1.One-Stage Off-Pump CABG and Y Graft Replacement of the Abdominal Aorta in a Patient with Ischemic Heart Disease and Leriche's Syndrome
Toru Mizumoto ; Katsutoshi Adachi ; Katsumoto Hatanaka
Japanese Journal of Cardiovascular Surgery 2004;33(6):410-413
A 68-year-old man with unstable angina after old myocardial infarction, and Leriche's syndrome was admitted. Coronary angiography found 90% stenosis of the left anterior descending artery (LAD), 99% stenosis of the diagonal branch, 99% stenosis of the right coronary artery (RCA), and 90% stenosis of the 4-posterior descending branch (4 PD). Left circumflex artery (LCX) was diffusely stenotic and small. Aortography revealed complete occlusion of the infrarenal aorta. Due to the risk of limb-threatening ischemia, we planned simultaneous revascularization of myocardium and the lower extremities. Off-pump coronary artery bypass (OPCAB) was performed first. Subsequently Y graft replacement of abdominal aorta was completed. The postoperative course was uneventful and he was discharged on the 14th day after operation.
2.A New Technique for Composite Graft Preparation in Aortic Root Replacement
Yasuhiro Sawada ; Shunsuke Sakamoto ; Kazuya Fujinaga ; Nin Tanaka ; Toru Mizumoto
Japanese Journal of Cardiovascular Surgery 2012;41(5):247-249
We report the Lampshade Technique : a new technique using Carbo-Seal Valsalva (Sorin Biomedica, Saluggia, Italy) to facilitate preparation of a composite graft. A Bentall operation and an ascending aorta replacement were performed with a composite graft using a Carbo-Seal Valsalva. This new technique can be considered useful as it can reduce the time required for preparing a composite graft, and create a skirt portion for continuous suturing to prevent bleeding.
3.One-Stage Operation for Ruptured Abdominal Aortic Aneurysm and Acute Myocardial Infarction.
Toru Mizumoto ; Takane Hiraiwa ; Toshihiko Kinoshita ; Hideki Fujii
Japanese Journal of Cardiovascular Surgery 1999;28(3):170-173
A 65-year-old man suffered abdominal pain and anterior chest pain due to a ruptured abdominal aortic aneurysm (AAA) and acute myocardial infarction. Abdominal CT scanning demonstrated infrarenal AAA measuring 6.0cm in diameter with retroperitoneal hematoma. Coronary angiography was performed revealing total occlusion of the left anterior descending and 90% stenosis in the circumflex coronary artery. The operation was performed immediately after CAG. After median sternotomy, cardioplumonary bypass was initiated using moderate hypothermia (32.0°C). After completion of CABG, AAA replacement using a Y-shaped prosthesis was performed during extracorporeal circulation. Extracorporeal circulation protects the heart from the hemodynamic changes after aortic clamping or declamping during abdominal aortic surgery. Our experience shows that one-stage operation is a feasible option for patients with AAA and coronary artery disease accompanied by impaired left ventricular function.
4.A Case of 1-Stage Replacement of the Ascending Aorta, Coronary Artery Bypass Grafting and Revascularization of the Lower Extremities
Toru Mizumoto ; Katsutoshi Adachi ; Katsumoto Hatanaka ; Toshihiko Kinoshita
Japanese Journal of Cardiovascular Surgery 2003;32(6):355-357
An 86-year-old woman was transferred to our hospital because of chest pain and left incomplete paralysis. CT-scan revealed a dissecting aortic aneurysm (DeBakey type 2) 6cm in diameter. Coronary angiography and aortography were perfomed to assess the coronary artery disease and ASO, they showed occluded LAD, 90% stenosis of CX and occluded left external iliac artery. We planned a 1-stage operation. Coronary artery bypass grafting with the beating heart was carried out prior to replacement of the ascending aorta. Then we performed femoro-femoro bypass. The postoperative course was uneventful and the patient was discharged 23 days after the operation.
5.A Case of One-Stage Surgery for Abdominal Aortic Aneurysm, Arch Aneurysm and Coronary Artery Disease
Katsutoshi Adachi ; Toru Mizumoto ; Katsumoto Hatanaka ; Iwao Hioki
Japanese Journal of Cardiovascular Surgery 2004;33(4):302-305
A 71-year-old man was transferred to our hospital because of impending rupture of an abdominal aortic aneurysm (AAA). Preoperative CT scan demonstrated a huge aneurysm of the aortic arch (TAA) associated with an AAA. Emergency coronary angiography revealed 3-vessel disease. One-stage surgery including TAA repair, coronary bypass surgery, and AAA repair was performed to avoid the possibility of rupture of the remaining aneurysms and the risk of ischemic heart diseases. One-stage surgery is a possible approach for patients with severe multivascular diseases.
6.Sarcoma Causing Mitral Valvular Dysfunction That Rapidly and Specifically Infiltrated into the Mitral Valve
Shunsuke Sakamoto ; Kenichiro Fujii ; Yasuhiro Sawada ; Yu Shomura ; Jin Tanaka ; Toru Mizumoto
Japanese Journal of Cardiovascular Surgery 2016;45(3):112-114
Primary cardiac malignant tumors are relatively rare, and their prognosis is poor. We report a patient with sarcoma causing severe mitral regurgitation and stenosis due to rapid and specific infiltration into the mitral valve.
7.Staged Approach Using Proximal Open-Stenting Technique and Distal Open Repair for the Treatment of Extensive Thoracic Aortic Aneurysms
Toru Mizumoto ; Satoshi Teranishi ; Hisato Ito ; Yasuhiro Sawada ; Naoki Yamamoto ; Shinji Kanemitsu
Japanese Journal of Cardiovascular Surgery 2017;46(3):139-142
A 50-year-old man with an extensive thoracic aortic aneurysm underwent staged surgery which consisted of preceding total aortic arch replacement with the frozen elephant trunk technique using J Graft Open Stent Graft®, followed by open thoracoabdominal aortic aneurysm repair. During the second operation, the descending aorta was cross clamped along with the preexisting stent graft, and Dacron graft was anastomosed directly to the stent graft using a running 4-0 monofilament suture. The anastomosis site was then covered with a short piece of Dacron graft identical with the stent graft in size to secure hemostasis. We herein discuss our approach in this complex case, focusing on prevention of inadvertent events such as deformation of the preexisting stent graft and unexpected bleeding.
8.A Case of Isolated Internal Iliac Artery Aneurysm with Arteriovenous Fistula
Yu Shomura ; Michihiro Nasu ; Yukikatsu Okada ; Hiroshi Fujiwara ; Tadaaki Koyama ; Toru Mizumoto
Japanese Journal of Cardiovascular Surgery 2013;42(5):438-441
We report a case of left internal iliac aneurysm that ruptured into the left common iliac vein and formed an arteriovenous fistula. A 79-year-old man who had general fatigue was admitted to our hospital with a diagnosis of left internal iliac artery aneurysm, left hydronephrosis, dehydration and low renal function. After dehydration and low renal function resolved rapidly by medical treatment, an enhanced computed tomography was performed. This demonstrated a 69 by 67 mm diameter left internal iliac artery aneurysm with an arteriovenous fistula. During the operation, left common iliac artery and left external iliac artery were resected and the stumps sutured. External iliac-external iliac artery bypass was performed. An occlusive balloon catheter was inserted from the left femoral vein and the balloon was dilated to patch the fistula before opening the aneurysm. After clamping the proximal artery the aneurysm was opened. Bleeding from the fistula was controlled by this maneuver and digital compression of the left common iliac vein where was proximal side of fistula. An arteriovenous fistula with a 18 by 3 mm orifice was found between the left internal iliac artery and left common iliac vein. The fistula was closed from the inside of the aneurysm. His postoperative course was uneventful.
9.A Case Report of Dissecting Aneurysm(DeBakey Type II) after Aortic Valve Replacement.
Hitoshi Suzuki ; Ryuji Hirano ; Toru Mizumoto ; Takune Hiraiwa ; Isao Yada ; Hiroshi Yuasa
Japanese Journal of Cardiovascular Surgery 1994;23(6):445-447
A 51-year-old male, who had undergone aortic valve replacement (BS27A) 13 years ago, was admitted with a sudden onset of cerebral stroke and SVC syndrome. Computed tomography and aortography revealed aneurysmal dilatation and dissection of the ascending thoracic aorta with occlusion of the superior vena cava and the right pulmonary artery. A modified Collins procedure was performed and the postoperative course was uneventful.
10.A Case of Endovascular Stent Graft Repair for Thoracic Descending Aortic Aneurysm with Porcelain Aorta
Toru Mizumoto ; Iwao Hioki ; Toshihiko Kinoshita ; Hideki Fujii ; Noriyuki Kato ; Tadanori Hirano
Japanese Journal of Cardiovascular Surgery 2003;32(5):311-313
A 50-year-old man was admitted with a fusiform descending thoracic aortic aneurysm measuring 60mm. Chest CT scan revealed porcelain aorta from the aortic arch to the abdominal aorta. Severe calcification found on the descending aortic wall was considered to entail greater risk for conventional aortic repair and reconstruction of intercostal arteries. Therefore endovascular stent grafting was planned. The stent graft was deployed from near the origin of the left subclavian artery to the 10th thoracic vertebral level. Neither paraplegia nor other complication occurred. Endovascular stent grafting may be a safe and effective method for descending thoracic aneurysms with severely calcified aorta.