Macrocyclic Parallel Dimer Showing Quantum Coherence of Quintet Multiexcitons at Room Temperature.

Singlet fission (SF) is a promising approach in quantum information science because it can generate spin-entangled quintet triplet pairs by photoexcitation independent of temperature. However, it is still challenging to rationally achieve quantum coherence at room temperature, which requires precise control of the orientation and dynamics of triplet pairs. Here we show that the quantum coherence of quintet multiexcitons can be achieved at room temperature by arranging two pentacene chromophores in parallel and in close proximity within a macrocycle.

High Fresh Frozen Plasma to Red Blood Cell Ratio and Survival Outcomes in Blunt Trauma.

Importance: Current trauma-care protocols advocate early administration of fresh frozen plasma (FFP) in a ratio close to 1:1 with red blood cells (RBCs) to manage trauma-induced coagulopathy in patients with severe blunt trauma. However, the benefits of a higher FFP to RBC ratio have not yet been established.

Objective: To investigate the effectiveness of a high FFP to RBC transfusion ratio in the treatment of severe blunt trauma and explore the nonlinear relationship between the ratio of blood products used and patient outcomes.

Assembly of anionic silver nanoclusters with controlled packing structures through site-specific ionic bridges.

The assembly of metal nanoclusters (NCs) into crystalline lattice structures is of interest in the development of NC-based functional materials. Here we demonstrate that the assembled structures of tri-anionic tetrahedral symmetric [Ag(BDT)] (Ag NC, BDT: 1,3-benzenedithiol) NCs are controlled into a polyethylene-like zigzag chain and a "poly-ring-fused-cyclohexane"-like honeycomb arrangement through ionic interactions with alkali metal cations such as K and Cs. The site-specific binding of alkali metal ions on the tetrahedrally arranged binding sites of Ag NCs successfully connects the adjacent NCs into various packing modes.

Optimal Treatment of Hormone Receptor-positive Advanced Breast Cancer Patients With Palbociclib.

Background/aim: Palbociclib was the first cyclin-dependent kinase 4 and 6 (CDK4/6) inhibitor approved worldwide. Currently, CDK4/6 inhibitors are strongly recommended for endocrine therapy in the first or second line with hormone receptor-positive advanced breast cancer. It is expected the use of CDK4/6 inhibitor will further increase.

Increased CT Use and No Change in Injury Severity among Child Motor Vehicle Victims: A National Trauma Database Study in Japan.

The number of fatalities associated with traffic accidents has been declining owing to improvements in vehicle safety performance and changes in the law. However, injuries in children can lead to social and economic losses. We examined 10-year changes in the characteristics of traffic trauma among pediatric motor vehicle passengers by analyzing data from the Japan Trauma Data Bank (JTDB).

Prophylactic effect of negative-pressure wound therapy and delayed sutures against incisional-surgical site infection after emergency laparotomy for colorectal perforation: A multicenter retrospective cohort study.

Aim: The prophylactic effect of negative-pressure wound therapy against incisional surgical site infection after highly contaminated laparotomies has not been sufficiently explored. This study aimed to evaluate the prophylactic effect of negative-pressure wound therapy against incisional surgical site infection after emergency surgery for colorectal perforation.

Methods: This nationwide, multicenter, retrospective cohort study analyzed data from the 48 emergency hospitals certificated by the Japanese Society for Abdominal Emergency Medicine.

Excited State Engineering in Ag Nanocluster through Peripheral Modification with Silver(I) Complexes for Bright Near-Infrared Photoluminescence.

The optical property of an ionic metal nanocluster (NC) is affected by the ionic interaction with counter ions. Here, we report that the modification of trianionic [Ag(BDT)(TPP)] NC (BDT: 1.3-benzenedithiol; TPP: triphenylphosphine) with silver(I) complexes led to the intense photoluminescence (PL) in the near-infrared (NIR) region.

Coccyx subluxation: Coccyx pain aggravated by the prone position.

A 33-year-old woman presented with coccyx pain since her first vaginal delivery. On lateral plain radiographs, the tailbone was subluxated and dislocated ventrally.

Effectiveness of Administration of Fibrinogen Concentrate as Prevention of Hypofibrinogenemia in Patients with Traumatic Brain Injury with a Higher Risk for Severe Hyperfibrinolysis: Single Center Before-and-After Study.

Background: Coagulopathy is often observed in severe traumatic brain injury (sTBI), and hyperfibrinolysis (HF) is associated with a poor prognosis. Although the efficacy of fibrinogen concentrate (FC) in multiple trauma has been reported, its efficacy in sTBI is unclear. Therefore, we delineated severe HF risk factors despite fresh frozen plasma transfusion.

Physiological status and anatomical severity factors associated with child versus adult bicyclist fatalities based on a national trauma dataset.

Bicyclists still account for the majority of child deaths in traffic accidents, despite a gradual decrease in incidence. Therefore, we investigated factors associated with child and adult bicyclist fatalities. In this retrospective study, we used data from a national hospital-based database, the Japan Trauma Data Bank.

Open pneumothorax with extensive thoracic defects sustained in a fall: a case report.

Background: Open pneumothorax with chest wall deficit is a rare chest trauma that is serious and can lead to severe respiratory failure; however, it is a potentially lifesaving injury if utilized appropriately.

Case Presentation: Herein, we report a case of an open pneumothorax with extensive chest wall deficit due to falling from a height and highlight the importance of appropriate evaluation and intervention. The patient was a Japanese man in his 50 s who fell from the 6th floor to the 3rd floor while working at a height.

Seronegative neuromyelitis optica spectrum disorder in primary familial brain calcification with variant.

•This case indicates that the variant is associated with PFBC as well as with NMOSD.

Clinical characteristics and treatment of elderly onset adult-onset Still's disease.

Adult-onset Still's disease (AOSD)-a systemic inflammatory disease-often occurs at a young age. Recently, elderly onset patient proportion has been increasing; however, data are limited. To evaluate the characteristics of elderly patients with AOSD in a multicenter cohort, we retrospectively analyzed 62 patients with AOSD at five hospitals during April 2008-December 2020.

Adverse events of emergency surgical front of neck airway access: an observational descriptive study.

Aim: Emergency front of neck access (eFONA), such as scalpel cricothyroidotomy, is a rescue technique used to open the airway during "cannot intubate, cannot oxygenate" situations. However, little is known about the adverse events associated with the procedure. This study aimed to describe the adverse events that occur in patients who undergo eFONA and their management.

Factors Affecting Death and Severe Injury in Child Motor Vehicle Passengers.

Saving children from motor vehicle collisions is a high priority because the injury rate among motor vehicle passengers has been increasing in Japan. This study aimed to examine the factors that influence death and serious injury in child motor vehicle passengers to establish effective preventive measures. To identify these factors, we performed a retrospective study using a nationwide medical database.

IgG4-related Disease with a Cardiac Mass Causing Cerebral Infarction.

Immunoglobulin G4-related disease (IgG4-RD) is a systemic inflammatory disease characterized by infiltration of extensive IgG4-positive plasma cells and lymphocytes. Although IgG4-RD has been observed in almost all organs, it rarely affects the myocardium. Cardiovascular lesions of IgG4-RD appear as aortic (aortic aneurysm and aortitis) and pericardial (constrictive pericarditis) lesions as well as pseudotumors around the coronary arteries.

Evaluation of a revised resuscitation protocol for out-of-hospital cardiac arrest patients due to COVID-19 safety protocols: a single-center retrospective study in Japan.

This study aimed to determine the association between cardiopulmonary resuscitation (CPR) under the coronavirus 2019 (COVID-19) safety protocols in our hospital and the prognosis of out-of-hospital cardiac arrest (OHCA) patients, in an urban area, where the prevalence of COVID-19 infection is relatively low. This was a single-center, retrospective, observational, cohort study conducted at a tertiary critical care center in Kyoto City, Japan. Adult OHCA patients arriving at our hospital under CPR between January 1, 2019, and December 31, 2020 were included.

The emergence of intense near-infrared photoluminescence by photoactivation of silver nanoclusters.

Photoirradiation of a pyridine solution of Ag29 nanoclusters (NCs) with red photoluminescence (PL) at 680 nm activated intense PL in the near infrared (NIR) region, giving a PL quantum yield (PLQY) of 33% at 770 nm. The use of Au-doped silver NCs further boosted the PLQY to more than 45% at 800 nm. Photoirradiation is considered to induce a change in the charge localization in the NCs, leading to the formation of NIR emitting sites.

Association of skull fracture with in-hospital mortality in severe traumatic brain injury patients.

Introduction: To identify the association between skull fracture (SF) and in-hospital mortality in patients with severe traumatic brain injury (TBI).

Materials And Methods: This multicenter cohort study included a retrospective analysis of data from the Japan Trauma Data Bank (JTDB). JTDB is a nationwide, prospective, observational trauma registry with data from 235 hospitals.

[A Case of Breast Cancer in a Female-to-Male Transsexual during Androgen Therapy].

Gender identity disorder is defined as a condition in which physical and mental sexuality do not match. A female-to-male (FTM)has the mental sexuality of males and the physical sexuality of females. FTM transsexuals generally receive androgen therapy, mastectomy, and sex reassignment surgery to live as their desired sex.

Association between visitation restriction during the COVID-19 pandemic and delirium incidence among emergency admission patients: a single-center retrospective observational cohort study in Japan.

Aim: This study aimed to identify the association between total visitation restriction because of the coronavirus 2019 (COVID-19) pandemic and the incidence of delirium for emergency inpatients.

Methods: This was a single-center, retrospective, observational cohort study conducted at a tertiary critical care center in urban Kyoto, Japan. Adult emergency patients hospitalized between January 1, 2019, and June 30, 2020, were recruited.

Association of body temperature with in-hospital mortality among paediatric trauma patients: an analysis of a nationwide observational trauma database in Japan.

Objectives: To examine the association between body temperature (BT) on hospital arrival and in-hospital mortality among paediatric trauma patients.

Design: A retrospective cohort study.

Setting: Japan Trauma Data Bank (JTDB, which is a nationwide, prospective, observational trauma registry with data from 235 hospitals).

Body temperature and in-hospital mortality in trauma patients: analysis of a nationwide trauma database in Japan.

Purpose: Avoiding body temperature (BT) abnormalities has been emphasized in trauma care, and BT correction in the initial treatment period may improve patient outcome. However, the effect of hyperthermia at hospital arrival on mortality in trauma patients is unclear. This study aimed to identify the association between BT and in-hospital mortality among adult trauma patients.