Journal of Japanese Society for Emergency Medicine
Online ISSN : 2187-9001
Print ISSN : 1345-0581
ISSN-L : 1345-0581
Current issue
Displaying 1-18 of 18 articles from this issue
ORIGINAL ARTICLES
  • Tomomi YOSHINO, Ayumu TSURUOKA, Hiroshi RINKA
    Article type: ORIGINAL ARTICLE
    2025Volume 28Issue 5 Pages 727-734
    Published: October 31, 2025
    Released on J-STAGE: October 31, 2025
    JOURNAL FREE ACCESS

    Aims: There are no specific criteria or protocols for extracorporeal cardiopulmonary resuscitation (ECPR) for out-of-hospital cardiac arrest (OHCA). Our hospital established criteria and protocols to introduce ECPR in August 2018, and in this study, we conducted an investigation on it.

    Method: We retrospectively reviewed 57 cases of OHCA in which ECPR was performed at our hospital from August 2018 to March 2023.

    Results: At the time of discharge, the survival group included 21 patients (37%) and the good neurological prognosis group included 10 patients (28%). The survival group had more cardiac arrests occurring in public places, more cases of ventricular fibrillation (VF)/pulseless ventricular tachycardia (pVT) at arrival, shorter arrival-to-ECPR and call-to-ECPR times, and better pH and pCO2 values on arrival. Patients in the good neurological prognosis group were younger and had more VF/pVT on arrival, shorter call-to-ECPR times, and better pH and pCO2 values on arrival. In addition, specific actions by emergency technicians (EMTs) lengthened the call-to-arrival time.

    Conclusion: Shortening the call-to-ECPR time is important for improving ECPR prognosis. Specific actions by EMTs for VF/pVT on initial electrocardiography lengthen the call-to-arrival time, which is unfavorable. ECPR with a focus on early transport without specific actions by EMTs may lead to improved prognosis.

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  • Naohiro KATAYAMA, Kazuhiro SEKINE
    Article type: ORIGINAL ARTICLE
    2025Volume 28Issue 5 Pages 735-742
    Published: October 31, 2025
    Released on J-STAGE: October 31, 2025
    JOURNAL FREE ACCESS

    The proportion of elderly individuals in Japan is expected to continue rising, suggesting that opportunities for older adults to act as bystanders and perform cardiopulmonary resuscitation (CPR) at home will increase. However, few medical studies in Japan have focused specifically on the quality of chest compressions performed by elderly individuals. This cross-sectional study aimed to examine the relationship between physical characteristics and the depth of chest compressions delivered by older adults. A total of 156 citizens aged 65 and over who participated in a physical fitness assessment in Yasu City, Shiga Prefecture, were enrolled. Participants who achieved an average compression depth of ≥5 cm were classified into the “effective” group, and associations with body weight and grip strength were analyzed. The results indicated that grip strength was significantly associated with effective chest compression, with a cutoff value of 23.1 kg. Body weight was also significantly higher in the effective group, suggesting a contribution to adequate compression depth. These findings imply that grip strength and body weight may serve as key indicators of chest compression quality. Therefore, CPR training and support for elderly individuals should take such physical characteristics into consideration.

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  • Akira KOMORI, Naohiro KUSUNOKI, Takako KAINOH, Katsuhiro NAGATA
    Article type: ORIGINAL ARTICLE
    2025Volume 28Issue 5 Pages 743-751
    Published: October 31, 2025
    Released on J-STAGE: October 31, 2025
    JOURNAL FREE ACCESS
  • Koshi NAKAGAWA, Hideharu TANAKA, Masatoshi KOJIMA, Yasunori TAKEMOTO, ...
    Article type: ORIGINAL ARTICLE
    2025Volume 28Issue 5 Pages 752-758
    Published: October 31, 2025
    Released on J-STAGE: October 31, 2025
    JOURNAL FREE ACCESS
  • Tetsuya SATO, Jumpei TAKAMATSU, Miho ASAHI, Yasuhiko AJIMI, Naoto KADO ...
    Article type: ORIGINAL ARTICLE
    2025Volume 28Issue 5 Pages 759-766
    Published: October 31, 2025
    Released on J-STAGE: October 31, 2025
    JOURNAL FREE ACCESS

    Objective: To analyze how participants of the Prehospital Emergency Medical Evaluation and Care (PEMEC) course perceive its content.

    Methods: A survey was conducted among PEMEC participants from October 2023 to February 2024. Open-ended responses were collected regarding their reasons for overall evaluation and willingness to recommend the course. Text mining was performed using KH Coder software, employing co-occurrence network and correspondence analyses.

    Results: A total of 435 out of 633 participants responded. The analysis revealed that many participants recognized the course as enabling practical use of the PEMEC algorithm in the field and expressed willingness to recommend it to colleagues. In the group that rated the course as “good,” active terms such as “learn,” “think,” and “connect” were frequently observed. Participants with less than 5 years of experience tended to emphasize learning opportunities, those with 5-15 years highlighted practical methods, and those with over 15 years referred to clinical decision-making.

    Conclusion: PEMEC was perceived as a useful educational program for field practice. Future challenges include optimizing educational strategies based on participants’ years of clinical experience.

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  • Daigo MORIOKA, Ryo SAGISAKA, Koshi NAKAGAWA, Ryu MURAKAMI, Hideharu TA ...
    Article type: ORIGINAL ARTICLE
    2025Volume 28Issue 5 Pages 767-777
    Published: October 31, 2025
    Released on J-STAGE: October 31, 2025
    JOURNAL FREE ACCESS
  • Manabu OKI, Joji MIYAKO, Daizoh SAITOH, Hideharu TANAKA
    Article type: ORIGINAL ARTICLE
    2025Volume 28Issue 5 Pages 778-784
    Published: October 31, 2025
    Released on J-STAGE: October 31, 2025
    JOURNAL FREE ACCESS

    Objective: This study aimed to clarify the characteristics and prehospital management of isolated facial injury cases in Japan.

    Methods: A retrospective cohort study was conducted using data from the Japan Trauma Data Bank between January 2019 and December 2022. Descriptive analyses were performed on patient demographics, injury sites, prehospital interventions, and length of hospital stay.

    Results: Of 133,384 registered cases, 1,013 met the criteria for isolated facial injuries and were included in the analysis. The most common mechanism of injury was blunt trauma (n = 926, 91.4%). The eye was the most frequently injured site (n = 342, 23.0%). Prehospital interventions included cervical collar application in 276 cases (27.7%) and backboard use in 229 cases (23.0%). Hospital stays of 1-7 days were most common (n = 550, 54.3%).

    Conclusion: We clarified the background and trends of isolated facial trauma cases in Japan. Further consideration is needed regarding measures tailored to the characteristics of patients and methods to prevent secondary damage, with a view to improving the prognosis and functional recovery of patients with facial trauma.

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RESEARCHES
CASE REPORT
  • Tomona TAKAHASHI, Kyosuke MATSUNAGA, Jungo HONDA, Naruaki OTAKE, Jushi ...
    Article type: CASE REPORT
    2025Volume 28Issue 5 Pages 834-840
    Published: October 31, 2025
    Released on J-STAGE: October 31, 2025
    JOURNAL FREE ACCESS

    Segmental arterial mediolysis (SAM) often causes intra-abdominal or retroperitoneal hemorrhage, but rarely gastrointestinal (GI) bleeding. A man in his 60s had melena 10 days prior and was subsequently transferred to a local emergency hospital 4 days prior because of immobility. Severe anemia was diagnosed, and contrast-enhanced computed tomography revealed a suspected hematoma around the pancreas and duodenum. Although upper GI endoscopy was performed, no obvious bleeding was observed. Consequently, the patient was transferred to our emergency center for further investigation. Angiography performed on the same day revealed an anterior inferior pancreaticoduodenal artery with an aneurysm and narrow irregular vessels, which was considered as a hemorrhage caused by SAM. Arterial embolization was performed, and hemostasis was achieved. No progression of anemia or rebleeding was observed after embolization; therefore the patient was transferred to his attending physician on the second day of his illness. In this case, the intestinal wall distal to the duodenum was thinning at the site of an extensive aneurysm, which ruptured and caused duodenal bleeding. This case indicates that SAM may be a possible cause for upper GI bleeding in which the source of bleeding cannot be identified by GI endoscopy, especially bleeding beyond the duodenum.

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RAPID PUBLICATION
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