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Originals Involvement of Sympathetic Activity in the Onset of Atrial Fibrillation following Cardiac Surgery 　　T. Shimomura, et al.…309 Aortic Valve Replacement for Severe Aortic Stenosis with Severe Left Ventricular Dysfunction 　　A. Higashi, et al.…315 Clinical Comparison of a New Non-Sealed Woven Dacron Graft and Sealed Woven Dacron Grafts 　　T. Satsu, et al.…319 Case Reports A Case of Infrarenal Abdominal Aortic Aneurysm Associated with Postoperative Paraplegia 　　 H. Kurosawa, et al.…324 Sutureless Repair of Pulmonary Venous Obstruction after Repair of Total Anomalous Pulmonary Venous Connection (1a＋2a) 　　K. Kinouchi, et al.…328 Aneurysm of the Subclavian Artery and Aneurysm of the Cerebral Artery in Association with Congenital Absence of Ipsilateral Internal Carotid Artery 　　F. Asami, et al.…333 A Case of Off-Pump Coronary Artery Bypass Grafting in a Patient with Liver Cirrhosis, Advanced Thrombocytopenia and Coronary Artery Aneurysm 　　M. Kawasaki, et al.…336 A Case of Papillary Fibroelastoma of the Right Atrium with Pulmonary Embolism 　　T. Kimura and T. Yoshimatsu…340 A Successfully Operated Case of Traumatic Aortic Disruption with Multisystem Trauma 　　H. Watanabe, et al.…343 A Rare Case of Abdominal and Thoracic Aortic Aneurysm Complicated with Buerger's Disease 　　S. Hayashi, et al.…347 Ruptured Coronary Artery Aneurysm with a Fistulous Communication 　　A. Yamazaki, et al.…351 A Case of Cholesterol Crystal Embolism after Coronary Artery Bypass Grafting 　　Y. Sotoda, et al.…354 Two Cases of Infected Abdominal Aortic Aneurysm 　　M. Hamaji, et al.…358 Valve Replacement for Infective Endocarditis following Vertebral Osteomyelitis: Report of Two Cases 　　K. Tamura, et al.…363 A Patient with an Aortic-Root Pseudoaneurysm in Whom Intraaortic Balloon Pumping Improved Cardiogenic Shock 　　H. Adachi, et al.…367