Quantitative and functional parameters of regional intestinal blood circulation were intraoperatively investigated with the use of laser Doppler flowmetry. The first group consisted of patients with necrotized parts of the intestine, while the second (control) group consisted of flowmetry data from intact intestine. Such indexes, as basal circulation, variation coefficient, blood oxygen perfusion saturation index, maximal perfusion amplitude of endothelial, neurogenic and myogenic oscillations in the intestinal volume, were showed to be valuable for the intestinal viability assessment. Thus, the method of the intraoperative laser Doppler flowmetry can be useful for determining the volume of intestinal resection.
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Langmuir
January 2025
Cain Department of Chemical Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, United States.
The self-assembly of nanoparticle colloids into large-area monolayers with long-range order is a grand challenge in nanotechnology. Using acoustic energy, i.e.
View Article and Find Full Text PDFJ Biophotonics
January 2025
Research and Development Center of Biomedical Photonics, Orel State University, Orel, Russia.
The work is devoted to the study of the physiological variability of the microcirculatory-tissue system (MTS) parameters under normal conditions and during functional tests. The results were obtained in vivo using multimodal wearable analyzers implementing methods of laser Doppler flowmetry and fluorescence spectroscopy. Comprehensive data analysis and calculation of the coefficients of variation of the MTS parameters of the human body for various topographic and anatomical areas of the skin were carried out.
View Article and Find Full Text PDFMid-infrared dual-comb spectroscopy offers significant advantages by combining the high sensitivity of mid-infrared spectroscopy with the high spectral resolution and rapid acquisition of the dual-comb method. However, its effective resolution, constrained by the inherent comb line spacing, hinders its ability to resolve narrow absorption features, common in critical applications such as sub-Doppler spectroscopy, low-pressure gas analysis, and construction of the atmospheric profile. To address this challenge, we present a synchronous offset frequency tuning method for the mid-infrared dual-comb system to improve effective resolution far beyond comb line spacing.
View Article and Find Full Text PDFWe present a dual isotope magneto-optical trap (MOT), simultaneous sub-Doppler laser cooling, and magnetic trapping of a spin-polarized K-K Bose-Fermi mixture realized in a single-chamber setup with an unenriched potassium dispenser as the source of atoms. We are able to magnetically confine more than 2.2 × 10 fermions ( = 9/2 , = 9/2) and 1.
View Article and Find Full Text PDFJ Cardiothorac Surg
January 2025
Department of Anesthesiology, Zhongda hospital, Southeast University, No. 87 Dingjiaqiao, Nanjing City, 210009, Jiangsu Province, China.
Monitoring perioperative tissue perfusion is crucial in clinical anesthesia to protect organs and ensure patient safety. Indicators like hemodynamic parameters, tissue metabolism, and microcirculation markers are used for assessment. Studies show intraoperative hypotension negatively impacts outcomes, though blood pressure alone may not reflect tissue perfusion accurately.
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