ABSTRACT
<p>A 69-year-old woman was given a diagnosis of moderate aortic stenosis (AS) associated with congenital bicuspid valve in 2011. In 2014, surgery was indicated because of progression of AS and dilatation of the sinus of Valsalva and ascending aorta. Preoperative contrast-enhanced CT and echocardiography showed the saccular space (2×2 cm) located at the left ventricular outflow tract just below the aortic annulus. At surgery, the saccular aneurysm was located just below the aortic annulus of the noncoronary cusp. We resected the aneurysm and closed the orifice with interrupted sutures from the inside of the LV and the outside. Aortic subannular left ventricular aneurysm is a very rare malformation with only 25 reported cases and its natural course is largely unknown. Rupture of aneurysms, infection, thrombus formation, arrhythmia, and heart failure etc. has been reported as complications. We reported a case of aortic subannular left ventricular aneurysm with bicuspid aortic valve stenosis with a literature review.</p>
ABSTRACT
The early and mid-term survival after thoracic aortic surgery and the influence of age on operative mortality were examined in 93 consecutive patients from August 1994 to June 1999, together with assessment of postoperative quality of life (QOL). The mean age was 63.8±11.6 years old (range 26 to 84 years) and 65 patients were male. Aneurysms were atherosclerotic in 43 patients and aortic dissection was present in 50. Forty-eight (52%) required emergency operation. Operative procedures consisted of ascending aorta or hemiarch replacement in 23 patients, Bentall's operation was performed in 4, total arch replacement in 31, distal arch replacement in 9, descending aorta replacement in 13, replacement of the thoracoabdominal aorta in 6, and patch repair in 7. These patients were divided into two groups: the under 70 group (Y group, <i>n</i>=61) and the 70 or older group (O group, <i>n</i>=32). Current QOL of the survivors was assessed using the Asanoi method with a mailed questionnaire. There were 13 early deaths (14%). There were 10 late deaths (5.6%/P-Y (Patients-Years)). The actuarial survival rate of the Y group was significantly higher than that of the O group (<i>p</i>=0.0412). Perioperative stroke was seen in 11% of the Y group and 16% of the O group. These patients had a high mortality rate (Y group 43%, O group 100%) during early and long term follow-up periods. The postoperative NYHA category and exercise ability of the O group were better than those of the Y group. We obtained satisfactory answers concerning the results of operation in the majority of current survivors. Patients aged 70 years and older could undergo thoracic aortic surgery with reasonable risk. QOL following operation was satisfactory except in patients with merged perioperative stroke.
ABSTRACT
A 71-year-old woman with Lutembacher syndrome was admitted for severe congestive heart failure and cardiac cachexia. The preoperative cardiac catheterization showed a huge secundum atrial septal defect (Qp/Qs=3.08) with mitral valve stenosis, tricuspid valve regurgitation, atrial fibrillation and severe pulmonary hypertension. Patch closure of atrial septal defect, mitral valve replacement (SJM 25mm) and tricuspid annuloplasty (Key's method) were performed. However, she suffered prolonged respiratory failure postoperatively. Enforced alimentation for cardiac cachexia and careful administration for sustained heart failure resuscitated her severe postoperative status. The postoperative cardiac catheterization showed sufficient decrease of pulmonary pressure. Reports of successful surgical correction for Lutembacher syndrome in elderly are extremely rare. This is the oldest case of successful correction for Lutembacher syndrome in Japan. From our experience, the surgical treatment for Lutembacher syndrome should be considered even in elderly patients.
ABSTRACT
The results and surgical techniques were studied in 59 patients who had atherosclerotic lesions in the ascending aorta. Arterial grafting (AG) and sequential grafting for coronary artery bypass grafting (CABG) was used in as many as possible cases and the number of distal anastomoses with AG was 1.3/patient (internal thoracic artery (ITA), 56 anastomoses for 50 patients; gastroepiploic artery (GEA), 17; and inferior epigastric artery, 3). Calcification in the ascending aorta was noted in 26 patients and arterial cannulation was performed via the right axillary artery in 4 patients. Saphenous vein grafts were used for 51 patients and 30 of them required aortic reconstruction for proximal anastomosis. There were 2 hospital deaths (non-cardiac) and no neurological complications. It is difficult to perform CABG in the presence of atherosclerosis in the ascending aorta. However, the right axillary artery cannulation as the site of arterial cannulation and the use of sequential grafting, using ITA and GEA as the pedicled arterial conduits are useful to accomplish CABG in such patients. Neurological complication seems to be manufactured at a minimal level by cautious operative techniques.
ABSTRACT
Postoperative cardiac function, changes of LV wall motion and exercise tolerance test were studied in 49 patients who received coronary artery bypass grafting (CABG) using antegrade intermittent warm blood cardioplegia (IWBC) and had postoperative left ventriculography (LVG). The mean aortic cross clamp (ACC) time was 68.2±22.8 minutes, and the coronary perfusion time during ACC was 12.6±6.9 minutes (18.2±7.1% of total ACC time). Spontaneous return of normal sinus rhythm was seen in 45 patients (92%). Perioperative myocardial infarction occurred in only one patient and one patient required inotropic support>5μg/kg/min after operation. The mean cardiac index measured by Swan-Ganz catheter improved postoperatively, and the postoperative LVG revealed improvement of the LV wall motion in comparison with that of preoperative LVG, and no local asynergy due to inadequate distribution of IWBC was seen in the early postoperative period. The mean postoperative exercise tolerance performed in 24 patients was 6.6 METS (metabolic equivalents), and no patient revealed myocardial ischemia at exercise. In conclusion, the IWBC is considered to be an easy and safe technique for distal anastomoses of CABG with no influence upon the postoperative cardiac function and LV wall motion.