1.Clinical Evaluation of Atrioventricular Myocardial Pacing on Left or Biventricular Sites
Shigeru Sakamoto ; Junichi Matsubara ; Toshiaki Matsubara ; Yasuhiro Nagayoshi ; Hisateru Nishizawa ; Shinji Shono ; Masaaki Kanno ; Katsunori Takeuchi ; Toshimichi Nonaka ; Yasuhisa Noguchi
Japanese Journal of Cardiovascular Surgery 2003;32(4):234-239
Multisite pacing has recently been available as a new treatment for patients with congestive heart failure. This study was intended to evaluate the effects of atrioventricular myocardial pacing on left or biventricular sites. Eleven patients (4 men, 7 women) who had undergone atrioventricular myocardial pacing between January 2000 and April 2002 were selected for this study. They ranged in age from 24 to 74 years (mean age 58.5 years). The diagnosis was dilated cardiomyopathy in 3 patients, ischemic cardiomyopathy in 4, complete atrioventricular heart block in 2, sick sinus syndrome in 1, and atrial fibrillation with bradycardia in 1. The method of pacemaker implantation was atrioventricular myocardial pacing on left or biventricular sites by means of mini-thoracotomy under general anesthesia. A DDD-R pacemaker was used. When biventricular pacing was employed, the ventricular pacing lead was cut, connected with a Y adapter, and implantation was made biventricularly. We analyzed pre- and postoperative hemodynamic states by means of a Swan-Ganz catheter, and clinical course (NYHA class). There was a significant difference between pre- and postoperative clinical course and hemodynamic state. The atrioventricular myocardial pacing on left or biventricular sites was a useful method of improving the clinical course and hemodynamic state. It is concluded that this method is available as a new therapeutic option in patients with congestive heart failure.
2.Mechanism of Ischemic Mitral Regurgitation.
Yutaka OTSUJI ; Robert A LEVINE ; Masaaki TAKEUCHI ; Ryuzo SAKATA ; Chuwa TEI
Journal of Cardiovascular Ultrasound 2008;16(1):1-8
No abstract available.
Mitral Valve Insufficiency
3.Analysis and Avoidance of Errors in Insulin Administration by Means of Quality Control (QC) Methods
Atsushi MIURA ; Fumi AOKI ; Hiroki MOMOI ; Kunimichi YANAGISAWA ; Keiko OOI ; Masaaki OOHASHI ; Reiko TAKEUCHI ; Yumiko KOBAYASHI ; Yumi SASAKI ; Teruaki OOKURA ; Osamu ATOBE
Journal of the Japanese Association of Rural Medicine 2008;57(5):719-725
The Saku Central Hospital classified muscular relaxants, potassium products and the like as “high-risk medicines”, but when it came to insulin, did not take any standardized measure against it to prevent accidents. Having organized a team of personnel from a wide variety of job, our hospital has recently carried out a campaign for improvements in medical care. With pharmacists playing a leading role, we grappled with measures for the prevention of errors in the administration of insulin using quality control (QC) methods. As a consequence, the campaign served to decrease the number of medical mistakes. As there still occur many incidents involving medication, the role played in risk management by pharmacists remains significant. In future, pharmacists will hopefully play a constructive role in risk management to prevent medical incidents involving medical supplies. That said, a campaign for improvements inmedical care through the practical use of QC methods seems likely to bring about favorable results.
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4.Association between ligamentous stenosis at spondylolisthetic segments before fusion surgery and symptomatic adjacent canal stenosis at follow-up in patients with degenerative spondylolisthesis
Yosuke OISHI ; Eiichiro NAKAMURA ; Masaaki MURASE ; Katsumi DOI ; Yoshinori TAKEUCHI ; Jun-ichi HAMAWAKI ; Akinori SAKAI
Asian Spine Journal 2024;18(3):425-434
Methods:
In total, 76 patients participated in this case-control study (neurologically symptomatic adjacent canal stenosis, n=33; neurologically asymptomatic cases at follow-up, n=43). Their risk factors during surgery and magnetic resonance (MR) images before the surgery and at follow-up were evaluated. Data from the two groups (n=25 each) were matched using propensity scores for age, sex, time to MR imaging at follow-up, surgical procedure, and LF hypertrophy in adjacent segments before the surgery and analyzed.
Results:
Compared with the asymptomatic group, the symptomatic adjacent canal stenosis group had a significantly larger LF area/spinal canal area in the spondylolisthetic segments before the surgery. During the follow-up periods (in months), they had a larger LF area/ spinal canal area in the adjacent segments: the two values were significantly correlated. The sensitivity, specificity, and positive and negative predictive values for determining symptomatic adjacent canal stenosis were high compared with on the cutoff value for the LF area/spinal canal area at the spondylolisthetic segments before the surgery. These results were the same after matching.
Conclusions
Symptomatic adjacent canal stenosis is mainly caused by LF hypertrophy. Ligamentous stenosis at the spondylolisthetic segments before fusion surgery might be strongly associated with symptomatic adjacent canal stenosis at follow-up.
5.Prevalent morphometric vertebral fractures as a risk factor for subsequent clinical vertebral fractures after shortfusion surgery in older Japanese women with degenerative spondylolisthesis
Yosuke OISHI ; Eiichiro NAKAMURA ; Keiji MURAMATSU ; Masaaki MURASE ; Katsumi DOI ; Yoshinori TAKEUCHI ; Jun-ichi HAMAWAKI ; Akinori SAKAI
Asian Spine Journal 2024;18(3):435-443
Methods:
The study enrolled a total of 237 older female patients: 50 and 187 patients had prevalent morphometric VFs (VF [+] group) and nonprevalent morphometric VFs (VF [−] group), respectively. The time to subsequent clinical VFs after fusion surgery was compared between the two groups using the Kaplan-Meier method. Moreover, 40 and 80 patients in the VF (+) and VF (−) groups, respectively, were analyzed and matched by propensity scores for age, follow-up duration, surgical procedure, number of fused segments, body mass index, and number of patients treated for osteoporosis.
Results:
Kaplan-Meier analysis indicated that the VF (+) group had a higher incidence of subsequent clinical VFs than the VF (−) group, and Cox regression analysis showed that the presence of prevalent morphometric VFs was an independent risk factor for subsequent clinical VFs before matching. Kaplan-Meier analysis demonstrated comparable results after matching.
Conclusions
The presence of prevalent morphometric VFs may be a risk factor for subsequent clinical VFs in older women with degenerative spondylolisthesis who underwent short-fusion surgery.
6.Clinical features of very early-onset inflammatory bowel disease in Japan: a retrospective single-center study
Masaaki USAMI ; Ichiro TAKEUCHI ; Reiko KYODO ; Yuri HIRANO ; Kosuke KASHIWAGI ; Hiroki FUJIKAWA ; Hirotaka SHIMIZU ; Toshinao KAWAI ; Katsuhiro ARAI
Intestinal Research 2022;20(4):475-481
Background/Aims:
Very early-onset inflammatory bowel disease (VEO-IBD), defined as IBD diagnosed in patients younger than 6 years, is a challenge for pediatric gastroenterologists. Although there have been reports regarding VEO-IBD in Western countries, those in Asia are still lacking. This study aimed to investigate the clinical features of Japanese VEO-IBD patients.
Methods:
Patients with VEO-IBD diagnosed between 2006 and 2019 were evaluated retrospectively. The disease phenotypes were classified into ulcerative colitis type (UC-type) and Crohn’s disease type (CD-type), and the clinical features and courses were compared between the phenotypes.
Results:
Overall, 54 VEO-IBD patients (19 patients with UC-type and 35 patients with CD-type) were evaluated. The median age at onset was 18 months. One patient had severe combined immunodeficiency (SCID), and 9 patients had monogenic IBD. Monogenic IBD was more prevalent in the CD-type patients with perianal disease (CD-type (PD)). The age at onset was significantly lower in the CD-type group (P<0.05). The most common initial symptom was bloody stools (70%), followed by diarrhea (63%), weight loss (24%), fever (20%), and perianal disease (20%). Excluding patients with SCID and monogenic IBD, 23 out of 44 patients (52%) required biologics. The biologics were switched in 11 out of 44 patients (25%), and the majority of these patients (82%) were in the CD-type group. Overall, 9 patients (20%) required intestinal resection or ostomy placement.
Conclusions
CD-type tends to occur at an earlier age, and monogenic IBD occurs significantly more frequently in CD-type (PD). Disease severity and treatment should be individualized, owing to the disease heterogeneity.
7.Endoscopic Findings and Treatment of Gastric Neoplasms in Familial Adenomatous Polyposis
Chihiro SATO ; Kazuya TAKAHASHI ; Hiroki SATO ; Takumi NARUSE ; Nao NAKAJIMA ; Masafumi TAKATSUNA ; Ken-ichi MIZUNO ; Satoru HASHIMOTO ; Manabu TAKEUCHI ; Junji YOKOYAMA ; Masaaki KOBAYASHI ; Shuji TERAI
Journal of Gastric Cancer 2022;22(4):381-394
Purpose:
Gastric neoplasia is a common manifestation of familial adenomatous polyposis (FAP). This study aimed to elucidate the clinical characteristics, endoscopic features including fundic gland polyposis (FGPsis), and treatment outcomes of gastric neoplasms (GNs) in patients with FAP.
Materials and Methods:
A total of 35 patients diagnosed with FAP, including nine patients from four pedigrees who underwent esophagogastroduodenoscopy (EGD), were investigated regarding patient characteristics, GN morphology, and treatment outcomes.
Results:
Twenty-one patients (60.0%) had 38 GNs; 33 (86.8%) and 5 (13.2%) were histologically diagnosed with adenocarcinoma and adenoma, respectively. There were no specific patient characteristics related to GNs.Nodule-type GNs were more prevalent in patients with FGP than without (52.2% vs. 0.0%, P=0.002) in the upper body of the stomach. Conversely, depressed-type GNs were fewer in patients with FGPsis than in those without (13.0% vs. 73.3%, P<0.001). Slightly elevated-type GNs were observed in both groups (34.8% vs. 20.0%, P=0.538). Even within pedigrees, the background gastric mucosa and types of GNs varied. In total, 24 GNs were treated with endoscopic submucosal dissection (ESD) and eight with endoscopic mucosal resection (EMR). EMR was selected for GNs with FGPsis because of the technical difficulty of ESD, resulting in a lower en bloc resection rate (62.5% vs. 100%, P=0.014).
Conclusions
Our study indicates the necessity of routine EGD surveillance in patients diagnosed with FAP. Notably, the morphology and location of GNs differed between patients with and without FGPsis. Endoscopic treatment and outcomes require more attention in cases of FGPsis.
8.Features and Outcomes of Children with Ulcerative Colitis who Undergo a Diagnostic Change: A Single-Center Experience
Natsuki ITO ; Ichiro TAKEUCHI ; Reiko KYODO ; Yuri HIRANO ; Takuro SATO ; Masaaki USAMI ; Hirotaka SHIMIZU ; Toshiaki SHIMIZU ; Katsuhiro ARAI
Pediatric Gastroenterology, Hepatology & Nutrition 2021;24(4):357-365
Purpose:
A change in diagnosis from ulcerative colitis (UC) to Crohn's disease (CD) has been reported in pediatric inflammatory bowel disease; however, only a few clinical characteristics and predictors of this diagnostic change have been reported. We aimed to describe the clinical characteristics of patients with UC who underwent a change in diagnosis to CD and identify variables associated with the change.
Methods:
The medical records of pediatric patients with UC who were followed up at the National Center for Child Health and Development between 2006 and 2019 were retrospectively reviewed. Clinical data on disease phenotype, laboratory parameters, endoscopic findings, and treatment of patients whose diagnosis changed to CD (cCD) were compared to those of patients whose diagnosis remained UC (rUC).
Results:
Among the 111 patients initially diagnosed with UC, 11 (9.9%) patients were subsequently diagnosed with CD during follow-up. There was no significant difference between the cCD and rUC groups in terms of sex, age at initial diagnosis, and the extent and severity of disease at initial diagnosis. Albumin and hemoglobin levels were significantly lower in the cCD group than in the rUC group. The proportion of patients who required biologics was significantly higher in the cCD group than in the rUC group (p<0.05).
Conclusion
Approximately 10% children initially diagnosed with UC were subsequently diagnosed with CD. Hypoalbuminemia and anemia at initial diagnosis and use of biologics could be predictors of this diagnostic change.
9.Features and Outcomes of Children with Ulcerative Colitis who Undergo a Diagnostic Change: A Single-Center Experience
Natsuki ITO ; Ichiro TAKEUCHI ; Reiko KYODO ; Yuri HIRANO ; Takuro SATO ; Masaaki USAMI ; Hirotaka SHIMIZU ; Toshiaki SHIMIZU ; Katsuhiro ARAI
Pediatric Gastroenterology, Hepatology & Nutrition 2021;24(4):357-365
Purpose:
A change in diagnosis from ulcerative colitis (UC) to Crohn's disease (CD) has been reported in pediatric inflammatory bowel disease; however, only a few clinical characteristics and predictors of this diagnostic change have been reported. We aimed to describe the clinical characteristics of patients with UC who underwent a change in diagnosis to CD and identify variables associated with the change.
Methods:
The medical records of pediatric patients with UC who were followed up at the National Center for Child Health and Development between 2006 and 2019 were retrospectively reviewed. Clinical data on disease phenotype, laboratory parameters, endoscopic findings, and treatment of patients whose diagnosis changed to CD (cCD) were compared to those of patients whose diagnosis remained UC (rUC).
Results:
Among the 111 patients initially diagnosed with UC, 11 (9.9%) patients were subsequently diagnosed with CD during follow-up. There was no significant difference between the cCD and rUC groups in terms of sex, age at initial diagnosis, and the extent and severity of disease at initial diagnosis. Albumin and hemoglobin levels were significantly lower in the cCD group than in the rUC group. The proportion of patients who required biologics was significantly higher in the cCD group than in the rUC group (p<0.05).
Conclusion
Approximately 10% children initially diagnosed with UC were subsequently diagnosed with CD. Hypoalbuminemia and anemia at initial diagnosis and use of biologics could be predictors of this diagnostic change.