Self-inflicted very-low-velocity penetrating head injury: A CARE-compliant case report.

Rationale: Low-velocity penetrating head injury (PHI) is rare, comprising 0.2% to 0.4% of head traumas, but can be devastating and is associated with significant morbidity and mortality.

Sites of blood collection and topical disinfectants associated with contaminated cultures: An ambidirectional cohort study.

Background: We aimed to determine whether puncture sites for blood sampling and topical disinfectants are associated with rates of contaminated blood cultures in the emergency department (ED) of a single institution.

Methods: This single-center, ambidirectional cohort study of 548 consecutive patients ≥20 years of age was performed in the ED of a university hospital in Japan over a 13-month period. Pairs of blood samples were collected for aerobic and anaerobic cultures from patients in the ED.

Anisocoria without extraocular muscle impairment due to moderate traumatic brain injury with midbrain contusion: a case report.

Background: New-onset anisocoria is an important clinical clue to life-threatening intracranial injury. Anisocoria alone without impairment of extraocular muscles is a rare presentation of moderate traumatic brain injury (TBI).

Case Presentation: A 79-year-old woman was transported to hospital soon after falling off a bicycle.

Effect of the COVID-19 outbreak on emergency transport of children by an emergency medical service system: a population-based, ORION registry study.

Background: Coronavirus disease 2019 (COVID-19), caused by Severe Acute Respiratory Syndrome Coronavirus 2, has spread rapidly around the world.

Objective: To assess the effect of the COVID-19 pandemic on the emergency medical service (EMS) and hospital admission course for children transported by ambulance.

Methods: This study was a retrospective, descriptive study with a study period from January 1, 2018 to December 31, 2020 using the Osaka Emergency Information Research Intelligent Operation Network (ORION) system.

Influence of the COVID-19 outbreak on transportation of pregnant women in an emergency medical service system: Population-based, ORION registry.

Background: The coronavirus disease 2019 (COVID-19), caused by Severe Acute Respiratory Syndrome Coronavirus 2, has spread rapidly across the world.

Objective: To assess the influence of the COVID-19 pandemic on the emergency medical service (EMS) for transportation of pregnant women by ambulance.

Methods: This study was a retrospective, descriptive study using the Osaka Emergency Information Research Intelligent Operation Network system, and included pregnant women transported by ambulance in Osaka Prefecture between January 1, 2018 and December 31, 2020.

Altered consciousness with transient abnormal signals in the hippocampus: A case report.

Hippocampal infarction is relatively rare. Many different diseases can mimic hippocampal infarction including transient global amnesia, Alzheimer's disease, epilepsy, encephalitis, and encephalopathies. An 89-year-old man was transported to our hospital for altered consciousness.

Regression discontinuity of blood culture contamination rate after changing of disinfectants: retrospective observational study.

Blood cultures are indispensable for detecting life-threatening bacteremia. Little is known about associations between contamination rates and topical disinfectants for blood collection in adults. We sought to determine whether a change in topical disinfectants was associated with the rates of contaminated blood cultures in the emergency department of a single institution.

Focused Assessment with Sonography for Trauma (FAST) training for first-year resident physicians at a university hospital in Japan: A longitudinal, observational study.

Background: Ultrasound training is an essential part of residency programs during emergency medicine rotations for first-year trainees (postgraduate year 1). The Focused Assessment with Sonography for Trauma examination used to assess for internal bleeding in trauma patients is one of the essential skills postgraduate year 1 residents must acquire during the emergency medicine rotation.

Method: A prospective, longitudinal, observational study of postgraduate year 1 residents during a 2-month long emergency medicine rotation conducted from 1 April 2019 to 31 May 2021.

Sites of blood collection and topical antiseptics associated with contaminated cultures: prospective observational study.

We aimed to determine whether puncture sites for blood sampling and topical disinfectants are associated with rates of contaminated blood cultures in the emergency department (ED) of a single institution. This single-center, prospective observational study of 249 consecutive patients aged ≥ 20 years proceeded in the ED of a university hospital in Japan during 6 months. Pairs of blood samples were collected for aerobic and anaerobic culture from all patients in the ED.

Gastric submucosal abscess caused by Edwardsiella tarda infection: a case report.

Background: Edwardsiella tarda is a motile, facultatively anaerobic gram-negative bacillus that is isolated from a wide spectrum of animals in aquatic environments but rarely causes infection in humans. Here, we describe the case of a gastric submucosal abscess caused by E. tarda infection.

Tachyarrhythmia improved by management of low back pain in a patient with delayed diagnosis of infective spondylodiscitis: A case report.

A 77-year-old man presented to the emergency room with a 1-month history of persistent low back pain with the absence of vital sign abnormalities. On several previous orthopedic surgery clinic visits, pathological back pain had not been considered and pain killers had been prescribed because he had low back pain due to lumbar spinal canal stenosis. He was admitted to the intensive care unit for infectious spondylodiscitis and infective endocarditis with disseminated abscess caused by methicillin-resistant .

Effect of Shakuyaku-kanzo-to in patients with muscle cramps: A systematic literature review.

Background: Previous clinical studies have reported that Shakuyaku-kanzo-to (SKT) has a therapeutic effect on muscle cramps, but few studies have clarified how SKT acts to treat muscle cramps. The aim of this study was to perform an updated systematic review of clinical trials for SKT in patients with muscle cramps.

Methods: The literature was systematically reviewed to assess the effects of SKT in patients with muscle cramps.

Massive abscess with prolonged respiratory failure due to newly diagnosed myotonic dystrophy: A case report.

Rationale: Myotonic dystrophy is a progressive multisystem genetic heterogeneous disorder. General anesthesia with opioids increases the risk of prolonged postanesthetic respiratory recovery in myotonic dystrophy patients.

Patient Concerns: A 20-year-old previously healthy woman was transferred to our emergency department for further workup of respiratory failure, and massive ascites with abscess caused by endometriosis.

Killian-Jamieson diverticulum mimicking a thyroid nodule: A case report.

Killian-Jamieson diverticulum (KJD) is a rare disease of the cervical esophagus, often misidentified as thyroid nodules on ultrasonography. We performed carotid artery ultrasonography for an asymptomatic 68-year-old man. The ultrasound showed an oval nodule with heterogeneous echogenicity surrounded by a multilayered rim in the posterior left thyroid gland.

The role of ultrasound imaging in adult patients with testicular torsion: a systematic review and meta-analysis.

Purpose: Our aim was to determine the accuracy of ultrasound (US) examination-based testicular torsion diagnosis in adult patients with acute scrotal pain.

Methods: A comprehensive electronic search was performed using internet retrieval systems up to 5 August 2018 in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) guidelines. The quality of eligible studies was assessed using Quality Assessment for Studies of Diagnostic Accuracy (QUADAS-2).

Massive hemothorax due to two bleeding sources with minor injury mechanism: a case report.

Background: Massive hemothorax resulting from a minor injury mechanism is considered to be rare particularly when the diaphragm is injured. We report a case of massive hemothorax with bleeding from the intercostal artery and diaphragmatic damage caused by minor blunt trauma.

Case Presentation: An 83-year-old Japanese man was transported to our hospital 3 hours after falling out of bed.

An atypical case of atypical pneumonia.

Atypical pneumonia has been thought to account for 7%-20% of community-acquired pneumonia (CAP). The treatment for the pathogens that cause atypical pneumonia is different from that of other bacterial pneumonia. Therefore, identification of the causative pathogen in a primary care situation is crucial for adequate treatment of CAP.

Atypical spinal cord infarction: A case report.

Introduction: The abrupt onset of sensorimotor deficits is a neurologic emergency that requires immediate management. Acute spontaneous spinal cord infarction (SCI) is rare, but can cause the sudden onset of quadriplegia or quadriparesis. Magnetic resonance imaging (MRI) is an essential imaging modality to diagnose SCI.