1.Intentional transit practice through a nearby hospital for remote area emergencies provides earlier primary care than helicopter emergency medical services alone in rural emergencies: a single-center, observational study
Katsutoshi SAITO ; Tomohiro ABE ; Rina TANOHATA ; Takehiko NAGANO ; Hidenobu OCHIAI
Journal of Rural Medicine 2025;20(2):92-101
Objective: Providing emergency care to serious patients in rural areas remains challenging. Intentional transit practice involves transporting a serious patient to a nearby hospital while requesting the Helicopter Emergency Medical Services (HEMS). This study aims to evaluate its effectiveness on earlier primary medical interventions and the decision of the destination hospital.Patient and Methods: We conducted a single-center, retrospective observational study at a HEMS base hospital in a rural area of Japan. The study participants included patients who underwent the intentional transit practice between April 2012 and March 2019. We compared actual times to estimated times for each case treated with the HEMS alone (HEMS-alone model). Outcomes were the time from ambulance call to reaching the physician (physician reaching time), arrival at the final destination facility (destination hospital arrival time), and helicopter waiting time at the landing zone (helicopter waiting time). Subgroup analyses by region and an analysis of the relationship between diagnostic tests performed at the transit hospital and the type of destination facility were performed.Results: Eighty-seven patients were eligible for analysis. Compared to the HEMS-alone model, the intentional transit practice reduced the physician reaching time (median [interquartile] min) (26 [21–32] vs. 37 [29–47], P<0.0001) while increasing the destination hospital arrival time and the helicopter waiting time (71 [58–93] vs. 65 [59–80], P=0.03; 24 [18–34] vs. 19 [18–21], P<0.0001; respectively). Subgroup analysis showed a consistent result for physician reaching time but heterogeneity in the other time courses by region. Diagnostic tests were related to transportation to facilities other than the HEMS base hospital.Conclusion: The intentional transit practice is beneficial for providing primary care earlier than the HEMS alone and for transport to more specific facilities. However, it delays arrival at the destination facility and increases helicopter waiting time.
2.Right Atrial Approach for Ventricular Septal Perforation
Daiki HIRAYAMA ; Susumu MANABE ; Norihisa YUGE ; Tomohiro SAITO
Japanese Journal of Cardiovascular Surgery 2023;52(3):159-162
An 84-year-old man visited a local doctor, complaining of general fatigue for the last 2 months and dyspnea at rest since the last few days. His echocardiogram revealed a defect hole measuring 1.5 cm at the base of the ventricular septum and left-to-right shunt blood flow. The diagnosis of ventricular septal perforation due to subacute myocardial infarction was confirmed, and an emergency surgery was performed. A right atrial oblique incision revealed a perforation just below the tricuspid valve septal apex. The perforation site was closed using the sandwich patch technique with two bovine pericardial membrane patches. The patient was transferred to the hospital for rehabilitation on day 18 postoperatively.
3.Current Understanding and Future Perspectives of Interstitial Cystitis/Bladder Pain Syndrome
Tomohiro UEDA ; Philip M. HANNO ; Ryoichi SAITO ; Jane M. MEIJLINK ; Naoki YOSHIMURA
International Neurourology Journal 2021;25(2):99-110
Interstitial cystitis/bladder pain syndrome (IC/BPS) is a chronic disease characterized by suprapubic pain and lower urinary tract symptoms. Perhaps because of the heterogeneous nature of this disease and its multifactorial etiology, clinical trials in allinclusive populations of IC/BPS patients without phenotyping in the last decade have mainly failed to discover new therapeutic modalities of IC/BPS. Thus, phenotyping IC/BPS, aimed at identifying bladder-centric and/or bladder-beyond pathologies, including cystoscopic observation of Hunner or non-Hunner lesions of the bladder mucosa, is particularly important for the future of IC/BPS management. Based on recent discussions at international conferences, including the International Consultation on IC, Japan, it has been proposed that Hunner-lesion IC should be separated from other non-Hunner IC/BPS because of its distinct inflammatory profiles and epithelial denudation compared with non-Hunner IC/BPS. However, there are still no standard criteria for the diagnosis of Hunner lesions other than typical lesions, while conventional cystoscopic observations may miss atypical or small Hunner lesions. Furthermore, diagnosis of the bladder-centric phenotype of IC/BPS requires confirmation that identified mucosal lesions are truly a cause of bladder pain in IC/BPS patients. This review article discusses the current status of IC/BPS pathophysiology and diagnosis, as well as future directions of the proper diagnosis of bladder-centric IC/BPS, in which pathophysiological mechanisms other than those in inflammatory pathways, such as angiogenic and immunogenic abnormalities, could also be involved in both Hunner-lesion IC and non-Hunner IC/BPS. It is hoped that this new paradigm in the pathophysiological evaluation and diagnosis of IC/BPS could lead to pathology-based phenotyping and new treatments for this heterogeneous disease.
4.Current Understanding and Future Perspectives of Interstitial Cystitis/Bladder Pain Syndrome
Tomohiro UEDA ; Philip M. HANNO ; Ryoichi SAITO ; Jane M. MEIJLINK ; Naoki YOSHIMURA
International Neurourology Journal 2021;25(2):99-110
Interstitial cystitis/bladder pain syndrome (IC/BPS) is a chronic disease characterized by suprapubic pain and lower urinary tract symptoms. Perhaps because of the heterogeneous nature of this disease and its multifactorial etiology, clinical trials in allinclusive populations of IC/BPS patients without phenotyping in the last decade have mainly failed to discover new therapeutic modalities of IC/BPS. Thus, phenotyping IC/BPS, aimed at identifying bladder-centric and/or bladder-beyond pathologies, including cystoscopic observation of Hunner or non-Hunner lesions of the bladder mucosa, is particularly important for the future of IC/BPS management. Based on recent discussions at international conferences, including the International Consultation on IC, Japan, it has been proposed that Hunner-lesion IC should be separated from other non-Hunner IC/BPS because of its distinct inflammatory profiles and epithelial denudation compared with non-Hunner IC/BPS. However, there are still no standard criteria for the diagnosis of Hunner lesions other than typical lesions, while conventional cystoscopic observations may miss atypical or small Hunner lesions. Furthermore, diagnosis of the bladder-centric phenotype of IC/BPS requires confirmation that identified mucosal lesions are truly a cause of bladder pain in IC/BPS patients. This review article discusses the current status of IC/BPS pathophysiology and diagnosis, as well as future directions of the proper diagnosis of bladder-centric IC/BPS, in which pathophysiological mechanisms other than those in inflammatory pathways, such as angiogenic and immunogenic abnormalities, could also be involved in both Hunner-lesion IC and non-Hunner IC/BPS. It is hoped that this new paradigm in the pathophysiological evaluation and diagnosis of IC/BPS could lead to pathology-based phenotyping and new treatments for this heterogeneous disease.
5.A Case of Cryptococcosis with a Large Lung Mass
Tomohiro MORIYA ; Takuya SHINMURA ; Naoki KAWAKAMI ; Yoko WAKAI ; Kazuhito SAITO
Journal of the Japanese Association of Rural Medicine 2019;67(5):591-
In many patients with pulmonary cryptococcosis, chest radiographs show solitary or multiple nodular shadows, but pulmonary cryptococcosis with a large mass is rare. A previously healthy 45-year-old man presented to the hospital complaining of fever and cough. Contrast-enhanced computed tomography showed a tumor shadow with a long diameter of 64 mm in the lower lobe of the right lung. We considered the possibility of a lung abscess, but because it was refractory to antibiotics, we suspected the possibility of a malignant tumor. Transbronchial biopsy was performed, and Cryptococcus neoformans was detected. There were no complications of meningitis or immune deficiency, including acquired immune deficiency syndrome. He was administered antifungal drugs, and shrinkage of the shadow was achieved. Pulmonary cryptococcosis should also be considered when a large lung mass is observed.
6.Usefulness of Endoscopic Transpapillary Tissue Sampling for Malignant Biliary Strictures and Predictive Factors of Diagnostic Accuracy.
Hiroki TANAKA ; Shimpei MATSUSAKI ; Youichirou BABA ; Yoshiaki ISONO ; Tomohiro SASE ; Hiroshi OKANO ; Tomonori SAITO ; Katsumi MUKAI ; Tetsuya MURATA ; Hiroki TAOKA
Clinical Endoscopy 2018;51(2):174-180
BACKGROUND/AIMS: It is sometimes difficult to distinguish between malignant and benign biliary strictures using imaging studies alone, and pathological diagnosis is necessary. The aim of this study was to determine the usefulness of endoscopic transpapillary tissue sampling and factors predictive of diagnostic accuracy. METHODS: From April 2008 to December 2014, 136 patients underwent endoscopic transpapillary tissue sampling for malignant biliary strictures. The cytological and histological findings were reported as negative, suspicious, or positive. Suspicious and positive findings were defined as pathologically positive. RESULTS: The sensitivity was 65.0% for forceps biopsy, 49.5% for brush cytology, 46.2% for bile aspiration cytology, and 21.9% for endoscopic nasobiliary drainage cytology. The combination of these procedures improved the sensitivity (72.8%). Endoscopic transpapillary tissue sampling was more sensitive for lesions of biliary origin (91.4%) than for extrabiliary lesions (66.3%). In surgical cases, the sensitivity for tumors with an infiltrative growth pattern (53.3%) was significantly lower than for a tumor with an expanding or intermediate growth pattern (87.5%). CONCLUSIONS: Combining procedures can improve diagnostic accuracy. It may be possible to predict the sensitivity of endoscopic transpapillary tissue sampling by evaluating the etiology and tumor growth pattern using preoperative imaging studies.
Bile
;
Biliary Tract Neoplasms
;
Biopsy
;
Constriction, Pathologic*
;
Diagnosis
;
Drainage
;
Humans
;
Pancreatic Neoplasms
;
Surgical Instruments
7.Effectiveness of combined aerobic and resistance training circuit on daily physical activity among community-dwelling older people
Shuichi Obuchi ; Hisashi Kawai ; Seigo Mitsutake ; Saori Anzai ; Tomohiro Inomata ; Hikaru Saito ; Hitomi Tsuda ; Tomoharu Nakajima
Japanese Journal of Physical Fitness and Sports Medicine 2015;64(3):305-314
The purpose of this study was to determine the effectiveness of combined aerobic and resistance training circuit on daily physical activity, motor function, and health-related QOL among community-dwelling women aged over 65. Of 102 subjects recruited from the local community, 60 met the inclusion criteria. The subjects were randomly divided into two groups: intervention and control. The intervention group was asked to participate in 60 minutes of combined aerobic and resistance training circuit three times a week for 3 months, while the control group was asked to participate in a study circle once a month for 3 months. Daily physical activity was measured by an activity monitor, and questionnaire, physical functioning, and health related QOL were measured before and after intervention. Daily physical activity as measured by the activity monitor increased significantly in the intervention group but not in the control group, although daily physical activity as measured by questionnaire did not significantly differ between groups. Distance walked over 6 minutes significantly increased in the intervention group than in the control group. No significant difference was found in health related QOL between groups. We conclude that combined aerobic and resistance training circuit is effective for increasing daily activity in community-dwelling older women and for enhancing physical function.
8.Gastric Adenocarcinoma with Thymic Metastasis after Curative Resection: A Case Report.
Tomoyuki MATSUNAGA ; Hiroaki SAITO ; Kozo MIYATANI ; Seigo TAKAYA ; Yoji FUKUMOTO ; Tomohiro OSAKI ; Masahide IKEGUCHI
Journal of Gastric Cancer 2014;14(3):207-210
The peritoneum is the most frequent site of recurrence for gastric cancer after gastrectomy, followed by the liver and lymph nodes. In contrast, metastasis to the thymus is rare. Annual surveillance with computed tomography was performed on a 67-year-old man who previously underwent a distal gastrectomy and D2 lymph node dissection for gastric cancer at Tottori University. Five years after the initial operation, an anterior mediastinal tumor was detected by computed tomography. The patient underwent video-assisted thoracic surgery to remove the tumor. Histopathology revealed adenocarcinoma cells similar to those of the gastric cancer resected 5 years previously. Thymic metastasis was considered likely based on the location of the tumor. The recognition that gastric cancer can metastasize to unusual anatomic locations, such as the thymus, can facilitate an accurate, prompt diagnosis and appropriate treatment.
Adenocarcinoma*
;
Aged
;
Diagnosis
;
Gastrectomy
;
Humans
;
Liver
;
Lymph Node Excision
;
Lymph Nodes
;
Neoplasm Metastasis*
;
Peritoneum
;
Recurrence
;
Stomach Neoplasms
;
Thoracic Surgery, Video-Assisted
;
Thymus Gland
9.Replacement of the Aortic Root and Ascending Aorta for Acute Aortic Dissection in a Patient with Liver Cirrhosis (Child-Pugh Class B) and Hepatic Cell Carcinoma
Koki Nakamura ; Mikiko Murakami ; Tomohiro Asai ; Yosuke Saito ; Hiroki Yamaguchi
Japanese Journal of Cardiovascular Surgery 2007;36(1):15-18
A 62-year-old man was referred to us because of acute aortic dissection (Stanford type A). He had had liver cirrhosis (Child-Pugh class B) and hepatic cell carcinoma in the left lateral lobe, which had been resected 3 years ago. On admission he was drowsy and was in shock. CT showed dissection from the ascending aorta to the abdominal aorta. Echocardiography revealed severe aortic regurgitation. An emergency operation was indicated although it was a very high risk procedure. Under cardiopulmonary bypass with moderate hypothermia, the aortic root was replaced with a Freestyle valve (23mm). Then the ascending aorta was replaced with a woven Dacron graft (28mm) under cardiac arrest and isolated cerebral perfusion. Postoperatively, he had cardiac tamponade and cerebral infarction (perhaps due to the preoperative events). However, he was successfully discharged on the 34th postoperative day.
10.Acute Aortic Dissection Occurring on the Day after Coronary Artery Bypass Operation
Koki Nakamura ; Yuji Suda ; Yosuke Saito ; Mikiko Murakami ; Tomohiro Asai ; Hiroki Yamaguchi
Japanese Journal of Cardiovascular Surgery 2007;36(4):215-217
A 73-year-old woman was referred to our hospital for angina pectoris due to triple-vessel-disease. She underwent off-pump coronary artery bypass grafting ×3 (RITA-LAD, LITA-OM, SV-PDA). Her vital signs were stable during the operation and the postoperative status was steady in the ICU. However, on the next day, she suddenly had severe back pain with markedly elevated blood pressure. Urine output immediately shut down and respiratory failure progressed with time. An enhanced CT scan revealed aortic dissection (DeBakey type I and Stanford type A). An emergency operation was performed via re-sternotomy. Cardiopulmonary bypass was initiated and the body was cooled down to 20°C. Under circulatory arrest with isolated cerebral perfusion, the ascending aorta was replaced using a one-branched Hemashield graft (26mm in diameter). The entry of the dissection was located at the proximal anastomosis site of the vein graft. The postoperative course was uneventful and she was discharged on the 24th postoperative day.


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