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Background: Persistent bacteremia, despite the susceptibility of the causative organism to appropriate antimicrobial therapy, presents a major clinical challenge. In such cases, early identifica-tion and control of the infectious source are essential to prevent complications and reduce mortality.
Case Presentation: We report the case of a 59-year-old woman with persistent Methicillin-resistant Staphylococcus Aureus (MRSA) bacteremia following spinal surgery. Despite multiple days of in-travenous antibiotic therapy, her blood cultures remained positive for MRSA. A tagged white blood cell (Technetium-99) scan revealed an abscess in the right sacroiliac joint. Surgical drainage of the abscess led to clinical improvement and resolution of bacteremia. Interestingly, cultures of the ab-scess fluid grew Enterococcus faecalis rather than MRSA.
Discussion: This case underscores the importance of early source control in the management of per-sistent bacteremia. Even when the pathogen isolated from the presumed source differs from that in the bloodstream, drainage can play a critical role in resolving systemic infection.
Conclusion: Early source control should be pursued in persistent bacteremia, regardless of initial culture results. Imaging studies may assist in locating occult sources, and successful drainage may contribute to clinical improvement even when the primary bloodstream pathogen is not isolated from the source.
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http://dx.doi.org/10.2174/0118715265374832250604114516 | DOI Listing |
Front Neurosci
August 2025
Acoustics Research Institute, Austrian Academy of Sciences, Vienna, Austria.
Introduction: Spatial hearing enables both voluntary localization of sound sources and automatic monitoring of the surroundings. The auditory looming bias (ALB), characterized by the prioritized processing of approaching (looming) sounds over receding ones, is thought to serve as an early hazard detection mechanism. The bias could theoretically reflect an adaptation to the low-level acoustic properties of approaching sounds, or alternatively necessitate the sound to be localizable in space.
View Article and Find Full Text PDFFront Public Health
September 2025
Department of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, MA, United States.
The frequency and severity of heat waves are expected to worsen with climate change. Exposure to extreme heat, or prolonged unusually high temperatures, are associated with increased morbidity and mortality. The fetus, infant, and young child are more sensitive to higher temperatures than older children and most adults given that they are rapidly developing.
View Article and Find Full Text PDFAnn Biomed Eng
September 2025
Department of Mechanical Engineering, Koc University, Rumeli Feneri Campus, Sarıyer, 34450, Istanbul, Turkey.
Purpose: The design and development of ventricular assist devices have heavily relied on computational tools, particularly computational fluid dynamics (CFD), since the early 2000s. However, traditional CFD-based optimization requires costly trial-and-error approaches involving multiple design cycles. This study aims to propose a more efficient VAD design and optimization framework that overcomes these limitations.
View Article and Find Full Text PDFProc Biol Sci
September 2025
School of Life Sciences, Jilin University, Changchun, Jilin 130012, People's Republic of China.
Between the third and sixth centuries AD (Anno Domini), the Xianbei emerged as a dominant nomadic power in the Eastern Eurasian Steppe, distinguished by their exceptional equestrian culture and the pivotal role of cavalry in warfare. Despite their historical significance, detailed knowledge of their cavalry's weaponry and equipment-particularly armour-remains fragmentary. As a critical element of military technology, armour offers valuable insights into ancient combat strategies and cultural practices.
View Article and Find Full Text PDFUltrasonics
September 2025
Faculty of Land Resource Engineering, Kunming University of Science and Technology, Yunnan 650093, China; Key Laboratory of Geohazard Forecast and Geoecological Restoration in Plateau Mountainous Area, Ministry of Natural Resources of the People's Republic of China, Yunnan Province, Kunming, Yunnan
Identifying and predicting the catastrophic failure of brittle rock remains a challenging task, yet it is crucial for developing early warning systems and preventing dynamic rock hazards. In this study, we employed the propagative parameters of ultrasonic waves and information from acoustic emission (AE) events to characterize the brittle failure of a flawed sandstone sample under uniaxial compression. A sliding event window method was developed to obtain the temporal b-value, effectively revealing microcrack growth based on the frequency-magnitude distribution of AE events.
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