1.A Case of Anterolateral Papillary Muscle Rupture Caused by a Diagonal Branch Occlusion
Atsushi Bito ; Noboru Murata ; Noboru Yamamoto
Japanese Journal of Cardiovascular Surgery 2006;35(1):45-48
We encountered an instructive case of anterolateral papillary muscle rupture after acute myocardial infarction. A 73-year-old woman with rapidly progressive dyspnea came to our emergency room. Her symptoms associated with acute heart failure rapidly worsened. We diagnosed anterolateral papillary muscle rupture after acute myocardial infarction due to occlusion of the first diagonal branch, based on transesophageal echocardiogram and coronary angiography. We immediately performed mitral valve replacement and coronary artery bypass grafting (CABG) to the diagonal branch. Although she required postoperative intraaortic balloon pumping (IABP) and percutaneous cardiopulmonary support (PCPS), she eventually recovered. Mitral papillary muscle rupture causes rapidly deteriorating hemodynamics and requires surgical treatment. Because of a serious complication of myocardial infarction, this case emphasizes that early diagnosis and aggressive treatment are required for mitral papillary muscle rupture.
2.Mitral Valvuloplasty for Mitral Regurgitation in an Atypical Variant of Cardiac Fabry Disease
Atsushi Bito ; Noboru Murata ; Noboru Yamamoto
Japanese Journal of Cardiovascular Surgery 2006;35(2):109-113
We report a case of mitral regurgitation due to an atypical variant of Fabry disease. A 60-year-old man was admitted to our hospital. He had a history of myocardial infarction and heart failure, and was repeatedly admitted for worsening heart failure (NYHA class II to III). A follow-up echocardiogram revealed deteriorating dilated cardiomyopathy and mitral regurgitation. We performed valvuloplasty for mitral regurgitation. Cardiomyopathy was suspected during the operation and myocardial biopsy was performed. We diagnosed Fabry disease by histopathological findings. After the operation, his heart failure temporarily improved. Heart failure worsened 4 months later. He died of heart failure a year later from the operation. Fabry disease (α-galactosidase-A deficiency) is an inherited metabolic disease. In Fabry disease, angina, myocardial infarction, hypertrophic cardiomyopathy, dilated cardiomyopathy, and mitral regurgitation are common cardiac manifestations. Recently, an atypical variant of Fabry disease, with manifestations limited to the heart, has been increasingly reported. This case suggested that we might encounter Fabry disease with only cardiac manifestations such as cardiomyopathy and valvular disease in routine clinical work.
3.A Case of "Edge-to-Edge" Mitral Valve Plasty Performed for Mitral Regurgitation Associated with Secundum Atrial Septal Defect
Atsushi Bito ; Noboru Murata ; Noboru Yamamoto
Japanese Journal of Cardiovascular Surgery 2007;36(1):48-51
A 33-year-old man presented with respiratory distress and lower leg edema in April 2006. Atrial septal defect (ASD), complicated with moderate mitral regurgitation (MR), advanced tricuspid regurgitation (TR) and pulmonary hypertension (95/32mmHg), was diagnosed. Qp/Qs was 6.3 and L-R shunt ratio was 84.4%. An “edge-to-edge” mitral valve plasty for MR complication as well as closure of the septal defect and tricuspid annuloplasty was performed, and a good result was obtained. It is known that ASD has a tendency to be accompanied by MR, and the strategy for treatment course for MR is debatable. The mitral lesions of MR complicating ASD are often seen in the posteromedial side of the anterior mitral leaflet, and usually many of the tendinous cords and valve leaflets are in the normal range in length. There have been reports on the mid-term results of edge-to-edge repair of mitral regurgitation due to degenerative lesions but the mid- and long-term results for MR complicating ASD, such as this case are unknown. We need to carefully observe the time course of this case.
4.Sutureless Treatment for Blow-out Type Left Ventricular Free Wall Rupture
Yutaka Narahara ; Atsushi Bito ; Noboru Murata
Japanese Journal of Cardiovascular Surgery 2010;39(5):254-257
A 78-year-old woman who had had chest pain since 3 days previously, was given a diagnosis of acute myocardial infarction. Emergency coronary angiography revealed mid-left anterior descending artery and proximal right coronary artery lesions. Percutaneous coronary intervention was performed, and re-perfusion was successful. Cardiac tamponade was then diagnosed. Despite pericardial drainage, she remained in shock. After an intra-aortic balloon pump was established, an emergency operation was performed. On the operating table, her pulse disappeared. When thoracotomy was performed, a viscous hematoma was found in the pericardium. We found 3 ruptures in the left ventricular free wall, and hemorrhage. The diagnosis was a blow-out type left ventricular free wall rupture of the heart (LVFWR). We have used the patches-and-glue sutureless technique without cardiopulmonary support. This treatment for blow-type of LVFWR is rare.
5.A Case of Infective Endocarditis of the Aortic Valve due to Peptostreptococcus spp.
Yutaka Narahara ; Atsushi Bito ; Noboru Murata
Japanese Journal of Cardiovascular Surgery 2011;40(3):150-154
A 66-year-old man was given a diagnosis of urinary-tract infection and hospitalized for 2 weeks in another hospital in late August 2009. In late October of that year he was transferred to our hospital by ambulance because he was unable to ingest anything orally. Echocardiography showed that a vegetation of about 10 mm in maximum dimension was attached to the aortic valve, causing severe aortic stenosis and regurgitation. The patient's general condition was poor, and sepsis and disseminated intravascular coagulation syndrome developed. The next day, an urgent operation was performed, and an abscess was observed occupying one-third of the aortic valve annulus. The abscess was completely excised and the abscess cavity was covered with an equine pericardium patch. We then performed aortic valve replacement using a bioprosthetic valve followed by tricuspid valve annuloplasty. Peptostreptococcus spp. was detected in a culture of the abscess. Infective endocarditis due to Peptostreptococcus spp. is rare. There has been no recurrence of infection for 7 months postoperatively.
6.A Case of Infected Thoracoabdominal Aortic Aneurysm Caused by Citrobacter koseri
Atsushi Bito ; Yutaka Narahara ; Noboru Murata ; Noboru Yamamoto
Japanese Journal of Cardiovascular Surgery 2008;37(6):333-336
The patient was a 58-year-old woman with untreated diabetes. She consulted a local doctor in May 2006 complaining of constipation that had persisted for 2 weeks, under gradually worsening abdominal pain. She was transferred to our hospital with a diagnosis of aortic aneurysm. Blood tests indicated high inflammatory response, and CT showed hematoma around the aorta from directly under the diaphragm to the level of superior mesenteric artery and influx of contrast medium into the hematoma. Control of the infection was first attempted with antibiotics, but eventually surgery was performed because the hematoma increased. The hematoma and aortic wall were completely excised from the local of the diaphragm to the level beneath the renal artery, with partial cardiopulmonary bypass and selective perfusion to abdominal branches, and anatomic reconstruction was performed with a synthetic graft and omental implantation. The hematoma was fetid and Citrobacter koseri was detected in culture. The patient was discharged after 4 weeks of antibiotic treatment, without complications and with satisfactory progress. At present, there has been no recurrence of infection in the 22 months since her discharge.
7.Defining Inversion/Eversion of the Foot : Is it a Triplane Motion or a Coronal Plane Motion?
Hideo DOYA ; Atsushi MURATA ; Yumi ASANO ; Hideshige MORIYA ; Katsunori YOSHINAGA
The Japanese Journal of Rehabilitation Medicine 2007;44(5):286-292
The purpose of this study was to resolve the confusion existing in the terminology for describing foot motion, particularly the definitions of inversion and eversion. First, the definitions of foot motion used by the Japanese Association of Rehabilitation Medicine and the Japanese Orthopedic Association were compared with those used by the American Orthopaedic Foot and Ankle Society (AOFAS) and with those used by the International Society of Biomechanics (ISB), to identify agreements and differences. Next, the terminology utilized in the literature was explored by examining several major textbooks and related academic papers retrieved through a search of the PubMed medical literature database. In the definitions of AOFAS and ISB, inversion and eversion, which correspond to triplane motions in the definition used in Japan, were regarded as motions in the coronal plane. Terminology in the textbooks was very diverse. Of the 141 academic papers explored, 92 papers (66%) regarded inversion/eversion as coronal plane motion, and 4 papers (3%) regarded it as a triplane motion. In the remaining 43 papers (31%), the definition was unspecified. In academic articles addressing foot motions, to avoid confusion in terminology, the definitions of inversion and eversion need to be specified.
8.Strategy for Abdominal Aortic Aneurysm Repair in Patients with Ischemic Heart Disease
Atsushi Yamaguchi ; Ken-ichiro Noguchi ; Hideo Adachi ; Koji Kawahito ; Sei-ichiro Murata ; Takashi Ino
Japanese Journal of Cardiovascular Surgery 2004;33(2):73-76
Abdominal aortic aneurysms (AAA) are frequently associated with clinically significant coexistent ischemic heart disease (IHD). Cardiac events are the most common cause of death after AAA repair. Preoperative coronary evaluation and revascularization have been recommended to reduce postoperative cardiac complications following AAA repair. In this study, we retrospectively reviewed all patients who underwent AAA repair and compared operative results in patients with and without IHD. Of 388 patients who underwent elective AAA repair, 382 (98.5%) had aortography and coronary angiography for preoperative evaluation. Significant coronary artery disease was seen in 124 patients (32.5%). As a result of the evaluation, 46 patients (12.0%) were considered candidates for medical therapy, 18 for percutaneous coronary intervention (PCI), and 60 for coronary artery bypass grafting (CABG). In 24 patients (6.3%) who needed CABG and had large sized AAAs (>60mm), simultaneous CABG and AAA repair were performed. In the remaining 36 patients (9.4%) who needed CABG and had medium sized AAAs (40mm<, <60mm), staged operation was performed. We performed retrospective review comparing postoperative cardiac events and operative mortality among these treatment groups. There were 5 operative deaths (5/388, 1.3%) in patients following AAA repair. There were 2 operative deaths (2/124, 1.6%) in patients with significant IHD and 3 deaths (3/258, 1.2%) without IHD. In patients with IHD, 1 patient who received medical therapy died of acute renal failure and another one who received PCI died of acute myocardial infarction. There were no operative deaths or cardiac-related events in patients who received CABG before or concomitant AAA repair. There was only 1 cardiac-related event in all patient groups following AAA repair. Coronary arteries were preoperatively evaluated in almost all patients with AAA. If IHD was significant, the treatment for the IHD preceded AAA repair. Our strategy succeeded in reducing operative mortality and cardiac-related events in patients with both AAA and IHD. If a patient with a large sized AAA (>60mm) needs CABG, one-stage operation is recommended.
9.The Prevention and Management of Postoperative Mediastinitis and the Infection Promoting Potential of Bone Wax.
Atsushi Yamaguchi ; Takashi Ino ; Akihiro Mizuhara ; Hideo Adachi ; Hirofumi Ide ; Koji Kawahito ; Seiichiro Murata
Japanese Journal of Cardiovascular Surgery 1994;23(4):257-260
Between December of 1989 and May of 1993, 7 of 338 patients (2.1%) who underwent median sternotomy for cardiac operations developed mediastinitis. All of these infections caused by Staphylococcus species. Six of seven patients with mediastinitis were successfully treated with debridement, irrigation and omental transposition into the mediastinum. Between December of 1989 and May of 1992, sterile bone wax was used as a hemostatic agent in 233 of these patients. Between June of 1992 and May of 1993 an argon beam coagulator was used in place of bone wax in 105 patients. The incidence of mediastinitis significantly differed in relation to whether patients received bone wax or not (7 of 233 patients who did (3.0%) versus none in 105 patients who did not (0%) p<0.01). We conclude from this study that bone wax may be a promoting agent in postoperative mediastinitis, so the routine use of bone wax should be reconsidered.
10.Ascending Thoracic Aorta-Common Iliac Artery Bypass for Atypical Coarctation.
Atsushi Yamaguchi ; Hideo Adachi ; Akihiro Mizuhara ; Seiichiro Murata ; Hitoshi Kamio ; Takashi Ino ; Masahiko Okada
Japanese Journal of Cardiovascular Surgery 1996;25(6):390-393
Bypass grafting from the ascending thoracic aorta to the common iliac artery was performed to manage proximal hypertension in a patient with atypical coarctation of the thoracic aorta. The patient's history was significant for an acute aortic thrombosis at the level of the diaphragm for which she underwent an axillo-bifemoral bypass grafting as an emergency operation. Although she was doing well following the initial bypass grafting, the second bypass grafting was required to treat proximal hypertension refractory to medical management. The axillo-femoral bypass graft had a smaller diameter and a longer subcutaneous distance, and the blood supply to the abdominal viscera may have been insufficient. The proximal hypertension was well controlled following ascending thoracic aorta to common iliac bypass, because the diameter (16mm) of the graft is larger than that of the axillo-bifemoral bypass graft (8mm).