1.Two Cases of Combined Operation of Abdominal Aortic Aneurysm and Urinary Malignant Tumor.
Masayuki Sakaki ; Junjiro Kobayashi ; Masakatsu Ohtani
Japanese Journal of Cardiovascular Surgery 1995;24(5):337-340
We experienced 2 cases of abdominal aortic aneurysm (AAA) with malignant tumor of urinary organs. Case 1 was a 70-year-old man who was admitted for aortic dissection (De Bakey IIIb) with coexistence of AAA and left renal cancer. After the pseudolumen of the aortic dissection became thrombotic, the abdominal aortic aneurysmectomy and left nephrectomy were performed simultaneously. Case 2 was a 75-year-old man with AAA and prostatic cancer. He was treated by a one-stage operation consisting of aneurysmectomy, prostatectomy and castration. The postoperative courses were uneventful without prosthetic graft infection. Chemohormonal therapy could be induced one month after the operations. Concomitant resection of urinary malignant tumor and abdominal aortic aneurysmectomy may be feasible even in older patients.
2.Introduction of Problem-Based Preclerkship Clinical Training in Internal Medicine
Nobuyuki FURUTANI ; Hiroshi YOSHIDA ; Norio TADA ; Masayuki KOBAYASHI
Medical Education 2004;35(1):57-63
To increase the safety and effectiveness of clinical clerkships, we have developed a 4-week preclinical training program, “Problem-Based Clinical Training, ” based on the concept of problem-based learning with the aim of encouraging life-long self-directed learning. The first week is a preparation period for clinical practice in which students are trained in problem-solving skills, basic-practice skills, and clinical reasoning. The second and third weeks are a practical training period in which students learn how be in charge of a patient's care. The fourth week was a problem-solving period without practical training in which students learned to solve problems. The students were encouraged to record daily “problem notes” describing problems and “problem solving notes” summarizing problems solved. To emphasize lessons learned, the students also presented and discussed problems. Evidence-based medicine was used as a tool for problem solving. Furthermore, medical record training based on the problem-oriented system using evaluations by other students encouraged self-development to improve clinical practice and the medical record. This curriculum should be effective for mastering the skills of self-directed learning and for motivating for advancement due to consideration of contributable proposals for the patients.
3.Correlation Between Gastric Emptying and Gastric Adaptive Relaxation Influenced by Amino Acids.
Masayuki UCHIDA ; Orie KOBAYASHI ; Chizuru SAITO
Journal of Neurogastroenterology and Motility 2017;23(3):400-408
BACKGROUND/AIMS: Amino acids have many physiological activities. We report the correlation between gastric emptying and gastric adaptive relaxation using tryptophan and amino acids with a straight alkyl chain, hydroxylated chain, and branched chain. Here we sought to further clarify the correlation between gastric emptying and gastric adaptive relaxation by using other amino acids. METHODS: In Sprague-Dawley rats, gastric emptying was evaluated by a breath test using [1-¹³C] acetic acid. The expired ¹³CO₂ pattern, T(max), C(max), and AUC(120min) values were used as evaluation items. Gastric adaptive relaxation was evaluated in a barostat experiment. Individual amino acids (1 g/kg) were administered orally 30 minutes before each breath test or barostat test. RESULTS: L-phenylalanine and L-tyrosine did not influence gastric emptying. All other amino acids, ie, L-proline, L-histidine, L-cysteine, L-methionine, L-aspartic acid, L-glutamic acid, L-asparagine, L-arginine, L-glutamine, and L-lysine significantly delayed and inhibited gastric emptying. L-Cysteine and L-aspartic acid significantly enhanced and L-methionine and L-glutamine significantly inhibited gastric adaptive relaxation. L-Phenylalanine moved the balloon toward the antrum, suggesting strong contraction of the fundus. T(max) showed a significant positive correlation (r = 0.709), and C(max) and AUC(120min) each showed negative correlations (r = 0.613 and 0.667, respectively) with gastric adaptive relaxation. CONCLUSION: From the above findings, it was found that a close correlation exists between gastric emptying and adaptive relaxation, suggesting that enhanced gastric adaptive relaxation inhibits gastric emptying.
Acetic Acid
;
Amino Acids*
;
Animals
;
Arginine
;
Asparagine
;
Aspartic Acid
;
Breath Tests
;
Cysteine
;
Gastric Emptying*
;
Glutamic Acid
;
Glutamine
;
Histidine
;
Lysine
;
Methionine
;
Phenylalanine
;
Proline
;
Rats
;
Rats, Sprague-Dawley
;
Relaxation*
;
Tryptophan
;
Tyrosine
4.Anterior mediastinal abscess diagnosed in a young sumo wrestler after closed blunt chest trauma.
Tatsuro SASSA ; Ken-Ichiro KOBAYASHI ; Masayuki OTA ; Takuya WASHINO ; Mayu HIKONE ; Naoya SAKAMOTO ; Sentaro IWABUCHI ; Mizuto OTSUJI ; Kenji OHNISHI
Chinese Journal of Traumatology 2015;18(6):360-362
Most mediastinal abscesses result from infections after thoracotomy, esophageal perforation or pene- trating chest trauma. This disease is rarely caused by closed blunt chest trauma. All previously reported such cases after closed blunt chest trauma presented with hematoma and sternal osteomyelitis resulting from sternal fracture. Here we report a 15-year-old sumo wrestler who presented with an anterior mediastinal abscess without any mediastinal fracture. The mediastinal abscess resulted from the hematogenous spread of Staphylococcus aureus to a hematoma that might have been caused by a closed blunt chest trauma incurred during sumo wrestling exercises.
Abscess
;
diagnosis
;
microbiology
;
therapy
;
Adolescent
;
Anti-Bacterial Agents
;
therapeutic use
;
Combined Modality Therapy
;
Debridement
;
Diagnosis, Differential
;
Drainage
;
Humans
;
Magnetic Resonance Imaging
;
Male
;
Mediastinal Diseases
;
diagnosis
;
microbiology
;
therapy
;
Staphylococcal Infections
;
diagnosis
;
microbiology
;
therapy
;
Thoracic Injuries
;
diagnosis
;
microbiology
;
therapy
;
Tomography, X-Ray Computed
;
Wounds, Nonpenetrating
;
diagnosis
;
microbiology
;
therapy
;
Wrestling
;
injuries
5.Volunteer Activities at the Hospice of Japan Baptist Hospital: Modified Volunteer Activities Amid the COVID-19 Pandemic
Tetsuya YAMAGIWA ; Miyuki MATSUYA ; Satoko ITO ; Naoyo ONISHI ; Tomomi KISHI ; Masayuki KOBAYASHI
Palliative Care Research 2023;18(1):49-54
At the Japan Baptist Hospital, approximately 70 volunteers are working mainly in hospice. Owing to the coronavirus disease 2019 (COVID-19) outbreak in February 2020, volunteer activities were suspended or severely curtailed at most hospices/palliative care units in Japan. We have been attempting to determine how to continue the volunteer activities, that are indispensable to the hospice care team approach. For example, volunteers’ artworks and potted plants provided patients with the opportunity to participate in seasonal events and feel socially connected without meeting in person. Additionally, we skillfully used web resources, that allowed us to hold staff meetings and bereavement meetings during the pandemic. The hospice staff participated in hospital COVID-19 countermeasure meetings to share and provide the importance of presence of volunteers for the best care of patients throughout the hospital. The “Guideline for Volunteer Activities According to the COVID-19 Outbreak Levels” was initiated in conjunction with the hospital’s infection control team to allow us to continue volunteer activities without spreading the infection.
6.Small Bowel Obstruction After Ileal Pouch-Anal Anastomosis With a Loop Ileostomy in Patients With Ulcerative Colitis.
Hitoshi KAMEYAMA ; Yoshifumi HASHIMOTO ; Yoshifumi SHIMADA ; Saki YAMADA ; Ryoma YAGI ; Yosuke TAJIMA ; Takuma OKAMURA ; Masato NAKANO ; Kohei MIURA ; Masayuki NAGAHASHI ; Jun SAKATA ; Takashi KOBAYASHI ; Shin ichi KOSUGI ; Toshifumi WAKAI
Annals of Coloproctology 2018;34(2):94-100
PURPOSE: Small bowel obstruction (SBO) remains a common complication after pelvic or abdominal surgery. However, the risk factors for SBO in ulcerative colitis (UC) surgery are not well known. The aim of the present study was to clarify the risk factors associated with SBO after ileal pouch-anal anastomosis (IPAA) with a loop ileostomy for patients with UC. METHODS: The medical records of 96 patients who underwent IPAA for UC between 1999 and 2011 were reviewed. SBO was confirmed based on the presence of clinical symptoms and radiographic findings. The patients were divided into 2 groups: the SBO group and the non-SBO group. We also analyzed the relationship between SBO and computed tomography (CT) scan image parameters. RESULTS: The study included 49 male and 47 female patients. The median age was 35.5 years (range, 14–72 years). We performed a 2- or 3-stage procedure as a total proctocolectomy and IPAA for patients with UC. SBO in the pretakedown of the loop ileostomy after IPAA occurred in 22 patients (22.9%). Moreover, surgical intervention for SBO was required for 11 patients. In brief, closure of the loop ileostomy was performed earlier than expected. A multivariate logistic regression analysis revealed that the 2-stage procedure (odds ratio, 2.850; 95% confidence interval, 1.009–8.044; P = 0.048) was a significant independent risk factor associated with SBO. CT scan image parameters were not significant risk factors of SBO. CONCLUSION: The present study suggests that a 2-stage procedure is a significant risk factor associated with SBO after IPAA in patients with UC.
Colitis, Ulcerative*
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Female
;
Humans
;
Ileostomy*
;
Logistic Models
;
Male
;
Medical Records
;
Risk Factors
;
Tomography, X-Ray Computed
;
Ulcer*
7.Efficacy and safety of filgotinib as induction and maintenance therapy for Japanese patients with moderately to severely active ulcerative colitis: a post-hoc analysis of the phase 2b/3 SELECTION trial
Toshifumi HIBI ; Satoshi MOTOYA ; Tadakazu HISAMATSU ; Fumihito HIRAI ; Kenji WATANABE ; Katsuyoshi MATSUOKA ; Masayuki SARUTA ; Taku KOBAYASHI ; Brian G FEAGAN ; Chantal TASSET ; Robin BESUYEN ; Chohee YUN ; Gerald CRANS ; Jie ZHANG ; Akira KONDO ; Mamoru WATANABE
Intestinal Research 2023;21(1):110-125
Background/Aims:
The safety and efficacy of filgotinib, a once-daily oral Janus kinase 1 preferential inhibitor, were evaluated in Japanese patients with ulcerative colitis (UC) in the phase 2b/3 SELECTION trial.
Methods:
SELECTION (NCT02914522) was a randomized, placebo-controlled trial comprising 2 induction studies and a maintenance study. Adults with moderately to severely active UC were randomized in induction study A (biologic-naïve) or B (biologic-experienced) to receive filgotinib 200 mg, 100 mg, or placebo once daily for 11 weeks. Patients in clinical remission or Mayo Clinic score response at week 10 entered the 47-week maintenance study. Efficacy and safety outcomes were assessed in Japanese patients enrolled in Japan.
Results:
Overall, 37 and 72 Japanese patients were enrolled in Japan in induction studies A and B, respectively, and 54 entered the maintenance study. Numerically higher proportions of filgotinib 200 mg-treated than placebo-treated patients achieved clinical remission in induction study A (4/15 [26.7%] vs. 0/6 [0%]) and the maintenance study (5/20 [25.0%] vs. 0/9 [0%]), but not induction study B (1/29 [3.4%] vs. 1/14 [7.1%]). Both doses were well tolerated, and no new safety signals were noted. Herpes zoster was reported in 1 filgotinib 200 mg-treated patient in each of induction study A (2.3%, 1/44) and the maintenance study (5.0%, 1/20).
Conclusions
These data, alongside those of the overall SELECTION population, suggest the potential of filgotinib 200 mg as a viable treatment option for Japanese patients with UC. Owing to small patient numbers, data should be interpreted cautiously.
8.A case of a mesenteric lipoma in the transverse colon
Takashi MAEDA ; Satoshi KOBAYASHI ; Takehiro TAKAGI ; Kenichi KOMAYA ; Shinji KATOU ; Masayuki SAITO ; Akihiro HORI
Journal of the Japanese Association of Rural Medicine 2023;71(5):406-411
A chest X-ray taken during a medical checkup for a 75-year-old man revealed a nodular shadow in the right middle lung field. Chest computed tomography (CT) for further examination showed an intra-abdominal tumor as an additional finding, and the patient was referred to our department. Contrast-enhanced CT revealed a tumor (16×10×5 cm) in the left upper to middle abdomen. The tumor had a clear border and uniform fat density inside. It compressed the stomach to the ventral side, but the patient had no subjective symptoms. Magnetic resonance imaging also showed the tumor contained a uniform fatty component inside, as well as no obvious non-fatty components. An intra-abdominal lipoma was suspected, but the possibility of a welldifferentiated liposarcoma could not be ruled out due to its size. During curative surgery, intraoperative findings revealed a soft tumor, weighing 612 g, with a well-defined border in the mesentery of the transverse colon. Pathological findings showed proliferation of mature adipocytes without malignancy. We report here this case of mesenteric lipoma, a rare intraabdominal tumor, and review the relevant literature.
9.Awareness and knowledge of congenital cytomegalovirus infection among pregnant women and the general public: a web-based survey in Japan.
Masayuki KOBAYASHI ; Aya OKAHASHI ; Kotoba OKUYAMA ; Naomi HIRAISHI ; Ichiro MORIOKA
Environmental Health and Preventive Medicine 2021;26(1):117-117
BACKGROUND:
The best approach to reduce congenital cytomegalovirus infection (cCMVi) is to practice behaviors that reduce cytomegalovirus (CMV) transmission during pregnancy. Expanding awareness and knowledge of CMV is expected to result in increased practice of preventative behaviors. To this end, it is necessary to understand current awareness and knowledge of CMV.
METHODS:
This web-based cross-sectional survey assessed the awareness and knowledge of cCMVi among pregnant women and the general public in Japan. Participants aged 20-45 years (pregnant and non-pregnant women, and men) were identified from a consumer panel. Study outcomes (all participants) included awareness of cCMVi and other congenital conditions. Among those aware of cCMVi, outcomes included knowledge of CMV transmission routes, long-term outcomes of cCMVi, and behaviors to prevent CMV transmission during pregnancy. Outcomes limited to pregnant women included the practice of preventative behaviors and opinion on how easy it is to implement these behaviors. The data of the pregnant group (pregnant at the time of the survey) were compared with those of the general group (non-pregnant women and men).
RESULTS:
There were 535 participants in the pregnant group and 571 in the general group. Awareness of cCMVi was generally low (pregnant, 16.1%; general, 10.2%). Pregnant participants were significantly more aware of most congenital conditions than those in the general group, including cCMVi (P = 0.004). Knowledge about CMV/cCMVi was limited; there were no significant differences between the two groups for 24 of the 26 knowledge questions. A small proportion (one third or less) of pregnant women practiced behaviors to prevent the transmission of CMV, though most (73.3-95.3%) pregnant women who were aware of cCMVi considered such behaviors easy to implement.
CONCLUSIONS:
Awareness and knowledge of CMV/cCMVi is low among pregnant women in Japan; the level of knowledge is similar to that among the general public. This needs to be improved. Most pregnant women considered behaviors to prevent CMV transmission easy to perform, which indicates that effectively educating pregnant women regarding the long-term outcomes of cCMVi, CMV transmission routes, and preventative behaviors will contribute to a reduced incidence of cCMVi.
TRIAL REGISTRATION
UMIN Clinical Trials Registry, UMIN000041260 .
Cross-Sectional Studies
;
Cytomegalovirus Infections/prevention & control*
;
Female
;
Health Knowledge, Attitudes, Practice
;
Humans
;
Internet
;
Japan/epidemiology*
;
Male
;
Pregnancy
;
Pregnant Women
10.Association between surgical procedures under general anesthesia in infancy and developmental outcomes at 1 year: the Japan Environment and Children's Study.
Yoshiko KOBAYASHI ; Narumi TOKUDA ; Sho ADACHI ; Yasuhiro TAKESHIMA ; Munetaka HIROSE ; Masayuki SHIMA
Environmental Health and Preventive Medicine 2020;25(1):32-32
BACKGROUND:
The neurotoxicity of general anesthesia to the developing human brains is controversial. We assessed the associations between surgery under general anesthesia in infancy and development at age 1 year using the Japan Environment and Children's Study (JECS), a large-scale birth cohort study.
METHODS:
In the JECS, 103,062 pregnancies and 104,065 fetuses were enrolled between January 2011 and March 2014. Of the 100,144 registered live births, we excluded preterm or post-term infants, multiple births, and infants with chromosomal anomalies and/or anomalies of the head or brain. Data on surgical procedures under general anesthesia in infancy were collected from self-administered questionnaires by parents at the 1-year follow-up. Developmental delay at age 1 year was assessed using the Japanese translation of the Ages and Stages Questionnaires, Third Edition (J-ASQ-3), comprising five developmental domains.
RESULTS:
Among the 64,141 infants included, 746 infants had surgery under general anesthesia once, 90 twice, and 71 three or more times. The percentage of developmental delay in the five domains of the J-ASQ-3 significantly increased with the number of surgical procedures. After adjusting for potential confounding factors, the risk of developmental delays in all five domains was significantly increased in infants who had surgery under general anesthesia three times or more (adjusted odds ratios: for communication domain 3.32; gross motor domain 4.69; fine motor domain 2.99; problem solving domain 2.47; personal-social domain 2.55).
CONCLUSIONS:
Surgery under general anesthesia in infancy was associated with an increased likelihood of developmental delay in all five domains of the J-ASQ-3, especially the gross motor domain at age 1 year. The neurodevelopment with the growth should be further evaluated among the children who had surgery under general anesthesia.
TRIAL REGISTRATION
UMIN Clinical Trials Registry (number: UMIN000030786 ).
Anesthesia, General
;
adverse effects
;
Anesthetics, General
;
adverse effects
;
Child Development
;
drug effects
;
Cohort Studies
;
Female
;
Humans
;
Infant
;
Infant, Newborn
;
Japan
;
Male