Publications by authors named "Ron Dueck"
Article Synopsis
- Patients with end-expiratory flow limitation (eEFL) show a notable increase in capnography slope, indicating a phenomenon called phase 5, which had not been previously observed in this context.
- The study involved 6 healthy participants exhaling from total lung capacity to residual volume while measuring the volumes associated with flow limitation and phase 5 for carbon dioxide (CO) and nitrogen (N).
- The findings indicate that phase 5 appears shortly after eEFL and can help monitor anesthetized patients, with potential treatments including lung volume-increasing maneuvers like positive end-expiratory pressure.
Blood pressure is overwhelmingly the most commonly measured parameter for the assessment of haemodynamic stability. In clinical routine in the operating theatre and in the intensive care unit, blood pressure measurements are usually obtained intermittently and non-invasively using oscillometry (upper-arm cuff method) or continuously and invasively with an arterial catheter. However, both the oscillometric method and arterial catheter-derived blood pressure measurements have potential limitations.
View Article and Find Full Text PDFNoninvasive continuous beat-to-beat radial artery pressure via TL-200 applanation tonometry.
J Clin Monit Comput
April 2012
The Tensys TL-200(®) noninvasive beat-to-beat blood pressure (BP) monitor displays continuous radial artery waveform as well as systolic, mean and diastolic BP from a pressure sensor directly over the radial artery at the wrist. It locates the site of maximal radial pulse signal, determines mean BP from maximal pulse waveform amplitude at optimal artery compression and then derives systolic and diastolic BP. We performed a cross-sectional study of TL-200 BP comparisons with contralateral invasive radial artery (A-Line) BP values in 19 subjects during an average 2.
View Article and Find Full Text PDFArticle Synopsis
- The review discusses how to recruit lungs effectively using pressure/volume curves and methods like CT and electrical impedance tomography.
- Recent findings show that certain ventilation strategies can harm previously collapsed lung areas and that a determined approach to positive end-expiratory pressure (PEEP) is necessary to avoid further injury.
- Balancing PEEP levels to prevent lung recruitment/derecruitment cycling while maximizing oxygenation might require advanced imaging techniques to monitor and optimize ventilation.