The difficulty of nuclear emergency prevention measures during natural disasters: ongoing challenges in Japan.

It is crucial to anticipate nuclear emergency scenarios and implement effective measures. Japan's climate and topography make it vulnerable to natural disasters; thus, it is necessary to address compounding and cascading disaster scenarios involving the simultaneous occurrence of natural and nuclear disasters. On 1 January 2024, an earthquake hit the Noto region of Ishikawa Prefecture, resulting in damage to the area around the Shika Nuclear Power Plant, located 90 km from the epicenter. This earthquake revealed that, in the event of a complex disaster, it is possible that residents living within 30 km of the Shika Nuclear Power Plant will be completely unprepared for a nuclear disaster. In the event of a complex disaster, it is crucial to implement appropriate countermeasures while balancing responses to both nuclear and natural disasters and optimizing radiation disaster prevention measures.

Challenges when going on excursions with children with medical complexity in Japan.

BACKGROUND: With advances in medical technology, the number of children with medical complexity (CMC) has increased. Excursions with such children encourage their social participation and have been shown to have a positive impact on their caregivers. However, the first-hand experience of the excursions has not yet been evaluated regarding the difficulties faced by CMC and their caregivers during preparation, transportation, and in the local area. METHODS: Semi-structured interviews were conducted with eight informal and eight formal caregivers of CMC who attended an excursion to Tokyo Disney Land (TDL) via video conference. We investigated challenges that they had experienced through the excursion, performing inductive thematic analysis. RESULTS: Three themes were identified: the preparation stage (Theme 1), problems encountered while traveling to the theme park (Theme 2), and problems at the theme park (Theme 3). In the preparation stage, three subthemes, i.e. preparation for the trip, cooperation with related parties, and researching about the theme park and asking for help, are reported. Theme 2 includes four subthemes: activities of daily living, respiratory care, luggage, and weather changes. Theme 3 has three subthemes: activities of daily living, physical condition management, and issues for the theme parks. CONCLUSIONS: We found that securing the power supply, location, and time for daily procedures are challenges in realizing excursions for CMC, but with sufficient preparation, it is possible in Japan without major difficulty.

Emotional impacts of excursions on parents of children with medical complexity.

BACKGROUND: Parents of children with medical complexity (CMC) have extra child-raising responsibilities because of the time commitments necessary for care, and their social participation is often compromised. Experiencing leisure excursions with such children may be a solution to some of these problems but the first-hand experience of excursions in regard to their psychological impact on the caregivers of CMC remains to be appraised. METHODS: Semi-structured interviews were conducted, via video conference, with eight informal and eight formal caregivers of CMC who attended an excursion to Tokyo Disney Land (TDL). We investigated the psychological changes that they had experienced through the excursion, performing inductive thematic analysis. RESULTS: Three themes were identified among parents and five were identified among medical professionals. Themes reported by the parents were: Increased trust in the public and society (Theme 1); confidence for other challenges (Theme 2), and connection with other parents in the non-medical settings (Theme 3). Themes reported by medical professionals were: Expanding the initiative to other CMC (Theme 1); feeling bonded with other caregivers within the working group (Theme 2); information exchange across different working groups (Theme 3), positive responses from CMC (Theme 4); families' confidence to go out (Theme 5). CONCLUSIONS: This study showed that the excursion to TDL led to positive psychological changes in both medical professionals and parents of CMC, enhancing trust, connection, and confidence. The promising results of this study suggest a need for further research about the impact of an excursion on caregivers of CMC.

Telepathology in intraoperative frozen section consultation of breast cancer sentinel node biopsy in Fukushima, Japan following the 2011 triple disaster: diagnostic accuracy and required time during the early implementation phase.

In breast cancer surgery, some medical facilities lack the necessary resources to conduct sentinel lymph node biopsy and its intraoperative frozen section consultation. In the coastal rural area of Fukushima, Japan, which has suffered from physician undersupply following the 2011 triple disaster of earthquake, tsunami and nuclear disaster, we explored the feasibility of telepathology by evaluating the diagnostic accuracy in remote intraoperative frozen section consultation of sentinel lymph node biopsy and its required time. Although examination time has room for improvement, telepathology can be one possible solution in resource-limited areas.

[A Case of Advanced Lung Adenocarcinoma in an Elderly Patient Who Maintained Responsiveness after Discontinuation of Immune Checkpoint Inhibitors].

An 81-year-old woman was admitted to our hospital because of an abnormal opacity on the chest radiograph. She was diagnosed with cT3N3M1a, Stage ⅣA left lower lung lobe adenocarcinoma, and the PD-L1(22C3)expression was high (tumor proportion score[TPS]: 100%). She was administered with pembrolizumab monotherapy because her performance status(PS)was PS 1. After 4 courses, she had a partial response(PR), but her treatment had to be discontinued because of cutaneous adverse effects. After 6 months, the tumor regrew, and atezolizumab monotherapy was provided. Another cutaneous adverse event occurred, and treatment was discontinued again. However, a complete response(CR)was maintained for approximately 2 years and 6 months after discontinuation of treatments.

A longitudinal study of mental health in healthcare workers in Japan during the initial phase of COVID-19 pandemic: comparison with the general population.

The COVID-19 pandemic negatively impacted the mental health of people in Japan. Healthcare workers (HCWs) especially suffered from poor mental health, engaging with COVID-19 patients while protecting themselves from infection. However, a long-term assessment of their mental health in comparison to the general population remains to be conducted. This study evaluated and compared changes in mental health between these two populations over a six-month period. Measures of mental health, loneliness, hope and self-compassion were completed at baseline and at six-month follow-up. Two-way MANOVA (Time x Group) identified that no interaction effects were present. However, at baseline, HCWs had higher levels of mental health problems and loneliness, and lower levels of hope and self-compassion than the general population. Furthermore, a higher level of loneliness was found in HCWs at six months. These findings highlight strong feelings of loneliness in HCWs in Japan. Interventions such as digital social prescribing are recommended.

Prognostic value of geriatric nutritional risk index for aspiration pneumonia: a retrospective observational cohort study.

BACKGROUND: The clinical characteristics and prognostic factors of aspiration pneumonia remain poorly defined. Geriatric nutrition risk index (GNRI) has recently been reported to exhibit a prognostic value for several diseases in older adults. AIMS: We investigated the clinical characteristics and prognostic significance of GNRI for aspiration pneumonia in older adult patients. METHODS: In this retrospective observational cohort study, conducted in a single-institute acute-phase community hospital, patients with aspiration pneumonia diagnosed at our institute between April 2014 and March 2016 were enrolled. Data on patient characteristics, microbiological findings, and clinical course were collected. The outcome was in-hospital mortality. Receiver operating characteristic curve (ROC) analysis was conducted to compare the predictive value of each parameter. Logistic regression analysis was performed to identify independent prognostic factors. RESULTS: Overall, 587 aspiration pneumonia patients aged ≥ 65 years were enrolled. Their mean age was 86 years. Among them, 97 (16.5%) died. In ROC analysis for in-hospital mortality, as compared to albumin, body mass index, and A-DROP score, GNRI had a greater area under the curve value, with a significant difference between GNRI and albumin (p = 0.0058). Male sex (p = 0.028), chronic heart failure (p = 0.023), history of malignancy (p = 0.0025), lower GNRI (p < 0.001), and initial antibiotic change (p < 0.001) were identified as independent adverse prognostic factors in multivariate analysis. DISCUSSION AND CONCLUSIONS: Our findings indicate that GNRI is a potential prognostic marker for older adults with aspiration pneumonia and may act as a proxy for disease severity. Our results support the use of GNRI in the clinical management of aspiration pneumonia.

Corticosteroids as adjunctive therapy in the treatment of coronavirus disease 2019: A report of two cases and literature review.

The effect of systemic corticosteroids on clinical outcomes in patients with coronavirus disease 2019 (COVID-19) remains controversial. While the use of corticosteroids raises concerns regarding delayed viral clearance, secondary infections, and long-term complications that can lead to increased mortality, corticosteroids have the potential to reduce mortality if used appropriately. Herein, we report good outcomes in two patients with COVID-19 who received systemic corticosteroids as adjunctive therapy. An 83-year-old man with hypertension and smoking history and a 62-year-old man with a drinking habit were transferred to our hospital with a diagnosis of COVID-19. The patients developed general malaise and loss of appetite with persistent high fever. Despite the prescription of antiviral drugs, their hypoxemia progressed rapidly. However, after the introduction of systemic corticosteroids, their symptoms improved as the fever decreased, and their hypoxemia gradually improved. These results suggest that some patients with COVID-19 may benefit from the appropriate use of systemic corticosteroids as adjunctive therapy.

Blood urea nitrogen-to-serum albumin ratio and A-DROP are useful in assessing the severity of Pneumocystis pneumonia in patients without human immunodeficiency virus infection.

INTRODUCTION: There is an increasing incidence of Pneumocystis pneumonia (PcP) among individuals without human immunodeficiency virus (HIV) infection (non-HIV PcP). However, prognostic factors for patients with non-HIV PcP have not been identified. Moreover, A-DROP (for classifying the severity of community-acquired pneumonia) or the blood urea nitrogen-to-serum albumin ratio (BUN/Alb), which is reported to be a predictor of mortality of community-acquired pneumonia, has not been established as an efficient prognostic factor in patients with non-HIV PcP. In this study, we analyzed the prognostic factors for non-HIV PcP and evaluated the prognostic ability of A-DROP and the BUN/Alb ratio. METHODS: This retrospective study involved a chart review of the medical records of 102 patients diagnosed with non-HIV PcP between January 2003 and May 2019 at five medical facilities. RESULTS: Overall, 102 patients were involved in this study. The 30-day mortality rate for non-HIV PcP was 20.5% in this study population. Compared with survivors, non-survivors had significantly lower serum albumin levels and significantly higher age, corticosteroid dosage at the PcP onset, alveolar-arterial oxygen gradient, A-DROP score, lactate dehydrogenase levels, blood urea nitrogen levels, and BUN/Alb ratio. Multivariate analysis showed that a high BUN/Alb ratio at treatment initiation was significantly associated with 30-day mortality risk. The receiver operating characteristic curves showed that A-DROP score had the highest prognostic ability in estimating 30-day mortality. CONCLUSIONS: In patients with non-HIV PcP, a high BUN/Alb ratio is an independent prognostic predictor of mortality risk, and A-DROP is useful for classifying the severity.

The usefulness of a combination of age, body mass index, and blood urea nitrogen as prognostic factors in predicting oxygen requirements in patients with coronavirus disease 2019.

INTRODUCTION: Risk factors for seriously ill coronavirus disease 19 (COVID-19) patients have been reported in several studies. However, to date, few studies have reported simple risk assessment tools for distinguishing patients becoming severely ill after initial diagnosis. Hence, this study aimed to develop a simple clinical risk nomogram predicting oxygenation risk in patients with COVID-19 at the first triage. METHODS: This retrospective study involved a chart review of the medical records of 84 patients diagnosed with COVID-19 between February 2020 and March 2021 at ten medical facilities. The patients were divided into requiring no oxygen therapy (non-severe group) and requiring oxygen therapy (severe group). Patient characteristics were compared between the two groups. We utilized univariate logistic regression analysis to confirm determinants of high risks of requiring oxygen therapy in patients with moderate COVID-19. RESULTS: Thirty-five patients ware in severe group and forty-nine patients were in non-severe group. In comparison with patients in the non-severe group, patients in the severe group were significantly older with higher body mass index (BMI), and had a history of hypertension and diabetes. Serum blood urea nitrogen (BUN), lactic acid dehydrogenase (LDH), and C-reactive protein (CRP) levels were significantly higher in the severe group. Multivariate analysis showed that older age, higher BMI, and higher BUN levels were significantly associated with oxygen requirements. CONCLUSIONS: This study demonstrated that age, BMI, and BUN were independent risk factors in the moderate-to-severe COVID-19 group. Elderly patients with higher BMI and BUN require close monitoring and early treatment initiation.

COVID-19: challenges faced by Nepalese migrants living in Japan.

BACKGROUND: Worldwide, COVID-19 has exacerbated the vulnerability of migrants, impacting many facets of their lives. Nepalese make up one of the largest groups of migrants residing in Japan. Crises, such as the ongoing COVID-19 pandemic could disproportionately affect migrants from low- and middle-income countries like Nepal, widening health and economic inequalities. An in-depth, comprehensive assessment is needed to appraise the diverse problems they encounter. Drawing upon qualitative interviews, this study aimed to identify challenges faced by Nepalese migrants in Japan as a consequence of the COVID-19 pandemic and to discuss their needs to counter these challenges. METHODS: This qualitative study employed an interpretivist approach to appraise the first-hand experience of Nepalese migrants living in Japan. Fourteen participants (8 males and 6 females, aged 21 to 47 years old) were recruited to participate in semi-structured in-depth telephone interviews (45-60 min) regarding: (a) their perceived current physical and mental health, (b) problems faced as a result of the COVID-19 pandemic, and (c) perception of available and necessary support structures. Purposive and snowball sampling techniques were used to recruit the participants. Interviews were recorded, transcribed, and thematically analyzed. RESULTS: Six themes were identified: 1) experiencing psychosomatic symptoms, 2) adoption of new healthy behaviors, 3) financial hardship, 4) family concerns, 5) reflections on discrimination and 6) reflections of existing support and expectations of support systems. The findings of our study illustrate the specific impact of COVID-19 among Nepalese migrants regarding their unstable employment conditions, perceived lack of social support, possible obligation to send money home, difficulty in accessing services due to the language barrier, and a lack of effective governmental support from Nepal. Pandemic-related adversity has negatively impacted migrants' mental well-being, exacerbating their vulnerability. CONCLUSIONS: Comprehensive and timely support should be provided to the vulnerable migrant population. Effective coordination among relevant parties in both countries, including the governments concerned, should be facilitated.

Videoconferencing for Home Care Delivery in Japan: Observational Study.

BACKGROUND: Telemedicine has been increasingly used in many health care fields, including home care, where patients receive medical care at home. Owing to the current COVID-19 crisis, the value of telemedicine via videoconferencing is more recognized, particularly in allowing immobile patients to continue receiving care. However, the efficacy of telemedicine in home care settings in Japan remains to be fully appraised. OBJECTIVE: This study aims to identify the use and impact of telemedicine in a singular home care delivery setting in Japan. METHODS: A retrospective observational study was conducted using patient and other administrative records from a home care clinic. We considered patients who were involved in videoconferencing with home care physicians and telepresenters serving patients during 2018 and 2019. We extracted sociodemographic data of the patients and details of the videoconferencing and descriptively illustrated some specific cases. RESULTS: In a home care clinic in Japan, videoconferencing was conducted in 17 cases (involving 14 patients) over a 2-year period. Of all the cases, 12% (2/17) required emergency transfers and were hospitalized. A total of 88% (15/17) of cases remained; 71% (12/17) of cases were found to need extra medication or to go to a medical facility for consultation, whereas 18% (3/17) of cases were found not to be in need of urgent attention and were asked to rest. Problematic symptoms subsequently improved in 82% (14/17) of cases, and only 6% (1/17) of cases were later hospitalized. CONCLUSIONS: Telemedicine was deemed effective for assessing patients' conditions in the home care setting in situations where home visits by a physician cannot be carried out. Our findings indicate that consultations via videoconferencing are safe and effective, suggesting more active use of videoconferencing in other clinical contexts.

Prognosis of patients with acute exacerbation of combined pulmonary fibrosis and emphysema: a retrospective single-centre study.

BACKGROUND: Previous analyses of combined pulmonary fibrosis and emphysema (CPFE) cohorts have provided conflicting data on the survival of patients with CPFE. Therefore, the aim of this study was to investigate the clinical prognosis of acute exacerbations (AE) of CPFE. METHODS: We retrospectively reviewed the medical records of patients who had been treated at the Shinshu University Hospital (Matsumoto, Japan) between 2003 and 2017. We identified 21 patients with AE of CPFE and 41 patients with AE of idiopathic pulmonary fibrosis (IPF) and estimated their prognoses using the Kaplan-Meier method. RESULTS: Treatment content and respiratory management were not significantly different between the two groups before and after exacerbation. At the time of AE, the median serum Krebs von den Lungen-6 level was significantly lower in the CPFE group (Krebs von den Lungen-6: 966 U/µL; white blood cell count: 8810 /µL) than that in the IPF group (Krebs von den Lungen-6: 2130 U/µL, p < 0.001; white blood cells: 10809/µL, p = 0.0096). The baseline Gender-Age-Physiology scores were not significantly different between the two groups (CPFE, 4.5 points; IPF, 4.7 points; p = 0.58). Kaplan-Meier curves revealed that the survival time after AE for patients with CPFE was longer than that for patients with IPF (p < 0.001, log-rank test). CONCLUSIONS: Survival prognoses after AE were significantly better for patients with CPFE than that for those with IPF. Our findings may improve the medical treatment and respiratory management of patients with AE-CPFE.

[A Case of Squamous Cell Lung Cancer in an Elderly Patient with Low PD-L1 Expression Effectively Treated with Nab-Paclitaxel(Nab-PTX)plus Carboplatin (CBDCA)plus Pembrolizumab for a Recurrence after Operation].

An 81-year-old man was admitted to our medical center for dyspnea. He underwent right upper lobectomy due to squamous cell lung cancer 5 years ago. Chest computed tomography(CT)revealed stenosis ofthe right main bronchus, and pathological diagnosis ofthe lesion was squamous cell carcinoma and PD-L1 expression was low(tumor proportion score [TPS]: 1%). Because his performance status(PS)was 1, he underwent 4 courses ofnab -paclitaxel(nab-PTX)plus carboplatin( CBDCA)plus pembrolizumab chemotherapy and pembrolizumab maintenance chemotherapy. The stenosis ofthe right main bronchus was clear after chemotherapy, and his dyspnea was improved. Chemotherapy using nab-PTX plus CBDCA plus pembrolizumab may become one of the therapeutic choices for the recurrence after operation of an elderly person with squamous cell lung carcinoma and low PD-L1 expression.

Current Ventilator and Oxygen Management during General Anesthesia: A Multicenter, Cross-sectional Observational Study.

BACKGROUND: Intraoperative oxygen management is poorly understood. It was hypothesized that potentially preventable hyperoxemia and substantial oxygen exposure would be common during general anesthesia. METHODS: A multicenter, cross-sectional study was conducted to describe current ventilator management, particularly oxygen management, during general anesthesia in Japan. All adult patients (16 yr old or older) who received general anesthesia over 5 consecutive days in 2015 at 43 participating hospitals were identified. Ventilator settings and vital signs were collected 1 h after the induction of general anesthesia. We determined the prevalence of potentially preventable hyperoxemia (oxygen saturation measured by pulse oximetry of more than 98%, despite fractional inspired oxygen tension of more than 0.21) and the risk factors for potentially substantial oxygen exposure (fractional inspired oxygen tension of more than 0.5, despite oxygen saturation measured by pulse oximetry of more than 92%). RESULTS: A total of 1,786 patients were found eligible, and 1,498 completed the study. Fractional inspired oxygen tension was between 0.31 and 0.6 in 1,385 patients (92%), whereas it was less than or equal to 0.3 in very few patients (1%). Most patients (83%) were exposed to potentially preventable hyperoxemia, and 32% had potentially substantial oxygen exposure. In multivariable analysis, old age, emergency surgery, and one-lung ventilation were independently associated with increased potentially substantial oxygen exposure, whereas use of volume control ventilation and high positive end-expiratory pressure levels were associated with decreased potentially substantial oxygen exposure. One-lung ventilation was particularly a strong risk factor for potentially substantial oxygen exposure (adjusted odds ratio, 13.35; 95% CI, 7.24 to 24.60). CONCLUSIONS: Potentially preventable hyperoxemia and substantial oxygen exposure are common during general anesthesia, especially during one-lung ventilation. Future research should explore the safety and feasibility of a more conservative approach for intraoperative oxygen therapy.

A Four-Center Retrospective Study of the Efficacy and Toxicity of Low-Dose Trimethoprim-Sulfamethoxazole for the Treatment of Pneumocystis Pneumonia in Patients without HIV Infection.

The dose of trimethoprim-sulfamethoxazole (TMP-SMX) for the treatment of Pneumocystis pneumonia (PCP) in patients without human immunodeficiency virus (HIV) infection has not been verified. The aim of this study was to investigate the efficacy and toxicity of a low-dose TMP-SMX regimen in such patients. A retrospective study was conducted in four hospitals. We reviewed the medical records of patients with PCP but not HIV (non-HIV-PCP) who were treated with TMP-SMX between 2003 and 2016. The patients were divided into conventional-dose (TMP, 15 to 20 mg/kg/day) and low-dose (TMP, <15 mg/kg/day) groups after patients who received high-dose (TMP, >20 mg/kg/day) treatment were excluded. Grouping was done according to a correction dose, which was based on renal function. Eighty-two patients had non-HIV-PCP. The numbers of patients who received high-, conventional-, and low-dose treatments were 5, 36, and 41, respectively. Kaplan-Meier analysis for death associated with PCP showed no statistically significant difference in survival rates between the conventional- and low-dose groups. Ninety-day cause-specific mortality rates were 25.0% and 19.5% in the conventional-dose and low-dose groups (P = 0.76), respectively. Adverse events that were graded as ≥3 according to the Common Terminology Criteria for Adverse Events (version 4.0) (National Cancer Institute, 2010) were 41.7% and 17.1% in the conventional-dose and low-dose groups (P = 0.02), respectively. Moreover, vomiting (P = 0.03) and a decrease in platelet count (P = 0.03) occurred more frequently in the conventional-dose group. Treatment of non-HIV-PCP with low-dose or conventional-dose TMP-SMX produces comparable survival rates; however, the low-dose regimen is better tolerated and associated with fewer adverse effects.

[Anesthetic Management of an Infant with Rapidly Developed Hyponatremia due to Bowel Perforation during Enema Reduction Using Diluted Contrast Medium].

A 7-kg 8-month-old boy was transferred to our institution after failed enema reduction of intussusception elsewhere. During the redo intervention using a 6-fold-diluted solution of Gastrografin with water as contrast medium, the bowel was perforated. Urgent surgical repair was planned and preoperative examination revealed serum sodium of 137 mEq x l(-1). On arrival in the operating room, the patient presented abdominal distension, drowsiness and tachypnea. His trachea was intubated and anesthesia was maintained with sevoflurane. Arterial blood examination immediately before the surgery (approximate by 80 minutes after the previous blood test) showed the following findings: pH 7.27, base excess -8.5 mEq x l(-1) and sodium 122 mEq x l(-1). Watery ascites estimated at 450 ml was evacuated upon a peritoneal incision. At termination of anesthesia, serum sodium recovered to 133 mEq x l(-1), resulting from replenishment of electrolytes and sodium bicarbonate administration. The patient became fully awake and his trachea was extubated in the operating room. Gastrografin has osmolarity of 1,900 mOsm x l(-1), containing sodium of 158 mEq x l(-1). Massive intraperitoneal accumulation of diluted Gastrografin is a rational explanation for the rapidly developed hyponatremia, which can lead to hyponatremic encephalopathy, especially in infants. Prompt surgical intervention is therefore essential for successful management of such cases.