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Originally, the efficacy of acute ischemic stroke treatment with thrombolysis or thrombectomy was only proven in narrow time windows of, respectively, 4.5 and 6 h after onset. Introducing imaging-based selection beyond non-contrast enhanced computed tomography has expanded the treatment window, focusing on presumed tissue status rather than solely on time after stroke onset. Different mismatch concepts have been adopted in clinical practice to select patients in the extended and unknown time window based on findings from randomized controlled trials. Since various concepts exist that can identify patients likely to benefit from reperfusion strategies, clinicians may wonder which imaging modality may be preferred in the emergency setting. In this review, we will discuss the different mismatch concepts and their practical implementation for patient selection for thrombolysis or thrombectomy, beyond the conventional time window.
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http://dx.doi.org/10.1007/s00415-021-10872-4 | DOI Listing |
Am J Respir Crit Care Med
September 2025
Emory University, Atlanta, Georgia, United States;
Background: Wildfires significantly affect air quality in the Western United States. Although prior research has linked wildfire smoke PM to respiratory health outcomes, these studies typically have limited geographic and temporal coverage, lacking evidence from multiple states over extended periods.
Methods: We obtained data on over 6 million emergency department (ED) visits for respiratory diseases, including asthma, chronic obstructive pulmonary disease (COPD), upper respiratory infections (URI), and bronchitis, from five states in the Western US during 2007-2018.
Am J Physiol Regul Integr Comp Physiol
September 2025
Human and Environmental Physiology Research Unit, School of Human Kinetics, University of Ottawa, Ottawa, ON, Canada.
to explore sex and heating rate effects on frequency-domain indicators of the mechanisms modulating cutaneous vasodilation during local heating. In thirty young adults (21±3 years, 15 females), wavelet analysis of skin blood flux was assessed from laser-Doppler flux signals at the chest, abdomen, arm, forearm, thigh, and calf during rapid (33-42°C; 1°C·20 s) and gradual (33-42°C; 1°C·5 min) local skin heating. A wavelet transform using a Morlet mother wavelet was computed over the entire signal for each heating protocol (minimum 90 minutes) and 5-min time windows were subsequently isolated to determine responses during baseline and the 42°C heating plateau.
View Article and Find Full Text PDFPLoS One
September 2025
Department of Anatomy and Physiology, The University of Melbourne, Parkville, Victoria, Australia.
Food intake is a key regulator of the digestive system function; however, little is known about organ- and sex-specific differences in food-driven regulation. We placed male and female C57Bl/6 mice on time-restricted feeding (TRF), limiting access to food to an 8-hour window. Food was added either at dark (ZT12) or light (ZT0) onset for 14 days.
View Article and Find Full Text PDFThe interpretation of urine drug test results is complicated by the potential for poppy seed ingestion to yield opiate concentrations above standard cutoffs. U.S.
View Article and Find Full Text PDFProc Natl Acad Sci U S A
September 2025
Department of Zoology, Biodiversity Research Centre, University of British Columbia, Vancouver, BC V6T 1Z4.
The size and composition of local species pools are, in part, determined by past dispersal events. Predicting how communities respond to future disturbances, such as fluctuating environmental conditions, requires knowledge of such histories. We assessed the influence of a historical dispersal event on community assembly by simulating various scales of dispersal for 240 serpentine annual plant communities that experienced a large shift from drought to high rainfall conditions over three years.
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