1.Light Stability of Cyclosporin Fine Granules after Packaging
Shingo Yamazaki ; Hiroyoshi Nakamura ; Shin-ichi Yamagata ; Hiromitsu Nakasa ; Noritaka Ariyoshi ; Mitsukazu Kitada
Japanese Journal of Drug Informatics 2012;14(1):35-39
Objective: The objective of this study was to clarify the light stability of cyclosporin fine granules 17%?? Mylan ??(CsA-FG) after packaging by a dividing and packing machine.
Methods: CsA-FG packaged within cellophane-laminate paper was stored under three different covering conditions: (stored uncovered, in a medicine bag, or in a light shielding bag). In these covering conditions, we examined changes in the residual rate and elution pattern of CsA for up to 12 weeks in the differently covered samples stored at room temperature under fluorescent lighting.
Results: Under the light exposure condition, the residual rate decreased with time and fell below 95 percent at 12th week. Although a slight decline in the residual rate was observed in samples stored in the medicine bag at 12th week, the rate was less than 5%. On the other hand, no change in the residual rate was observed for samples stored in the light shielding bag storage for up to 12 weeks. There was no change in the elution pattern of CsA in any group, except the decline in the elution rate caused as the resulting from the decline in the residual rate.
Conclusion: In this study, we have clarified that the packaged CsA-FG covered by stored in a medicine bag or light shielding bag is stable for up to 12 weeks under normal storage conditions. However, CsA-FG should be stored in a light shielding bag or undergo the split dispensation, if it’s stored in a more severe lighting condition and/or if it is to be stored for more than three months.
2.Assessment of abdominal visceral fat measured by dual bioelectrical impedance analysis in rugby football players
Chiaki Yamashita ; Kayoko Yamazaki ; Yuri Kanesada ; Takashi Miyawaki ; Reiko Nakayama ; Shingo Okazaki ; Naoko Komenami
Japanese Journal of Physical Fitness and Sports Medicine 2015;64(2):251-259
Visceral fat accumulation is a notable risk factor in the incidence of lifestyle-related diseases such as metabolic and circulatory disorders. In this study, we measured visceral fat area (VFA) and subcutaneous fat area (SFA) in rugby football players by using dual bioelectrical impedance analysis, as well as other metabolic and circulatory parameters. A total of 28 male players (15 forwards, 13 backs; mean age±SD: 23±4 years) participated in this study. VFA and SFA were significantly correlated with body weight. Thus, heavier players had higher VFA and SFA as well as higher body weight. In addition, VFA was significantly correlated with various blood parameters such as alanine aminotransferase, gamma-glutamyl transpeptidase, and triglyceride. Six of the 28 players met the criteria for visceral obesity, defined as both body mass index ≥25 kg/m2 and VFA ≥100 cm2. In some of these players, blood parameters such as high-density lipoprotein cholesterol <40 mg/dL, triglyceride ≥150 mg/dL, or systolic blood pressure ≥130 mmHg indicated elevated risk for metabolic syndrome. These findings suggest that in athletes like heavier rugby football players, abdominal visceral fat accumulation may indicate risk of lifestyle-related diseases.
3.Hemolytic Anemia after Mitral Valve Surgery
Yuki Kuroda ; Kenji Minakata ; Kazuhiro Yamazaki ; Hisashi Sakaguchi ; Shingo Hirao ; Shinya Takimoto ; Kazuhisa Sakamoto ; Tomohiro Nakata ; Tadashi Ikeda ; Ryuzo Sakata
Japanese Journal of Cardiovascular Surgery 2016;45(2):67-72
Objective : The aim of this study is to describe a series of patients undergoing reoperation due to hemolytic anemia after mitral valve surgery and assess the mechanisms and surgical outcomes. Methods : Between 2009 and 2014, we performed redo mitral valve surgery in 11 patients who had refractory hemolytic anemia after mitral valve surgery at Kyoto University Hospital. The mean age of the patients was 72.2±6.8 years old, and there were 5 men. Results : Preoperative echocardiography demonstrated that only 3 patients had ≥ grade 3 mitral regurgitation (MR), the rest of the patients had only mild to moderate MR. The mechanisms of severe hemolysis included paravalvular leakage (PVL) after mitral valve replacement (MVR) in 8 patients, structural valve deterioration (SVD) after MVR using a bioprosthesis in one, and residual/recurrent mitral regurgitation after mitral valve plasty (MVP) in two. All the patients except one (re-MVP) underwent MVR. The mean interval between previous operation and current operation was 14.1±9.4 years in post-MVR cases, and 2.0±1.9 years in post-MVP cases. There were three late deaths, one of which was due to cardiac death (exacerbation of heart failure due to pneumonia). There was one patient who required re-MVR for recurrent hemolysis due to PVL after MVR. Conclusion : Although hemolytic anemia after mitral valve surgery is rare, it often requires reoperation regardless of the degree of MR at late follow-up period. Thus, patients after mitral valve surgery should be carefully followed-up.
4.A report on 8 years of activities of a student organization promoting advanced cardiac life support techniques at Keio University
Kazuma Kobayashi ; Yuichi Tamura ; Keita Hayashi ; Waki Segami ; Yuichiro Ohta ; Kenta Kawasaki ; Kiyotaka Yasui ; Motoyasu Yamazaki ; Michito Hirakata ; Takahiro Amano ; Haruo Kashima ; Shingo Hori
Medical Education 2011;42(6):347-350
1)The Keio ACLS Popularizing and Promoting Association (KAPPA) is an official student organization that promotes advanced life support techniques.
2)KAPPA has provided 29 advanced cardiac life support courses, including 20 official ICLS (immediate cardiac life support) courses of the Japanese Association for Acute Medicine, which have trained 314 ICLS providers and 61 ICLS instructors during the past 8 years.
3)Peer–led training among students to maintain the quality of the courses has contributed to the activities of KAPPA.
5.Perioperative Oral Functional Management of Hematopoietic Stem Cell Transplantation
Akio YASUI ; Shoichiro KITAJIMA ; Hisanobu MARUO ; Shingo TAKEI ; Naoko OWAKI ; Yuma SUZUMURA ; Harumi MIZUTANI ; Emi SAWAKI ; Mariko MIZOGUCHI ; Yuna KATO ; Hikaru OGAWA ; Akio KOHNO ; Megumi OI ; Kazumasa NAKANE ; Sayuri YAMAZAKI ; Tetsuya ANDO
Journal of the Japanese Association of Rural Medicine 2016;65(4):766-779
Hematopoietic stem cell transplantation (HSCT) involves the administration of anticancer treatment at high doses that exceed the patient’s maximum required dose for total body irradiation, to eliminate malignancy and achieve myeloablation. Hematopoietic stem cells are then transfused to re-establish the lost hematopoietic function. The use of radiation, anticancer drugs, and immunosuppressive drugs can cause adverse events in the oral cavity such as mucositis, bleeding, opportunistic infections, and graft versus host disease. This collaborative report by the departments of hematology and oncology as well as dentistry and oral surgery at our institution discusses the perioperative oral functional management of patients undergoing HSCT. Subjects enrolled were 191 transplantation patients (52 autologous, 139 allogeneic) between 2008 and 2015. The subjects underwent professional tooth cleaning before commencing a transplant conditioning regimen. When the professional oral health care (POHC) treatment was completed, professional tooth cleaning (PTC), professional mechanical tooth cleaning (PMTC), and treatment with a dental drug delivery (3DS) system were provided. This perioperative oral functional management resulted in a decrease in the frequency of oropharyngeal candidiasis from 19.3% to 4.3%. We devised a standardized supportive oral care program from the preoperative period onward to minimize adverse oral events associated with HSCT. The program could effectively improve the quality of life of patients undergoing HSCT.
6.Prevention of SSI in Cardiac Surgery by Using Intraoperative Measures for High-Risk Patients as Standard Precautions against Mediastinitis
Shingo TAGUCHI ; Makoto HANAI ; Masataka YAMAZAKI ; Makoto SUMI ; Humitake MOMOKAWA
Japanese Journal of Cardiovascular Surgery 2022;51(2):80-88
Background : Risk factors for surgical site infection (SSI) are thought to include poorly controlled diabetes mellitus, dialysis, and a long operating time, but patients without risk factors can also develop infection. Therefore, it is possible that SSI could be prevented by routinely using the precautions against SSI developed for high-risk patients. We investigated the route and pathogenetic mechanism of mediastinitis, which is the most frequent SSI after cardiac surgery. We hypothesized that mediastinitis occurred when the deep sternal marrow was contaminated by skin bacteria. Based on this hypothesis, we investigated the efficacy of various intraoperative prophylactic methods for preventing mediastinitis. Methods : We evaluated 658 patients undergoing cardiac surgery at our institution between April 2011 and July 2016. They were classified into two groups. Group C comprised 406 patients who received standard insertion of a sternal retractor after sternotomy. Group S was 252 patients in whom a retractor was inserted after covering the sternal marrow with oxidized cellulose hemostats and belt-like thin towels, with surplus parts of the towels being used to fill subcutaneous dead space at the superior and inferior margins of the midline wound. We investigated the following 10 risk factors for mediastinitis: diabetes (HbA1c≥7.5), renal failure (Cr≥2), smoking, obesity (BMI≥30), reoperation, urgent/emergency operation, intubation in the preoperative period, long operating time (≥8 h), reopening the chest for hemostasis, and coronary artery bypass grafting (CABG). Factors associated with mediastinitis were determined using univariate modeling analysis followed by multi-variate logistic regression analysis. Results : Mediastinitis occurred in 13 patients (2.0%). The significant risk factor for mediastinitis were urgent/emergency operation and CABG, but 1 patient had no risk factors. A univariate analysis showed statistical significance in CABG, presence of maneuver covering the sternal marrow, JapanSCORE-II in mortality and deep sternum infection (DSI). Reopening the chest for hemostasis, CABG, aortic aneurysm, plural risk factors, and JapanSCORE-II in DSI were identified as a risk factor by multiple logistic regression, not all factors showed a significant difference. Mediastinitis only occurred in group C, and it was significantly less frequent in group S with additional precautions against infection including propensity score matching analysis (p<0.05). Conclusion : When the bone marrow of the transected sternum was covered tightly to protect it from contamination by skin bacteria during cardiac surgery, the frequency of postoperative mediastinitis was significantly reduced.