1.An Operative Case of Bilateral Coronary Arteries to Pulmonary Artery Fistula with Giant Saccular Aneurysm.
Yoshihiro NAKAYAMA ; Shinichirou MAGATA ; Masafumi NATSUAKI ; Tsuyoshi ITOH ; Takahiro YAMADA
Japanese Journal of Cardiovascular Surgery 1992;21(6):600-604
We reported an operative case of bilateral coronary arteries to pulmonary artery fistula with giant saccular aneurysm. This 68 year-old female was admitted for evaluation of chest oppression and heart murmur. On coronary angiography, the diagnosis was made as a coronary artery fistula originating from right coronary artery and left anterior descending artery, and draining into the main pulmonary artery. The operation was indicated by giant saccular aneurysm, high shunt ratio, and positive finding of ischemic change on exercise electrocardiogram. The closure of coronary fistula and aneurysmorrhaphy were performed under cardiopulmonary bypass. The aneurysm was 25×30mm diamater, and not found arteriosclerotic change in operative finding. The fistula was completely disappeared by postopertive coronary angiography. We concluded that curative operation for coronary artery fistula with giant aneurysm can be done with minimal risk under cardiopulmonary bypass.
3.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.
4.Symptom analysis of 537 patients with neurogenic intrapelvic syndrome.
Takano MASAHIRO ; Ogata SHUNJI ; Nozaki RYOICHI ; Hisano SABURO ; Saiki YASUMITSU ; Fukunaga MITSUKO ; Takano SHOTA ; Tanaka MASAFUMI ; Magata SHINICHIRO ; Nakamura YASUSHI ; Sakata GENTARO ; Yamada KAZUTAKA
Chinese Journal of Gastrointestinal Surgery 2010;13(12):921-923
OBJECTIVETo characterize the symptoms of neurogenic intrapelvic syndrome and the pathogenic mechanisms.
METHODSA total of 537 patients with neurogenic intrapelvic syndrome were treated in the Takano Hospital between 2001 and 2005. Clinical data were analyzed retrospectively.
RESULTSThe mean age was 58.5 years old. There were 205 males and 332 females. There were 80 patients(14.9%) who presented with only one symptom with anorectal pain being the most common one (43.8%, 35/80). One hundred and fifty-six(29.1%) patients had two symptoms with anorectal pain and difficult evacuation being the most common combination (26.3%, 41/156). There were 144 patients (26.8%) complained of 3 symptoms and the most common combination was anorectal pain, difficult evacuation, and abdominal discomfort (30.0%, 43/144). A combination of 4 symptoms was reported in 105 patients(19.6%) with the combination of anorectal pain, incontinence, abdominal discomfort, and lumbar discomfort being the most often(65.7%, 69/105). In addition, there were 52 patients(9.7%) who had above 5 symptoms simultaneously. The frequencies of the 5 symptoms were 73.6% for anorectal pain, 27.9% for incontinence, 69.6% for difficult evacuation, 55.3% for abdominal discomfort, and 53.6% for lumbar discomfort.
CONCLUSIONSSymptomatology of neurogenic intrapelvic syndrome is complicated. The pathogenic mechanism may be related to concurrent dysfunction of sacral nerve and pelvic splanchnic nerve.
Encopresis ; etiology ; Female ; Humans ; Male ; Middle Aged ; Pelvic Pain ; etiology ; Retrospective Studies ; Syndrome
5.Pulmonary mycobacterium avium complex disease complicated by cancer: an 11-year survey at a single-center
Ryohei KAMEI ; Michiru SAWAHATA ; Naoko YOSHIZUMI ; Masafumi SATA ; Masayuki NAKAYAMA ; Toshiyuki YAMADA ; Nobuyuki TANIGUCHI ; Takuji SUZUKI ; Masashi BANDO ; Koichi HAGIWARA
Journal of Rural Medicine 2021;16(2):72-76
Objective: Pulmonary mycobacterium avium complex (MAC) disease is increasing significantly worldwide. Several studies have investigated the clinical features of pulmonary MAC disease in the setting of cancer. Here, we aimed to clarify the clinical characteristics of patients with cancer with recent onset of pulmonary MAC disease and the effect of cancer on the onset of this disease.Patients and Methods: Of the 323 consecutive Japanese patients newly diagnosed with pulmonary MAC disease at Jichi Medical University Hospital between and 2006–2017, we retrospectively reviewed 79 consecutive patients with cancer.Results: Seventeen patients had lung cancer (21.0%), while 62 had non-lung cancer. Of the 17 patients with lung cancer, 16 had adenocarcinoma of which 10 had stage I to III disease; 8 of the 10 patients had not received chemotherapy. Sixteen patients with lung cancer had a MAC infection in the ipsilateral lung. Notably, 9 of the 11 lung cancer patients who did not undergo surgery had a MAC infection in the affected lobe. Of the 39 patients with the most common types of non-lung cancer (14 had gastric cancer, 13 had colorectal cancer, and 12 had breast cancer), 22 had stage I to III disease, and 18 of these 22 had not received chemotherapy.Conclusion: Lung cancer may act as a local factor contributing to the onset of pulmonary MAC disease in the ipsilateral lung. However, the underlying mechanism by which a history of cancer might affect the onset of pulmonary MAC disease remains unclear. Further investigation into this mechanism is needed.
6.Virtual Hospital Tour and Observership for First and Second-year Medical Students
Keiichiro ISHIBASHI ; Satomi SHIBAZAKI ; Tomoe SUGIYAMA ; Yumi YONEOKA ; Ryuichiro ARAKI ; Makiko UEMURA ; Kyoko ONISHI ; Yasuko YAMADA ; Yuuki KAWAMURA ; Kensuke NAKAHIRA ; Kohei KANEDA ; Yuka SHIBAZAKI ; Masafumi OYAMA ; Takeo TAKAHASHI ; Koji TOMORI ; Morihiro HIGASHI ; Michio SHIIBASHI ; Shigehisa MORI
Medical Education 2021;52(3):221-226
Students in all years, including those in lower years, were prohibited from coming to campus because of COVID-19, which began to spread in January 2020. However, we believed that a hospital tour and observership would be important practical training for first and second year medical students as part of the early exposure program, which aims to increase student motivation. Thus, we decided to conduct a virtual hospital tour and a virtual observation of medical doctors’ work. We used Zoom to conduct a virtual hospital tour for first-year students in June, and a virtual observation of physicians’ work for second-year students in December. Although this offered less of an opportunity to experience the reality of the clinic, there have been benefits in terms of increased learning content, fairness of learning opportunities delivered, and the promotion of independent learning. With regard to a “Hospital Tour” and the “Observation of Medical Doctors’ Work” , we believe that hybrid forms, which are able to skillfully combine the strengths of the two methods, would be effective.