1.Rupture of Free Wall of the Left Ventricular and Ventricular Septum (Double Rupture) after Acute Myocardial Infarction
Daisuke Onohara ; Kazuki Hisatomi ; Takahumi Yamada
Japanese Journal of Cardiovascular Surgery 2013;42(3):241-245
Cardiac ruptures are life-threatening complications after acute myocardial infarction. Types of rupture include left ventricle free-wall rupture, ventricular septal rupture, and papillary muscle rupture. Double rupture is defined as the coexistence of two of the above-mentioned forms of rupture. It complicates approximately 0.3% of acute myocardial infarction with the most frequent combination being free-wall rupture and ventricular septal rupture. We present the case of a 74-year-old man whose recent acute myocardial infarction was complicated by a combination of free-wall rupture and ventricular septal rupture. The patient underwent successful surgical treatment of the double myocardial rupture along with bypass grafting.
2.A Case of Acute Type A Aortic Dissection with Acute Coronary Syndrome : Left Main Stenting as a Bridge to Surgery
Muneaki Yamada ; Yasuyuki Kato ; Aya Takahashi ; Daisuke Shiomi ; Hiroshi Kiyama
Japanese Journal of Cardiovascular Surgery 2016;45(5):254-257
A 45-year-old man was hospitalized with sudden-onset chest pain. He was in cardiogenic shock with a systolic pressure of 68 mmHg. His electrocardiogram (ECG) showed ST segment elevation in leads I, aVL, and V2-5. An emergency coronary angiogram (CAG) showed that the true lumens of bilateral coronary arteries were compressed, showing acute Stanford type A aortic dissection involving bilateral coronary artery. A bare metal stent was promptly implanted in the left main trunk (LMT) to restore coronary blood flow because of his hemodynamic instability. Soon afterwards, the ischemic changes on ECG disappeared and he was transferred to the operating room in a stable hemodynamic condition. We performed emergency graft replacement of the ascending aorta and coronary artery bypass grafting. The postoperative CAG showed patent bypass grafts. Implantation of LMT stent, as a bridge to surgery, should be the treatment of choice for acute type A dissection involving LMT.
3.Total Arch Replacement in a Patient with Type A Acute Aortic Dissection and Situs Inversus Totalis
Muneaki Yamada ; Yasuyuki Kato ; Aya Takahashi ; Daisuke Shiomi ; Hiroshi Kiyama
Japanese Journal of Cardiovascular Surgery 2016;45(6):299-301
We report a case of type A acute aortic dissection in a patient with situs inversus totalis. A 51-year-old man was hospitalized with sudden-onset back pain. Contrast-enhanced computed tomography revealed Stanford type A acute aortic dissection and situs inversus totalis. Total arch replacement using selective cerebral perfusion and mild hypothermic circulatory arrest was successfully performed. He was discharged home 23 days after the operation.
8.The Epidemiological Study of Venous Thromboembolism and Bleeding Events Using a Japanese Healthcare Database
Takuhiro Yamaguchi ; Takeshi Fuji ; Masao Akagi ; Yasuyuki Abe ; Mashio Nakamura ; Norikazu Yamada ; Eisei Oda ; Daisuke Matsubayashi ; Kaori Ota ; Masafumi Kobayashi ; Daiju Matsui ; Jumpei Kaburagi ; Yasuyuki Matsushita ; Atsushi Harada
Japanese Journal of Drug Informatics 2015;17(2):87-93
Objective: The aim of this study was to establish the proper definitions of venous thromboembolism (VTE) and bleeding events for a healthcare database in Japan.
Study Design: Validation study.
Methods: The study comprised patients with VTE or who had undergone orthopedic surgery of the lower extremities and whose outpatient or inpatient medical information from April 1, 2008 to September 30, 2013 was available. The source population of the database was derived from 100 acute-care hospitals. The endpoints were VTE events (deep venous thrombosis [DVT], pulmonary thromboembolism [PE]) and bleeding events (bleeding requiring blood transfusion, intracranial hemorrhage, intraocular hemorrhage, upper gastrointestinal [GI] bleeding, and lower GI bleeding). The frequent events with laboratory data were randomly extracted and evaluated, while all the infrequent events with laboratory data were extracted and evaluated. Positive predictive value (PPV) was defined as the proportion of events judged to be clinical by medical experts of all the extracted events. First, we conducted a test with a small number of cases and then revised the definitions of events. Second, we extracted and evaluated data in 50 patients for VTE and bleeding events patients, based on which we defined the target PPV level between 60 and 70%.
Results: Of the 5,044,743 patients in the database, 36,947 patients underwent orthopedic surgeries of the lower extremities and 3,578 patients experienced a VTE event. The PPV at the first evaluation was 80.0% (8/10) for DVT, 57.1% (4/7) for PE, and 27.3% (6/22) for bleeding events. At the second evaluation using the revised definitions, the PPV were 75.0% (42/56) for VTE and 73.3% (33/45) for bleeding events. Overall, the PPVs for VTE and bleeding events were over 70%. The PPV of the VTE events were 76.9% (30/39) for DVT and 70.6% (12/17) for PE. The PPVs of each type of bleeding event were over 70% except for intracranial hemorrhage (44.4%, 4/9).
Conclusion: The PPV was high for VTE events (75.0%) and bleeding events (73.3%). The definitions used in this study are rational for the identification of VTE, DVT, PE, and bleeding events in the healthcare database in Japan. The definition for each type of bleeding event should be investigated in further studies.
9.Valsalva Aneurysm Filled with Thrombi Mimicking a Cardiac Tumor.
Yasuharu LEE ; Naoki MORI ; Daisuke NAKAMURA ; Takahiro YOSHIMURA ; Masayuki TANIIKE ; Nobuhiko MAKINO ; Hiroyasu KATO ; Yasuyuki EGAMI ; Ryu SHUTTA ; Jun TANOUCHI ; Yoshio YAMADA ; Masami NISHINO
Korean Circulation Journal 2012;42(12):869-871
A Valsalva aneurysm filled with thrombi can be difficult to diagnose, because it mimics a cardiac tumor. Both cardiac magnetic resonance imaging (MRI) and transesophageal echocardiogram (TEE) were performed on a patient who showed a low-echoic mass located between the atrial septum and the non-coronary sinus. Based on MRI findings allowing tissue characterization and the accurate location of the mass and the TEE findings of an irregular surface of the mass and a partial defect in the edge of the non-coronary sinus, we diagnosed the mass as a thrombosed Valsalva aneurysm that had perforated the inter-atrial septum. The operative findings coincided with the preoperative diagnosis. Both MRI and TEE are useful for diagnosing this condition.
Aneurysm
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Atrial Septum
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Echocardiography
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Heart Neoplasms
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Humans
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Magnetic Resonance Imaging
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Sinus of Valsalva
10.Effect on Undergraduate Medical Students of Exposure to a Summer Camp for Children with Asthma.
Shigemi YOSHIHARA ; Toshio ABE ; Yumi YAMADA ; Makoto WATANABE ; Mika ONO ; Mariko OYAMA ; Sanae KANAZAWA ; Michio NUMATA ; Kiyoshi NISHIKURA ; Daisuke NAKAJIMA ; Megumi HOSHI ; Norimasa FUKUDA ; Tamotsu ANDO ; Noriko KANNO ; Osamu ARISAKA ; Mitsuoki EGUCHI
Medical Education 2001;32(1):39-45
We investigated the effects on medical education of early exposure of undergraduate students to a summer camp for children with asthma. An objective evaluation by the editorial staff found final improvements in the following areas (in descending order of frequency): learning of basic medical behavior (91% of students); cooperative attitude of medical staff in general treatment with the patient and the patient's family (88%); understanding of childhood growth and development (80%); knowledge of childhood asthma (69%); and mastery of basic techniques for therapy and examination (41%). The differences in the ratio of improvement (%) before and after visiting the camp, were (in descending order of frequency): cooperative attitude of medical care staff in general medical treatment with the patient and the patient's family (47%); understanding of childhood growth and development (45%); knowledge of childhood asthma (38%); learning of basic medical manner (34%); and mastery of basic techniques for therapy and examination (25%). These findings suggest that a summer camp is useful for exposing undergraduate medical students to children with asthma and is effective for helping them understand patients and family-oriented pediatric medicine.