1.Consideration of Timing for Temporary Pacemaker Wires Removal after Heart Valve Surgery
Tomoaki MASUDA ; Atsushi AOKI ; Tadashi OMOTO ; Kazuto MARUTA ; Akitoshi TAKAZAWA
Japanese Journal of Cardiovascular Surgery 2026;55(1):1-6
Backgrounds: Previously, we routinely removed pacemaker wires (PW) one week after heart valve surgery, however, we have changed to remove PW on the second postoperative day in order to prevent retrograde infection. The purpose of this study was to clarify the clinical benefits of earlier PW removal. Subjects/Methods: Overall 133 patients were reviewed and a comparative study was conducted between the two groups; late group (n=48) and early group (n=85). Results: There were no significant differences in age, gender, body physique, diabetes, preoperative dialysis, operation time, cardiopulmonary bypass time, or cross-clamp time between the two groups. C-reactive protein was significantly lower in the early group at both 1 and 2 weeks postoperatively, Leukocyte was also significantly lower in the early group at 2 weeks, and the frequency of fever of 38 degrees Celsius or higher, frequency of additional antibiotic treatment, and the frequency of diagnosis of postoperative infection were also significantly lower in the early group. Platelet counts on the day of removal were significantly lower in the early group, however PT-INR was significantly lower in the early group, and the frequency of pericardial drainage tended to be lower in the early group. Among the cases in the early removal whose PW were removed on the second day, only one patient required pacing for transient complete atrioventricular block during hospitalization. Conclusions: After valve surgery, in patients who did not require pacing by the second postoperative day, removing the pacemaker wires on the second day might prevent postoperative infection, without increasing the need for pericardial drainage or a temporary pacing catheter. It was considered appropriate to remove the lead on the second postoperative day in cases where pacing was not required until the second postoperative day.
2.Two Cases of Inflammatory Bowel Disease Successfully Maintained in Remission with Kampo Decoction rather than Extract Formulations
Ryutaro ARITA ; Akiko KIKUCHI ; Rie ONO ; Minoru OHSAWA ; Shin TAKAYAMA ; Tadashi ISHII
Kampo Medicine 2025;76(1):28-34
Inflammatory bowel disease (IBD) is a chronic inflammatory condition of unknown etiology characterized by recurrent periods of remission and relapse. Despite standard treatments, several patients continue to experience symptoms, such as abdominal pain, diarrhea, bloody stools, and inflammation of the intestinal mucosa. This report presents two cases of patients with IBD who achieved remission using Kampo decoctions instead of extract formulations. Case 1 involved a man in his forties with Crohn’s disease. He remained in remission for four years after receiving treatment with aminosalicylic acid and a Kampo decoction following partial resection of the small intestine. However, when he switched to an extract formulation with the same content as the decoction, he experienced worsened diarrhea and bloody stool. The patient’s symptoms and inflammatory markers improved following a comprehensive Kampo medical evaluation and administration of a decoction of daikenchuto and hochuekkito. Case 2 involved a woman in her forties with ulcerative colitis who had been in remission for four years with infliximab and a Kampo decoction consisting of hochuekkito, shimotsuto, and keishibukuryogan. However, four months after changing to an extract formulation with the same ingredients as the decoction, the patient experienced erosion of the rectal mucosa and bloody stool. After returning to the decoction and adding mesalazine suppositories, her symptoms improved. These cases suggest that Kampo decoctions may be useful in maintaining IBD remission, particularly when extracts are not significantly effective.
3.Issues and Improvements in the Management of Multicenter Research as Discovered Through the Practice of Clinical Research Coordinator (CRC)
Akiko KUWABARA ; Shin TAKAYAMA ; Ryutaro ARITA ; Rie ONO ; Natsumi SAITO ; Satoko SUZUKI ; Yoshiyasu MURAKAMI ; Minoru OHSAWA ; Akiko KIKUCHI ; Tadashi ISHII
Kampo Medicine 2025;76(1):35-45
Tohoku University Hospital served as the research office for two projects of Kampo medicine treatment: an observational study and a randomized controlled study on Coronavirus Disease 2019 led by the Japanese Society for Oriental Medicine. We review the practical operations together with the results of a questionnaire survey conducted after the completion of the studies, and discuss issues and areas for improvement in the management of the multicenter research office. Questionnaire 1 surveyed the participants’ impressions and opinions of the implementation system and responses at the research-sharing facilities, as well as future issues. Comments on observational studies were dichotomized into “no particular problems” and “difficulties.” In the randomized controlled trial, most respondents answered, “It was difficult to understand the administrative procedures for specific clinical research.” Questionnaire 2 surveyed the status of clinical research support staff, their impressions and opinions of being entrusted with the work, and future issues. We were able to collect opinions about impressions, issues, and areas for improvement from a variety of perspectives. Looking back at the summary of the questionnaire survey and the practical experience, smooth promotion of research is expected through appropriate research planning and system construction, as well as improvement of research support skills.
4.Effects of Moxibustion Stimulation on ST36 (Zusanli) Before Exercise on Respiratory Metabolism During Incremental Exercise
Tomohiro IGUCHI ; Tadashi WATSUJI
Journal of the Japan Society of Acupuncture and Moxibustion 2025;75(3):354-366
[Introduction] Moxibustion on ST36 (Zusanli) has been traditionally practiced and is expected to improve endurance capacity. Therefore, this study investigated the effects of moxibustion stimulation on ST36 before exercise on respiratory metabolism during incremental exercise.[Subjects and Methods] The study included 14 healthy adult males who provided informed consent. A randomized crossover design was employed, with a Moxa period and a Cont (control) period. During the Moxa period, three sessions of moxibustion stimulation (Takashima, Senefa Co.) were applied to bilateral ST36 daily for three consecutive days before the exercise. Incremental exercise loading was performed using a bicycle ergometer. Respiratory metabolism was evaluated at ventilatory threshold (VT), respiratory compensation point (RC), and peak exercise (Peak). Oxidative stress markers, including the degree of oxidative stress (d-ROMs) and antioxidant potential (BAP), were also measured.[Results] During the Moxa period, significant increases (P < 0.05) were observed in Peak exercise parameters compared to the Cont period, including time to exhaustion (Time), ventilation (V・E), workload (Watt), oxygen uptake (V・O2), carbon dioxide production (V・CO2), and oxygen uptake per body weight (V・O2/W). No significant differences in oxidative stress markers (d-ROMs and BAP) were observed between the two periods. However, within the Cont period, a significant increase (P <0.05) in d-ROMs was observed between pre- and post-exercise measurements.[Discussion] At peak, the Time during the Moxa period was prolonged by 5.8% compared to the Cont period, and V・O2/W increased by 4.7%. These results suggest that moxibustion stimulation enhanced aerobic energy metabolism, improved exercise tolerance, and increased overall endurance capacity. Enhancing antioxidant activity before exercise appears to be beneficial. Based on the oxidative stress dynamics observed within each period, it is suggested that moxibustion stimulation may have suppressed significant increases in oxidative stress before and after exercise, potentially contributing to improved endurance.
5.A Case of Cardiac Papillary Fibroelastoma Located in Left Atrial Appendage and Cerebral Embolism
Kyohei KAWASAKI ; Takuya MIYAZAKI ; Minoru YOSHIDA ; Tadashi ISOMURA
Japanese Journal of Cardiovascular Surgery 2025;54(2):61-63
Cardiac papillary fibroelastoma (PFE) is a benign cardiac tumor that mainly occurs in the valve leaflets of the left heart. The patient was a 72-year-old man diagnosed with cerebral infarction. Contrast-enhanced computed tomography and transesophageal echocardiography revealed a 12-mm mass in the left atrial appendage (LAA), and we decided to undergo emergency cardiac tumor resection due to embolism onset. Postoperative pathological examination revealed an extremely rare cardiac PFE originating in the LAA.
6.Low Ki-67 labeling index is a clinically useful predictive factor for recurrence-free survival in patients with papillary thyroid carcinoma
Takashi MASUI ; Katsunari YANE ; Ichiro OTA ; Kennichi KAKUDO ; Tomoko WAKASA ; Satoru KOIKE ; Hirotaka KINUGAWA ; Ryuji YASUMATSU ; Tadashi KITAHARA
Journal of Pathology and Translational Medicine 2025;59(2):115-124
We report a new risk stratification of invasive stage papillary thyroid carcinomas (PTCs) by combining invasive status, using extrathyroid invasion (Ex) status, and tumor growth speed using the Ki-67 labeling index (LI). Methods: We examined tumor recurrence in 167 patients with PTC who were surgically treated at the Kindai University Nara Hospital between 2010 and 2022. The patients were classified according to the degree of invasion [negative (Ex0) or positive (Ex1, Ex2, and Ex3)] and tumor growth speed expressed with Ki-67 LI, as low (<5%) or high (>5%). This study confirmed previous findings that the disease-free survival (DFS) rate in PTCs significantly differed between patients with a high and low Ki-67 index. Results: When combining Ex status (negative or positive) and Ki-67 proliferation status (low or high), the DFS rate of invasion in the negative, low Ki-67 LI group was only 1.1%, while that of invasion in the positive, high Ki-67 LI was 44.1%. This study reports for the first time that recurrence risks can be stratified accurately when combining carcinoma’s essential two features of extrathyroid invasion status and tumor growth speed. Conclusions: We believe the evidence for low tumor recurrence risk may contribute to use of more conservative treatment options for invasive-stage PTCs and help alleviate patient anxiety about tumor recurrence and death.
7.Low Ki-67 labeling index is a clinically useful predictive factor for recurrence-free survival in patients with papillary thyroid carcinoma
Takashi MASUI ; Katsunari YANE ; Ichiro OTA ; Kennichi KAKUDO ; Tomoko WAKASA ; Satoru KOIKE ; Hirotaka KINUGAWA ; Ryuji YASUMATSU ; Tadashi KITAHARA
Journal of Pathology and Translational Medicine 2025;59(2):115-124
We report a new risk stratification of invasive stage papillary thyroid carcinomas (PTCs) by combining invasive status, using extrathyroid invasion (Ex) status, and tumor growth speed using the Ki-67 labeling index (LI). Methods: We examined tumor recurrence in 167 patients with PTC who were surgically treated at the Kindai University Nara Hospital between 2010 and 2022. The patients were classified according to the degree of invasion [negative (Ex0) or positive (Ex1, Ex2, and Ex3)] and tumor growth speed expressed with Ki-67 LI, as low (<5%) or high (>5%). This study confirmed previous findings that the disease-free survival (DFS) rate in PTCs significantly differed between patients with a high and low Ki-67 index. Results: When combining Ex status (negative or positive) and Ki-67 proliferation status (low or high), the DFS rate of invasion in the negative, low Ki-67 LI group was only 1.1%, while that of invasion in the positive, high Ki-67 LI was 44.1%. This study reports for the first time that recurrence risks can be stratified accurately when combining carcinoma’s essential two features of extrathyroid invasion status and tumor growth speed. Conclusions: We believe the evidence for low tumor recurrence risk may contribute to use of more conservative treatment options for invasive-stage PTCs and help alleviate patient anxiety about tumor recurrence and death.
8.Association between maternal distress during pregnancy and lower 5-min-Apgar score of the offspring: the Japan Environment and Children's Study.
Gita Nirmala SARI ; Satoyo IKEHARA ; Kanami TANIGAWA ; Yoko KAWANISHI ; Ehab S ESHAK ; Tadashi KIMURA ; Tomotaka SOBUE ; Hiroyasu ISO
Environmental Health and Preventive Medicine 2025;30():25-25
BACKGROUND:
Although the influence of maternal distress during pregnancy on newborn Apgar scores has been studied in various populations, there is limited research specifically addressing this issue among Asian women. This study of Japanese women aims to investigate the association between maternal distress during pregnancy and the risk of a low 5-min-Apgar score among newborns.
METHODS:
We analyzed data from 87,765 mother-newborn pairs in the Japan Environment and Children's Study. Using multivariable logistic regression, we estimated odds ratios (OR) and 95% confidence intervals (CI) for low Apgar scores (<7) at 5 minutes about maternal distress during early and mid-late pregnancy, as measured by the Kessler Psychological Distress Scale (K6). Apgar scores were obtained from newborns' medical records.
RESULTS:
A higher risk of low Apgar score in newborns at 5 minutes was found in mothers with moderate to severe distress than in those with low distress during mid-late pregnancy. The adjusted OR (95% CI) was 1.22 (1.05-1.42) for moderate distress (K6 = 5-12) and 1.42 (1.00-2.01) for severe distress compared to low distress (p for trend = 0.002). The positive association between maternal distress and the risk of low Apgar score was observed in preterm birth (<37 weeks) and low birth weight (<2,500 g) but not in term birth and normal birth weight.
CONCLUSION
Maternal distress during mid-late pregnancy was positively associated with the risk of low Apgar score of newborns, specifically in preterm birth and low birth weight.
Humans
;
Female
;
Pregnancy
;
Japan/epidemiology*
;
Apgar Score
;
Infant, Newborn
;
Adult
;
Stress, Psychological/epidemiology*
;
Male
;
Young Adult
;
Pregnancy Complications/epidemiology*
;
Mothers/psychology*
;
Risk Factors
9.Association between TV/DVD screen exposure time at age 1 and risk of chronic constipation at age 3: the Japan Environment and Children's Study.
Masashi HOTTA ; Satoyo IKEHARA ; Makiko TACHIBANA ; Kazuko WADA ; Junji MIYAZAKI ; Tadashi KIMURA ; Ryo KAWASAKI ; Hiroyasu ISO
Environmental Health and Preventive Medicine 2025;30():80-80
BACKGROUND:
Chronic constipation is a long-term problem that decreases children's quality of life. Information and communication technology devices have developed rapidly in recent decades and have had various impacts on children. This prospective cohort study examined the association between television/digital versatile disc (TV/DVD) screen exposure time at age 1 and the risk of chronic constipation at age 3.
METHODS:
Data from 63,697 infants in the Japan Environment and Children's Study (JECS) were analyzed. We divided participants into five groups according to TV/DVD exposure time per day: no exposure (0 h), short exposure (<1 h), middle exposure (1.0-<2.0 h), long exposure (2.0-<4.0 h), and very long exposure (≥4 h). Logistic regression analysis was performed to assess the association between TV/DVD exposure time and the risk of constipation. For logistic regression analysis, odds ratios (ORs) were adjusted for sex, parents' education, household income, nursery school, feeding contents, and obesity. The interaction between the sexes was also examined.
RESULTS:
The prevalence of constipation for males, females, and all participants at age 3 was 9.3, 11.0, and 10.1%, respectively. The TV/DVD screen time distribution per day at age 1 was 10.6% for none, 34.1% for short, 29.9% for middle, 19.2% for long, and 6.2% for the very long exposure group. After adjusting for confounding factors, a dose-response pattern was identified between TV/DVD exposure time and constipation in all participants (p for trend < 0.001). The adjusted ORs increased progressively in the short (OR 1.15, 95% confidence interval [CI] 1.04-1.27), middle (OR 1.22, 95% CI 1.11-1.35), long (OR 1.37, 95% CI 1.24-1.52), and very long exposure groups (OR 1.53, 95% CI 1.35-1.74). This association was not significantly different between the sexes (p for interaction = 0.36).
CONCLUSIONS
Longer TV/DVD exposure time at age 1 was associated with the risk of chronic constipation at age 3. Excessive screen exposure may need to be avoided from infancy to decrease the risk of chronic constipation in later years.
Humans
;
Constipation/etiology*
;
Male
;
Female
;
Japan/epidemiology*
;
Television/statistics & numerical data*
;
Child, Preschool
;
Infant
;
Screen Time
;
Prospective Studies
;
Risk Factors
;
Chronic Disease/epidemiology*
;
Prevalence
10.Low Ki-67 labeling index is a clinically useful predictive factor for recurrence-free survival in patients with papillary thyroid carcinoma
Takashi MASUI ; Katsunari YANE ; Ichiro OTA ; Kennichi KAKUDO ; Tomoko WAKASA ; Satoru KOIKE ; Hirotaka KINUGAWA ; Ryuji YASUMATSU ; Tadashi KITAHARA
Journal of Pathology and Translational Medicine 2025;59(2):115-124
We report a new risk stratification of invasive stage papillary thyroid carcinomas (PTCs) by combining invasive status, using extrathyroid invasion (Ex) status, and tumor growth speed using the Ki-67 labeling index (LI). Methods: We examined tumor recurrence in 167 patients with PTC who were surgically treated at the Kindai University Nara Hospital between 2010 and 2022. The patients were classified according to the degree of invasion [negative (Ex0) or positive (Ex1, Ex2, and Ex3)] and tumor growth speed expressed with Ki-67 LI, as low (<5%) or high (>5%). This study confirmed previous findings that the disease-free survival (DFS) rate in PTCs significantly differed between patients with a high and low Ki-67 index. Results: When combining Ex status (negative or positive) and Ki-67 proliferation status (low or high), the DFS rate of invasion in the negative, low Ki-67 LI group was only 1.1%, while that of invasion in the positive, high Ki-67 LI was 44.1%. This study reports for the first time that recurrence risks can be stratified accurately when combining carcinoma’s essential two features of extrathyroid invasion status and tumor growth speed. Conclusions: We believe the evidence for low tumor recurrence risk may contribute to use of more conservative treatment options for invasive-stage PTCs and help alleviate patient anxiety about tumor recurrence and death.


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