1.Effectiveness and long term safety of gabapentin in the management of neuropathic pain of terminally-ill cancer patients
Kengo Imai ; Masayuki Ikenaga ; Tomoyuki Kodama
Palliative Care Research 2010;6(1):101-108
Purpose: This study is aimed at the evaluation of the effectiveness and safety of gabapentin for the management of cancer-related neuropathic pain in terminally-ill cancer patients. Methods: We investigated terminally-ill cancer patients prescribed gabapentin for the management of cancer-related neuropathic pain, from November 200X to October 200X+2. We assessed average daily pain on the numerical rating scale (NRS) before administration, after one week, and while on a stable dose. Result: 44 patients were enrolled during this period and 19 patients completed the study. The medication and the survival period on average were 52.0 and 67.2 days, respectively. The average gabapentin daily dose after one week was 358 mg. The average period needed to reach a stable dose was 11.6 days and the average stable daily dose was 463 mg (male 620 mg, female 289 mg). The mean NRS decreased from 5.7 (before) to 2.1 (after one week, p<0.001) and 1.9 (stable dose, p<0.001), respectively. 57.9% of patients showed side effects, somnolence in 52.6%, delirium in 5.3%, tremor in 5.3%. Conclusion: Gabapentin can be expected to be effective and safe for managing cancer-related neuropathic pain for a long period even when in critical condition through careful titration. Palliat Care Res 2011; 6(1): 101-108
2.The Clinical Significance of Acupuncture in Rheumatoid Arthritis
Masayuki IMAI ; Shigeo NIWA ; Masanori KURODA ; Tadao MITSUI ; Tomokazu HATTORI
Journal of the Japan Society of Acupuncture and Moxibustion 1982;32(2):60-64
Introduction
Taking the GSR to acupoints in rheumatoid arthritis, we observed the following 3 points: the comparison between rheumatoid arthritis and osteoarthritis, the relativity between the clinical symptoms and acupoints, and the effect of acupuncture on the pathema.
Method
Using an apparatus “Memorador Model F-532”, we measured the GSR to SP-3, LV-3, BL-64, GB-40, ST-42, ST-36 and SP-6 together with a check on this symptom and hemanalysis.
Effect
The GSR in rheumatoid arthritis was higher than the other. The GSR in active rheumatoid arthritis was lower than the inactive. It was showed that there were significant differences in KI-3 (significance level under 5%) and SP-6 (under 1%).
Conclusion
We assumed that the pathema might be dependent on the condition of their acupoints. Acupuncture gave a good effect on rheumatoid arthritis.
3.Effectiveness of the etiology-based antiemetic recommendations by a palliative care team for nausea in cancer patients
Kengo Imai ; Masayuki Ikenaga ; Tomoyuki Kodama ; Lena Kamura ; Keiko Tamura ; Megumi Takeohara ; Tomoko Takashita ; Tatsuya Morita
Palliative Care Research 2014;9(2):108-113
Purpose: To clarify the effect of a palliative care team intervention for nausea of cancer patients. Methods: The study participants were all cancer patients who were referred to a palliative care team in Yodogawa Christian Hospital in 2010, and had nausea with score 2 or over of the Support Team Assessment Schedule Japanese version (STAS-J). The causes of nausea were classified into 4 categories. Etiology-based antiemetic medications were recommended, and the intensities of nausea were assessed using the STAS-J on the day of referral, and 7 days after. Result: Among 27 patients were recruited for this study, 24 were assessed 7 days after. Nine patients had chemically induced nausea, eight had impaired gastric emptying, four had vestibular and central nervous system disturbance, and three had bowel obstruction. The mean STAS-J score significantly decreased from 3.0 (SD, 0.55) on the day of referral to 1.1 (0.80) after 7 days (p<0.001). Two patients had mild drowsiness. Conclusion: The recommendations of etiology-based antiemetics by the palliative care team may be effective for managing nausea in cancer patients.
4.Evaluation of Predictive Accuracy between Two Types of Vancomycin TDM Analysis Software
Shungo Imai ; Takehiro Yamada ; Ayako Nishimura ; Hiromitsu Oki ; Masayuki Kumai ; Takenori Miyamoto ; Kumiko Kasashi ; Ken Iseki
Japanese Journal of Drug Informatics 2015;16(4):169-178
Objective: To attain optimal blood concentration rapidly, it is needed to perform initial dose setting appropriately when vancomycin (VCM) used. In order to design initial dose settings of VCM more currently, we compared the predictive performance of two types of VCM therapeutic drug monitoring (TDM) analysis software retrospectively.
Method: We utilized two TDM analysis software, SHIONOGI-VCM-TDM ver.2009 (VCM-TDM) and “Vancomycin MEEK TDM analysis software Ver. 2.0” (MEEK), based on patient’s background. 112 patients who received VCM and performed TDM were analyzed during the period from October 2011 through September 2012 and compared the actual trough level with the predictive trough level. The predictive performance was evaluated by calculating ME (mean prediction error), MAE (mean absolute prediction error), and RMSE (root mean squared error). Age, gender, and a renal function were evaluated as patient’s background.
Results: VCM-TDM gave good predictive performance for patients overall. When classified patient’s background complexly (sex, age, and renal function), as for male patients, VCM-TDM showed good predictive performance except for the group over 65 years old and CCr over 85 mL/min. For female patients, the difference of predictive performance was not accepted by all groups.
Conclusion: These results suggest, for male patients, we should use VCM-TDM for initial dose settings except for the group over 65 years old and over CCr 85 mL/min. For the other patients, we consider that both of software can be used. These new findings seem to contribute to proper dosage settings of VCM.
5.Нойр булчирхайн хорт хавдрын мэс засал эмчилгээ
Akira Chikamoto ; Shinya Abe ; Daisuke Hashimoto ; Katsunori Imai ; Hidetoshi Nitta ; Hiromitsu Hayashi ; Masayuki Watanabe ; Takatoshi Ishiko, ; Toru Beppu ; Hideo Baba
Innovation 2013;7(3):11-15
Pancreatic cancer is the fifth leading cause of cancer-related death in Japan. Surgical treatment is the effective way to achieve a long survival. Because of the development of surgical procedure and perioperative management, pancreatic surgery becomes safer. However, it still includes a certain number of morbidities and mortalities. It is important to perform safe operation for long survival. We herein introduce our operative procedure for pancreatic surgery including pancreaticoduodenectomy (PD) and distal pancreatectomy. In patients undergoing PD, leakage from the pancreatic anastomosis remains an important cause of morbidity and contributes to prolonged hospitalization and mortality. Recently, a new end-to-end pancreatojejunostomy technique without the use of any stitches through the pancreatic texture or pancreatic duct has been developed. In this novel anastomosis technique, the pancreatic stump is first sunk into deeply and tightened with a purse string in the bowel serosa. We modified this method in an end-to-side manner to complete the insertion of the pancreatic stump into the jejunum, independent of the size of the pancreas or the jejunum. Since April 2013, we have performed this new anastomosis technique in 36 patients. The breakdown of preoperative diagnosis of 36 patients were 13 pancreatic cancers, 8 extrahepatic bile duct cancers, 7 intraductal papillary mucinous neoplasms and so on. Of 36 PD, 32 were subtotal stomach preserving PD (SSPPD), and the rest were SSPPD combined with left hemihepatectomy or distal pancreatectomy, and middle pancreatectomy. The concentration of amylase in discharged fluid through an abdominal drain decreased day by day. According to the ISGPF definition, pancreatic fistula (PF) was observed in 4 patients (11%). Of 4, only 1 case had grade C PF. This case had a hemorrhage from pancreatic cut end. This occurred probably because the pancreatic cut end was not compressed by the intestinal wall with this technique. This case had reoperation and the hemostasis of pancreatic cut end was secured. The other severe complications were not observed. This new method can be performed safely and is expected to reduce the occurrence of leakage from PD. The development of PF following distal pancreatectomy is an unsolved problem. We introduce a simple technique, the parallel suturing technique, which prevents severe PF by hand-sewn closure of the pancreatic stump. After standard distal pancreatectomy in the described cases, the main pancreatic duct was secured. The stump of the pancreatic remnant was closed with three nonabsorbable monofilament sutures. The three sutures were positioned about 3 mm proximal to the cut end of the pancreas and tied parallel to the pancreatic stump. Ascites fluid was collected through a drain tube, and its concentration of amylase was measured on days 1, 2, 3, and 4 postoperatively. PF was diagnosed according to the ISGPF classification. On postoperative day 4, three patients were categorized as having grade A PF, six were diagnosed with no PF, and the drain tubes of the remaining three were removed on day 3. This simple technique may effectively lighten the severity of PF following distal pancreatectomy. It may have a particular advantage in patients with a wide pancreatic stump.
6.Risk Factors for Delirium after Spine Surgery: An Age-Matched Analysis
Tadao MORINO ; Masayuki HINO ; Shintaro YAMAOKA ; Hiroshi MISAKI ; Tadanori OGATA ; Hiroshi IMAI ; Hiromasa MIURA
Asian Spine Journal 2018;12(4):703-709
STUDY DESIGN: A retrospective cohort study. PURPOSE: To investigate the risk factors for postoperative delirium after spine surgery, excluding older age, which has already been established as a strong risk factor. OVERVIEW OF LITERATURE: More than 30 risk factors have been reported for delirium after spine surgery, making it challenging to identify which factors should be prioritized. We hypothesized that risk factors could not be prioritized to date because the factor of older age is very strong and influenced other factors. To eliminate the influence of older age, we performed an age-matched group comparison analysis for the investigation of other risk factors. METHODS: This study involved 532 patients who underwent spine surgery. Two patients of the same age without delirium (delirium negative group) were matched to each patient with delirium (delirium positive group). Differences in suspected risk factors for post-operative delirium between the two groups identified from previous reports were analyzed using univariate analysis. Multivariate analysis was performed for factors that showed a significant difference between the two groups in the univariate analysis. RESULTS: Fifty-nine (11.1%) of 532 patients developed postoperative delirium after spine surgery. Large amounts of intraoperative bleeding, low preoperative concentration of serum Na, high postoperative (day after surgery) serum level of C-reactive protein, low hematocrit level, low concentration of albumin, and high body temperature were detected as significant risk factors in the univariate analysis. Large amounts of intraoperative bleeding remained a risk factor for postoperative delirium in the multivariate analysis. CONCLUSIONS: We should pay attention to and take precautions against the occurrence of postoperative delirium after spine surgery in patients of older age or those who experience severe intraoperative bleeding.
Body Temperature
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C-Reactive Protein
;
Cohort Studies
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Delirium
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Hematocrit
;
Hemorrhage
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Humans
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Multivariate Analysis
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Retrospective Studies
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Risk Factors
;
Spine
7.New endoscopic ultrasonography techniques for pancreaticobiliary diseases.
Ken KAMATA ; Masayuki KITANO ; Shunsuke OMOTO ; Kumpei KADOSAKA ; Takeshi MIYATA ; Kosuke MINAGA ; Kentaro YAMAO ; Hajime IMAI ; Masatoshi KUDO
Ultrasonography 2016;35(3):169-179
Endoscopic ultrasonography (EUS) is widely used to evaluate pancreaticobiliary diseases, especially pancreatic masses. EUS has a good ability to detect pancreatic masses, but it is not sufficient for the differential diagnosis of various types of lesions. In order to address the limitations of EUS, new techniques have been developed to improve the characterization of the lesions detected by EUS. EUS-guided fine needle aspiration (EUS-FNA) has been used for diagnosing pancreatic tumors. In order to improve the histological diagnostic yield, a EUS-FNA needle with a core trap has recently been developed. Contrast-enhanced harmonic EUS is a new imaging modality that uses an ultrasonographic contrast agent to visualize blood flow in fine vessels. This technique is useful in the diagnosis of pancreatic solid lesions and in confirming the presence of vascularity in mural nodules for cystic lesions. EUS elastography analyzes several different variables to measure tissue elasticity, color patterns, and strain ratio, using analytical techniques such as hue-histogram analysis, and artificial neural networks, which are useful for the diagnosis of chronic pancreatitis and pancreatic cancer.
Biliary Tract
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Biopsy, Fine-Needle
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Diagnosis
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Diagnosis, Differential
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Elasticity
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Elasticity Imaging Techniques
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Endoscopic Ultrasound-Guided Fine Needle Aspiration
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Endosonography*
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Needles
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Pancreas
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Pancreatic Neoplasms
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Pancreatitis, Chronic
8.The current education program in all medical schools in Japan
Nobuo Nara ; Hiroshi Ito ; Masaaki Ito ; Miyuki Ino ; Yutaka Imai ; Masaru Kawasaki ; Keijiro Saku ; Toshiya Suzuki ; Mitsuru Seishima ; Takuzo Hano ; Saburo Horiuchi ; Masayuki Matsushita ; Atsushi Miyamoto ; Rika Moriya ; Masao Yamada ; Hitoshi Yokoyama
Medical Education 2016;47(6):363-366
The education program in all medical schools in Japan has been studied and analyzed every 2 years since 1974 by the curriculum committee of the Association of Japan Medical Colleges. Based on the most recent analysis in 2015, the marked innovation of medical education, such as an integrated curriculum, active learning, and clinical clerkship, was recognized.
9.Comparison of Imaging Findings Between Plain CT and Ultrasonography in Acute Abdomen
Masamitsu TAKAGI ; Kanako KIRIYAMA ; Masaharu MIWA ; Shinsuke IMAI ; Masayuki ONOE ; Teruo MAEDA
Journal of the Japanese Association of Rural Medicine 2023;72(4):314-318
In recent years, plain X-ray CT has often been the first choice for imaging examination of acute abdomen in emergency medical settings. Ultrasound examination depends on the skill of the operator and the findings are subjective. However, we often experience cases in which more information can be obtained by abdominal ultrasonography than by plain CT. In this report, we describe two cases in which ultrasonography and plain CT imaging were performed in patients with right lower abdominal pain due to suspected abscess formation around the cecum. In the future, policies to reduce medical costs such as community healthcare initiatives may progress, and the number of facilities with high-priced medical equipment such as X-ray CT may decrease. Ultrasonography provides more information than simple CT examination, so we believe that ultrasonography should be the first choice for diagnostic imaging of acute abdomen. Therefore, it is important for those involved in ultrasonography to continuously acquire knowledge and scanning techniques.