Résumé
Between March 1976 and February 1996, 17 patients underwent surgical treatment for cardiac myxomas. There were 5 men and 12 women with a mean age of 55 years (range: 22 to 78 years). The location was the left atrium in 13, right atrium in 2, right ventricle in 1 and multiple locations in 1. Since 1978 the standard operative method to treat left atrial myxoma has been a biatrial approach with complete removal of cardiac myxoma and partial resection of the atrial septum. There were no perioperative deaths, but 1 patient had a permanent pace-maker implantation, 2 had transient atrial fibrillation during the early postoperative period, and 1 had acute pulmonary edema after resection of a right ventricular myxoma. There were two late deaths, not related to cardiac event and one recurrence with multiple myxomas. Overall with long term follow-up, the actual survival rate at 10 years was 75% (<i>n</i>=6), with a mean follow-up of 7.1 years, with a 100% follow-up ratio (17 patients). We conclude that the biatrial approach with complete removal of the left atrial myxomas and partial resection of the atrial septum is one of the best procedures for surgical treatment.
Résumé
We evaluated 13 patients (4 men & 9 women, mean age: 61 years-old) who required steroid treatment for more than 1 month before open heart surgery. The subjects included 3 patients with collagen diseases, 3 with dermatopathy, 2 with bronchial asthma, one each with Takayasu's disease, autoimmune hemolytic anemia, paroxysmal nocturnal hemoglobinuria, brain tumor and post-renal transplantation. Surgical procedures were performed with an AC bypass in 9 cases, one each with AVR, MVR, reMVR and ASD patch closure. The steroid treatment before open heart surgery had been continued for a mean of 4 years and 11 months at a mean dose of 9.4mg/day equivalent of prednisolone. We evaluated the adrenocortical function on the rapid ACTH test and found hypoadrenalism in 5 of 8 cases (63%). In these cases we gave either 100mg of hydrocortisone or 1, 000mg of methylprednisolone before open heart surgery. The total perioperative dosage of steroid was a mean of 2, 488mg equivalent of prednisolone, including 4mg/kg of betamethasone during the extra corporeal circulation. Postoperatively we lost one case due to ventricular rupture after MVR. Other major complications were seen in one case each, cardiac tamponade, temporary clamp, wound infection and lumbar vertebral fracture. For steroid treated patients, it is important to select the patient who really need steroid by the rapid ACTH test, and to use the minimum dosage of steroids in open heart surgery.
Résumé
A 65-year-old woman was admitted with a diagnosis of unstable angina after PTCA. She was diagnosed with acromegaly 8 years ago. She underwent an emergency coronary artery bypass grafting (LITA-LAD, SVG-HL-Cx). Serum growth hormone (GH) levels were 65.5ng/ml (normal limit<5ng/ml) before the operation. During a cardiopulmonary bypass GH levels elevated to 92.7ng/ml, but decreased to 15.9ng/ml after the operation. After 3 postoperative days GH levels increased gradually again and blood sugar levels became unstable. Finally it was necessary to increase the dose of bromocriptine. To our knowledge, there are only a few patients who have undergone coronary artery bypass grafting associated with acromegaly. This case suggests it is important to control GH levels at the operation and during the postoperative period.