Characteristics of Vulnerable Foreigners in Need of Emergency Care Support in Japan: A Case Study of Thai Nationals from 2004 to 2020

In Japan, a considerable number of foreigners encounter challenges in accessing appropriate healthcare services due to the lack of insurance coverage. However, the absence of a public database on these individuals makes it difficult to assess their health problems and healthcare access status. This study aims to investigate the characteristics of vulnerable Thai patients in Japan and to shed light on the specific challenges they face within Japan's healthcare system. A retrospective analysis was conducted using records of patients who required emergency healthcare support from the Royal Thai Embassy in Tokyo between 2004 and 2020. Descriptive statistical analyses were performed to examine the general characteristics, insurance status, and diseases of the patients. Additionally, patients were classified as either prolonged residents or brief residents based on their duration of stay in Japan until hospital admission (1 year or more or less than 1 year). A total of 74 patients were identified, with the majority (91.9%) lacking insurance coverage. Notably, there was an increase in the number of brief residents, including tourists, during the 2010s. Prolonged residents were more likely to experience chronic diseases, whereas brief residents were more prone to sustaining injuries. The patient records from the Thai Embassy consistently highlight the urgent requirement for emergency healthcare support within this population. However, the existing policies in Japan fall short in adequately addressing the healthcare access needs of this vulnerable population. Therefore, it is crucial to provide additional support and interventions to enhance their healthcare access.

Practical Utility of a Clinical Pathway for Older Patients with Aspiration Pneumonia: A Single-Center Retrospective Observational Study

Introduction: Clinical pathways (CPWs) are patient management tools based on a standardized treatment plan aimed at improving quality of care. This study aimed to investigate whether CPW-guided treatment has a favorable impact on the outcomes of hospitalized older patients with aspiration pneumonia. Method: This retrospective study included patients with aspiration pneumonia, aged ≥ 65 years, and hospitalized at a community hospital in Japan. CPW implementation was arbitrarily determined by the attending physician upon admission. Outcomes were compared according to with or without the CPW (CPW-group and non-CPW groups). Propensity score (PS)-based analyses were used to control for confounding factors. Logistic regression analyses were conducted to evaluate the impact of CPW on the clinical course and outcomes. Results: Of 596 included patients, 167 (28%) received the CPW-guided treatment. The mortality rate was 16.4%. In multivariable model, CPW implementation did not increase the risk for total and 30-day mortality, and resulted in shorter antibiotic therapy duration (≤9 days) (PS matching (PSM): odds ratio (OR) 0.50, p = 0.001; inverse provability of treatment weighting (IPTW): OR 0.48, p < 0.001) and length of hospital stay (≤21 days) (PSM: OR 0.67, p = 0.05; IPTW: OR 0.66, p = 0.03). Conclusions: This study support CPW utility in this population.

Bridging the Language Gap: The Role of Human-Mediated Translation in Japanese Medical Settings

Introduction Foreign residents in Japan often face challenges accessing healthcare due to language barriers, potentially leading to health inequities. This study aimed to assess the utilization and impact of human-mediated translation services in a specific medical setting in Tokyo. Methods A retrospective investigation was conducted on medical records of foreign patients who utilized human-mediated translation services at Navitas Clinic Tachikawa (Tachikawa, Tokyo, Japan) from November 2017 to December 2021. Data on age, gender, language used, department visited, diagnosis, insurance status, and booking methods were analyzed. Results Out of the 124 foreign patients who utilized the human-mediated translation services during the study period, 69 (56%) were male, and 55 (44%) were female. The median age was 35 years, with a range from 3 to 61 years. English was the predominant language used by 34 patients (59%), followed by Chinese for nine patients (16%) and Spanish for four patients (7%). The majority, 107 patients (86%) visited the internal medicine department, nine patients (7%) consulted dermatology, and six patients (5%) visited pediatrics. Regarding insurance status, 47 patients (81%) were insured, three patients (5%) were uninsured by the Japanese national health insurance system, and eight patients (14%) were self-pay. The primary mode of appointment booking was at the reception desk, with 112 patients (90%) using this method, while 12 patients (10%) made reservations online. Conclusions The findings of this study underscore the importance of human-mediated translation services for improving healthcare accessibility for foreign residents in Japan, emphasizing the need to address language barriers and promote health equity in clinical settings. Future studies should also explore challenges faced in patient-physician interactions from a linguistic perspective and potential technological solutions to enhance these services.

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.

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.

Difficulty in continuing home care after informal caregiver was exposed to the COVID‐19: A case report

Home care can present many challenges without management. During COVID‐19 pandemic, when an informal caregiver becomes infected and had to isolate themselves, finding another caregiver becomes extremely challenging. For terminally ill patients, who relies on other for even minor tasks, interruption of care could pose severe negative consequences.

In home care settings, when informal caregivers are exposed to COVID‐19, it may be difficult to find replacement caregivers and care could be interrupted.

Implications of end‐of‐life home care compared with hospital‐based care during the COVID‐19 pandemic: A case report

Restriction on hospital visits for COVID‐19 infection control continues to have a significant negative impact on patients and their families. For a patient receiving palliative care, this social isolation may deteriorate their mental health. In such situations, home care could be a viable solution to this problem.

In the COVID‐19 pandemic, providing end‐of‐life care at home may allow patients to spend more time with their families, improve communication between them and their health professionals and reduce the possibility of hospital‐acquired infections.

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.

Qualitative Investigation into the Mental Health of Healthcare Workers in Japan during the COVID-19 Pandemic

The COVID-19 pandemic has negatively impacted the mental health of healthcare workers in many countries including Japan. While many survey-based findings have reported the serious state of their wellbeing among healthcare workers, the first-hand experience of the mental health and coping in this population remains to be evaluated. Accordingly, this study aimed to appraise them using constructionist thematic analysis on semi-structured interviews attended by a purposive and snowball sample of 24 healthcare workers in Japan conducted in December 2020-January 2021. Four themes were identified: (1) increased stress and loneliness, (2) reduced coping strategies, (3) communication and acknowledgement as a mental health resource, and (4) understanding of self-care. Participants noted that the characteristics of Japanese work culture such as long hours, collectivism and hatarakigai (i.e., meaning in work) to explain these themes. These findings suggest that robust support at an organizational and individual level, capturing intrinsic values, are particularly important for this key workforce to cope with increased stress and loneliness, leading to better patient care.

A patient with mild respiratory COVID-19 infection who developed bilateral non-hemorrhagic adrenal infarction

A 76-year-old woman was admitted to the emergency room of Nagano Municipal Hospital with the complain of severe back pain. Chest and abdominal enhanced computed tomography scans showed bilateral adrenal infarction and minute pulmonary nodules, but she had no respiratory symptoms. After admission, a family member of the patient was found to have been in close contact with a coronavirus disease 2019 (COVID-19) patient. Thus, polymerase chain reaction and antigen tests of severe acute respiratory syndrome coronavirus 2 were conducted, and both tests returned positive. D-dimer levels were normal on admission but increased 2 days thereafter. Anticoagulation therapy and steroid replacement were started, and the patient improved over about two weeks. One month after the onset of adrenal infarction, a rapid adrenocorticotropic hormone loading test was conducted, which revealed that the primary adrenal insufficiency due to adrenal infarction might have been caused by the COVID-19 infection. This case was rare and suggestive of adrenal infarction with COVID-19, which usually presents at the severe stage. In patients with COVID-19, attention should be paid to the onset of thrombosis, even with mild respiratory infection. We also suggest that patients with thrombosis should be suspected of having COVID-19 even in the absence of respiratory infectious symptoms in a situation of COVID-19 epidemic.

Influenza vaccination uptake and attitudes among adult cancer patients in Japan: a web-based questionnaire survey before the 2020/2021 season

Influenza vaccination is necessary to reduce severe influenza complications, especially in immunocompromised people such as cancer patients. However, few studies have examined influenza vaccination uptake among adult Japanese patients with cancer; their attitudes toward vaccination, as well as factors related to vaccine hesitancy, are unclear. From September 1 to October 31, 2020, we disseminated a web-based questionnaire to patients with a history of cancer via snowball sampling through e-mails and social media of two Japanese cancer patients associations. A total of 163 surveys were completed. One hundred (61.3%) participants received an influenza vaccination in the 2019/2020 season, and the main reasons for vaccination were as follows: recommendation by medical professionals, positive awareness of vaccination through books or the internet, and provision of vaccination in the workplace. The main reasons for not receiving a vaccination were fear of adverse events, lack of concern about influenza infection, and lack of trust in vaccine effectiveness. In terms of the 2020/2021 season, 120 participants (73.6%) reported their intention to receive an influenza vaccination. Multiple regression analysis showed that significant factors for positive intention were the the treatment without chemotherapy (p = .009), vaccination history in the 2019/2020 season (p < .001), prior experience of influenza infection (p = .043), and the perception that influenza vaccination was more important due to the coronavirus disease pandemic (p = .050). This preliminary survey revealed a relatively modest influenza vaccine coverage among adult Japanese patients with cancer and identified several factors related to positive intention toward vaccination.

The survival time of end-of-life home care patients in Fukui prefecture, Japan: A retrospective observational study

ABSTRACT

End-of-life advance care planning (ACP) has become increasingly important in home care setting. In facilitating ACP discussion in home care setting, accurate understanding of patients' survival would be beneficial because it would facilitate healthcare professionals to individualize ACP discussion. However, little is known about survival outcome of home care patients. This study aimed to clarify the outcome of patients and identify factors to better predict the survival outcome of home care patients with the focus on patients' primary diseases.We conducted a retrospective analysis using data from 277 patients managed at a home care clinic in Japan and first treated in 2017 or 2018. Data regarding sociodemographic and clinical characteristics, and clinical outcome on December 31, 2019 were extracted. Using Kaplan-Meier product-limit method, we estimated the overall 30 days, 90 days, 1 year, and 3 year survival probabilities among the entire patients and their differences according to their primary disease. We also evaluated whether outcomes differed based on the primary disease or other factors using the hazard ratio and Cox proportional hazards regression.The overall survival probability was 82.5% at 30 days, 67.8% at 90 days, 52.7% at 1 year, and 39.1% at 3 years. The survival rates at 30 days, 90 days, 1 year, and 3 years were 64.6%, 33.4%, 9.5%, and 4.1% among cancer patients; 91.9%, 86.4%, 78.1%, and 47.0% among dementia patients; and 91.9%, 86.4%, 78.1%, and 47.0% among patients with other nervous and cerebrovascular diseases, respectively. Cox proportional hazard regression clarified that cancer patients (hazard ratio 6.53 [95% CI 4.16-10.28]) and older adults (hazard ratio 1.01 [95% CI 1.00-1.02]) were significantly more likely to die than dementia patients and young patients, respectively.Primary disease had a significant influence on the prediction of survival time and could be a useful indicator to individualize ACP in home care setting.

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.

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.

Supplementary Information

The online version contains supplementary material available at 10.1186/s12889-021-10796-8.

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.

Incidental cerebral aneurysms detected by a computer-assisted detection system based on artificial intelligence: A case series

RATIONALE

Computer-assisted detection (CAD) systems based on artificial intelligence (AI) using convolutional neural network (CNN) have been successfully used for the diagnosis of unruptured cerebral aneurysms in experimental situations. However, it is yet unclear whether CAD systems can detect cerebral aneurysms effectively in real-life clinical situations. This paper describes the diagnostic efficacy of CAD systems for cerebral aneurysms and the types of cerebral aneurysms that they can detect.

PATIENT CONCERNS

From March 7, 2017 to August 26, 2018 we performed brain magnetic resonance imaging (MRI) scans for 1623 subjects, to rule out intracranial diseases. We retrospectively reviewed the medical records including the history and images for each patient.

DIAGNOSES, INTERVENTIONS AND OUTCOMES

Among them, we encountered 5 cases in whom the cerebral aneurysms had been overlooked in the first and second round of imaging, and were detected for the first time by CAD. All missed aneurysms were less than 2 mm in diameter. Of the 5 aneurysms, 2 were internal carotid artery (ICA) paraclinoid aneurysms, 2 were Internal carotid-posterior communicating artery (IC-PC) aneurysms and 1 was a distal middle cerebral artery (MCA) aneurysm.

LESSONS

Our CAD system can detect very small aneurysms masked by the surrounding arteries and difficult for radiologists to detect. In the future, CAD systems might pave the way to substitute the workload of diagnostic radiologists and reduce the cost of human labor.

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.

Emergency transfers of home care patients in Fukui Prefecture, Japan: A retrospective observational study

Little is known about how emergency transfers take place and what outcomes they lead to in the patients who receive home care in Japan. We aimed to assess outcomes of emergency transfers and factors associated with such outcomes in the Japanese home care setting.A retrospective analysis of patient data from a home care clinic in Fukui, Japan, included all patients who experienced emergency transfers which were reported to the clinic during 2018 and 2019. We collected data on patients' sociodemographic and clinical characteristics, as well as the transfer process and its outcome, using patient charts and other administrative records. We first analyzed the overall outcome and then evaluated whether transfer outcomes would differ according to by whom and from where the emergency medical service (EMS) was called, by univariate and multivariate analyses.We considered 63 patients who experienced emergency transfers during the study period. Of the total, 10 (15.9%) returned to their residences without being admitted or being dead on arrival. Although only 2.6% (1/39) of patients whose transfers were determined by health care professionals (HCPs) returned home without being admitted, a direct return was observed for 37.5% (9/24) of patients whose transfer was determined by those other than HCPs (odds ratio of direct return to residences 22.80, 95% confidence interval 2.65-195.87). There was no other variable which was significantly associated with the outcomes after the emergency transfers, although all the patients who have no available caregivers resulted in hospitalization.In this preliminary analysis in the Japanese home care setting, only a small proportion of patients returned to their residences without being admitted following emergency transfers. Patients whose EMS transfer was requested by an HCP usually resulted in an admission to the clinic, whereas transfers requested by non-HCPs frequently did not.

Differences Between Central Airway Obstruction and Chronic Obstructive Pulmonary Disease Detected with the Forced Oscillation Technique

Background

Obstructive ventilatory disturbances occur in both chronic obstructive pulmonary disease (COPD), a typical disease representative of peripheral airway obstruction, and central airway obstruction (CAO). Pulmonary function tests (PFTs), which depend on patient effort, are traditionally used to evaluate lung function. The forced oscillation technique (FOT) is an effort-independent method for examining lung function during tidal breathing. The FOT is used universally to assess respiratory function in patients with COPD. Several studies have measured FOT to assess ventilatory disturbances in CAO. The results showed that FOT measurements in patients with CAO were similar to those reported in patients with COPD. However, no studies have compared FOT measurements directly between CAO and COPD. The aim of this study was to identify differences in ventilatory disturbances between peripheral and central airway obstructions in COPD and CAO, before patients received pharmacological therapy or bronchoscopic interventions, respectively.

Patients and Methods

We retrospectively included 16 patients with CAO (10 cases of tracheal obstruction and 6 cases of bronchial obstruction) and 75 treatment-naïve patients with COPD (60 cases in Global Initiative for Chronic Obstructive Lung Disease [GOLD] stage II and 15 cases in GOLD stage III) that were admitted from December 2013 to May 2017. Prior to treatment, patients were examined with the FOT and PFTs.

Results

All parameters measured with the FOT in the inspiratory phase were significantly worse in patients with CAO than in patients with COPD. The PFTs showed that the CAO group had a significantly lower peak expiratory flow rate. In the airway wall thickening phenotype of COPD, a difference between the inspiratory and expiratory phases of the resonance frequency (ΔFres) was the best indicator for distinguishing between peripheral and central airway obstructions.

Conclusion

This study compared differences between CAO and COPD (mainly GOLD stage II). We found that the FOT measurement, ΔFres, was the optimal indicator of the difference between the airway wall thickening COPD phenotype and CAO. Thus, the difference might be due to mechanical changes that occur in COPD with airway wall thickening.

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.

Association between Syphilis Incidence and Dating App Use in Japan

Introduction:

The cause of the syphilis resurgence in Japan is still unknown. In this study, we hypothesized that the spread of mobile dating software for use on mobile phones might have contributed to it. We investigated possible contributing factors of the syphilis resurgence in Japan.

Methods:

We retrieved the number of reported cases of syphilis, human immunodeficiency virus infection, carbapenem-resistant Enterobacteriaceae infection, invasive Streptococcus pneumoniae infection, general population, foreign national residents, international overnight guests, detachment-type sex trade shops, physician density, and smartphone penetration rate at the prefectural level in 2017. We also obtained the number of three major dating app users in each prefecture. Using them, we performed association analyses.

Results:

The median of syphilis incidence per 100,000 prefectural population was 2.34 (range 0.72 to 12.90). The values of Spearman’s rank correlation coefficients between syphilis incidence and app penetration rates were 0.59 (p < 0.001) for app 1, 0.57 (p < 0.001) for app 2, and 0.56 for app 3 (p < 0.001). The values of correlation coefficient between syphilis incidence and prefectural population (0.50, p < 0.001), foreign national residents per prefectural population (0.46, p = 0.001), and smartphone penetration rate (0.54, p < 0.001) were significant, while international overnight guests per prefectural population (0.19, p = 0.19), sex trade shops (0.24, p = 0.10), and physician density (0.10, p = 0.52) were not. In the multiple regression analyses, the contents of an optimized model included the following two factors: for app 1 penetration rate (0.39, p < 0.001) and the number of sex trade shops per prefectural population (0.18, p = 0.008) with the adjusted R-squared value 0.49 and F value 22.97 (p < 0.001).

Conclusions:

Dating app penetration rate was significantly associated with syphilis incidence. The popularization of social media is a possible contributing factor in the syphilis resurgence in Japan. Information concerning the use of social media should be included in future studies on transmission and prevention of sexually transmitted infections.

Probe-based optical fiberscopy for the direct observation of peripheral pulmonary lesions

BACKGROUND

Peripheral pulmonary lesions are rarely observed directly before transbronchial biopsy. This study aimed to characterize the differences between malignant and benign peripheral pulmonary lesions according to the findings of direct observation using probe-based optical fiberscopy.

METHODS

Thirty patients who underwent probe-based optical fiberscopy in combination with bronchoscopy using endobronchial ultrasonography with a guide sheath for the evaluation of peripheral pulmonary lesions were prospectively included in this study. The patients were divided into the malignant and benign groups according to their final diagnosis. The findings of probe-based optical fiberscopy in the two groups were compared.

RESULTS

The numbers of patients who were diagnosed using histological or bacteriological analyses via bronchoscopic sampling in the malignant and benign groups were 20/23 (87.0%) and 2/7 (28.6%), respectively. On probe-based optical fiberscopy, angiogenesis and vascular engorgement were observed only in the malignant group. The disappearance of subepithelial microvessel transparency and presence of bronchiolar stenosis were observed more frequently in the malignant group (78.3% and 60.9%) than in the benign group (28.6% and 28.6%), whereas increased mucus secretion was observed more frequently in the benign group (71.4%) than in the malignant group (8.7%).

CONCLUSIONS

These results suggest that the findings of direct observation using probe-based optical fiberscopy are useful for differentiating malignant from benign peripheral pulmonary lesions.

TRIAL REGISTRY

UMIN-CTR; UMIN000018796; URL: https://www.umin.ac.jp/ctr/index.htm.

Usefulness of the forced oscillation technique in assessing the therapeutic result of tracheobronchial central airway obstruction

BACKGROUND

Pulmonary function tests (PFTs) comprise the traditional method for detecting central airway obstruction (CAO) and evaluating therapeutic effects, but are effort-dependent. By contrast, the forced oscillation technique (FOT) is performed during tidal breathing in an effort-independent mode and is universally used to assess respiratory function in patients with chronic obstructive pulmonary disease (COPD) and asthma. We used the FOT to measure airway resistance and reactance in patients with CAO before and after interventional bronchoscopy and compared the results to data obtained using PFTs.

METHODS

Twelve patients with CAO were recruited from December 2013 to July 2016. The FOT, PFTs, chest computed tomography (CT), COPD Assessment Test (CAT), and the modified Medical Research Council (mMRC) dyspnea scale were employed before and after interventional bronchoscopy. The minimum airway cross-sectional area (MACSA) was calculated using a CT image calculator.

RESULTS

Of the 12 patients, 6 had tracheal obstruction and 6 had bronchial obstruction. All FOT measurements, except ΔX5, were significantly improved after interventional bronchoscopy in all cases. The significance of the improvement was greater with the FOT than PFTs. The MACSA, CAT, and mMRC dyspnea scale scores also significantly improved in all cases. Furthermore, only alteration of resistance at 20 Hz (R20) significantly correlated with the alteration of the MACSA after intervention. No significant correlations were found for PFTs.

CONCLUSIONS

The FOT is suitable and convenient for assessing therapeutic results in patients with tracheobronchial CAO. The alteration of R20 is useful for estimating the airway dilation of CAO after interventional bronchoscopy.

The Complete Remission of Acquired Immunodeficiency Syndrome-associated Isolated Central Nervous System Lymphomatoid Granulomatosis: A Case Report and Review of the Literature

A 49-year-old man presented with gradually progressive aphasia one month after being diagnosed with acquired immunodeficiency syndrome (AIDS). Brain magnetic resonance imaging showed multiple brain lesions with punctate and linear enhancement. A polymerase chain reaction detected Epstein-Barr virus (EBV) in the patient's cerebrospinal fluid. A diagnosis of isolated central nervous system lymphomatoid granulomatosis (CNS-LYG) was made based on the brain biopsy findings. The complete remission of CNS-LYG was achieved by anti-retroviral therapy (ART) alone. In the present case, the development of AIDS-associated CNS-LYG was considered to have been initiated by the reactivation of EBV in the CNS under immunosuppressive conditions. The patient's condition improved with the reconstitution of the patient's immune system.

[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.

[A case of torsade de pointes in a patient with severe aortic stenosis during carotid endarterectomy]

An 87-year-old man with severe aortic stenosis developed torsade de pointes (TdP) during carotid endarterectomy before carotid artery stenosis. By prompt resuscitation and medication including lidocaine and magnesium, the patient recovered without complications in spite of high risk for refractory cardiac arrest or brain infarction. There was no other history or laboratory data suggesting arrhythmia except elongation on preoperative electrocardiogram. Inhaled anesthetics, catecholamine and sympathetic nerve stimulation were possible causes of QT elongation and induce TdP. Particularly in a patient with carotid and cardiac diseases, cardiac arrest is critical. Therefore we should avoid exacerbating factors of QT elongation or TdP even if patients have no particular history of arrhythmia.

Mantle cell lymphoma mainly involving thoracic lesions: two case reports

Most mantle cell lymphoma patients show remarkable disseminated disease at the initial diagnosis. We describe two cases of mantle cell lymphoma mainly involving thoracic lesions at the initial presentation of the disease. The clinical presentations were right hilar lymphadenopathy in one case and right pleural thickness in the other. The diagnosis of mantle cell lymphoma was confirmed by immunohistochemistry, including CD5, CD20, and cyclin D1, and the presence of t(11 ; 14)(q13 ; q32) by fluorescence in situ hybridization. These thoracic manifestations at the initial diagnosis should be taken into consideration for the clinical spectrum of mantle cell lymphoma.

[A case of primary pulmonary leiomyosarcoma showing rapid growth and fatal outcome]

An 80-year-old man was admitted to our hospital with a 4.0 x 2.0 cm shadow accompanied by calcification, found on chest CT scans on a health check. The shadow was located in the left lower lobe (S10), and was attached to the pleura. A transbronchial biopsy did not yield a definitive diagnosis. A percutaneous needle biopsy yielded a diagnosis of leiomyosarcoma. A general examination did not show any metastatic lesions in other areas. However, the tumor grew rapidly, with pleural effusion, and therefore he was treated only by palliative therapy. He died from respiratory failure 90 days after onset. The primary site of the tumor was determined to be intrapulmonary area by radiographic and autopsy findings. We report a rare primary pulmonary leiomyosarcoma showing rapid growth and fatal outcome.

[Three cases of esophageal bleeding after cardiovascular surgery]

Three patients after cardiovascular surgery developed severe esophageal bleeding. All had been diagnosed as having an aberrant subclavian artery (ASCA). ASCA is the commonest congenital anomaly of the aortic arch, which arises from the proximal portion of the descending thoracic aorta and runs across the back side of the esophagus. The patients were intubated with a tracheal, nasogastric or ileus tube for a long time after surgery because of low output syndrome (LOS), delayed awareness, or ileus. The ASCA was compressed by the nasogastric or ileus tube in the esophagus and the patients developed an ASCA-esophageal fistula and bleeding. It should be noted that patients with an ASCA may suffer from esophageal bleeding due to the prolonged use of a nasogastric tube. Prevention is the best way to avoid this serious complication.