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Successful awake intubation using Airtraq in a low-resource setting for a patient with severe post-burn contractures.
BMC Anesthesiol
January 2025
Department of Anesthesiology, Pharmacology, Intensive Care and Emergency Medicine, University Hospitals of Geneva, Geneva, 1205, Switzerland.
Background: In resource-limited settings, advanced airway management tools like fiberoptic bronchoscopes are often unavailable, creating challenges for managing difficult airways. We present the case of a 25-year-old male with post-burn contractures of the face, neck, and thorax in Nigeria, who had been repeatedly denied surgery due to the high risk of airway management complications. This case highlights how an awake intubation was safely performed using an Airtraq laryngoscope, the only device available, as fiberoptic intubation was not an option.
View Article and Find Full Text PDFColon Tumor Discrimination Combining Independent Endoscopic Probe-Based Raman Spectroscopy and Optical Coherence Tomography Modalities with Bayes Rule.
Int J Mol Sci
December 2024
Leibniz-Institute of Photonic Technology (Leibniz-IPHT), Albert-Einstein-Str. 9, 07745 Jena, Germany.
Colorectal cancer is one of the most prevalent forms of cancer globally. The most common routine diagnostic methods are the examination of the interior of the colon during colonoscopy or sigmoidoscopy, which frequently includes the removal of a biopsy sample. Optical methods, such as Raman spectroscopy (RS) and optical coherence tomography (OCT), can help to improve diagnostics and reduce the number of unnecessary biopsies.
View Article and Find Full Text PDFAC Magnetometry Using Nano-ferrofluid Cladded Multimode Interferometric Fiber Optic Sensors for Power Grid Monitoring Applications.
ACS Appl Nano Mater
December 2024
Mechanical Engineering & Materials Science, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States.
The AC magnetic field response of the superparamagnetic nano-ferrofluid is an interplay between the Neel and Brownian relaxation processes and is generally quantified via the susceptibility measurements at high frequencies. The high frequency limit is dictated by these relaxation times which need to be shorter than the time scale of the time varying magnetic field for the nano-ferrofluid to be considered in an equilibrium state at each time instant. Even though the high frequency response of ferrofluid has been extensively investigated for frequencies up to GHz range by non-optical methods, harnessing dynamic response by optical means for AC magnetic field sensing in fiber-optic-based sensors-field remains unexplored.
View Article and Find Full Text PDFOpen-closed single-tube on-beam tuning-fork-enhanced fiber-optic photoacoustic spectroscopy.
Photoacoustics
October 2024
Wuhan National Laboratory for Optoelectronics (WNLO) and National Engineering Research Center of Next Generation Internet Access-system, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China.
A proof-of-concept on-beam tuning-fork-enhanced photoacoustic sensor based on an open-closed single-tube acoustic-microresonator (AmR) was proposed and investigated for the first time, to the best of our knowledge. Due to the high acoustic amplification effect, the open-closed AmR improved the detection sensitivity by 54 times with respect to the bare tuning fork (TF). Compared to traditional dual-tube/single-tube on-beam spectrophone configuration, the developed approach significantly facilitates the laser beam alignment and reduces the sensor size and gas consumption.
View Article and Find Full Text PDFReal time continuous monitoring of injection pressure at the needle tip is better than ultrasound in early detecting intraneural injection.
Reg Anesth Pain Med
January 2025
Anesthesia, Ospedale Regionale di Bellinzona e Valli Bellinzona, Bellinzona, Switzerland.
Article Synopsis
- Inadvertent intraneural injections during peripheral nerve blocks are common, and this study compares two detection methods: injection pressure monitoring and ultrasound imaging.
- The research involved anesthesiologists conducting intraneural injections on fresh cadaver arms, measuring both pressure and sonographic images to evaluate outcomes.
- Results showed that pressure monitoring detected intraneural injection much earlier than ultrasound (after just 0.2 mL vs. 1.2 mL for swelling), confirming that pressure monitoring is a more sensitive technique.
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