. The postoperative course was uneventful. The patient has been designated NYHA class I for 2 years since surgery, and has had mild regurgitation of both AV valves, but neither have affected her quality of life. Surgical correction should be considered in elderly patients with incomplete AVSD, even in those aged 70 and over.
Résumé
Cardiac papillary fibroelastoma (CPFE) is a rare tumor, and is usually located in the atrioventricular or ventriculoarterial valves. It is occasionally identified by echocardiography or surgery. It can also be an unexpected finding at autopsy. As this tumor often occurs in left-sided cardiac chambers, early aggressive surgical resection is required in order to prevent severe systemic embolic complications. However, the operative indications of tumors on the right cardiac chamber are controversial. The patient was a 73 year-old man. He had had cerebral infarction at age 58. Before the currently reported operation, we found CPFE on the tricuspid valve but we could not find a patent foramen ovale (PFO) by the usual examinations. During surgery, we found a CPFE on the tricuspid valve that had a short stalk and PFO. We cut the short stalk of the CPFE easily, and closed the PFO directly. This patient did not need complicated valve repair. We speculated that this cerebral infarction was caused by a CPFE on the tricuspid valve and patent foramen ovale. Echocardiography is very useful in diagnosing CPFE. However, we should not neglect the possibility of PFO before surgery. The postoperative course was uneventful. We concluded that early surgical resection of CPFE, even in right-sided cardiac chambers, should be performed in order to prevent severe embolic complications, even without PFO diagnosis.
Résumé
We experienced 2 cases of accessory mitral valve tissue (AMVT). Case 1 : A 56-year-old man was admitted with aortic regurgitation. Transthoracic and transesophageal echocardiography revealed AMVT with no left ventricular outflow tract obstruction. The patient underwent a successful aortic valvuloplasty. AMVT was carefully excised, because we suspected AMVT might be the cause of recurrent aortic regurgitation and left ventricular outflow tract obstruction with aging. Case 2 : A 63-year-old woman was admitted with mitral regurgitation due to infective endocarditis. During medical treatment, transthoracic and transesophageal echocardiography revealed membranous structure in the left atrium uneffected by antibiotics. Mitral valvuloplasty and resection of membranous structure was performed. The membranous structure was not vegetation and had no relationship to mitral regurgitation. Pathological examination proved AMVT. To our knowledge, this is the first report of AMVT in left atrium in an adult.
Résumé
A 22-year-old man with dilated cardiomyopathy (DCM), who was a practicing Jehovah's Witness, was transferred to our hospital for surgical treatment of medically uncontrollable mitral regurgitation (MR). Our original mitral complex reconstruction procedure and permanent pacemaker implantation for biventricular pacing were successfully performed without transfusion of blood products. Blood conservation strategy included: 1) preoperative treatment with erythropoietin, 2) utilization of a shortened extracorporeal circuit and assisted venous drainage system, 3) the use of ultrafiltration to save the residual autoblood in the extracorporeal circuit. The preoperative hemoglobin level was 17.1g/dl and the postoperative lowest level was 9.5g/dl. MR decreased from grade III to none, and NYHA functional class improved from class II to class I postoperatively. He was moved to a cardiology ward on the 13th postoperative day without complications. Transfusion-free surgery for DCM should be performed before DCM advances and requires left ventriculoplasty at risk for major blood loss. A careful follow-up is needed to examine the long-term results of the operative procedure during his expected long survival.
Résumé
A 70-year-old man was given emergency admission with severe back pain. Computer tomography revealed type-B acute aortic dissection with a distal aortic arch aneurysm which was 69mm in diameter. The dissection extended from the distal portion of the aneurysm to right external iliac artery, and the false lumen was patent. The right renal artery arose from the false lumen. He was treated conservatively according to the guidelines of AHA, and later we performed total arch replacement electively for the aortic arch aneurysm. Distal anastomosis was applied using the elephant trunk method for reconstruction of only the true lumen. Postoperative computer tomography showed the false lumen was closed in the descending thoracic aorta, but patent below the level of the celiac artery. He was discharged without any complications. Cases of acute aortic dissection coexisting with atherosclerotic thoracic aortic aneurysm are rare. However, with the increase of the elderly population, vascular diseases will become more complicated. Strategy for therapy and operation should be considered carefully especially in such cases with multiple vascular diseases.