[Surgery for WPW syndrome with concomitant CABG: a case report].

A 58-year-old man underwent simultaneous surgery for WPW syndrome complicated by frequent attacks of atrial tachyarrhythmia combined with angina pectoris persisting after anterior myocardial infarction. Repeated PTCA of 3 times failed and restenosis occurred with recurrent angina particularly when atrial tachyarrhythmia took place. The preoperative ECG suggested the presence of a left free wall accessory pathway confirmed by an electro-physiolosical study.

Management of malignant tracheobronchial stenosis with metal stents and Dumon stents.

Background: Tracheobronchial stenosis caused by malignancy is a life- threatening problem. Stenting is one of the treatment modalities and recently has been used widely for the management of such stenosis, but we do not have a clear guide as to which stent should be selected.

Methods: We evaluated 25 patients (19 men, 6 women; mean age, 60.

[Ten-year survival and cardiac event-free rates in Japanese patients with the left anterior descending artery revascularized with internal thoracic artery or saphenous vein graft: a comparative study].

To evaluate the long-term results of surgical patients with coronary artery bypass grafting (CABG), we comparatively analyzed the 10-year survival and cardiac event-free rates between 713 patients group with at least one internal thoracic artery to the left anterior descending artery (LAD), (ITA-CABG) and 241 patients group revascularized with vein grafts alone (SVG-CABG). ITA-CABG patients had more progressed diseases with a higher incidence of risk factors than SVG-CABG patients: number of vessel diseased 2.5 +/- 0.

[Radiation-induced coronary ostial stenosis, a case of redo coronary bypass for the restenosis following patch angioplasty].

The patient was a 45-year-old woman who had had a tumor resection for thymic carcinoid and subsequent mediastinal irradiation (50 Gy) 3 years before the onset of angina pectoris during exercise. Coronary angiography (CAG) revealed an isolated ostial stenosis of the left main coronary trunk (LMT). Angiography also showed an occluded right internal thoracic artery (ITA) at its origin.

[A case of mucoepidermoid carcinoma of the thymus].

A 19-year-old man was admitted to our hospital with anterior mediastinal cystic tumor. Subtotal thymectomy with the tumor was performed. The tumor was localized inside the thymus without outer infiltration.

Brainstem ischemic damage following occlusion of the blood vessels in the rat's posterior cerebral circulation.

Progression of ischemic damage was investigated immunohistochemically in neural dendrites using microtubule-associated protein 2 (MAP2) as a dendritic marker in the rat's brainstem. Neuronal soma and dendrites were clearly stained by this protein but some structures such as axonal bundles, glia and endothelial cells were not visualized. When the anterior inferior cerebellar artery (AICA) was occluded unilaterally for 30 min, a wide ischemic lesion was detected in the occluded side of the brainstem and was observed as a loss of reaction to MAP2.

In vitro study of ablated lung tissue in Nd:YAG laser irradiation.

Background: Neodymium:yttrium-aluminum garnet lasers are used to reduce lung volume. An assessment of the relationship between the histologic and gross findings in the lung irradiated by a laser would be helpful in laser-assisted pneumoplastic procedures.

Methods: In vitro lung lobes surgically resected for pulmonary carcinomas were irradiated with a neodymium:yttrium-aluminum garnet laser at three energy levels in three modes: contact rubbing, contact pointing, and noncontact.

[Konno's operation for residual aortic stenosis following Nick's operation--a case report].

A 43-year-old woman successfully underwent the Konno's operation as a reoperative procedure for residual aortic stenosis following the Nicks' operation. The patient had had congenital valvular and subvalvular aortic stenosis and a patent ductus arteriosus previously divided. At age 33, she had undergone the Nicks' operation (posterior ring enlargement) and aortic valve replacement with a 19 mm Bicer valve prosthesis 9 years 6 months prior to the reoperation.

Effect of warm ischemia and cryopreservation on cell viability of human allograft valves.

Fibroblast viability of the allograft valve leaflet has been suggested to affect clinical durability. Warm ischemic time is thought to be one of the critical determinants of cell viability. We assessed cell viability of allograft valves by flow cytometry, using a fluorescein diacetate-propidium iodide stain to characterize the effects of warm ischemia and cryopreservation on viability.

[Rest and exercise performance of allografts, Bicer valves and St. Jude Medical valves in the aortic position].

Cardiac catheterization was performed to measure pressure gradients and hemodynamic parameters at rest and during supine bicycle exercise in 37 patients with aortic valve replacements, using allograft valves. Bicer prosthetic valves and SJM prosthetic valves of 19 to 27 mm diameter. Fourteen patients had an allograft valve replacement, 17 a Bicer valve, and 6 a St.

[Morphological examination of the lung tissue ablated with Nd;YAG laser in the treatment of bullous pulmonary disease].

We conducted a morphologic examination of ablated pleurae and bullae to assess the efficacy of Nd;YAG laser irradiation to the lung tissue for the treatment of bullous pulmonary disease. Pleurae and bullae from surgically resected lung tissue to treat pulmonary carcinoma were ablated using a Nd;YAG laser at a power of 10 watts and 1.5 seconds within a 1-centimeter-diameter circle (about 0.

Efficacy and limitation of a left ventricular assist system in a patient with dilated cardiomyopathy accompanying multi-organ dysfunction.

A left ventricular assist system (LVAS, Toyobo CO., LTD., Japan) was used to provide life support for 190 days in a 44-year-old male patient with end-stage dilated cardiomyopathy.

Usefulness of interlocking detachable coil for embolization of the major aorto-pulmonary collateral artery: a case report.

A 5-yr-old male had undergone a right-modified Blalock-Taussig shunt operation at the age of 1 mo for stenotic patient ductus arteriosus and pulmonary atresia with ventricular septal defect. Before a corrective operation, the angiogram revealed one large major aorto-pulmonary collateral artery from the descending aorta to the right upper lung. Embolization of the major aorto-pulmonary collateral artery was successfully performed using interlocking detachable coils.

[Surgical repair of bilateral atrioventricular valves in corrected transposition of the great arteries].

The patient was a 50-year-old man who had an SLL-type corrected transposition of the great arteries (C-TGA) accompanied by significant regurgitation of the bilateral atrioventricular valves, atrial septal defect (ASD), persistent left superior vena cava, atrial fibrillation, and ventricular extrasystoles. The systemic tricuspid valve was repaired with a 28 mm Carpentier-Edwards ring (C-E ring) for the mitral valve, while the systemic mitral valve was repaired with a 32 mm C-E ring for the tricuspid valve. Simultaneously, the associated ASD was closed.

Systolic and diastolic function after patch reconstruction of left ventricular aneurysms.

Left ventricular function after patch reconstruction for postinfarction left ventricular aneurysms is largely unknown. In this study, 16 patients with an anteroseptal-lateral left ventricular aneurysm were treated by reconstruction of the left ventricle using a Dacron patch. Coronary artery bypass grafting was performed concomitantly in 9 patients.

ABR findings in brainstem ischemia: occlusion of the left anterior inferior cerebellar artery.

ABR was measured ipsilaterally following permanent left anterior inferior cerebellar artery (AICA) occlusion to assess the discrepancy in recovery between blood flow and function in the rat brainstem. Three types of wave patterns were classified: in type 1, all components disappeared: in type 2, all components disappeared transiently, then re-appeared; and in type 3, only a significant increase in the latency difference between components I-IV was noted. In type 2, we suggest that all components re-appeared because cochlear blood flow was re-established quickly by collateral circulation.

Usefulness of femoro(ilio)-axillar bypass surgery for the treatment of subclavian steal syndrome caused by aortitis syndrome.

In two patients with subclavian steal syndrome associated with aortitis syndrome, retrograde bypass grafting from the femoral or common iliac artery to the axillary artery resulted in the disappearance of symptoms. One patient, a 37-year-old female, was treated with a bypass from the left femoral artery to the left axillary artery with a 10-mm ring-supported double velour knitted Dacron graft. The other patient, a 54-year-old female, with the complication of moderate aortic regurgitation, was treated with a bypass from the left common iliac artery to the left axillary artery with an 8-mm EPTFE graft.

Size-reduced cryopreserved pulmonary valve allograft for an RV-PA conduit: technical modification and functional evaluation.

Cryopreserved pulmonary allografts harvested from adults at the time of kidney donation were size reduced and used in two children with pulmonary atresia and ventricular septal defect. A technical modification for the creation of size-reduced pulmonary allograft conduits is described. Postoperative ultrasonic and cineangiographic assessments revealed excellent function of the pulmonary bicuspid valved conduit with a minimal pressure gradient and essentially no regurgitation.

Auditory brainstem response findings in brainstem ischemia following selective occlusion of the anterior inferior cerebellar artery in the rat.

Auditory brainstem responses (ABRs) were measured ipsilaterally (n = 13) or contralaterally (n = 5) after inducing permanent right and left anterior inferior cerebellar artery (AICA) occlusion. Three types of wave patterns were classified when ABRs were recorded ipsilaterally. In type 1 (n = 4) all components disappeared; in type 2 (n = 2) all components disappeared transiently and then reappeared; and in type 3 (n = 7) only the latency difference between components I and IV increased.

Left atrial plication combined with mitral valve surgery in patients with a giant left atrium.

The benefits of performing left atrial plication during mitral valve surgery for patients with a giant left atrium were evaluated by analyzing the short- and long-term surgical results and changes in the left atrial dimension (LAD) and respiratory function of 30 patients. Of the 30 patients, 2 (7%) died of multiple organ failure on postoperative days 26 and 117, but no other deaths occurred during the mean follow-up of 5.9 +/- 2.

Flow cytometric analysis of the DNA content of thymomas.

In this study, the prognostic value of determining the nuclear DNA content of thymomas by flow cytometry was evaluated. Of a total 31 resected thymomas, 10 (32%) showed DNA aneuploidy, the presence of which was significantly correlated with an advanced clinical stage of disease. The patients with an aneuploid tumor had a poorer prognosis than those with a diploid tumor, demonstrating a survival rate of 50% at 7 postoperative years, which was considerably less favorable than that of the patients with a diploid tumor, being 100% in the same period (p < 0.

Autoradiographic measurement of regional brainstem blood flow. Findings after 2 hours of occlusion of the unilateral anterior inferior cerebellar artery and 30 minutes' occlusion of the unilateral vertebral artery.

Using [14C]iodoantipyrine, regional brainstem blood flow was measured in the rat 2 h after occlusion of the left anterior inferior cerebellar artery (AICA) and 30 min after occlusion of the left vertebral artery (VA). Two hours after occluding the left AICA, the mean +/- SEM value of blood flow in 6 animals in the right superior olive was 2.13 +/- 0.

[Mitral annuloplasty for mitral regurgitation due to dilated cardiomyopathy--a case report].

A 74-year-old woman who had had severe mitral regurgitation (MR) due to dilated cardiomyopathy (DCM) was referred to our hospital for surgical management because she had suffered from congestive heart failure (CHF) of NYHA functional class IV in spite of maximal medical treatment. We have successfully performed mitral annuloplasty (MAP) using a Carpentier annuloplasty ring. Her postoperative course was good and her symptom improved to NYHA functional class II to III one year after the operation.