The risk of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) transmission to health care workers during myringotomy and tympanostomy tube (MT) insertion is unknown. To determine the need for enhanced precautions to prevent potential spread via aerosolized particles, we used an optical particle sizer to measure aerosol generation intraoperatively during a case series of MT insertion. We also discuss our institutional experience with safe pandemic-era perioperative practices. There was no measured increase in aerosol particle number during the procedure at a distance of 30 cm from the external auditory canal. These initial data are reassuring regarding the risk of SARS-CoV-2 transmission to the operating room team due to aerosol generation, but further study is necessary before making definitive recommendations.
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http://dx.doi.org/10.1177/0194599821989626 | DOI Listing |
Proc Natl Acad Sci U S A
January 2025
Department of Microbiology and Immunology, Emory University School of Medicine, Atlanta, GA 30322.
Viral infections are characterized by dispersal from an initial site to secondary locations within the host. How the resultant spatial heterogeneity shapes within-host genetic diversity and viral evolutionary pathways is poorly understood. Here, we show that virus dispersal within and between the nasal cavity and trachea maintains diversity and is therefore conducive to adaptive evolution, whereas dispersal to the lungs gives rise to population heterogeneity.
View Article and Find Full Text PDFMol Pharm
January 2025
Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology (BHU), Varanasi 221005, Uttar Pradesh, India.
Tyrosine kinase inhibitors have been employed for the treatment of lung cancer, owing to their role in regulating irregulated pathways or mutated genes. Bosutinib, a nonreceptor tyrosine kinase, has been recently investigated for lung cancer treatment. Bosutinib can also be used with paclitaxel as a combinatorial approach to receive a synergistic effect for the effective management of lung cancer.
View Article and Find Full Text PDFMed Sci Monit
January 2025
Department of Anesthesiology, The General Hospital of Western Theater Command, Chengdu, Sichuan, China.
BACKGROUND Butorphanol, an opioid receptor agonist and antagonist, is widely used for post-cesarean section analgesia in the form of intravenous or intramuscular injection, but nasal sprays are less used. This study aimed to evaluate the analgesic effect of butorphanol nasal spray on uterine contraction pain after cesarean section and explore its effect on postpartum prolactin secretion. MATERIAL AND METHODS We randomly divided 120 patients scheduled for cesarean section into 3 groups (40 per group): intranasal saline (control), butorphanol intranasal (BI), and butorphanol pumped intravenously (BV).
View Article and Find Full Text PDFEnviron Sci Technol Lett
January 2025
PSI Center for Energy and Environmental Sciences, Paul Scherrer Institute, 5232 Villigen, Switzerland.
Oxidative potential (OP) is increasingly recognized as a more health-relevant metric than particulate matter (PM) mass concentration because of its response to varying chemical compositions. Given the limited research on the OP of complex combustion aerosols, the effects of aging processes on their OP remain underexplored. We used online instruments to track the evolution of OP [via dithiothreitol (DTT) assays] during the aging of wood burning and coal combustion emissions by hydroxyl-radical-driven photooxidation and dark ozonolysis.
View Article and Find Full Text PDFJ Aerosol Sci
January 2025
Department of Mechanical and Nuclear Engineering, Virginia Commonwealth University, Richmond, VA.
The use of air-jet dry powder inhalers (DPIs) offers a number of advantages for the administration of pharmaceutical aerosols, including the ability to achieve highly efficient and potentially targeted aerosol delivery to the lungs of children using the oral or trans-nasal routes of administration. To better plan targeted lung delivery of pharmaceutical aerosols with these inhalers, more information is needed on the extrathoracic (ET) depositional loss in pediatric subjects when using relatively small (e.g.
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