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Time to Renitrogenation After Maximal Denitrogenation in Healthy Volunteers in the Supine and Sitting Positions.
West J Emerg Med
November 2022
University of Arizona College of Medicine, Department of Emergency Medicine, Tucson, Arizona.
Introduction: Prior to intubation, preoxygenation is performed to denitrogenate the lungs and create an oxygen reservoir. After oxygen is removed, it is unclear whether renitrogenation after preoxygenation occurs faster in the supine vs the sitting position.
Methods: We enrolled 80 healthy volunteers who underwent two preoxygenation and loss of preoxygenation procedures (one while supine and one while sitting) via bag-valve-mask ventilation with spontaneous breathing.
Greening preoxygenation: the snorkel technique.
Minerva Anestesiol
November 2021
Department of Anesthesiology, Saint-Roch Polyclinic, Montpellier, France -
Objective: Breast cancer radiotherapy is increasingly delivered supine with multiple, short breath-holds. There may be heart and lung sparing advantages for locoregional breast cancer of both prone treatment and in a single breath-hold. We test here whether single prolonged breath-holds are possible in the prone, front crawl position.
View Article and Find Full Text PDFThe feasibility, safety and optimization of multiple prolonged breath-holds for radiotherapy.
Radiother Oncol
December 2019
National Institute for Health Research (NIHR)/Wellcome Trust Birmingham Clinical Research Facility, United Kingdom; Department of Anaesthesia and Intensive Care Medicine, University of Birmingham and University Hospitals Birmingham NHS Foundation Trust, United Kingdom.
Background & Purpose: Multiple, short breath-holds are now used in single radiotherapy treatment sessions. Here we investigated the feasibility and safety of multiple prolonged breath-holds in a single session. We measured how long is a second breath-hold if we prematurely terminate a single, prolonged breath-hold of >5 min either by using a single breath of oxygen (O), or by reintroducing preoxygenation and hypocapnia.
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