1. Pulse oximeter tracings from a 60-year-old woman with exacerbation of chronic obstructive pulmonary disease who was admitted to the intensive care unit in ventilatory failure. A. The patient's pulse oximetry tracing at the time of admission reveals respiratory variability in the pulse oximeter plethysmography tracing. Measured pulsus paradoxus at this time was 16 mm Hg. B. The patient's pulse oximetry tracing after 12 hours of aggressive therapy. Pulsus paradoxus at this time was 8 mm Hg. Note the absence of respiratory waveform variation (RWV) in the baseline of the oximeter tracing after clinical improvement in airflow and resolution of elevated pulsus paradoxus. (Reproduced with permission from Longnecker D, Brown D, Newman M, Zapol W. Anesthesiology. 2nd ed. New York, NY: McGraw-Hill; 2012; reproduced from Hartert TV, Wheeler AP, Sheller JR. Use of pulse oximetry to recognize severity of airflow obstruction in obstructive airway disease: correlation with pulsus paradoxus. Chest. 1999; Feb;115(2): )
Source: Pulse Oximetry, Capnography, and Transcutaneous Monitoring, Essentials of Mechanical Ventilation, 3e
Citation: Hess DR, Kacmarek RM. Essentials of Mechanical Ventilation, 3e; 2014 Available at: Accessed: January 03, 2018
Copyright © 2018 McGraw-Hill Education. All rights reserved