Results 41 to 50 of about 1,470 (139)

What Proportion of Emergency Department Headache Patients With Normal Neurology Have a Serious Secondary Headache Cause? A HEAD Study Report

open access: yesEmergency Medicine Australasia, Volume 37, Issue 5, October 2025.
ABSTRACT Objectives To estimate the proportion of Emergency Department (ED) headache patients without neurological features who are diagnosed with a serious secondary headache cause. Methods Unplanned secondary analysis of HEAD Study/HEAD Colombia data.
Anne Maree Kelly   +93 more
wiley   +1 more source

Development of a Refined Model for a Rapid Compression and Expansion Machine with Pre-Chamber Applied to Study the Effects of Pre-Chamber Geometry and Hydrogen Enrichment on Combustion and Extinction of Methane/Air Flames

open access: yesEnergies
In this paper, experimental and numerical analyses are performed with a Rapid Compression and Expansion Machine (RCEM) equipped with a passive pre-chamber (PC) and fueled with premixed stoichiometric air/methane mixture to replicate engine-like ...
Fabio Bozza   +5 more
doaj   +1 more source

Review: Hormone Pregnancy Tests Were Teratogenic by the Same Failed Abortion and Hypoxia‐Related Mechanism as Misoprostol

open access: yesBirth Defects Research, Volume 117, Issue 3, March 2025.
ABSTRACT Introduction Hormone pregnancy tests (HPTs), containing synthetic progesterone and oestrogen, were used to diagnose pregnancy in the 1950s to early 1980s. An existing pregnancy was purported to be unaffected while expulsion of the uterine lining (withdrawal bleed) was supposed to occur if the woman was not pregnant.
Bengt R. Danielsson, Helen E. Ritchie
wiley   +1 more source

Extracting Site Effects From P‐wave spectra: Application of Cluster‐Event Method 2 (CEM2) in the Tohoku Region, Japan

open access: yesJournal of Geophysical Research: Solid Earth, Volume 130, Issue 1, January 2025.
Abstract Theories related to the Earth's attenuation effect and earthquake source properties predict a similar spectral falloff of body waves, creating severe trade‐off problems when determining these two processes from waveform spectra. Previous efforts attempted to suppress this trade‐off by either applying an empirical Green's function or conducting
Pei‐Ru Jian, Ban‐Yuan Kuo
wiley   +1 more source

Prenatal findings in 11 cases with craniofacial microsomia using the Alberta Congenital Anomalies Surveillance System, 1997–2019

open access: yesAmerican Journal of Medical Genetics Part A, Volume 194, Issue 8, August 2024.
Abstract Craniofacial microsomia (CFM) primarily includes specific head and neck anomalies that co‐occur more frequently than expected. The anomalies are usually asymmetric and affect craniofacial features; however, there are frequently additional anomalies of variable severity. Published prenatal findings for CFM are limited. This study contributes 11
Mary Ann Thomas   +3 more
wiley   +1 more source

RCEM Studies: Conversion of CH4 into unsaturated hydrocarbons and hydrogen

open access: yes, 2022
We study the conversion of small alkanes (CH$_\text{4}$, C$_\text{2}$H$_\text{6}$, C$_\text{3}$H$_\text{8}$) into unsaturated hydrocarbons, notably C$_\text{2}$H$_\text{2}$, C$_\text{2}$H$_\text{4}$ and hydrogen, in a Rapid Compression/Expansion Machine (
Schießl, Robert   +2 more
core  

Airway management in patients with suspected or confirmed cervical spine injury

open access: yesAnaesthesia, Volume 79, Issue 8, Page 856-868, August 2024.
Summary Background There are concerns that airway management in patients with suspected or confirmed cervical spine injury may exacerbate an existing neurological deficit, cause a new spinal cord injury or be hazardous due to precautions to avoid neurological injury.
Matthew D. Wiles   +13 more
wiley   +1 more source

POMDME as an Alternative Pilot Fuel for Dual-Fuel Engines: Optical Study in a RCEM and Application in an Automotive Size Dual-Fuel Diesel Engine

open access: yes, 2018
Dual-fuel natural gas engines are seen as an attractive solution for simultaneous reduction of pollutant and CO2 emissions while maintaining high engine thermal efficiency.
Richard Hutter   +11 more
core   +1 more source

Doctors', Patients' and Physician Associates' Perceptions of the Physician Associate Role in the Emergency Department

open access: yesHealth Expectations, Volume 27, Issue 4, August 2024.
Abstract Introduction The Emergency Department (ED) has seen increased patient attendance and difficulty meeting demands. New healthcare professions such as Physician Associates (PAs) are being utilised to complement the existing medical workforce. Despite the growth of their professions in the United Kingdom, little evidence is available about the ...
Nicole M. A. King   +3 more
wiley   +1 more source

Point‐of‐care ultrasound is a useful adjunct tool to a clinician's assessment in the evaluation of severe hyponatraemia

open access: yesClinical Endocrinology, Volume 100, Issue 6, Page 595-601, June 2024.
Abstract Introduction Hyponatraemia is the most common electrolyte disorder in inpatients resulting mainly from an imbalance in water homeostasis. Intravascular fluid status assessment is pivotal but is often challenging given multimorbidity, polypharmacy and diuretics use. We evaluated the utility of point‐of‐care ultrasound (POCUS) as an adjunct tool
Latif R. Rahman   +8 more
wiley   +1 more source

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